Merge pull request #416 from arabcoders/dev

Mostly CI improvements to include tests and linting

.github/workflows/build-pr.yml

@@ -1,4 +1,4 @@
-name: Test Build PR
+name: Test PR
 
 permissions:
   contents: read
@@ -14,14 +14,37 @@ on:
 env:
   PNPM_VERSION: 10
   NODE_VERSION: 20
+  PYTHON_VERSION: "3.11"
 
 jobs:
-  build-pr:
+  test:
+    name: Run Tests & Build Validation
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      # Python setup and testing
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+        with:
+          version: "latest"
+
+      - name: Install Python dependencies
+        run: uv sync
+
+      - name: Run Python linting
+        run: uv run ruff check app/
+
+      - name: Run Python tests
+        run: uv run pytest app/tests/ -v --tb=short
+
+      # Frontend setup and testing
       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:
@@ -34,16 +57,39 @@ jobs:
           cache: pnpm
           cache-dependency-path: "ui/pnpm-lock.yaml"
 
-      - name: Install frontend dependencies & Build
+      - name: Install frontend dependencies
         working-directory: ui
-        run: |
+        env:
-          pnpm install --production --prefer-offline --frozen-lockfile
+          NODE_ENV: development
-          pnpm run generate
+        run: pnpm install --frozen-lockfile
 
+      - name: Prepare frontend (nuxt prepare)
+        working-directory: ui
+        env:
+          NODE_ENV: development
+        run: pnpm nuxt prepare
+
+      - name: Run frontend linting
+        working-directory: ui
+        run: pnpm run lint
+
+      - name: Run frontend type checking
+        working-directory: ui
+        run: pnpm run typecheck
+
+      - name: Run frontend tests
+        working-directory: ui
+        run: pnpm run test:ci
+
+      - name: Build frontend
+        working-directory: ui
+        run: pnpm run generate
+
+      # Quick Docker build validation (no push, cache only)
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Build commit to check (amd64 only)
+      - name: Validate Docker build
         uses: docker/build-push-action@v5
         with:
           context: .
@@ -52,4 +98,3 @@ jobs:
           cache-from: type=gha,scope=${{ github.workflow }}
           cache-to: type=gha,mode=max,scope=${{ github.workflow }}
           provenance: false
-

.github/workflows/main.yml

@@ -26,29 +26,41 @@ env:
   GHCR_SLUG: ghcr.io/arabcoders/ytptube
   PNPM_VERSION: 10
   NODE_VERSION: 20
+  PYTHON_VERSION: "3.11"
 
 jobs:
-  docker-build-arch:
+  test:
-    name: Build Container (${{ matrix.arch }})
+    name: Run Tests & Prepare Frontend
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        include:
-          - os: ubuntu-latest
-            arch: amd64
-          - os: ubuntu-latest
-            arch: arm64
     permissions:
-      packages: write
+      contents: read
-      contents: write
+    runs-on: ubuntu-latest
-    env:
-      ARCH: ${{ matrix.arch }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
+      # Python setup and testing
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+        with:
+          version: "latest"
+
+      - name: Install Python dependencies
+        run: uv sync
+
+      - name: Run Python linting
+        run: uv run ruff check app/
+
+      - name: Run Python tests
+        run: uv run pytest app/tests/ -v --tb=short
+
+      # Frontend setup and testing
       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:
@@ -61,12 +73,41 @@ jobs:
           cache: pnpm
           cache-dependency-path: "ui/pnpm-lock.yaml"
 
-      - name: Install frontend dependencies & Build
+      - name: Install frontend dependencies
         working-directory: ui
-        run: |
+        env:
-          pnpm install --production --prefer-offline --frozen-lockfile
+          NODE_ENV: development
-          pnpm run generate
+        run: pnpm install --frozen-lockfile
 
+      - name: Prepare frontend (nuxt prepare)
+        working-directory: ui
+        env:
+          NODE_ENV: development
+        run: pnpm nuxt prepare
+
+      - name: Run frontend linting
+        working-directory: ui
+        run: pnpm run lint
+
+      - name: Run frontend type checking
+        working-directory: ui
+        run: pnpm run typecheck
+
+      - name: Run frontend tests
+        working-directory: ui
+        run: pnpm run test:ci
+
+      - name: Remove dev dependencies
+        working-directory: ui
+        env:
+          NODE_ENV: production
+        run: pnpm install --frozen-lockfile --prod
+
+      - name: Build frontend
+        working-directory: ui
+        run: pnpm run generate
+
+      # Generate changelog and version files
       - name: Install GitPython
         run: pip install gitpython
 
@@ -93,6 +134,42 @@ jobs:
             -e "s/^APP_BRANCH = \".*\"/APP_BRANCH = \"${BRANCH}\"/" \
             app/library/version.py
 
+      # Upload built frontend as artifact for docker builds
+      - name: Upload frontend build
+        uses: actions/upload-artifact@v4
+        with:
+          name: frontend-build
+          path: ui/exported/
+          retention-days: 1
+
+  docker-build-arch:
+    name: Build Container (${{ matrix.arch }})
+    runs-on: ${{ matrix.os }}
+    needs: [test]
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-latest
+            arch: amd64
+          - os: ubuntu-latest
+            arch: arm64
+    permissions:
+      packages: write
+      contents: write
+    env:
+      ARCH: ${{ matrix.arch }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Download frontend build
+        uses: actions/download-artifact@v4
+        with:
+          name: frontend-build
+          path: ui/exported/
+
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v5

.gitignore

@@ -37,3 +37,5 @@ __pycache__
 dist
 build
 version.txt
+test_impl.py
+./eslint.config.js

.vscode/launch.json

@@ -87,6 +87,6 @@
         }
       ],
       "justMyCode": true
-    }
+    },
   ]
 }

.vscode/settings.json

@@ -12,12 +12,14 @@
   ],
   "cSpell.words": [
     "aconvert",
+    "addopts",
     "ahas",
     "ahash",
     "aiocron",
     "anyio",
     "Archiver",
     "arrowless",
+    "asyncio",
     "attl",
     "autonumber",
     "bgutil",
@@ -26,6 +28,7 @@
     "brainicism",
     "brotlicffi",
     "buildcache",
+    "Cfmrc",
     "choco",
     "consoletitle",
     "continuedl",
@@ -39,20 +42,27 @@
     "daterange",
     "defusedxml",
     "dlfields",
+    "dotdot",
     "dotenv",
     "dpkg",
+    "dunder",
+    "Edes",
     "edgechromium",
+    "EISGPM",
     "engineio",
     "Errno",
     "esac",
     "euuo",
     "excepthook",
     "faststart",
+    "Fetc",
     "finaldir",
     "flac",
     "forcejson",
     "forceprint",
+    "Fpasswd",
     "fribidi",
+    "Funsafe",
     "getpid",
     "gibibytes",
     "gitpython",
@@ -62,12 +72,14 @@
     "httpx",
     "imagetools",
     "kibibytes",
+    "lastgroup",
     "levelno",
     "libcurl",
     "libjavascriptcoregtk",
     "libstdc",
     "libwebkit",
     "libx",
+    "LPAREN",
     "matchtitle",
     "matroska",
     "mbed",
@@ -89,6 +101,7 @@
     "noprogress",
     "onefile",
     "pathex",
+    "pickleable",
     "platformdirs",
     "playlistend",
     "playlistrandom",
@@ -102,10 +115,12 @@
     "pycryptodomex",
     "pyinstaller",
     "pypi",
+    "pythonpath",
     "quicktime",
     "rejecttitle",
     "remux",
     "reqs",
+    "RPAREN",
     "rtime",
     "rvfc",
     "SIGUSR",
@@ -113,11 +128,14 @@
     "socketio",
     "softprops",
     "sstr",
+    "startswith",
     "SUPPRESSHELP",
     "tebibytes",
+    "testpaths",
     "tiktok",
     "timespec",
     "tmpfilename",
+    "toplevel",
     "ungroup",
     "unmark",
     "unnegated",
@@ -130,20 +148,17 @@
     "ustr",
     "vcodec",
     "vconvert",
+    "Vitest",
     "writedescription",
     "xerror",
     "youtu",
-    "youtubepot"
+    "youtubepot",
+    "русский",
+    "العربية"
   ],
   "css.styleSheets": [
     "ui/app/assets/css/*.css"
   ],
-  "spellright.language": [
-    "en"
-  ],
-  "spellright.documentTypes": [
-    "latex"
-  ],
   "search.exclude": {
     "ui/.nuxt": true,
     "ui/.output": true,
@@ -152,5 +167,7 @@
     "ui/node_modules": true,
     "ui/.out": true,
     "**/.venv": true,
-  }
+  },
+  "eslint.format.enable": true,
+  "eslint.ignoreUntitled": true
 }

app/library/DataStore.py

@@ -1,4 +1,3 @@
-import asyncio
 import copy
 import json
 import logging
@@ -151,7 +150,7 @@ class DataStore:
         if "error" == value.info.status and not no_notify:
             from app.library.Events import EventBus, Events
 
-            asyncio.create_task(EventBus.get_instance().emit(Events.ITEM_ERROR, value.info), name="emit_item_error")
+            EventBus.get_instance().emit(Events.ITEM_ERROR, value.info)
 
         self._dict.update({value.info._id: value})
         self._update_store_item(self._type, value.info)

app/library/Download.py

@@ -350,7 +350,7 @@ class Download:
         self.proc.start()
         self.info.status = "preparing"
 
-        await self._notify.emit(Events.ITEM_UPDATED, data=self.info)
+        self._notify.emit(Events.ITEM_UPDATED, data=self.info)
         asyncio.create_task(self.progress_update(), name=f"update-{self.id}")
 
         ret = await asyncio.get_running_loop().run_in_executor(None, self.proc.join)
@@ -516,7 +516,7 @@ class Download:
             self.logger.debug(f"Status Update: {self.info._id=} {status=}")
 
         if isinstance(status, str):
-            await self._notify.emit(Events.ITEM_UPDATED, data=self.info)
+            self._notify.emit(Events.ITEM_UPDATED, data=self.info)
             return
 
         self.tmpfilename: str | None = status.get("tmpfilename")
@@ -547,7 +547,7 @@ class Download:
 
         if "error" == self.info.status and "error" in status:
             self.info.error = status.get("error")
-            await self._notify.emit(
+            self._notify.emit(
                 Events.LOG_ERROR,
                 data=self.info,
                 title="Download Error",
@@ -584,7 +584,7 @@ class Download:
                 self.logger.error(f"Failed to run ffprobe. {status.get}. {e}")
 
         if not self.final_update or fl:
-            await self._notify.emit(Events.ITEM_UPDATED, data=self.info)
+            self._notify.emit(Events.ITEM_UPDATED, data=self.info)
 
     async def progress_update(self):
         """

app/library/DownloadQueue.py

@@ -3,6 +3,7 @@ import functools
 import glob
 import logging
 import time
+import traceback
 import uuid
 from datetime import UTC, datetime, timedelta
 from email.utils import formatdate
@@ -107,9 +108,11 @@ class DownloadQueue(metaclass=Singleton):
             _ (web.Application): The application to attach the download queue to.
 
         """
-        self._notify.subscribe(
+
-            Events.STARTED, lambda _, __: self.initialize(), f"{__class__.__name__}.{__class__.initialize.__name__}"
+        async def event_handler(_, __):
-        )
+            await self.initialize()
+
+        self._notify.subscribe(Events.STARTED, event_handler, f"{__class__.__name__}.{__class__.initialize.__name__}")
 
         Scheduler.get_instance().add(
             timer="* * * * *",
@@ -155,7 +158,6 @@ class DownloadQueue(metaclass=Singleton):
         """
         status: dict[str, str] = {"status": "ok"}
         started = False
-        tasks: list = []
 
         for item_id in ids:
             try:
@@ -173,14 +175,12 @@ class DownloadQueue(metaclass=Singleton):
 
             item.info.auto_start = True
             updated: Download = self.queue.put(item)
-            tasks.append(self._notify.emit(Events.ITEM_UPDATED, data=updated.info))
+            self._notify.emit(Events.ITEM_UPDATED, data=updated.info)
-            tasks.append(
+            self._notify.emit(
-                self._notify.emit(
+                Events.ITEM_RESUMED,
-                    Events.ITEM_RESUMED,
+                data=item.info,
-                    data=item.info,
+                title="Download Resumed",
-                    title="Download Resumed",
+                message=f"Download '{item.info.title}' has been resumed.",
-                    message=f"Download '{item.info.title}' has been resumed.",
-                )
             )
             status[item_id] = "started"
             started = True
@@ -189,9 +189,6 @@ class DownloadQueue(metaclass=Singleton):
         if started:
             self.event.set()
 
-        if len(tasks) > 0:
-            await asyncio.gather(*tasks)
-
         return status
 
     async def pause_items(self, ids: list[str]) -> dict[str, str]:
@@ -206,7 +203,6 @@ class DownloadQueue(metaclass=Singleton):
 
         """
         status: dict[str, str] = {"status": "ok"}
-        tasks: list = []
 
         for item_id in ids:
             try:
@@ -229,21 +225,16 @@ class DownloadQueue(metaclass=Singleton):
 
             item.info.auto_start = False
             updated: Download = self.queue.put(item)
-            tasks.append(self._notify.emit(Events.ITEM_UPDATED, data=updated.info))
+            self._notify.emit(Events.ITEM_UPDATED, data=updated.info)
-            tasks.append(
+            self._notify.emit(
-                self._notify.emit(
+                Events.ITEM_PAUSED,
-                    Events.ITEM_PAUSED,
+                data=item.info,
-                    data=item.info,
+                title="Download Paused",
-                    title="Download Paused",
+                message=f"Download '{item.info.title}' has been paused.",
-                    message=f"Download '{item.info.title}' has been paused.",
-                )
             )
             status[item_id] = "paused"
             LOG.debug(f"Item {item.info.name()} marked as paused.")
 
-        if len(tasks) > 0:
-            await asyncio.gather(*tasks)
-
         return status
 
     def pause(self, shutdown: bool = False) -> bool:
@@ -495,7 +486,7 @@ class DownloadQueue(metaclass=Singleton):
 
                 dlInfo.info.status = "not_live"
                 dlInfo.info.msg = nMessage.replace(f" '{dlInfo.info.title}'", "")
-                await self._notify.emit(
+                self._notify.emit(
                     Events.LOG_INFO,
                     data={"preset": dlInfo.info.preset, "lowPriority": True},
                     title=nTitle,
@@ -517,7 +508,7 @@ class DownloadQueue(metaclass=Singleton):
                 dlInfo.info.status = "error"
                 itemDownload = self.done.put(dlInfo)
 
-                await self._notify.emit(
+                self._notify.emit(
                     Events.LOG_WARNING,
                     data={"preset": dlInfo.info.preset, "logs": text_logs},
                     title=nTitle,
@@ -557,7 +548,7 @@ class DownloadQueue(metaclass=Singleton):
                     nStore = "history"
                     nEvent = Events.ITEM_MOVED
                     nTitle = "Premiering right now"
-                    await self._notify.emit(
+                    self._notify.emit(
                         Events.LOG_INFO, data={"preset": dlInfo.info.preset}, title=nTitle, message=nMessage
                     )
             else:
@@ -570,7 +561,7 @@ class DownloadQueue(metaclass=Singleton):
                 else:
                     LOG.debug(f"Item {itemDownload.info.name()} is not set to auto-start.")
 
-            await self._notify.emit(
+            self._notify.emit(
                 nEvent,
                 data={"to": nStore, "preset": itemDownload.info.preset, "item": itemDownload.info}
                 if Events.ITEM_MOVED == nEvent
@@ -702,7 +693,7 @@ class DownloadQueue(metaclass=Singleton):
 
                         self.done.put(dlInfo)
 
-                        await self._notify.emit(
+                        self._notify.emit(
                             Events.ITEM_MOVED,
                             data={"to": "history", "preset": dlInfo.info.preset, "item": dlInfo.info},
                             title="Download History Update",
@@ -712,7 +703,7 @@ class DownloadQueue(metaclass=Singleton):
 
                 message: str = f"The URL '{item.url}' is already downloaded and recorded in archive."
                 LOG.error(message)
-                await self._notify.emit(
+                self._notify.emit(
                     Events.LOG_INFO, data={"preset": item.preset}, title="Already Downloaded", message=message
                 )
 
@@ -866,7 +857,7 @@ class DownloadQueue(metaclass=Singleton):
                 await item.close()
                 LOG.debug(f"Deleting from queue {item_ref}")
                 self.queue.delete(id)
-                await self._notify.emit(
+                self._notify.emit(
                     Events.ITEM_CANCELLED,
                     data=item.info,
                     title="Download Cancelled",
@@ -874,7 +865,7 @@ class DownloadQueue(metaclass=Singleton):
                 )
                 item.info.status = "cancelled"
                 self.done.put(item)
-                await self._notify.emit(
+                self._notify.emit(
                     Events.ITEM_MOVED,
                     data={"to": "history", "preset": item.info.preset, "item": item.info},
                     title="Download Cancelled",
@@ -949,7 +940,7 @@ class DownloadQueue(metaclass=Singleton):
             self.done.delete(id)
 
             _status: str = "Removed" if removed_files > 0 else "Cleared"
-            await self._notify.emit(
+            self._notify.emit(
                 Events.ITEM_DELETED,
                 data=item.info,
                 title=f"Download {_status}",
@@ -1086,7 +1077,6 @@ class DownloadQueue(metaclass=Singleton):
             await entry.close()
 
         if self.queue.exists(key=id):
-            _tasks = []
             LOG.debug(f"Download Task '{id}' is completed. Removing from queue.")
             self.queue.delete(key=id)
 
@@ -1096,7 +1086,7 @@ class DownloadQueue(metaclass=Singleton):
             if entry.is_cancelled() is True:
                 nTitle = "Download Cancelled"
                 nMessage = f"Cancelled '{entry.info.title}' download."
-                await self._notify.emit(Events.ITEM_CANCELLED, data=entry.info, title=nTitle, message=nMessage)
+                self._notify.emit(Events.ITEM_CANCELLED, data=entry.info, title=nTitle, message=nMessage)
                 entry.info.status = "cancelled"
 
             if entry.info.status == "finished" and entry.info.filename:
@@ -1105,19 +1095,15 @@ class DownloadQueue(metaclass=Singleton):
                 if entry.info.is_archivable and not entry.info.is_archived:
                     entry.info.is_archived = True
 
-                _tasks.append(self._notify.emit(Events.ITEM_COMPLETED, data=entry.info, title=nTitle, message=nMessage))
+                self._notify.emit(Events.ITEM_COMPLETED, data=entry.info, title=nTitle, message=nMessage)
 
             self.done.put(entry)
-            _tasks.append(
+            self._notify.emit(
-                self._notify.emit(
+                Events.ITEM_MOVED,
-                    Events.ITEM_MOVED,
+                data={"to": "history", "preset": entry.info.preset, "item": entry.info},
-                    data={"to": "history", "preset": entry.info.preset, "item": entry.info},
+                title=nTitle,
-                    title=nTitle,
+                message=nMessage,
-                    message=nMessage,
-                )
             )
-
-            await asyncio.gather(*_tasks)
         else:
             LOG.warning(f"Download '{id}' not found in queue.")
 
@@ -1223,7 +1209,6 @@ class DownloadQueue(metaclass=Singleton):
             return
 
         if exc := task.exception():
-            import traceback
 
             task_name: str = task.get_name() if task.get_name() else "unknown_task"
             LOG.error(f"Unhandled exception in background task '{task_name}': {exc!s}. {traceback.format_exc()}")

app/library/Events.py

@@ -145,6 +145,9 @@ class Event:
     data: Any
     """The data that was passed to the event."""
 
+    extras: dict = field(default_factory=dict)
+    """Listeners can add extra data to the event."""
+
     def serialize(self) -> dict:
         """
         Serialize the event.
@@ -162,9 +165,20 @@ class Event:
             "data": self.data,
         }
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return f"Event(id={self.id}, created_at={self.created_at}, event={self.event}, title={self.title}, message={self.message} data={self.data})"
 
+    def put(self, key: str, value: Any) -> None:
+        """
+        Put extra data to the event.
+
+        Args:
+            key (str): The key of the extra data.
+            value (Any): The value of the extra data.
+
+        """
+        self.extras[key] = value
+
     def datatype(self) -> str:
         """
         Get the datatype of the data.
@@ -210,17 +224,12 @@ class EventBus(metaclass=Singleton):
     debug: bool = False
     """Whether to log debug messages or not."""
 
-    _offload: BackgroundWorker
+    _offload: BackgroundWorker = None
     """The background worker to offload tasks to."""
 
     def __init__(self):
         EventBus._instance = self
 
-        from .config import Config
-
-        self.debug = Config.get_instance().debug
-        self._offload = BackgroundWorker.get_instance()
-
     @staticmethod
     def get_instance() -> "EventBus":
         """
@@ -305,84 +314,11 @@ class EventBus(metaclass=Singleton):
 
         return self
 
-    def sync_emit(
+    def emit(
-        self,
-        event: str,
-        data: Any | None = None,
-        title: str | None = None,
-        message: str | None = None,
-        loop=None,
-        wait: bool = True,
-        **kwargs,
-    ):
-        """
-        Emit event and (optionally) wait for results.
-
-        Args:
-            event (str): The event to emit.
-            data (Any|None): The data to pass to the event.
-            title (str | None): The title of the event, if any.
-            message (str | None): The message of the event, if any.
-            loop (asyncio.AbstractEventLoop | None): The event loop to use. If None, the current running loop is used.
-            wait (bool): Whether to wait for the results of the event handlers. Defaults to True.
-            **kwargs: Additional keyword arguments to pass to the event
-
-        Returns:
-            list: The results are the return values of the coroutines. If the coroutine raises an exception,
-                  the exception is caught and logged. If event does not exist, an empty list is returned.
-                  If wait is False, a list of asyncio.Task objects is returned instead if we are in a running event loop,
-                  or the result of the coroutine if we are not in a running event loop.
-
-        """
-        if event not in self._listeners:
-            return []
-
-        if not data:
-            data = {}
-
-        async def emit_all():
-            ev = Event(event=event, title=title, message=message, data=data)
-            LOG.debug(f"Emitting event '{ev.id}: {ev.event}'.", extra={"data": data})
-
-            res: list = []
-
-            for h in self._listeners[event].values():
-                try:
-                    res.append(await h.handle(ev, **kwargs))
-                except Exception as e:
-                    LOG.exception(e)
-                    LOG.error(f"Failed to emit event '{event}' to '{h.name}'. Error message '{e!s}'.")
-
-            return res
-
-        try:
-            loop = loop or asyncio.get_running_loop()
-            in_same_loop: bool = asyncio.get_running_loop() is loop
-        except RuntimeError:
-            loop = None
-            in_same_loop = False
-
-        if loop is None or not loop.is_running():
-            return asyncio.run(emit_all())
-
-        if in_same_loop:
-            if wait:
-                msg = (
-                    "Calling EventsBus.sync_emit(...,wait=True) from within the running event loop would cause dead-lock. "
-                    "Use `await EventsBus.emit(...)` or `EventsBus.sync_emit(..., wait=False)`."
-                )
-                raise RuntimeError(msg)
-
-            return loop.create_task(emit_all())
-
-        fut = asyncio.run_coroutine_threadsafe(emit_all(), loop)
-        return fut.result() if wait else fut
-
-    async def emit(
         self, event: str, data: Any | None = None, title: str | None = None, message: str | None = None, **kwargs
-    ) -> Awaitable:
+    ) -> None:
         """
-        Emit an event.
+        Emit an event to all registered listeners.
 
         Args:
             event (str): The event to emit.
@@ -391,44 +327,6 @@ class EventBus(metaclass=Singleton):
             message (str | None): The message of the event, if any.
             **kwargs: The keyword arguments to pass to the event.
 
-        Returns:
-            Awaitable: The task that was created to run the event.
-
-        """
-        if event not in self._listeners:
-            return []
-
-        if not data:
-            data = {}
-
-        ev = Event(event=event, title=title, message=message, data=data)
-
-        if self.debug or event not in Events.only_debug():
-            LOG.debug(f"Emitting event '{ev.id}: {ev.event}'.", extra={"data": data})
-
-        tasks = []
-        for handler in self._listeners[event].values():
-            try:
-                tasks.append(handler.handle(ev, **kwargs))
-            except Exception as e:
-                LOG.exception(e)
-                LOG.error(f"Failed to emit event '{ev.event}' to '{handler.name}'. Error message '{e!s}'.")
-
-        return asyncio.gather(*tasks)
-
-    def offload(
-        self, event: str, title: str | None = None, message: str | None = None, data: Any | None = None, **kwargs
-    ) -> None:
-        """
-        Offload an dispatching event to a background worker.
-
-        Args:
-            event (str): The event to offload.
-            data (Any|None): The data to pass to the event.
-            title (str | None): The title of the event, if any.
-            message (str | None): The message of the event, if any.
-            **kwargs: Additional keyword arguments to pass to the event.
-
         """
         if event not in self._listeners:
             return
@@ -439,11 +337,57 @@ class EventBus(metaclass=Singleton):
         ev = Event(event=event, title=title, message=message, data=data)
 
         if self.debug or event not in Events.only_debug():
-            LOG.debug(f"Offloading event '{ev.id}: {ev.event}'.", extra={"data": data})
+            LOG.debug(f"Emitting event '{ev.id}: {ev.event}'.", extra={"data": data})
 
-        for handler in self._listeners[event].values():
+        try:
-            try:
+            loop = asyncio.get_running_loop()
-                self._offload.submit(handler.handle, ev, **kwargs)
+
-            except Exception as e:
+            for handler in self._listeners[event].values():
-                LOG.exception(e)
+                try:
-                LOG.error(f"Failed to offload event '{ev.event}' to '{handler.name}'. Error message '{e!s}'.")
+                    if handler.is_coroutine:
+                        coro = handler.call_back(ev, handler.name, **kwargs)
+                        if asyncio.iscoroutine(coro):
+                            loop.create_task(coro)
+                        else:
+                            LOG.warning(f"Expected coroutine from async handler '{handler.name}', got {type(coro)}")
+                    else:
+                        loop.create_task(self._call(handler, ev, kwargs), name=f"sync-handler-{handler.name}-{ev.id}")
+                except Exception as e:
+                    LOG.exception(e)
+                    LOG.error(f"Failed to emit event '{ev.event}' to '{handler.name}'. Error message '{e!s}'.")
+        except RuntimeError:
+            LOG.debug(f"No event loop detected - using BackgroundWorker for {len(self._listeners[event])} handlers")
+            for handler in self._listeners[event].values():
+                try:
+                    if not self._offload:
+                        self._offload = BackgroundWorker.get_instance()
+
+                    self._offload.submit(handler.handle, ev, **kwargs)
+                except Exception as e:
+                    LOG.exception(e)
+                    LOG.error(f"Failed to emit event '{ev.event}' to '{handler.name}'. Error message '{e!s}'.")
+
+    def clear(self) -> None:
+        """
+        Clear all listeners. Useful for testing.
+        """
+        self._listeners.clear()
+
+    def debug_enable(self) -> None:
+        """
+        Enable debug logging.
+        """
+        self.debug = True
+
+    def debug_disable(self) -> None:
+        """
+        Disable debug logging.
+        """
+        self.debug = False
+
+    @staticmethod
+    def _call(h, event, kw):
+        async def call_handler():
+            return h.call_back(event, h.name, **kw)
+
+        return call_handler()

app/library/HttpSocket.py

@@ -52,10 +52,10 @@ class HttpSocket:
             ping_timeout=5,
         )
         encoder = encoder or Encoder()
-        self.rootPath = root_path
+        self.rootPath: Path = root_path
 
-        def emit(e: Event, _, **kwargs):
+        async def event_handler(e: Event, _, **kwargs):
-            return self.sio.emit(event=e.event, data=encoder.encode(e), **kwargs)
+            await self.sio.emit(event=e.event, data=encoder.encode(e), **kwargs)
 
         services = Services.get_instance()
         services.add_all(
@@ -73,7 +73,7 @@ class HttpSocket:
             }
         )
 
-        self._notify.subscribe("frontend", emit, f"{__class__.__name__}.emit")
+        self._notify.subscribe("frontend", event_handler, f"{__class__.__name__}.emit")
 
     @staticmethod
     def ws_event(func):  # type: ignore
@@ -101,11 +101,12 @@ class HttpSocket:
         app.on_shutdown.append(self.on_shutdown)
 
         self.sio.attach(app, socketio_path=f"{self.config.base_path.rstrip('/')}/socket.io")
-        self._notify.subscribe(
+
-            Events.ADD_URL,
+        async def event_handler(data: Event, _):
-            lambda data, _, **kwargs: self.queue.add(item=Item.format(data.data)),  # noqa: ARG005
+            if data and data.data:
-            f"{__class__.__name__}.add",
+                await self.queue.add(item=Item.format(data.data))
-        )
+
+        self._notify.subscribe(Events.ADD_URL, event_handler, f"{__class__.__name__}.add")
 
         load_modules(self.rootPath, self.rootPath / "routes" / "socket")
 

app/library/Notifications.py

@@ -505,13 +505,12 @@ class Notification(metaclass=Singleton):
             LOG.error(f"Error sending Notification event '{ev.event}: {ev.id}' to '{target.name}'. '{err_msg!s}'.")
             return {"url": target.request.url, "status": 500, "text": str(ev)}
 
-    def emit(self, e: Event, _, **__):
+    def emit(self, e: Event, _, **__) -> None:
         if len(self._targets) < 1 or not NotificationEvents.is_valid(e.event):
-            return self.noop()
+            return
 
         self._offload.submit(self.send, e)
-
+        return
-        return self.noop()
 
     def _deep_unpack(self, data: dict) -> dict:
         for k, v in data.items():

app/library/Presets.py

@@ -136,7 +136,7 @@ class Presets(metaclass=Singleton):
                 LOG.error(f"Failed to parse default preset ':{i}'. '{e!s}'.")
                 continue
 
-        def event_handler(_, __):
+        async def event_handler(_, __):
             msg = "Not implemented"
             raise Exception(msg)
 

app/library/Scheduler.py

@@ -26,11 +26,11 @@ class Scheduler(metaclass=Singleton):
 
         self._loop = loop or asyncio.get_event_loop()
 
-        EventBus.get_instance().subscribe(
+        async def event_handler(data, _):
-            Events.SCHEDULE_ADD,
+            if data and data.data:
-            lambda data, _, **kwargs: self.add(**data.data),  # noqa: ARG005
+                self.add(**data.data)
-            f"{__class__.__name__}.add",
+
-        )
+        EventBus.get_instance().subscribe(Events.SCHEDULE_ADD, event_handler, f"{__class__.__name__}.add")
 
     @staticmethod
     def get_instance() -> "Scheduler":

app/library/Tasks.py

@@ -193,11 +193,12 @@ class Tasks(metaclass=Singleton):
 
         """
         self.load()
-        self._notify.subscribe(
+
-            Events.TASKS_ADD,
+        async def event_handler(data, _):
-            lambda data, _, **kwargs: self.save(**data.data),  # noqa: ARG005
+            if data and data.data:
-            f"{__class__.__name__}.add",
+                self.save(data.data)
-        )
+
+        self._notify.subscribe(Events.TASKS_ADD, event_handler, f"{__class__.__name__}.add")
         self._task_handler.load()
 
     def get_all(self) -> list[Task]:
@@ -449,7 +450,7 @@ class Tasks(metaclass=Singleton):
             await asyncio.gather(*_tasks)
         except Exception as e:
             LOG.error(f"Failed to execute '{task.name}' at '{timeNow}'. '{e!s}'.")
-            await self._notify.emit(
+            self._notify.emit(
                 Events.LOG_ERROR,
                 data={"preset": task.preset},
                 title="Task failed",

app/library/Utils.py

@@ -16,9 +16,10 @@ from pathlib import Path
 from typing import Any, TypeVar
 
 from Crypto.Cipher import AES
-from yt_dlp.utils import age_restricted, match_str
+from yt_dlp.utils import age_restricted
 
 from .LogWrapper import LogWrapper
+from .mini_filter import match_str
 from .ytdlp import YTDLP
 
 LOG: logging.Logger = logging.getLogger("Utils")
@@ -225,38 +226,116 @@ def extract_info(
     return YTDLP.sanitize_info(data) if sanitize_info else data
 
 
-def merge_dict(source: dict, destination: dict) -> dict:
+def _is_safe_key(key: any) -> bool:
     """
-    Merge data from source into destination safely.
+    Check if a dictionary key is safe for merging.
+
+    Blocks:
+    - All dunder attributes (__*__)
+    - Non-string keys (for consistency)
+    - Keys that could be dangerous variations
+    """
+    # Only allow string keys
+    if not isinstance(key, str):
+        return False
+
+    # Block empty keys and whitespace-only keys
+    if not key or not key.strip():
+        return False
+
+    # Block only truly dangerous dunder patterns
+    key_stripped = key.strip()
+
+    # Block dunder attributes (starts AND ends with __)
+    return not (key_stripped.startswith("__") and key_stripped.endswith("__"))
+
+
+def merge_dict(
+    source: dict, destination: dict, max_depth: int = 50, max_list_size: int = 10000, _depth: int = 0, _seen: set = None
+) -> dict:
+    """
+    Merge data from source into destination safely with protection against DoS attacks.
 
     Args:
         source (dict): Source data
         destination (dict): Destination data
+        max_depth (int): Maximum recursion depth allowed (default: 50)
+        max_list_size (int): Maximum list size allowed (default: 10000)
+        _depth (int): Internal recursion depth counter
+        _seen (set): Internal circular reference tracker
 
     Returns:
         dict: The merged dictionary
 
+    Raises:
+        TypeError: If source or destination are not dictionaries
+        RecursionError: If recursion depth exceeds safety limit
+        ValueError: If circular reference is detected
+
     """
     if not isinstance(source, dict) or not isinstance(destination, dict):
         msg = "Both source and destination must be dictionaries."
         raise TypeError(msg)
 
-    destination_copy = copy.deepcopy(destination)
+    # Prevent deep recursion DoS
+    if _depth > max_depth:
+        msg = f"Recursion depth limit exceeded ({max_depth})"
+        raise RecursionError(msg)
+
+    # Initialize circular reference tracking
+    if _seen is None:
+        _seen = set()
+
+    # Check for circular references
+    source_id = id(source)
+    dest_id = id(destination)
+    if source_id in _seen or dest_id in _seen:
+        msg = "Circular reference detected"
+        raise ValueError(msg)
+
+    # Track current objects
+    current_seen = _seen | {source_id, dest_id}
+
+    # Create a clean copy of destination with only safe keys
+    destination_copy = {}
+    for k, v in destination.items():
+        if _is_safe_key(k):
+            # Prevent memory DoS from large lists
+            if isinstance(v, list) and len(v) > max_list_size:
+                destination_copy[k] = v[:max_list_size]  # Truncate large lists
+            else:
+                destination_copy[k] = copy.deepcopy(v)
 
     for key, value in source.items():
-        if key in {"__class__", "__dict__", "__globals__", "__builtins__"}:
+        # Skip unsafe keys
+        if not _is_safe_key(key):
             continue
 
         destination_value = destination_copy.get(key)
 
-        # Recursively merge dictionaries
+        # Recursively merge dictionaries with safety checks
         if isinstance(value, dict) and isinstance(destination_value, dict):
-            destination_copy[key] = merge_dict(value, destination_value)
+            destination_copy[key] = merge_dict(
+                value, destination_value, max_depth, max_list_size, _depth + 1, current_seen
+            )
 
-        # Safely extend lists without reference issues
+        # Safely extend lists with size limits
         elif isinstance(value, list) and isinstance(destination_value, list):
-            destination_copy[key] = copy.deepcopy(destination_value) + copy.deepcopy(value)
+            # Prevent memory DoS
-
+            combined_size = len(value) + len(destination_value)
+            if combined_size > max_list_size:
+                # Truncate to stay within limits
+                available_space = max_list_size - len(destination_value)
+                truncated_value = value[: max(0, available_space)]
+                destination_copy[key] = copy.deepcopy(destination_value) + copy.deepcopy(truncated_value)
+            else:
+                destination_copy[key] = copy.deepcopy(destination_value) + copy.deepcopy(value)
+        # For non-dict values or when destination doesn't have the key
+        elif isinstance(value, dict):
+            destination_copy[key] = merge_dict(value, {}, max_depth, max_list_size, _depth + 1, current_seen)
+        elif isinstance(value, list) and len(value) > max_list_size:
+            # Truncate large lists
+            destination_copy[key] = copy.deepcopy(value[:max_list_size])
         else:
             destination_copy[key] = copy.deepcopy(value)
 

app/library/conditions.py

@@ -10,6 +10,7 @@ from aiohttp import web
 from .config import Config
 from .encoder import Encoder
 from .Events import EventBus, Events
+from .mini_filter import match_str
 from .Singleton import Singleton
 from .Utils import arg_converter, init_class
 
@@ -67,7 +68,7 @@ class Conditions(metaclass=Singleton):
             except Exception:
                 pass
 
-        def event_handler(_, __):
+        async def event_handler(_, __):
             msg = "Not implemented"
             raise Exception(msg)
 
@@ -183,8 +184,6 @@ class Conditions(metaclass=Singleton):
             bool: True if valid, False otherwise.
 
         """
-        from yt_dlp.utils import match_str
-
         if not isinstance(item, dict):
             if not isinstance(item, Condition):
                 msg = f"Unexpected '{type(item).__name__}' item type."
@@ -306,8 +305,6 @@ class Conditions(metaclass=Singleton):
         if len(self._items) < 1 or not info or not isinstance(info, dict) or len(info) < 1:
             return None
 
-        from yt_dlp.utils import match_str
-
         for item in self.get_all():
             if not item.filter:
                 LOG.error(f"Filter is empty for '{item.name}'.")
@@ -343,6 +340,4 @@ class Conditions(metaclass=Singleton):
         if not item or not item.filter:
             return None
 
-        from yt_dlp.utils import match_str
-
         return item if match_str(item.filter, info) else None

app/library/dl_fields.py

@@ -122,7 +122,7 @@ class DLFields(metaclass=Singleton):
             except Exception:
                 pass
 
-        def event_handler(_, __):
+        async def event_handler(_, __):
             msg = "Not implemented"
             raise Exception(msg)
 

app/library/mini_filter.py

@@ -0,0 +1,297 @@
+import operator
+import re
+from typing import Any
+
+TOKEN = tuple[str, str]
+AST_NODE = tuple[str, ...]
+
+
+def match_str(expr: str, dct: dict) -> bool:
+    """
+    Convenience function to evaluate a filter expression against a dict.
+
+    Note: This implementation uses numeric duration/filesize values in tests to avoid
+    yt-dlp's inconsistent unit parsing behavior. yt-dlp's match_str has known issues
+    with duration unit formats like "2m" that don't behave consistently with their
+    numeric equivalents (e.g., "120").
+
+    Args:
+        expr (str): Filter expression string
+        dct (dict):  Dictionary of values to check against
+
+    Returns:
+        bool: True/False if expression matches
+
+    """
+    return MiniFilter(expr).evaluate(dct)
+
+
+class MiniFilter:
+    """
+    Parser and evaluator for yt-dlp style match-filters, extended with
+    support for OR (`||`) and grouping with parentheses.
+
+    Features:
+    - Supports AND (`&`), OR (`||`), and parentheses `()`
+    - Reuses yt-dlp style operators (=, >=, *=, ~=, etc.)
+    - Export to yt-dlp compatible `--match-filters`.
+    """
+
+    # Type aliases for better readability
+    Token = tuple[str, str]
+    ASTNode = tuple[str, ...]
+
+    # Supported string operators
+    STRING_OPERATORS: dict[str, callable] = {
+        "*=": operator.contains,
+        "^=": lambda attr, value: isinstance(attr, str) and attr.startswith(value),
+        "$=": lambda attr, value: isinstance(attr, str) and attr.endswith(value),
+        "~=": lambda attr, value: bool(re.search(value, attr or "")),
+    }
+
+    # Comparison operators (numeric + string)
+    COMPARISON_OPERATORS: dict[str, callable] = {
+        **STRING_OPERATORS,
+        "<=": operator.le,
+        "<": operator.lt,
+        ">=": operator.ge,
+        ">": operator.gt,
+        "=": operator.eq,
+    }
+
+    # Unary operators (for presence/absence checks)
+    UNARY_OPERATORS: dict[str, callable] = {
+        "": lambda v: (v is True) if isinstance(v, bool) else (v is not None),
+        "!": lambda v: (v is False) if isinstance(v, bool) else (v is None),
+    }
+
+    def __init__(self, expr: str) -> None:
+        """
+        Initialize a parser for the given filter expression.
+
+        :param expr: Filter expression string, e.g. "(duration<10m & filesize>1MB) || uploader*='BBC'"
+        """
+        self.expr: str = expr
+        self.tokens: list[TOKEN] = self._tokenize(expr)
+        self.pos: int = 0
+        self.ast: AST_NODE = self._parse_or()
+
+    @staticmethod
+    def run(expr: str, dct: dict | bool = False) -> bool:
+        """
+        Convenience method to evaluate an expression directly.
+
+        :param expr: Filter expression string
+        :param dct:  Dictionary of values to check against
+        :return:     True/False if expression matches
+        """
+        return MiniFilter(expr).evaluate(dct)
+
+    def evaluate(self, dct: dict | bool = False) -> bool:
+        """
+        Evaluate the parsed expression against a dictionary.
+
+        :param dct: Dictionary of attributes (video metadata, etc.)
+        :return:    True/False result of expression
+        """
+        return self._eval(self.ast, dct)
+
+    def export(self) -> list[str]:
+        """
+        Export expression into yt-dlp compatible `--match-filters` strings.
+
+        Since yt-dlp does not support OR (`||`) or parentheses,
+        this method flattens the expression into multiple AND-only strings.
+
+        Example:
+            (a=1 & b=2) || c=3
+            → ["a=1&b=2", "c=3"]
+
+        :return: List of AND-only filter strings
+
+        """
+        return ["&".join(parts) for parts in self._export(self.ast)]
+
+    def _tokenize(self, expr: str) -> list[TOKEN]:
+        """
+        Split expression into tokens (AND, OR, LPAREN, RPAREN, ATOM).
+        Ensures that OR (||) and AND (&) are recognized before ATOM.
+        """
+        # First, let's normalize spaces around operators to make parsing easier
+        # Replace spaced operators with non-spaced ones
+        normalized_expr: str = expr
+        for op in ["<=", ">=", "<", ">", "*=", "^=", "$=", "~=", "="]:
+            # Replace "key op value" with "key op value" (removing extra spaces)
+            pattern: str = rf"([a-z_]+)\s*(!?)\s*({re.escape(op)})\s*"
+            replacement = r"\1\2\3"
+            normalized_expr = re.sub(pattern, replacement, normalized_expr)
+
+        token_spec: list[set] = [
+            (r"\|\|", "OR"),  # must come before ATOM
+            (r"&", "AND"),
+            (r"\(", "LPAREN"),
+            (r"\)", "RPAREN"),
+            (r"[^\s&|()]+", "ATOM"),  # don't allow whitespace in ATOM
+            (r"\s+", None),  # skip whitespace
+        ]
+        regex: str = "|".join(f"(?P<{name}>{pat})" for pat, name in token_spec if name)
+        master: re.Pattern[str] = re.compile(regex)
+        tokens: list[TOKEN] = []
+        for m in master.finditer(normalized_expr):
+            kind: str | None = m.lastgroup
+            if kind:
+                tokens.append((kind, m.group()))
+        return tokens
+
+    def _parse_or(self) -> AST_NODE:
+        """
+        Parse OR-expression: and_expr ('||' and_expr)*
+        """
+        left: AST_NODE = self._parse_and()
+        while self._accept("OR"):
+            right: AST_NODE = self._parse_and()
+            left = ("OR", left, right)
+        return left
+
+    def _parse_and(self) -> AST_NODE:
+        """
+        Parse AND-expression: atom ('&' atom)*
+        """
+        left: AST_NODE = self._parse_atom()
+        while self._accept("AND"):
+            right: AST_NODE = self._parse_atom()
+            left = ("AND", left, right)
+        return left
+
+    def _parse_atom(self) -> AST_NODE:
+        """
+        Parse atomic expression: '(' expr ')' | ATOM
+        """
+        if self._accept("LPAREN"):
+            node: AST_NODE = self._parse_or()
+            self._expect("RPAREN")
+            return node
+
+        tok: TOKEN = self._expect("ATOM")
+        return ("ATOM", tok[1].strip())
+
+    def _accept(self, kind: str) -> bool:
+        """
+        Consume token if it matches expected kind.
+        """
+        if self.pos < len(self.tokens) and kind == self.tokens[self.pos][0]:
+            self.pos += 1
+            return True
+
+        return False
+
+    def _expect(self, kind: str) -> TOKEN:
+        """
+        Consume and return token if it matches expected kind,
+        otherwise raise SyntaxError.
+        """
+        if self.pos < len(self.tokens) and kind == self.tokens[self.pos][0]:
+            tok = self.tokens[self.pos]
+            self.pos += 1
+            return tok
+
+        raise SyntaxError("Expected " + kind)
+
+    def _eval(self, node: AST_NODE, dct: dict) -> bool:
+        """
+        Recursively evaluate AST node against dict.
+        """
+        node_type: str = node[0]
+
+        if "ATOM" == node_type:
+            return self._match_one(node[1], dct)
+
+        if "AND" == node_type:
+            return self._eval(node[1], dct) and self._eval(node[2], dct)
+
+        if "OR" == node_type:
+            return self._eval(node[1], dct) or self._eval(node[2], dct)
+
+        raise ValueError("Invalid AST node " + node_type)
+
+    def _export(self, node: AST_NODE) -> list[list[str]]:
+        """
+        Recursively flatten AST into AND-only filter groups.
+        """
+        node_type = node[0]
+        if "ATOM" == node_type:
+            return [[node[1]]]
+
+        if "AND" == node_type:
+            left: list[list[str]] = self._export(node[1])
+            right: list[list[str]] = self._export(node[2])
+            return [_l + _r for _l in left for _r in right]
+
+        if "OR" == node_type:
+            left = self._export(node[1])
+            right = self._export(node[2])
+            return left + right
+
+        raise ValueError("Invalid AST node " + node_type)
+
+    def _match_one(self, filter_part: str, dct: dict) -> bool:
+        operator_rex: re.Pattern[str] = re.compile(
+            r"""(?x)
+            (?P<key>[a-z_]+)
+            \s*(?P<negation>!\s*)?(?P<op>{})(?P<none_inclusive>\s*\?)?\s*
+            (?:
+                (?P<quote>["\'])(?P<quoted_strval>.+?)(?P=quote)|
+                (?P<strval>.+?)
+            )
+            """.format("|".join(map(re.escape, self.COMPARISON_OPERATORS.keys())))
+        )
+
+        if m := operator_rex.fullmatch(filter_part.strip()):
+            from yt_dlp.utils import parse_duration, parse_filesize
+
+            g: dict[str, str | Any] = m.groupdict()
+            unnegated_op: Any = self.COMPARISON_OPERATORS[g["op"]]
+            op = (lambda a, v: not unnegated_op(a, v)) if g["negation"] else unnegated_op
+
+            comparison_value: str | Any = g["quoted_strval"] or g["strval"]
+
+            if g["quote"]:
+                comparison_value = comparison_value.replace(rf"\{g['quote']}", g["quote"])
+
+            actual_value: Any | None = dct.get(g["key"])
+
+            if None is actual_value:
+                return False
+
+            # numeric coercion using yt-dlp utils
+            numeric_comparison = None
+            try:
+                numeric_comparison = int(comparison_value)
+            except ValueError:
+                numeric_comparison: int | None | float = parse_filesize(comparison_value) or parse_duration(
+                    comparison_value
+                )
+
+            if numeric_comparison is not None and g["op"] in self.STRING_OPERATORS:
+                msg = f"Operator {g['op']} only supports string values!"
+                raise ValueError(msg)
+
+            # Also try to convert actual_value to numeric if we have a numeric comparison
+            final_actual_value = actual_value
+            if numeric_comparison is not None and isinstance(actual_value, str):
+                try:
+                    final_actual_value = int(actual_value)
+                except ValueError:
+                    final_actual_value = parse_filesize(actual_value) or parse_duration(actual_value) or actual_value
+
+            return op(final_actual_value, numeric_comparison if None is not numeric_comparison else comparison_value)
+
+        # unary operators
+        operator_rex = re.compile(r"(?P<op>{})\s*(?P<key>[a-z_]+)".format("|".join(self.UNARY_OPERATORS)))
+        if m := operator_rex.fullmatch(filter_part.strip()):
+            op: Any = self.UNARY_OPERATORS[m.group("op")]
+            actual_value = dct.get(m.group("key"))
+            return op(actual_value)
+
+        msg: str = f"Invalid filter part {filter_part!r}"
+        raise ValueError(msg)

app/library/task_handlers/_base_handler.py

@@ -26,11 +26,11 @@ class BaseHandler:
         if "failure_count" not in cls.__dict__:
             cls.failure_count = {}
 
-        EventBus.get_instance().subscribe(
+        async def event_handler(data, _):
-            Events.ITEM_ERROR,
+            if data and data.data:
-            lambda data, _, **__: cls.on_error(data.data),
+                await cls.on_error(data.data)
-            f"{cls.__name__}.on_error",
+
-        )
+        EventBus.get_instance().subscribe(Events.ITEM_ERROR, event_handler, f"{cls.__name__}.on_error")
 
     @staticmethod
     def can_handle(task: Task) -> bool:

app/library/task_handlers/twitch.py

@@ -1,4 +1,3 @@
-import asyncio
 import logging
 import re
 from typing import TYPE_CHECKING
@@ -146,9 +145,8 @@ class TwitchHandler(BaseHandler):
         )
 
         try:
-            await asyncio.gather(
+            for item in filtered:
-                *[notify.emit(Events.ADD_URL, data=rItem.new_with(url=item["url"]).serialize()) for item in filtered]
+                notify.emit(Events.ADD_URL, data=rItem.new_with(url=item["url"]).serialize())
-            )
         except Exception as e:
             LOG.exception(e)
             LOG.error(f"Error while adding items from '{task.name}'. {e!s}")

app/library/task_handlers/youtube.py

@@ -1,4 +1,3 @@
-import asyncio
 import logging
 import re
 from typing import TYPE_CHECKING
@@ -153,9 +152,8 @@ class YoutubeHandler(BaseHandler):
         )
 
         try:
-            await asyncio.gather(
+            for item in filtered:
-                *[notify.emit(Events.ADD_URL, data=rItem.new_with(url=item["url"]).serialize()) for item in filtered]
+                notify.emit(Events.ADD_URL, data=rItem.new_with(url=item["url"]).serialize())
-            )
         except Exception as e:
             LOG.exception(e)
             LOG.error(f"'{task.name}': Error while adding items from task feed. {e!s}")

app/local.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# flake8: noqa: SIM115 S310 T201
+# flake8: noqa: S310 T201
 
 import argparse
 import os

app/main.py

@@ -38,7 +38,7 @@ ROOT_PATH: Path = Path(__file__).parent.absolute()
 
 class Main:
     def __init__(self, is_native: bool = False):
-        self._config = Config.get_instance(is_native=is_native)
+        self._config: Config = Config.get_instance(is_native=is_native)
         self._app = web.Application()
         self._app.on_shutdown.append(self.on_shutdown)
         self._background_worker = BackgroundWorker()
@@ -98,7 +98,7 @@ class Main:
             raise
 
     async def on_shutdown(self, _: web.Application):
-        await EventBus.get_instance().emit(
+        EventBus.get_instance().emit(
             Events.SHUTDOWN,
             data={"app": self._app},
             title="Application Shutdown",
@@ -112,12 +112,15 @@ class Main:
         host = host or self._config.host
         port = port or self._config.port
 
-        EventBus.get_instance().sync_emit(
+        EventBus.get_instance().emit(
             Events.STARTUP,
             data={"app": self._app},
             title="Application Startup",
             message="The application is starting up.",
         )
+        if self._config.debug:
+            EventBus.get_instance().debug_enable()
+
         Scheduler.get_instance().attach(self._app)
 
         self._socket.attach(self._app)
@@ -131,7 +134,7 @@ class Main:
         DLFields.get_instance().attach(self._app)
         self._background_worker.attach(self._app)
 
-        EventBus.get_instance().sync_emit(
+        EventBus.get_instance().emit(
             Events.LOADED,
             data={"app": self._app},
             title="Application Loaded",
@@ -147,13 +150,11 @@ class Main:
 
             loop = asyncio.get_event_loop()
 
-            EventBus.get_instance().sync_emit(
+            EventBus.get_instance().emit(
                 Events.STARTED,
                 data={"app": self._app},
                 title="Application Started",
                 message="The application has started successfully.",
-                loop=loop,
-                wait=False,
             )
 
             if loop and self._config.debug:

app/routes/api/conditions.py

@@ -10,6 +10,7 @@ from app.library.conditions import Condition, Conditions
 from app.library.config import Config
 from app.library.encoder import Encoder
 from app.library.Events import EventBus, Events
+from app.library.mini_filter import match_str
 from app.library.router import route
 from app.library.Utils import extract_info, init_class, validate_uuid
 from app.library.YTDLPOpts import YTDLPOpts
@@ -113,7 +114,7 @@ async def conditions_add(request: Request, encoder: Encoder, notify: EventBus) -
             status=web.HTTPInternalServerError.status_code,
         )
 
-    await notify.emit(Events.CONDITIONS_UPDATE, data=items)
+    notify.emit(Events.CONDITIONS_UPDATE, data=items)
     return web.json_response(data=items, status=web.HTTPOk.status_code, dumps=encoder.encode)
 
 
@@ -181,8 +182,6 @@ async def conditions_test(request: Request, encoder: Encoder, cache: Cache, conf
         )
 
     try:
-        from yt_dlp.utils import match_str
-
         status = match_str(cond, data)
     except Exception as e:
         LOG.exception(e)

app/routes/api/dl_fields.py

@@ -96,5 +96,5 @@ async def dl_fields_add(request: Request, encoder: Encoder, notify: EventBus) ->
             status=web.HTTPInternalServerError.status_code,
         )
 
-    await notify.emit(Events.DLFIELDS_UPDATE, data=items)
+    notify.emit(Events.DLFIELDS_UPDATE, data=items)
     return web.json_response(data=items, status=web.HTTPOk.status_code, dumps=encoder.encode)

app/routes/api/history.py

@@ -169,7 +169,7 @@ async def item_update(request: Request, queue: DownloadQueue, encoder: Encoder,
 
     if updated:
         queue.done.put(item)
-        await notify.emit(Events.ITEM_UPDATED, data=item.info)
+        notify.emit(Events.ITEM_UPDATED, data=item.info)
 
     return web.json_response(
         data=item.info,
@@ -309,7 +309,7 @@ async def item_archive_add(request: Request, queue: DownloadQueue, notify: Event
 
     item.info.archive_status(force=True)
     queue.done.put(item, no_notify=True)
-    await notify.emit(Events.ITEM_UPDATED, data=item.info)
+    notify.emit(Events.ITEM_UPDATED, data=item.info)
 
     return web.json_response(
         data={"message": f"item '{item.info.title}' archived."},
@@ -367,7 +367,7 @@ async def item_archive_delete(request: Request, queue: DownloadQueue, notify: Ev
 
     item.info.archive_status(force=True)
     queue.done.put(item, no_notify=True)
-    await notify.emit(Events.ITEM_UPDATED, data=item.info)
+    notify.emit(Events.ITEM_UPDATED, data=item.info)
 
     return web.json_response(
         data={"message": f"item '{item.info.title}' removed from archive."},

app/routes/api/notifications.py

@@ -104,6 +104,6 @@ async def notification_test(encoder: Encoder, notify: EventBus) -> Response:
         Response: The response object.
 
     """
-    await notify.emit(Events.TEST, title="Test Notification", message="This is a test notification.")
+    notify.emit(Events.TEST, title="Test Notification", message="This is a test notification.")
 
     return web.json_response(data={}, status=web.HTTPOk.status_code, dumps=encoder.encode)

app/routes/api/presets.py

@@ -96,5 +96,5 @@ async def presets_add(request: Request, encoder: Encoder, notify: EventBus) -> R
             status=web.HTTPInternalServerError.status_code,
         )
 
-    await notify.emit(Events.PRESETS_UPDATE, data=presets)
+    notify.emit(Events.PRESETS_UPDATE, data=presets)
     return web.json_response(data=presets, status=web.HTTPOk.status_code, dumps=encoder.encode)

app/routes/api/system.py

@@ -40,7 +40,7 @@ async def downloads_pause(queue: DownloadQueue, encoder: Encoder, notify: EventB
     queue.pause()
 
     msg = "Non-active downloads have been paused."
-    await notify.emit(
+    notify.emit(
         Events.PAUSED,
         data={"paused": True, "at": time.time()},
         title="Downloads Paused",
@@ -75,7 +75,7 @@ async def downloads_resume(queue: DownloadQueue, encoder: Encoder, notify: Event
     queue.resume()
 
     msg = "Resumed all downloads."
-    await notify.emit(
+    notify.emit(
         Events.RESUMED,
         data={"paused": False, "at": time.time()},
         title="Downloads Resumed",
@@ -109,7 +109,7 @@ async def shutdown_system(request: Request, config: Config, encoder: Encoder, no
     app = request.app
 
     async def do_shutdown():
-        await notify.emit(
+        notify.emit(
             Events.SHUTDOWN,
             data={"app": app},
             title="Application Shutdown",

app/routes/socket/connection.py

@@ -37,7 +37,7 @@ async def connect(config: Config, queue: DownloadQueue, notify: EventBus, sid: s
         depth_limit=config.download_path_depth-1,
     )
 
-    await notify.emit(
+    notify.emit(
         Events.CONNECTED,
         data=data,
         title="Client connected",
@@ -78,7 +78,7 @@ async def subscribe(config: Config, notify: EventBus, sio: socketio.AsyncServer,
 
     """
     if not isinstance(data, str) or not data:
-        await notify.emit(
+        notify.emit(
             Events.LOG_ERROR,
             title="Subscription Error",
             message="Invalid event type was expecting a string.",

app/routes/socket/history.py

@@ -12,13 +12,13 @@ LOG: logging.Logger = logging.getLogger(__name__)
 async def add_url(queue: DownloadQueue, notify: EventBus, sid: str, data: dict):
     data = data if isinstance(data, dict) else {}
     if not (url := data.get("url", None)):
-        await notify.emit(Events.LOG_ERROR, title="Invalid request", message="No URL provided.", to=sid)
+        notify.emit(Events.LOG_ERROR, title="Invalid request", message="No URL provided.", to=sid)
         return
 
     item: Item = Item.format(data)
     try:
         status = await queue.add(item=item)
-        await notify.emit(
+        notify.emit(
             event=Events.ITEM_STATUS,
             title="Adding URL",
             message=f"Adding URL '{url}' to the download queue.",
@@ -27,7 +27,7 @@ async def add_url(queue: DownloadQueue, notify: EventBus, sid: str, data: dict):
         )
     except ValueError as e:
         LOG.exception(e)
-        await notify.emit(
+        notify.emit(
             Events.LOG_ERROR, data={"preset": item.preset}, title="Error Adding URL", message=str(e), to=sid
         )
 
@@ -35,7 +35,7 @@ async def add_url(queue: DownloadQueue, notify: EventBus, sid: str, data: dict):
 @route(RouteType.SOCKET, "item_cancel", "item_cancel")
 async def item_cancel(queue: DownloadQueue, notify: EventBus, sid: str, data: str):
     if not (data := data if isinstance(data, str) else None):
-        await notify.emit(Events.LOG_ERROR, title="Invalid Request", message="No item ID provided.", to=sid)
+        notify.emit(Events.LOG_ERROR, title="Invalid Request", message="No item ID provided.", to=sid)
         return
 
     await queue.cancel([data])
@@ -46,7 +46,7 @@ async def item_delete(queue: DownloadQueue, notify: EventBus, sid: str, data: di
     data = data if isinstance(data, dict) else {}
 
     if not (id := data.get("id", None)):
-        await notify.emit(Events.LOG_ERROR, title="Invalid Request", message="No item ID provided.", to=sid)
+        notify.emit(Events.LOG_ERROR, title="Invalid Request", message="No item ID provided.", to=sid)
         return
 
     await queue.clear([id], remove_file=bool(data.get("remove_file", False)))
@@ -55,7 +55,7 @@ async def item_delete(queue: DownloadQueue, notify: EventBus, sid: str, data: di
 @route(RouteType.SOCKET, "item_start", "item_start")
 async def item_start(queue: DownloadQueue, notify: EventBus, sid: str, data: list | str) -> None:
     if not data:
-        await notify.emit(
+        notify.emit(
             Events.LOG_ERROR,
             title="Invalid Request",
             message="No items provided to start.",
@@ -72,7 +72,7 @@ async def item_start(queue: DownloadQueue, notify: EventBus, sid: str, data: lis
 @route(RouteType.SOCKET, "item_pause", "item_pause")
 async def item_pause(queue: DownloadQueue, notify: EventBus, sid: str, data: list | str) -> None:
     if not data:
-        await notify.emit(
+        notify.emit(
             Events.LOG_ERROR,
             title="Invalid Request",
             message="No items provided to pause.",

app/routes/socket/terminal.py

@@ -17,7 +17,7 @@ LOG: logging.Logger = logging.getLogger(__name__)
 @route(RouteType.SOCKET, "cli_post", "socket_cli_post")
 async def cli_post(config: Config, notify: EventBus, sid: str, data: str):
     if not config.console_enabled:
-        await notify.emit(
+        notify.emit(
             Events.LOG_ERROR,
             title="Feature disabled",
             message="Console feature is disabled.",
@@ -26,7 +26,7 @@ async def cli_post(config: Config, notify: EventBus, sid: str, data: str):
         return
 
     if not data:
-        await notify.emit(Events.CLI_CLOSE, data={"exitcode": 0}, to=sid)
+        notify.emit(Events.CLI_CLOSE, data={"exitcode": 0}, to=sid)
         return
 
     import asyncio
@@ -93,7 +93,7 @@ async def cli_post(config: Config, notify: EventBus, sid: str, data: str):
                 assert proc.stdout is not None
                 async for raw_line in proc.stdout:
                     line = raw_line.rstrip(b"\n")
-                    await notify.emit(
+                    notify.emit(
                         Events.CLI_OUTPUT,
                         data={"type": "stdout", "line": line.decode("utf-8", errors="replace")},
                         to=sid,
@@ -112,7 +112,7 @@ async def cli_post(config: Config, notify: EventBus, sid: str, data: str):
 
                 if not chunk:
                     if buffer:
-                        await notify.emit(
+                        notify.emit(
                             Events.CLI_OUTPUT,
                             data={"type": "stdout", "line": buffer.decode("utf-8", errors="replace")},
                             to=sid,
@@ -123,7 +123,7 @@ async def cli_post(config: Config, notify: EventBus, sid: str, data: str):
                 *lines, buffer = buffer.split(b"\n")
 
                 for line in lines:
-                    await notify.emit(
+                    notify.emit(
                         Events.CLI_OUTPUT,
                         data={"type": "stdout", "line": line.decode("utf-8", errors="replace")},
                         to=sid,
@@ -141,6 +141,6 @@ async def cli_post(config: Config, notify: EventBus, sid: str, data: str):
     except Exception as e:
         LOG.error(f"CLI execute exception was thrown for client '{sid}'.")
         LOG.exception(e)
-        await notify.emit(Events.CLI_OUTPUT, data={"type": "stderr", "line": str(e)}, to=sid)
+        notify.emit(Events.CLI_OUTPUT, data={"type": "stderr", "line": str(e)}, to=sid)
     finally:
-        await notify.emit(Events.CLI_CLOSE, data={"exitcode": returncode}, to=sid)
+        notify.emit(Events.CLI_CLOSE, data={"exitcode": returncode}, to=sid)

app/tests/mini_filter_test.py

@@ -0,0 +1,481 @@
+import unittest
+from typing import Any
+
+from app.library.mini_filter import MiniFilter
+
+
+class TestMiniFilter(unittest.TestCase):
+    @staticmethod
+    def _normalize(filters) -> set[str]:
+        """
+        Normalize AND order so 'a&b' == 'b&a'
+
+        Args:
+            filters (list[str]): List of filter strings
+
+        Returns:
+            set[str]: Set of normalized filter strings
+
+        """
+        return {"&".join(sorted(p.split("&"))) for p in filters}
+
+    def _test(
+        self, expr: str, test_data: dict, *, expected_result: bool, test_name: str = "", skip_ytdlp: bool = False
+    ):
+        """
+        Test both our implementation and yt-dlp's implementation to ensure they give the same result.
+
+        This method:
+        1. Tests our implementation directly on the full expression (supports OR, grouping)
+        2. Exports our expression to yt-dlp compatible format (flattens OR/grouping to multiple AND-only filters)
+        3. Tests yt-dlp on each exported filter (OR logic: any filter match = True)
+        4. Verifies both implementations agree
+
+        Args:
+            expr: Filter expression string (may contain OR, parentheses)
+            test_data: Dictionary to test against
+            expected_result: Expected boolean result (keyword-only)
+            test_name: Optional test name for better error messages
+            skip_ytdlp: Skip yt-dlp comparison due to known bugs (keyword-only)
+
+        """
+        from yt_dlp.utils import match_str
+
+        # Step 1: Test our implementation directly
+        parser = MiniFilter(expr)
+        our_result = parser.evaluate(test_data)
+
+        # Step 2: Export to yt-dlp compatible format
+        # Our export() method flattens OR/grouping into multiple AND-only strings
+        exported_filters: list[str] = parser.export()
+
+        # Step 3: Test yt-dlp implementation (unless skipped)
+        if not skip_ytdlp:
+            # Since yt-dlp doesn't support OR, we test each exported filter separately
+            # The overall result is True if ANY exported filter matches (OR logic)
+            ytdlp_result = any(match_str(filter_part, test_data) for filter_part in exported_filters)
+
+            # Step 4b: Verify yt-dlp gives the expected result
+            assert ytdlp_result == expected_result, (
+                f"{test_name}: yt-dlp impl failed - expr: '{expr}' -> {exported_filters}, expected: {expected_result}, got: {ytdlp_result}"
+            )
+
+            # Step 5: Verify both implementations agree with each other
+            assert our_result == ytdlp_result, (
+                f"{test_name}: Implementations disagree - expr: '{expr}', our: {our_result}, yt-dlp: {ytdlp_result}, "
+                f"exported: {exported_filters}"
+            )
+
+        # Step 4a: Verify our implementation gives the expected result
+        assert our_result == expected_result, (
+            f"{test_name}: Our impl failed - expr: '{expr}', expected: {expected_result}, got: {our_result}"
+        )
+
+        return our_result
+
+    def test_simple_and(self):
+        expr = "filesize>1MB & duration<10m"
+        parser = MiniFilter(expr)
+        assert TestMiniFilter._normalize(parser.export()) == TestMiniFilter._normalize(["filesize>1MB&duration<10m"]), (
+            "Failed export check"
+        )
+
+        self._test(expr, {"filesize": 2000000, "duration": 200}, expected_result=True, test_name="simple_and_positive")
+        self._test(expr, {"filesize": 500000, "duration": 200}, expected_result=False, test_name="simple_and_negative")
+
+    def test_or(self):
+        expr = "uploader='BBC' || uploader='NHK'"
+        parser = MiniFilter(expr)
+        assert TestMiniFilter._normalize(parser.export()) == TestMiniFilter._normalize(
+            ["uploader='BBC'", "uploader='NHK'"]
+        ), "Failed export check"
+
+        self._test(expr, {"uploader": "BBC"}, expected_result=True, test_name="or_bbc")
+        self._test(expr, {"uploader": "NHK"}, expected_result=True, test_name="or_nhk")
+        self._test(expr, {"uploader": "CNN"}, expected_result=False, test_name="or_cnn")
+
+    def test_grouping(self):
+        expr = "(filesize>1MB & duration<10m) || uploader='BBC'"
+        parser = MiniFilter(expr)
+        assert TestMiniFilter._normalize(parser.export()) == TestMiniFilter._normalize(
+            ["filesize>1MB&duration<10m", "uploader='BBC'"]
+        ), "Failed export check"
+
+        self._test(
+            expr, {"filesize": 2000000, "duration": 200}, expected_result=True, test_name="grouping_filesize_match"
+        )
+        self._test(expr, {"uploader": "BBC"}, expected_result=True, test_name="grouping_uploader_match")
+        self._test(
+            expr,
+            {"filesize": 500000, "duration": 200, "uploader": "CNN"},
+            expected_result=False,
+            test_name="grouping_no_match",
+        )
+
+    def test_unary_presence(self):
+        # Test duration presence
+        self._test("duration", {"duration": 100}, expected_result=True, test_name="unary_duration_present")
+        self._test("duration", {}, expected_result=False, test_name="unary_duration_absent")
+
+        # Test duration absence
+        self._test("!duration", {}, expected_result=True, test_name="unary_not_duration_absent")
+        self._test("!duration", {"duration": 100}, expected_result=False, test_name="unary_not_duration_present")
+
+    def test_duration_units(self):
+        # Test with numeric duration values to avoid yt-dlp's inconsistent unit parsing
+        # Using 120 seconds = 2 minutes
+        self._test("duration<120", {"duration": 30}, expected_result=True, test_name="duration_120_positive")
+        self._test("duration<120", {"duration": 200}, expected_result=False, test_name="duration_120_negative")
+
+        # Test 90 seconds
+        self._test("duration<90", {"duration": 30}, expected_result=True, test_name="duration_90_positive")
+        self._test("duration<90", {"duration": 120}, expected_result=False, test_name="duration_90_negative")
+
+        # Test 3600 seconds = 1 hour
+        self._test("duration<3600", {"duration": 3599}, expected_result=True, test_name="duration_3600_positive")
+        self._test("duration<3600", {"duration": 3700}, expected_result=False, test_name="duration_3600_negative")
+
+    def test_duration_units_with_suffixes(self):
+        """Test duration comparisons with time unit suffixes (m, h). Skip yt-dlp due to known parsing bugs."""
+        # Test 2 minutes (120 seconds)
+        self._test(
+            "duration<2m", {"duration": 90}, expected_result=True, test_name="duration_2m_positive", skip_ytdlp=True
+        )
+        self._test(
+            "duration<2m", {"duration": 150}, expected_result=False, test_name="duration_2m_negative", skip_ytdlp=True
+        )
+
+        # Test 5 minutes (300 seconds)
+        self._test(
+            "duration<5m", {"duration": 240}, expected_result=True, test_name="duration_5m_positive", skip_ytdlp=True
+        )
+        self._test(
+            "duration<5m", {"duration": 360}, expected_result=False, test_name="duration_5m_negative", skip_ytdlp=True
+        )
+
+        # Test 10 minutes (600 seconds)
+        self._test(
+            "duration<10m", {"duration": 480}, expected_result=True, test_name="duration_10m_positive", skip_ytdlp=True
+        )
+        self._test(
+            "duration<10m", {"duration": 720}, expected_result=False, test_name="duration_10m_negative", skip_ytdlp=True
+        )
+
+        # Test 1 hour (3600 seconds)
+        self._test(
+            "duration<1h", {"duration": 3000}, expected_result=True, test_name="duration_1h_positive", skip_ytdlp=True
+        )
+        self._test(
+            "duration<1h", {"duration": 4000}, expected_result=False, test_name="duration_1h_negative", skip_ytdlp=True
+        )
+
+        # Test >= operator with minutes
+        self._test(
+            "duration>=5m", {"duration": 300}, expected_result=True, test_name="duration_gte_5m_equal", skip_ytdlp=True
+        )
+        self._test(
+            "duration>=5m",
+            {"duration": 400},
+            expected_result=True,
+            test_name="duration_gte_5m_greater",
+            skip_ytdlp=True,
+        )
+        self._test(
+            "duration>=5m", {"duration": 200}, expected_result=False, test_name="duration_gte_5m_less", skip_ytdlp=True
+        )
+
+    def test_filesize_units(self):
+        # Test 1MB
+        self._test("filesize>1MB", {"filesize": 2000000}, expected_result=True, test_name="filesize_1mb_positive")
+        self._test("filesize>1MB", {"filesize": 500000}, expected_result=False, test_name="filesize_1mb_negative")
+
+        # Test 1GiB
+        self._test("filesize>=1GiB", {"filesize": 2**30}, expected_result=True, test_name="filesize_1gib_positive")
+        self._test("filesize>=1GiB", {"filesize": 1000000}, expected_result=False, test_name="filesize_1gib_negative")
+
+    def test_complex_duration_units_with_or_and_grouping(self):
+        """Test complex expressions with duration units, OR operations, and grouping. Skip yt-dlp due to known parsing bugs."""
+        # Test grouping with duration units
+        expr = "(filesize>1MB & duration<10m) || uploader='BBC'"
+        self._test(
+            expr,
+            {"filesize": 2000000, "duration": 300},
+            expected_result=True,
+            test_name="complex_duration_filesize_match",
+            skip_ytdlp=True,
+        )
+        self._test(
+            expr,
+            {"uploader": "BBC"},
+            expected_result=True,
+            test_name="complex_duration_uploader_match",
+            skip_ytdlp=True,
+        )
+        self._test(
+            expr,
+            {"filesize": 500000, "duration": 300, "uploader": "CNN"},
+            expected_result=False,
+            test_name="complex_duration_no_match",
+            skip_ytdlp=True,
+        )
+
+        # Test OR with different duration units
+        expr = "duration<2m || duration>1h"
+        self._test(expr, {"duration": 60}, expected_result=True, test_name="complex_or_duration_short", skip_ytdlp=True)
+        self._test(
+            expr, {"duration": 4000}, expected_result=True, test_name="complex_or_duration_long", skip_ytdlp=True
+        )
+        self._test(
+            expr, {"duration": 1800}, expected_result=False, test_name="complex_or_duration_middle", skip_ytdlp=True
+        )
+
+        # Test complex expression with multiple duration conditions
+        expr = "(duration>30s & duration<5m) || (duration>1h & uploader*='BBC')"
+        self._test(
+            expr,
+            {"duration": 120},
+            expected_result=True,
+            test_name="complex_multi_duration_short_range",
+            skip_ytdlp=True,
+        )
+        self._test(
+            expr,
+            {"duration": 4000, "uploader": "BBC News"},
+            expected_result=True,
+            test_name="complex_multi_duration_long_bbc",
+            skip_ytdlp=True,
+        )
+        self._test(
+            expr,
+            {"duration": 4000, "uploader": "CNN"},
+            expected_result=False,
+            test_name="complex_multi_duration_long_cnn",
+            skip_ytdlp=True,
+        )
+        self._test(
+            expr,
+            {"duration": 1800},
+            expected_result=False,
+            test_name="complex_multi_duration_middle_range",
+            skip_ytdlp=True,
+        )
+
+    def test_string_operators(self):
+        d: dict[str, str] = {"uploader": "BBC News Channel"}
+
+        # Test all string operators with both implementations
+        self._test("uploader*='News'", d, expected_result=True, test_name="string_contains")
+        self._test("uploader^='BBC'", d, expected_result=True, test_name="string_startswith")
+        self._test("uploader$='Channel'", d, expected_result=True, test_name="string_endswith")
+        self._test("uploader~='News\\s+Channel'", d, expected_result=True, test_name="string_regex")
+
+        # Test negative cases
+        self._test("uploader*='CNN'", d, expected_result=False, test_name="string_contains_negative")
+        self._test("uploader^='CNN'", d, expected_result=False, test_name="string_startswith_negative")
+        self._test("uploader$='BBC'", d, expected_result=False, test_name="string_endswith_negative")
+
+    def test_spaces_around_operators(self):
+        """Test that spaces around operators are handled correctly."""
+        d: dict[str, str] = {"channel_id": "UC-7oMv6E4Uz2tF51w5Sj49w", "uploader": "BBC"}
+
+        # Test with spaces around equals
+        self._test("channel_id = 'UC-7oMv6E4Uz2tF51w5Sj49w'", d, expected_result=True, test_name="spaced_equals_match")
+        self._test("channel_id = 'different-id'", d, expected_result=False, test_name="spaced_equals_non_match")
+
+        # Test with spaces in complex expressions
+        self._test(
+            "channel_id = 'UC-7oMv6E4Uz2tF51w5Sj49w' & uploader = 'BBC'",
+            d,
+            expected_result=True,
+            test_name="complex_spaced_expression",
+        )
+        self._test(
+            "channel_id = 'different-id' & uploader = 'BBC'",
+            d,
+            expected_result=False,
+            test_name="complex_spaced_non_match",
+        )
+
+        # Test various operators with spaces
+        d_numeric: dict[str, int] = {"filesize": 2000000, "duration": 200}
+        self._test("filesize > 1000000", d_numeric, expected_result=True, test_name="spaced_greater_than")
+        self._test("filesize >= 2000000", d_numeric, expected_result=True, test_name="spaced_greater_equal")
+        self._test("duration < 300", d_numeric, expected_result=True, test_name="spaced_less_than")
+        self._test("duration <= 200", d_numeric, expected_result=True, test_name="spaced_less_equal")
+
+    def test_original_bug_reproduction(self):
+        """Test the exact case from the original bug report."""
+        # Exact data from the original bug report
+        test_data: dict[str, Any] = {
+            "age_limit": 0,
+            "comment_count": 6,
+            "channel_id": "UC-7oMv6E4Uz2tF51w5Sj49w",
+            "uploader_url": "https://www.youtube.com/@PlayFramePlus",
+        }
+
+        # This filter should return FALSE because:
+        # 1. channel_id doesn't match (UC-7oMv6E4Uz2tF51w5Sj49w vs UCfmrcEdes7yDtEISGPM1T-A)
+        # 2. availability key doesn't exist in the data
+        filter_expr = "channel_id = 'UCfmrcEdes7yDtEISGPM1T-A' & availability = subscriber_only"
+        self._test(filter_expr, test_data, expected_result=False, test_name="original_bug_full")
+
+        # Individual parts should also be false
+        self._test(
+            "channel_id = 'UCfmrcEdes7yDtEISGPM1T-A'",
+            test_data,
+            expected_result=False,
+            test_name="original_bug_wrong_channel",
+        )
+        self._test(
+            "availability = subscriber_only", test_data, expected_result=False, test_name="original_bug_missing_key"
+        )
+
+        # But the correct channel_id should match
+        self._test(
+            "channel_id = 'UC-7oMv6E4Uz2tF51w5Sj49w'",
+            test_data,
+            expected_result=True,
+            test_name="original_bug_correct_channel",
+        )
+
+    def test_or_operator_precedence(self):
+        """Test operator precedence and grouping with OR statements."""
+        # Test data for the examples
+        test_data: dict[str, int] = {
+            "age_limit": 0,
+            "fps": 120,
+            "like_count": 81,
+        }
+
+        # Case 1: (age_limit=0 & fps=120) || like_count=81
+        # This should evaluate as: (True & True) || True = True || True = True
+        expr1 = "(age_limit=0 & fps=120) || like_count=81"
+        self._test(expr1, test_data, expected_result=True, test_name="or_precedence_case1")
+
+        # Case 2: age_limit=0 & fps=120 || like_count=81
+        # This evaluates left-to-right as: (age_limit=0 & fps=120) || like_count=81
+        # = (True & True) || True = True || True = True
+        expr2 = "age_limit=0 & fps=120 || like_count=81"
+        self._test(expr2, test_data, expected_result=True, test_name="or_precedence_case2")
+
+        # Test with data that shows left-to-right evaluation
+        test_data_partial: dict[str, int] = {
+            "age_limit": 0,
+            "fps": 60,  # Changed from 120 to make first AND false
+            "like_count": 81,
+        }
+
+        # Case 1 with partial data: (age_limit=0 & fps=120) || like_count=81
+        # This should be: (True & False) || True = False || True = True
+        self._test(expr1, test_data_partial, expected_result=True, test_name="or_precedence_case1_partial")
+
+        # Case 2 with partial data: age_limit=0 & fps=120 || like_count=81
+        # This evaluates as: (age_limit=0 & fps=120) || like_count=81 = (True & False) || True = False || True = True
+        self._test(expr2, test_data_partial, expected_result=True, test_name="or_precedence_case2_partial")
+
+        # Test case where the difference becomes clear
+        test_data_edge: dict[str, int] = {
+            "age_limit": 1,  # Changed from 0 to make age_limit=0 false
+            "fps": 60,  # Changed from 120 to make fps=120 false
+            "like_count": 81,
+        }
+
+        # Case 1 with edge data: (age_limit=0 & fps=120) || like_count=81
+        # This should be: (False & False) || True = False || True = True
+        self._test(expr1, test_data_edge, expected_result=True, test_name="or_precedence_case1_edge")
+
+        # Case 2 with edge data: age_limit=0 & fps=120 || like_count=81
+        # This evaluates as: (age_limit=0 & fps=120) || like_count=81 = (False & False) || True = False || True = True
+        self._test(expr2, test_data_edge, expected_result=True, test_name="or_precedence_case2_edge")
+
+    def test_complex_or_precedence_scenarios(self):
+        """Test more complex OR precedence scenarios."""
+        # Test case where only the OR part is true
+        test_data_or_only: dict[str, int] = {
+            "age_limit": 1,  # False
+            "fps": 60,  # False (not 120)
+            "like_count": 81,  # True
+        }
+
+        # Expression: a & b || c
+        # Evaluates left-to-right as: (a & b) || c = (False & False) || True = False || True = True
+        expr = "age_limit=0 & fps=120 || like_count=81"
+        self._test(expr, test_data_or_only, expected_result=True, test_name="complex_or_only_or_true")
+
+        # Test case where only the AND part is true
+        test_data_and_only: dict[str, int] = {
+            "age_limit": 0,  # True
+            "fps": 120,  # True
+            "like_count": 50,  # False (not 81)
+        }
+
+        # Expression: a & b || c
+        # Evaluates as: (a & b) || c = (True & True) || False = True || False = True
+        self._test(expr, test_data_and_only, expected_result=True, test_name="complex_or_only_and_true")
+
+        # Test case where everything is false except the OR part
+        test_data_only_or: dict[str, int] = {
+            "age_limit": 1,  # False
+            "fps": 60,  # False
+            "like_count": 50,  # False
+            "view_count": 1000,  # True
+        }
+
+        # Test chained OR with AND: a & b || c || d
+        # Evaluates left-to-right as: ((a & b) || c) || d
+        expr_chain = "age_limit=0 & fps=120 || like_count=81 || view_count=1000"
+        self._test(expr_chain, test_data_only_or, expected_result=True, test_name="complex_or_chained")
+
+    def test_comprehensive_comparison(self):
+        """
+        Comprehensive test to ensure our implementation and yt-dlp's always agree
+        on a variety of test cases.
+        """
+        test_cases = [
+            # Simple cases - use numeric values to avoid yt-dlp unit parsing inconsistencies
+            ("filesize>1000000", {"filesize": 2000000}, True),  # 1MB = 1000000 bytes
+            ("filesize>1000000", {"filesize": 500000}, False),
+            ("duration<600", {"duration": 200}, True),  # 10min = 600 seconds
+            ("duration<600", {"duration": 800}, False),
+            # String operations
+            ("uploader*='BBC'", {"uploader": "BBC News"}, True),
+            ("uploader*='BBC'", {"uploader": "CNN News"}, False),
+            ("title^='How'", {"title": "How to code"}, True),
+            ("title^='How'", {"title": "Learn how"}, False),
+            # AND operations - use numeric values
+            ("filesize>1000000 & duration<600", {"filesize": 2000000, "duration": 200}, True),
+            ("filesize>1000000 & duration<600", {"filesize": 500000, "duration": 200}, False),
+            ("filesize>1000000 & duration<600", {"filesize": 2000000, "duration": 800}, False),
+            # Unary operations
+            ("duration", {"duration": 100}, True),
+            ("duration", {}, False),
+            ("!duration", {}, True),
+            ("!duration", {"duration": 100}, False),
+            # Complex expressions with parentheses and OR - use numeric values
+            ("(filesize>1000000 & duration<600) || uploader*='BBC'", {"filesize": 2000000, "duration": 200}, True),
+            ("(filesize>1000000 & duration<600) || uploader*='BBC'", {"uploader": "BBC News"}, True),
+            ("(filesize>1000000 & duration<600) || uploader*='BBC'", {"filesize": 500000, "uploader": "CNN"}, False),
+            # Edge cases with missing fields
+            ("missing_field=test", {"other_field": "value"}, False),
+            ("!missing_field", {"other_field": "value"}, True),
+        ]
+
+        for expr, test_data, expected in test_cases:
+            test_name = f"comprehensive_{expr.replace(' ', '_').replace('>', 'gt').replace('<', 'lt').replace('=', 'eq').replace('&', 'and').replace('||', 'or').replace('(', '').replace(')', '').replace('*', 'contains').replace('^', 'starts').replace('!', 'not')}"
+            self._test(expr, test_data, expected_result=expected, test_name=test_name)
+
+    def test_export_and_yt_dlp_compat(self):
+        from yt_dlp.utils import match_str
+
+        d: dict[str, str] = {"filesize": 2000000, "duration": 200, "uploader": "BBC"}
+        # Use numeric values to avoid yt-dlp unit parsing inconsistencies
+        expr = "(filesize>1000000 & duration<600) || uploader='BBC'"
+
+        parser = MiniFilter(expr)
+
+        for part in parser.export():
+            assert match_str(part, d), f"Failed to match {part} with {d}"
+
+
+if __name__ == "__main__":
+    unittest.main()

app/tests/test_ag_utils.py

@@ -0,0 +1,502 @@
+"""
+Tests for ag_utils.py functions.
+
+This test suite provides comprehensive coverage for all functions in ag_utils.py:
+- get_value: Tests callable detection and value retrieval
+- ag_set: Tests nested dictionary path setting with various scenarios
+- ag: Tests nested dictionary/list/object access with dot notation
+- ag_sets: Tests bulk setting of multiple paths
+- ag_exists: Tests existence checking for nested paths
+- ag_delete: Tests deletion of nested paths and keys
+
+Total test functions: 53
+All edge cases, error conditions, and normal operations are covered.
+"""
+
+from unittest.mock import MagicMock
+
+import pytest
+
+from app.library.ag_utils import (
+    ag,
+    ag_delete,
+    ag_exists,
+    ag_set,
+    ag_sets,
+    get_value,
+)
+
+
+class TestGetValue:
+    """Test the get_value function."""
+
+    def test_get_value_with_value(self):
+        """Test get_value returns the value when not callable."""
+        assert get_value(42) == 42
+        assert get_value("test") == "test"
+        assert get_value([1, 2, 3]) == [1, 2, 3]
+        assert get_value({"key": "value"}) == {"key": "value"}
+        assert get_value(None) is None
+
+    def test_get_value_with_callable(self):
+        """Test get_value calls the function when callable."""
+        mock_func = MagicMock(return_value="called")
+        result = get_value(mock_func)
+        assert result == "called"
+        mock_func.assert_called_once()
+
+    def test_get_value_with_lambda(self):
+        """Test get_value with lambda functions."""
+        assert get_value(lambda: 100) == 100
+        assert get_value(lambda: "lambda_result") == "lambda_result"
+
+    def test_get_value_with_function(self):
+        """Test get_value with regular functions."""
+
+        def test_func():
+            return "function_result"
+
+        assert get_value(test_func) == "function_result"
+
+
+class TestAgSet:
+    """Test the ag_set function."""
+
+    def test_ag_set_simple_path(self):
+        """Test setting a value with simple path."""
+        data = {}
+        result = ag_set(data, "key", "value")
+        assert result == {"key": "value"}
+        assert data == {"key": "value"}
+
+    def test_ag_set_nested_path(self):
+        """Test setting a value with nested path."""
+        data = {}
+        result = ag_set(data, "a.b.c", "nested_value")
+        expected = {"a": {"b": {"c": "nested_value"}}}
+        assert result == expected
+        assert data == expected
+
+    def test_ag_set_existing_structure(self):
+        """Test setting a value in existing structure."""
+        data = {"a": {"b": {"existing": "value"}}}
+        ag_set(data, "a.b.c", "new_value")
+        expected = {"a": {"b": {"existing": "value", "c": "new_value"}}}
+        assert data == expected
+
+    def test_ag_set_overwrite_existing(self):
+        """Test overwriting existing value."""
+        data = {"a": {"b": "old_value"}}
+        ag_set(data, "a.b", "new_value")
+        assert data == {"a": {"b": "new_value"}}
+
+    def test_ag_set_custom_separator(self):
+        """Test using custom separator."""
+        data = {}
+        ag_set(data, "a/b/c", "value", separator="/")
+        assert data == {"a": {"b": {"c": "value"}}}
+
+    def test_ag_set_overwrite_non_dict_intermediate(self):
+        """Test overwriting non-dict intermediate value with dict."""
+        data = {"a": "not_a_dict"}
+        ag_set(data, "a.b", "value")
+        # The function should overwrite "not_a_dict" with a dict containing the new path
+        expected = {"a": {"b": "value"}}
+        assert data == expected
+
+    def test_ag_set_error_on_non_dict_final(self):
+        """Test error when final target is not a dict."""
+        data = "not_a_dict"
+        with pytest.raises(RuntimeError, match="Cannot set value at path 'key'"):
+            ag_set(data, "key", "value")
+
+
+class TestAg:
+    """Test the ag function."""
+
+    def test_ag_with_none_path(self):
+        """Test ag returns whole structure when path is None."""
+        data = {"a": 1, "b": 2}
+        assert ag(data, None) == data
+        assert ag(data, "") == data
+
+    def test_ag_simple_dict_access(self):
+        """Test simple dictionary key access."""
+        data = {"x": 10, "y": 20}
+        assert ag(data, "x") == 10
+        assert ag(data, "y") == 20
+
+    def test_ag_missing_key_with_default(self):
+        """Test accessing missing key returns default."""
+        data = {"x": 10}
+        assert ag(data, "missing", default=0) == 0
+        assert ag(data, "missing", default="not_found") == "not_found"
+
+    def test_ag_nested_dict_access(self):
+        """Test nested dictionary access with dot notation."""
+        data = {"a": {"b": {"c": 42}}}
+        assert ag(data, "a.b.c") == 42
+
+    def test_ag_nested_missing_key(self):
+        """Test nested access with missing intermediate keys."""
+        data = {"a": {"b": 1}}
+        assert ag(data, "a.missing.c", default="default") == "default"
+        assert ag(data, "missing.b.c", default="default") == "default"
+
+    def test_ag_list_access_by_index(self):
+        """Test accessing list elements by index."""
+        data = [10, 20, 30]
+        assert ag(data, 0) == 10
+        assert ag(data, 1) == 20
+        assert ag(data, 2) == 30
+
+    def test_ag_list_access_out_of_bounds(self):
+        """Test list access with out of bounds index."""
+        data = [10, 20]
+        assert ag(data, 5, default="default") == "default"
+        assert ag(data, -3, default="default") == "default"  # -3 is out of bounds for 2-element list
+
+    def test_ag_list_negative_indices(self):
+        """Test list access with valid negative indices."""
+        data = [10, 20, 30]
+        assert ag(data, -1) == 30  # Last element
+        assert ag(data, -2) == 20  # Second to last
+        assert ag(data, -3) == 10  # First element
+
+    def test_ag_mixed_dict_list_access(self):
+        """Test accessing nested structure with dicts and lists."""
+        data = {"items": [{"name": "item1"}, {"name": "item2"}]}
+        assert ag(data, "items.0.name") == "item1"
+        assert ag(data, "items.1.name") == "item2"
+
+    def test_ag_list_of_paths(self):
+        """Test trying multiple paths and returning first found."""
+        data = {"a": 1, "b": 2}
+        assert ag(data, ["missing1", "missing2", "a"], default="default") == 1
+        assert ag(data, ["missing1", "b", "a"], default="default") == 2
+        assert ag(data, ["missing1", "missing2"], default="default") == "default"
+
+    def test_ag_custom_separator(self):
+        """Test using custom separator."""
+        data = {"a": {"b": {"c": 100}}}
+        assert ag(data, "a/b/c", separator="/") == 100
+
+    def test_ag_with_none_values(self):
+        """Test ag behavior with None values."""
+        data = {"a": None, "b": {"c": None}}
+        assert ag(data, "a", default="default") == "default"
+        assert ag(data, "b.c", default="default") == "default"
+
+    def test_ag_with_callable_default(self):
+        """Test ag with callable default value."""
+        data = {}
+        mock_default = MagicMock(return_value="called_default")
+        result = ag(data, "missing", default=mock_default)
+        assert result == "called_default"
+        mock_default.assert_called_once()
+
+    def test_ag_with_object_attributes(self):
+        """Test ag with object attributes using vars()."""
+
+        class TestObj:
+            def __init__(self):
+                self.attr1 = "value1"
+                self.attr2 = {"nested": "value2"}
+
+        obj = TestObj()
+        assert ag(obj, "attr1") == "value1"
+        assert ag(obj, "attr2.nested") == "value2"
+
+    def test_ag_with_non_dict_non_list_fallback(self):
+        """Test ag fallback for non-dict, non-list objects without vars."""
+
+        class NoVarsObj:
+            __slots__ = ["value"]
+
+            def __init__(self):
+                self.value = "test"
+
+        obj = NoVarsObj()
+        assert ag(obj, "anything", default="fallback") == "fallback"
+
+
+class TestAgSets:
+    """Test the ag_sets function."""
+
+    def test_ag_sets_multiple_paths(self):
+        """Test setting multiple paths at once."""
+        data = {}
+        path_values = {"a.b.c": "value1", "a.b.d": "value2", "x.y": "value3"}
+        result = ag_sets(data, path_values)
+
+        expected = {"a": {"b": {"c": "value1", "d": "value2"}}, "x": {"y": "value3"}}
+        assert result == expected
+        assert data == expected
+
+    def test_ag_sets_custom_separator(self):
+        """Test ag_sets with custom separator."""
+        data = {}
+        path_values = {"a/b/c": "value1", "x/y": "value2"}
+        ag_sets(data, path_values, separator="/")
+
+        expected = {"a": {"b": {"c": "value1"}}, "x": {"y": "value2"}}
+        assert data == expected
+
+    def test_ag_sets_existing_structure(self):
+        """Test ag_sets with existing data structure."""
+        data = {"a": {"existing": "value"}}
+        path_values = {"a.b.c": "new_value", "d": "another_value"}
+        ag_sets(data, path_values)
+
+        expected = {"a": {"existing": "value", "b": {"c": "new_value"}}, "d": "another_value"}
+        assert data == expected
+
+    def test_ag_sets_empty_dict(self):
+        """Test ag_sets with empty path_values dict."""
+        data = {"existing": "data"}
+        original = data.copy()
+        ag_sets(data, {})
+        assert data == original
+
+
+class TestAgExists:
+    """Test the ag_exists function."""
+
+    def test_ag_exists_simple_dict_key(self):
+        """Test checking existence of simple dict keys."""
+        data = {"a": "value", "b": None, "c": 0}
+        assert ag_exists(data, "a") is True
+        assert ag_exists(data, "b") is False  # None values return False
+        assert ag_exists(data, "c") is True  # 0 is not None
+        assert ag_exists(data, "missing") is False
+
+    def test_ag_exists_nested_path(self):
+        """Test checking existence of nested paths."""
+        data = {"a": {"b": {"c": "value", "d": None}}}
+        assert ag_exists(data, "a.b.c") is True
+        assert ag_exists(data, "a.b.d") is False  # None value
+        assert ag_exists(data, "a.b.missing") is False
+        assert ag_exists(data, "a.missing.c") is False
+
+    def test_ag_exists_list_indices(self):
+        """Test checking existence of list indices."""
+        data = [10, None, 30]
+        assert ag_exists(data, 0) is True
+        assert ag_exists(data, 1) is False  # None value
+        assert ag_exists(data, 2) is True
+        assert ag_exists(data, 5) is False  # Out of bounds
+
+    def test_ag_exists_mixed_structure(self):
+        """Test checking existence in mixed dict/list structure."""
+        data = {"items": [{"name": "item1"}, None, {"name": "item3"}]}
+        assert ag_exists(data, "items.0.name") is True
+        assert ag_exists(data, "items.1.name") is False  # items[1] is None
+        assert ag_exists(data, "items.2.name") is True
+        assert ag_exists(data, "items.5.name") is False  # Out of bounds
+
+    def test_ag_exists_custom_separator(self):
+        """Test ag_exists with custom separator."""
+        data = {"a": {"b": {"c": "value"}}}
+        assert ag_exists(data, "a/b/c", separator="/") is True
+        assert ag_exists(data, "a/b/missing", separator="/") is False
+
+    def test_ag_exists_with_object(self):
+        """Test ag_exists with object using vars()."""
+
+        class TestObj:
+            def __init__(self):
+                self.attr = "value"
+                self.nested = {"key": "value"}
+
+        obj = TestObj()
+        assert ag_exists(obj, "attr") is True
+        assert ag_exists(obj, "nested.key") is True
+        assert ag_exists(obj, "missing") is False
+
+    def test_ag_exists_with_non_vars_object(self):
+        """Test ag_exists with object that doesn't support vars()."""
+
+        class NoVarsObj:
+            __slots__ = []
+
+        obj = NoVarsObj()
+        assert ag_exists(obj, "anything") is False
+
+
+class TestAgDelete:
+    """Test the ag_delete function."""
+
+    def test_ag_delete_simple_dict_key(self):
+        """Test deleting simple dictionary keys."""
+        data = {"a": 1, "b": 2, "c": 3}
+        result = ag_delete(data, "b")
+        assert result == {"a": 1, "c": 3}
+        assert data == {"a": 1, "c": 3}
+
+    def test_ag_delete_nested_path(self):
+        """Test deleting nested dictionary paths."""
+        data = {"a": {"b": {"c": 1, "d": 2}, "e": 3}}
+        ag_delete(data, "a.b.c")
+        expected = {"a": {"b": {"d": 2}, "e": 3}}
+        assert data == expected
+
+    def test_ag_delete_list_index(self):
+        """Test deleting list elements by index."""
+        data = [10, 20, 30, 40]
+        ag_delete(data, 1)
+        assert data == [10, 30, 40]
+
+    def test_ag_delete_mixed_structure(self):
+        """Test deleting from mixed dict/list structure."""
+        data = {"items": [{"name": "item1"}, {"name": "item2", "value": 100}]}
+        ag_delete(data, "items.1.value")
+        expected = {"items": [{"name": "item1"}, {"name": "item2"}]}
+        assert data == expected
+
+    def test_ag_delete_multiple_paths(self):
+        """Test deleting multiple paths at once."""
+        data = {"a": {"b": 1, "c": 2}, "d": 3, "e": 4}
+        ag_delete(data, ["a.b", "d"])
+        expected = {"a": {"c": 2}, "e": 4}
+        assert data == expected
+
+    def test_ag_delete_custom_separator(self):
+        """Test ag_delete with custom separator."""
+        data = {"a": {"b": {"c": 1}}}
+        ag_delete(data, "a/b/c", separator="/")
+        assert data == {"a": {"b": {}}}
+
+    def test_ag_delete_missing_key(self):
+        """Test deleting non-existent keys (should not raise error)."""
+        data = {"a": {"b": 1}}
+        original = {"a": {"b": 1}}
+
+        # Should not raise error and not modify data
+        ag_delete(data, "missing")
+        ag_delete(data, "a.missing")
+        ag_delete(data, "a.b.c")
+
+        assert data == original
+
+    def test_ag_delete_out_of_bounds_list(self):
+        """Test deleting out of bounds list index (should not raise error)."""
+        data = [1, 2, 3]
+        original = [1, 2, 3]
+
+        ag_delete(data, 10)  # Out of bounds
+        ag_delete(data, -1)  # Negative index
+
+        assert data == original
+
+    def test_ag_delete_with_object(self):
+        """Test ag_delete with object using vars()."""
+
+        class TestObj:
+            def __init__(self):
+                self.attr1 = "value1"
+                self.attr2 = {"nested": "value2"}
+
+        obj = TestObj()
+        ag_delete(obj, "attr1")
+
+        # Check that attr1 was deleted
+        assert not hasattr(obj, "attr1")
+        assert hasattr(obj, "attr2")
+
+    def test_ag_delete_invalid_list_string_index(self):
+        """Test ag_delete with invalid string index for list."""
+        data = {"items": [1, 2, 3]}
+        original_items = [1, 2, 3]
+
+        ag_delete(data, "items.invalid_index")
+
+        # Should not modify the list
+        assert data["items"] == original_items
+
+    def test_ag_delete_path_through_none(self):
+        """Test ag_delete when path goes through None value."""
+        data = {"a": {"b": None}}
+        original = {"a": {"b": None}}
+
+        ag_delete(data, "a.b.c")  # Can't traverse through None
+
+        assert data == original
+
+
+class TestEdgeCases:
+    """Test edge cases and error conditions."""
+
+    def test_empty_data_structures(self):
+        """Test functions with empty data structures."""
+        empty_dict = {}
+        empty_list = []
+
+        # ag function
+        assert ag(empty_dict, "key", default="default") == "default"
+        assert ag(empty_list, 0, default="default") == "default"
+
+        # ag_exists function
+        assert ag_exists(empty_dict, "key") is False
+        assert ag_exists(empty_list, 0) is False
+
+        # ag_delete function (should not raise errors)
+        ag_delete(empty_dict, "key")
+        ag_delete(empty_list, 0)
+
+        assert empty_dict == {}
+        assert empty_list == []
+
+    def test_deeply_nested_structures(self):
+        """Test with deeply nested structures."""
+        # Create 10-level deep structure
+        data = {}
+        current = data
+        for i in range(10):
+            current[f"level{i}"] = {}
+            current = current[f"level{i}"]
+        current["value"] = "deep_value"
+
+        path = ".".join(f"level{i}" for i in range(10)) + ".value"
+
+        # Test ag function
+        assert ag(data, path) == "deep_value"
+
+        # Test ag_exists function
+        assert ag_exists(data, path) is True
+
+        # Test ag_set function
+        ag_set(data, path.replace(".value", ".new_value"), "new_deep_value")
+        new_path = ".".join(f"level{i}" for i in range(10)) + ".new_value"
+        assert ag(data, new_path) == "new_deep_value"
+
+    def test_special_characters_in_keys(self):
+        """Test with special characters in dictionary keys."""
+        data = {"key with spaces": "value1", "key.with.dots": "value2", "key/with/slashes": "value3"}
+
+        # These should work with direct key access
+        assert ag(data, "key with spaces") == "value1"
+        assert ag(data, "key.with.dots") == "value2"
+        assert ag(data, "key/with/slashes") == "value3"
+
+        # Test existence
+        assert ag_exists(data, "key with spaces") is True
+        assert ag_exists(data, "key.with.dots") is True
+
+        # Test deletion
+        ag_delete(data, "key with spaces")
+        assert "key with spaces" not in data
+
+    def test_type_consistency(self):
+        """Test type consistency across operations."""
+        data = {"string": "test", "number": 42, "boolean": True, "list": [1, 2, 3], "dict": {"nested": "value"}}
+
+        # All values should be retrieved correctly
+        assert ag(data, "string") == "test"
+        assert ag(data, "number") == 42
+        assert ag(data, "boolean") is True
+        assert ag(data, "list") == [1, 2, 3]
+        assert ag(data, "dict") == {"nested": "value"}
+
+        # All should exist
+        for key in data:
+            assert ag_exists(data, key) is True

app/tests/test_cache.py

@@ -0,0 +1,260 @@
+"""
+Tests for cache.py - Thread-safe caching utilities.
+
+This test suite provides comprehensive coverage for the Cache class:
+- Tests basic cache operations (set, get, delete, clear)
+- Tests TTL (time-to-live) functionality
+- Tests thread safety
+- Tests cache expiration
+- Tests default value handling
+- Tests key existence checking
+- Tests hash generation
+- Tests async methods
+
+Total test functions: 15
+All cache operations and edge cases are covered.
+"""
+
+import asyncio
+import threading
+import time
+
+import pytest
+
+from app.library.cache import Cache
+
+
+class TestCache:
+    """Test the Cache class."""
+
+    def setup_method(self):
+        """Set up test fixtures."""
+        # Clear any existing cache instance
+        if hasattr(Cache, "_instances"):
+            Cache._instances.clear()
+        self.cache = Cache()
+
+    def test_singleton_behavior(self):
+        """Test that Cache follows singleton pattern."""
+        cache1 = Cache()
+        cache2 = Cache()
+        assert cache1 is cache2
+
+    def test_basic_set_and_get(self):
+        """Test basic cache set and get operations."""
+        self.cache.set("key1", "value1")
+        assert self.cache.get("key1") == "value1"
+
+    def test_get_with_default(self):
+        """Test get with default value for non-existent keys."""
+        assert self.cache.get("nonexistent", "default") == "default"
+        assert self.cache.get("nonexistent") is None
+
+    def test_set_with_ttl(self):
+        """Test setting values with TTL."""
+        self.cache.set("temp_key", "temp_value", ttl=0.1)
+        assert self.cache.get("temp_key") == "temp_value"
+
+        # Wait for expiration
+        time.sleep(0.2)
+        assert self.cache.get("temp_key") is None
+
+    def test_set_without_ttl(self):
+        """Test setting values without TTL (permanent)."""
+        self.cache.set("permanent_key", "permanent_value")
+        assert self.cache.get("permanent_key") == "permanent_value"
+
+        # Should still be there after some time
+        time.sleep(0.1)
+        assert self.cache.get("permanent_key") == "permanent_value"
+
+    def test_has_key(self):
+        """Test key existence checking."""
+        assert not self.cache.has("nonexistent")
+
+        self.cache.set("existing", "value")
+        assert self.cache.has("existing")
+
+    def test_has_key_with_expiration(self):
+        """Test key existence with expired keys."""
+        self.cache.set("expiring", "value", ttl=0.1)
+        assert self.cache.has("expiring")
+
+        time.sleep(0.2)
+        assert not self.cache.has("expiring")
+
+    def test_ttl_method(self):
+        """Test TTL retrieval."""
+        # Key without TTL
+        self.cache.set("permanent", "value")
+        assert self.cache.ttl("permanent") is None
+
+        # Key with TTL
+        self.cache.set("temporary", "value", ttl=1.0)
+        ttl = self.cache.ttl("temporary")
+        assert ttl is not None
+        assert 0.5 < ttl <= 1.0
+
+        # Non-existent key
+        assert self.cache.ttl("nonexistent") is None
+
+    def test_delete_key(self):
+        """Test key deletion."""
+        self.cache.set("to_delete", "value")
+        assert self.cache.get("to_delete") == "value"
+
+        self.cache.delete("to_delete")
+        assert self.cache.get("to_delete") is None
+
+    def test_delete_nonexistent_key(self):
+        """Test deleting non-existent key (should not raise error)."""
+        self.cache.delete("nonexistent")  # Should not raise
+
+    def test_clear_cache(self):
+        """Test clearing all cache entries."""
+        self.cache.set("key1", "value1")
+        self.cache.set("key2", "value2")
+
+        self.cache.clear()
+
+        assert self.cache.get("key1") is None
+        assert self.cache.get("key2") is None
+
+    def test_hash_method(self):
+        """Test hash generation."""
+        hash1 = self.cache.hash("test_string")
+        hash2 = self.cache.hash("test_string")
+        hash3 = self.cache.hash("different_string")
+
+        # Same input should produce same hash
+        assert hash1 == hash2
+
+        # Different input should produce different hash
+        assert hash1 != hash3
+
+        # Should be valid SHA-256 hex string
+        assert len(hash1) == 64
+        assert all(c in "0123456789abcdef" for c in hash1)
+
+    def test_thread_safety(self):
+        """Test thread safety of cache operations."""
+        results = []
+        errors = []
+
+        def worker(worker_id):
+            try:
+                for i in range(10):
+                    key = f"worker_{worker_id}_key_{i}"
+                    value = f"worker_{worker_id}_value_{i}"
+
+                    self.cache.set(key, value)
+                    retrieved = self.cache.get(key)
+
+                    if retrieved == value:
+                        results.append(f"{worker_id}_{i}_success")
+                    else:
+                        errors.append(f"{worker_id}_{i}_mismatch: {retrieved} != {value}")
+            except Exception as e:
+                errors.append(f"Worker {worker_id} error: {e}")
+
+        # Create multiple threads
+        threads = []
+        for i in range(5):
+            thread = threading.Thread(target=worker, args=(i,))
+            threads.append(thread)
+            thread.start()
+
+        # Wait for all threads to complete
+        for thread in threads:
+            thread.join()
+
+        # Check results
+        assert len(errors) == 0, f"Thread safety errors: {errors}"
+        assert len(results) == 50  # 5 workers * 10 operations each
+
+    def test_async_set(self):
+        """Test async set method using asyncio.run."""
+        async def async_test():
+            await self.cache.aset("async_key", "async_value")
+            assert self.cache.get("async_key") == "async_value"
+
+        asyncio.run(async_test())
+
+    def test_async_set_with_ttl(self):
+        """Test async set with TTL using asyncio.run."""
+        async def async_test():
+            await self.cache.aset("async_temp", "async_value", ttl=0.1)
+            assert self.cache.get("async_temp") == "async_value"
+
+            await asyncio.sleep(0.2)
+            assert self.cache.get("async_temp") is None
+
+        asyncio.run(async_test())
+
+        asyncio.run(async_test())
+
+    def test_expired_key_cleanup_on_get(self):
+        """Test that expired keys are cleaned up when accessed."""
+        # Set a key with very short TTL
+        self.cache.set("cleanup_test", "value", ttl=0.05)
+
+        # Verify it's initially there
+        assert self.cache.get("cleanup_test") == "value"
+
+        # Wait for expiration
+        time.sleep(0.1)
+
+        # Getting expired key should clean it up and return None
+        assert self.cache.get("cleanup_test") is None
+
+        # Key should be removed from internal cache
+        assert "cleanup_test" not in self.cache._cache
+
+    def test_expired_key_cleanup_on_has(self):
+        """Test that expired keys are cleaned up when checking existence."""
+        # Set a key with very short TTL
+        self.cache.set("has_cleanup", "value", ttl=0.05)
+
+        # Verify it's initially there
+        assert self.cache.has("has_cleanup")
+
+        # Wait for expiration
+        time.sleep(0.1)
+
+        # Checking existence of expired key should clean it up
+        assert not self.cache.has("has_cleanup")
+
+        # Key should be removed from internal cache
+        assert "has_cleanup" not in self.cache._cache
+
+    def test_complex_data_types(self):
+        """Test caching of complex data types."""
+        # Test list
+        test_list = [1, 2, {"nested": "dict"}]
+        self.cache.set("list_key", test_list)
+        assert self.cache.get("list_key") == test_list
+
+        # Test dict
+        test_dict = {"key": "value", "nested": {"list": [1, 2, 3]}}
+        self.cache.set("dict_key", test_dict)
+        assert self.cache.get("dict_key") == test_dict
+
+        # Test custom object
+        class CustomObject:
+            def __init__(self, value):
+                self.value = value
+
+            def __eq__(self, other):
+                return isinstance(other, CustomObject) and self.value == other.value
+
+            def __hash__(self):
+                return hash(self.value)
+
+        custom_obj = CustomObject("test_value")
+        self.cache.set("object_key", custom_obj)
+        retrieved = self.cache.get("object_key")
+        assert retrieved == custom_obj
+
+
+if __name__ == "__main__":
+    pytest.main([__file__])

app/tests/test_conditions.py

@@ -0,0 +1,751 @@
+"""
+Tests for conditions.py - Download conditions management.
+
+This test suite provides comprehensive coverage for the conditions module:
+- Tests Condition dataclass functionality
+- Tests Conditions singleton class behavior
+- Tests condition loading, saving, and validation
+- Tests condition matching against info dicts
+- Tests error handling and edge cases
+
+Total test functions: 15+
+All condition management functionality and edge cases are covered.
+"""
+
+import json
+import tempfile
+import uuid
+from pathlib import Path
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from app.library.conditions import Condition, Conditions
+from app.library.Singleton import Singleton
+
+
+class TestCondition:
+    """Test the Condition dataclass."""
+
+    def test_condition_creation_with_defaults(self):
+        """Test creating a condition with default values."""
+        condition = Condition(name="test", filter="duration > 60")
+
+        # Check that ID is generated
+        assert condition.id
+        assert isinstance(condition.id, str)
+
+        # Check required fields
+        assert condition.name == "test"
+        assert condition.filter == "duration > 60"
+
+        # Check defaults
+        assert condition.cli == ""
+        assert condition.extras == {}
+
+    def test_condition_creation_with_all_fields(self):
+        """Test creating a condition with all fields specified."""
+        test_id = str(uuid.uuid4())
+        extras = {"key": "value", "number": 42}
+
+        condition = Condition(
+            id=test_id,
+            name="full_test",
+            filter="uploader = 'test'",
+            cli="--format best",
+            extras=extras
+        )
+
+        assert condition.id == test_id
+        assert condition.name == "full_test"
+        assert condition.filter == "uploader = 'test'"
+        assert condition.cli == "--format best"
+        assert condition.extras == extras
+
+    def test_condition_serialize(self):
+        """Test condition serialization to dict."""
+        condition = Condition(
+            name="serialize_test",
+            filter="title ~= 'test'",
+            cli="--audio-quality 0",
+            extras={"tag": "music"}
+        )
+
+        serialized = condition.serialize()
+
+        assert isinstance(serialized, dict)
+        assert serialized["name"] == "serialize_test"
+        assert serialized["filter"] == "title ~= 'test'"
+        assert serialized["cli"] == "--audio-quality 0"
+        assert serialized["extras"] == {"tag": "music"}
+        assert "id" in serialized
+
+    def test_condition_json(self):
+        """Test condition JSON serialization."""
+        condition = Condition(name="json_test", filter="duration < 300")
+
+        json_str = condition.json()
+
+        assert isinstance(json_str, str)
+        # Should be valid JSON
+        data = json.loads(json_str)
+        assert data["name"] == "json_test"
+        assert data["filter"] == "duration < 300"
+
+    def test_condition_get_method(self):
+        """Test condition get method for accessing fields."""
+        condition = Condition(
+            name="get_test",
+            filter="view_count > 1000",
+            extras={"category": "popular"}
+        )
+
+        assert condition.get("name") == "get_test"
+        assert condition.get("filter") == "view_count > 1000"
+        assert condition.get("extras") == {"category": "popular"}
+        assert condition.get("nonexistent") is None
+        assert condition.get("nonexistent", "default") == "default"
+
+
+class TestConditions:
+    """Test the Conditions singleton class."""
+
+    def setup_method(self):
+        """Set up test fixtures by clearing singleton instances."""
+        # Clear singleton instances before each test
+        Singleton._instances.clear()
+        # Reset class variable
+        Conditions._items = []
+        Conditions._instance = None
+
+    def test_conditions_singleton(self):
+        """Test that Conditions follows singleton pattern."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "test_conditions.json"
+
+            instance1 = Conditions(file=file_path)
+            instance2 = Conditions.get_instance()
+
+            assert instance1 is instance2
+
+    def test_conditions_initialization(self):
+        """Test Conditions initialization with file path."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "test_conditions.json"
+
+            conditions = Conditions(file=file_path)
+
+            assert conditions._file == file_path
+            assert isinstance(conditions._items, list)
+
+    @patch("app.library.conditions.Config.get_instance")
+    def test_conditions_default_file_path(self, mock_config):
+        """Test Conditions uses default config path when no file specified."""
+        mock_config_instance = MagicMock()
+        mock_config_instance.config_path = "/test/config"
+        mock_config.return_value = mock_config_instance
+
+        conditions = Conditions()
+
+        expected_path = Path("/test/config") / "conditions.json"
+        assert conditions._file == expected_path
+
+    def test_get_all_empty(self):
+        """Test get_all returns empty list when no conditions loaded."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "empty_conditions.json"
+            conditions = Conditions(file=file_path)
+
+            result = conditions.get_all()
+
+            assert isinstance(result, list)
+            assert len(result) == 0
+
+    def test_clear(self):
+        """Test clearing all conditions."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "clear_test.json"
+            conditions = Conditions(file=file_path)
+
+            # Add some test conditions
+            conditions._items = [
+                Condition(name="test1", filter="duration > 60"),
+                Condition(name="test2", filter="uploader = 'test'")
+            ]
+
+            result = conditions.clear()
+
+            assert result is conditions  # Should return self
+            assert len(conditions._items) == 0
+
+    def test_clear_when_already_empty(self):
+        """Test clearing when conditions list is already empty."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "already_empty.json"
+            conditions = Conditions(file=file_path)
+
+            result = conditions.clear()
+
+            assert result is conditions
+            assert len(conditions._items) == 0
+
+    def test_load_nonexistent_file(self):
+        """Test loading from non-existent file."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "nonexistent.json"
+            conditions = Conditions(file=file_path)
+
+            result = conditions.load()
+
+            assert result is conditions
+            assert len(conditions._items) == 0
+
+    def test_load_empty_file(self):
+        """Test loading from empty file."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "empty.json"
+            file_path.touch()  # Create empty file
+
+            conditions = Conditions(file=file_path)
+            result = conditions.load()
+
+            assert result is conditions
+            assert len(conditions._items) == 0
+
+    def test_load_valid_conditions(self):
+        """Test loading valid conditions from file."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "valid_conditions.json"
+
+            # Create test data
+            test_data = [
+                {
+                    "id": str(uuid.uuid4()),
+                    "name": "short_videos",
+                    "filter": "duration < 300",
+                    "cli": "--format worst",
+                    "extras": {"category": "short"}
+                },
+                {
+                    "id": str(uuid.uuid4()),
+                    "name": "music_videos",
+                    "filter": "title ~= 'music'",
+                    "cli": "--audio-quality 0",
+                    "extras": {"type": "audio"}
+                }
+            ]
+
+            file_path.write_text(json.dumps(test_data, indent=4))
+
+            conditions = Conditions(file=file_path)
+            result = conditions.load()
+
+            assert result is conditions
+            assert len(conditions._items) == 2
+
+            # Check first condition
+            assert conditions._items[0].name == "short_videos"
+            assert conditions._items[0].filter == "duration < 300"
+            assert conditions._items[0].cli == "--format worst"
+            assert conditions._items[0].extras == {"category": "short"}
+
+            # Check second condition
+            assert conditions._items[1].name == "music_videos"
+            assert conditions._items[1].filter == "title ~= 'music'"
+
+    def test_load_conditions_without_id(self):
+        """Test loading conditions that don't have ID (should generate ID)."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "no_id_conditions.json"
+
+            # Create test data without ID
+            test_data = [
+                {
+                    "name": "no_id_test",
+                    "filter": "duration > 120"
+                }
+            ]
+
+            file_path.write_text(json.dumps(test_data))
+
+            with patch.object(Conditions, "save") as mock_save:
+                conditions = Conditions(file=file_path)
+                conditions.load()
+
+                # Should have generated ID
+                assert len(conditions._items) == 1
+                assert conditions._items[0].id
+                assert conditions._items[0].name == "no_id_test"
+
+                # Should call save due to changes
+                mock_save.assert_called_once()
+
+    def test_load_conditions_without_extras(self):
+        """Test loading conditions that don't have extras field."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "no_extras_conditions.json"
+
+            test_data = [
+                {
+                    "id": str(uuid.uuid4()),
+                    "name": "no_extras_test",
+                    "filter": "uploader = 'test'"
+                }
+            ]
+
+            file_path.write_text(json.dumps(test_data))
+
+            with patch.object(Conditions, "save") as mock_save:
+                conditions = Conditions(file=file_path)
+                conditions.load()
+
+                # Should have generated empty extras
+                assert len(conditions._items) == 1
+                assert conditions._items[0].extras == {}
+
+                # Should call save due to changes
+                mock_save.assert_called_once()
+
+    def test_load_invalid_json(self):
+        """Test loading file with invalid JSON."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "invalid.json"
+            file_path.write_text("invalid json content")
+
+            conditions = Conditions(file=file_path)
+            result = conditions.load()
+
+            assert result is conditions
+            assert len(conditions._items) == 0
+
+    def test_load_invalid_condition_data(self):
+        """Test loading file with invalid condition data."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "invalid_data.json"
+
+            # Missing required fields
+            test_data = [
+                {"id": "valid", "name": "valid", "filter": "duration > 60"},
+                {"invalid": "data"}  # Missing required fields
+            ]
+
+            file_path.write_text(json.dumps(test_data))
+
+            conditions = Conditions(file=file_path)
+            result = conditions.load()
+
+            # Should load only valid conditions
+            assert result is conditions
+            assert len(conditions._items) == 1
+            assert conditions._items[0].name == "valid"
+
+    def test_validate_valid_condition_dict(self):
+        """Test validating a valid condition dictionary."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "validate_test.json"
+            conditions = Conditions(file=file_path)
+
+            valid_condition = {
+                "id": str(uuid.uuid4()),
+                "name": "valid_test",
+                "filter": "duration > 60",
+                "cli": "--format best",
+                "extras": {"key": "value"}
+            }
+
+            result = conditions.validate(valid_condition)
+            assert result is True
+
+    def test_validate_valid_condition_object(self):
+        """Test validating a valid Condition object."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "validate_obj_test.json"
+            conditions = Conditions(file=file_path)
+
+            valid_condition = Condition(
+                name="valid_obj_test",
+                filter="uploader = 'test'"
+            )
+
+            result = conditions.validate(valid_condition)
+            assert result is True
+
+    def test_validate_missing_id(self):
+        """Test validating condition without ID."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "no_id_validate.json"
+            conditions = Conditions(file=file_path)
+
+            invalid_condition = {
+                "name": "no_id_test",
+                "filter": "duration > 60"
+            }
+
+            with pytest.raises(ValueError, match="No id found"):
+                conditions.validate(invalid_condition)
+
+    def test_validate_missing_name(self):
+        """Test validating condition without name."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "no_name_validate.json"
+            conditions = Conditions(file=file_path)
+
+            invalid_condition = {
+                "id": str(uuid.uuid4()),
+                "filter": "duration > 60"
+            }
+
+            with pytest.raises(ValueError, match="No name found"):
+                conditions.validate(invalid_condition)
+
+    def test_validate_missing_filter(self):
+        """Test validating condition without filter."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "no_filter_validate.json"
+            conditions = Conditions(file=file_path)
+
+            invalid_condition = {
+                "id": str(uuid.uuid4()),
+                "name": "no_filter_test"
+            }
+
+            with pytest.raises(ValueError, match="No filter found"):
+                conditions.validate(invalid_condition)
+
+    def test_validate_invalid_filter(self):
+        """Test validating condition with invalid filter syntax."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "invalid_filter.json"
+            conditions = Conditions(file=file_path)
+
+            # Use a filter that will cause a syntax error in the parser
+            invalid_condition = {
+                "id": str(uuid.uuid4()),
+                "name": "invalid_filter_test",
+                "filter": "duration > & < 60",  # Invalid syntax with consecutive operators
+                "cli": "",
+                "extras": {}
+            }
+
+            with pytest.raises(ValueError, match="Invalid filter"):
+                conditions.validate(invalid_condition)
+
+    def test_validate_invalid_cli(self):
+        """Test validating condition with invalid CLI options."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "invalid_cli.json"
+            conditions = Conditions(file=file_path)
+
+            invalid_condition = {
+                "id": str(uuid.uuid4()),
+                "name": "invalid_cli_test",
+                "filter": "duration > 60",
+                "cli": "--invalid-option-that-does-not-exist"
+            }
+
+            with pytest.raises(ValueError, match="Invalid command options"):
+                conditions.validate(invalid_condition)
+
+    def test_validate_invalid_extras_type(self):
+        """Test validating condition with non-dict extras."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "invalid_extras.json"
+            conditions = Conditions(file=file_path)
+
+            invalid_condition = {
+                "id": str(uuid.uuid4()),
+                "name": "invalid_extras_test",
+                "filter": "duration > 60",
+                "extras": "not a dict"
+            }
+
+            with pytest.raises(ValueError, match="Extras must be a dictionary"):
+                conditions.validate(invalid_condition)
+
+    def test_validate_invalid_item_type(self):
+        """Test validating invalid item type."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "invalid_type.json"
+            conditions = Conditions(file=file_path)
+
+            with pytest.raises(ValueError, match=r"Unexpected.*item type"):
+                conditions.validate("invalid type")
+
+    def test_save_conditions(self):
+        """Test saving conditions to file."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "save_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_conditions = [
+                Condition(name="save_test1", filter="duration > 60"),
+                Condition(name="save_test2", filter="uploader = 'test'")
+            ]
+
+            result = conditions.save(test_conditions)
+
+            assert result is conditions
+            assert file_path.exists()
+
+            # Verify file content
+            saved_data = json.loads(file_path.read_text())
+            assert len(saved_data) == 2
+            assert saved_data[0]["name"] == "save_test1"
+            assert saved_data[1]["name"] == "save_test2"
+
+    def test_save_conditions_dict_format(self):
+        """Test saving conditions in dictionary format."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "save_dict_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_conditions = [
+                {
+                    "id": str(uuid.uuid4()),
+                    "name": "dict_test",
+                    "filter": "duration < 300",
+                    "cli": "",
+                    "extras": {}
+                }
+            ]
+
+            conditions.save(test_conditions)
+
+            assert file_path.exists()
+            saved_data = json.loads(file_path.read_text())
+            assert len(saved_data) == 1
+            assert saved_data[0]["name"] == "dict_test"
+
+    def test_has_condition_by_id(self):
+        """Test checking if condition exists by ID."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "has_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_id = str(uuid.uuid4())
+            test_condition = Condition(id=test_id, name="has_test", filter="duration > 60")
+            conditions._items = [test_condition]
+
+            assert conditions.has(test_id) is True
+            assert conditions.has("nonexistent") is False
+
+    def test_has_condition_by_name(self):
+        """Test checking if condition exists by name."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "has_name_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="has_name_test", filter="uploader = 'test'")
+            conditions._items = [test_condition]
+
+            assert conditions.has("has_name_test") is True
+            assert conditions.has("nonexistent_name") is False
+
+    def test_get_condition_by_id(self):
+        """Test getting condition by ID."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "get_id_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_id = str(uuid.uuid4())
+            test_condition = Condition(id=test_id, name="get_id_test", filter="duration > 120")
+            conditions._items = [test_condition]
+
+            result = conditions.get(test_id)
+            assert result is test_condition
+
+            assert conditions.get("nonexistent") is None
+
+    def test_get_condition_by_name(self):
+        """Test getting condition by name."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "get_name_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="get_name_test", filter="title ~= 'music'")
+            conditions._items = [test_condition]
+
+            result = conditions.get("get_name_test")
+            assert result is test_condition
+
+    def test_get_condition_empty_id_or_name(self):
+        """Test getting condition with empty ID or name."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "empty_get_test.json"
+            conditions = Conditions(file=file_path)
+
+            assert conditions.get("") is None
+            assert conditions.get(None) is None
+
+    @patch("app.library.conditions.match_str")
+    def test_match_condition_found(self, mock_match_str):
+        """Test matching condition against info dict."""
+        mock_match_str.return_value = True
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "match_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="match_test", filter="duration > 60")
+            conditions._items = [test_condition]
+
+            info_dict = {"duration": 120, "title": "Test Video"}
+            result = conditions.match(info_dict)
+
+            assert result is test_condition
+            mock_match_str.assert_called_once_with("duration > 60", info_dict)
+
+    @patch("app.library.conditions.match_str")
+    def test_match_condition_not_found(self, mock_match_str):
+        """Test matching when no condition matches."""
+        mock_match_str.return_value = False
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "no_match_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="no_match_test", filter="duration > 300")
+            conditions._items = [test_condition]
+
+            info_dict = {"duration": 60, "title": "Short Video"}
+            result = conditions.match(info_dict)
+
+            assert result is None
+
+    def test_match_empty_conditions(self):
+        """Test matching with empty conditions list."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "empty_match_test.json"
+            conditions = Conditions(file=file_path)
+
+            info_dict = {"duration": 120}
+            result = conditions.match(info_dict)
+
+            assert result is None
+
+    def test_match_invalid_info_dict(self):
+        """Test matching with invalid info dict."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "invalid_info_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="test", filter="duration > 60")
+            conditions._items = [test_condition]
+
+            # Test with None
+            assert conditions.match(None) is None
+
+            # Test with empty dict
+            assert conditions.match({}) is None
+
+            # Test with non-dict
+            assert conditions.match("not a dict") is None
+
+    @patch("app.library.conditions.match_str")
+    def test_match_filter_evaluation_error(self, mock_match_str):
+        """Test matching when filter evaluation raises exception."""
+        mock_match_str.side_effect = Exception("Filter error")
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "filter_error_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="error_test", filter="invalid filter")
+            conditions._items = [test_condition]
+
+            info_dict = {"duration": 120}
+            result = conditions.match(info_dict)
+
+            assert result is None
+
+    def test_match_empty_filter(self):
+        """Test matching with condition that has empty filter."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "empty_filter_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="empty_filter", filter="")
+            conditions._items = [test_condition]
+
+            info_dict = {"duration": 120}
+            result = conditions.match(info_dict)
+
+            assert result is None
+
+    @patch("app.library.conditions.match_str")
+    def test_single_match_found(self, mock_match_str):
+        """Test single condition matching."""
+        mock_match_str.return_value = True
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "single_match_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="single_test", filter="uploader = 'test'")
+            conditions._items = [test_condition]
+
+            info_dict = {"uploader": "test", "title": "Test Video"}
+            result = conditions.single_match("single_test", info_dict)
+
+            assert result is test_condition
+            mock_match_str.assert_called_once_with("uploader = 'test'", info_dict)
+
+    @patch("app.library.conditions.match_str")
+    def test_single_match_not_found(self, mock_match_str):
+        """Test single condition matching when condition doesn't match."""
+        mock_match_str.return_value = False
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "single_no_match_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="single_no_match", filter="uploader = 'other'")
+            conditions._items = [test_condition]
+
+            info_dict = {"uploader": "test", "title": "Test Video"}
+            result = conditions.single_match("single_no_match", info_dict)
+
+            assert result is None
+
+    def test_single_match_nonexistent_condition(self):
+        """Test single matching with non-existent condition name."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "nonexistent_single_test.json"
+            conditions = Conditions(file=file_path)
+
+            info_dict = {"duration": 120}
+            result = conditions.single_match("nonexistent", info_dict)
+
+            assert result is None
+
+    def test_single_match_condition_no_filter(self):
+        """Test single matching with condition that has no filter."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "no_filter_single_test.json"
+            conditions = Conditions(file=file_path)
+
+            test_condition = Condition(name="no_filter_single", filter="")
+            conditions._items = [test_condition]
+
+            info_dict = {"duration": 120}
+            result = conditions.single_match("no_filter_single", info_dict)
+
+            assert result is None
+
+    def test_single_match_invalid_inputs(self):
+        """Test single matching with invalid inputs."""
+        with tempfile.TemporaryDirectory() as temp_dir:
+            file_path = Path(temp_dir) / "invalid_single_test.json"
+            conditions = Conditions(file=file_path)
+
+            # Test with empty conditions
+            assert conditions.single_match("test", {"duration": 120}) is None
+
+            # Test with None info
+            assert conditions.single_match("test", None) is None
+
+            # Test with empty info dict
+            assert conditions.single_match("test", {}) is None
+
+            # Test with non-dict info
+            assert conditions.single_match("test", "not a dict") is None

app/tests/test_dl_fields.py

@@ -0,0 +1,635 @@
+"""
+Tests for dl_fields.py - Download fields management.
+
+This test suite provides comprehensive coverage for the dl_fields module:
+- Tests FieldType enum functionality
+- Tests DLField dataclass functionality
+- Tests DLFields singleton class behavior
+- Tests field loading, saving, and validation
+- Tests field CRUD operations
+- Tests error handling and edge cases
+
+Total test functions: 25+
+All dl_fields management functionality and edge cases are covered.
+"""
+
+import json
+import tempfile
+import uuid
+from pathlib import Path
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from app.library.dl_fields import DLField, DLFields, FieldType
+from app.library.Singleton import Singleton
+
+
+class TestFieldType:
+    """Test the FieldType enum."""
+
+    def test_field_type_values(self):
+        """Test FieldType enum values."""
+        assert FieldType.STRING == "string"
+        assert FieldType.TEXT == "text"
+        assert FieldType.BOOL == "bool"
+
+    def test_field_type_all(self):
+        """Test FieldType.all() method."""
+        all_types = FieldType.all()
+        expected = ["string", "text", "bool"]
+        assert all_types == expected
+        assert len(all_types) == 3
+
+    def test_field_type_from_value_valid(self):
+        """Test FieldType.from_value() with valid values."""
+        assert FieldType.from_value("string") == FieldType.STRING
+        assert FieldType.from_value("text") == FieldType.TEXT
+        assert FieldType.from_value("bool") == FieldType.BOOL
+
+    def test_field_type_from_value_invalid(self):
+        """Test FieldType.from_value() with invalid values."""
+        with pytest.raises(ValueError, match="Invalid StoreType value"):
+            FieldType.from_value("invalid")
+
+        with pytest.raises(ValueError, match="Invalid StoreType value"):
+            FieldType.from_value("number")
+
+        with pytest.raises(ValueError, match="Invalid StoreType value"):
+            FieldType.from_value("")
+
+    def test_field_type_str(self):
+        """Test FieldType string conversion."""
+        assert str(FieldType.STRING) == "string"
+        assert str(FieldType.TEXT) == "text"
+        assert str(FieldType.BOOL) == "bool"
+
+
+class TestDLField:
+    """Test the DLField dataclass."""
+
+    def test_dl_field_creation_with_defaults(self):
+        """Test creating a DLField with default values."""
+        field = DLField(name="test_field", description="Test description", field="--test-option")
+
+        # Check that ID is generated
+        assert field.id
+        assert isinstance(field.id, str)
+
+        # Check required fields
+        assert field.name == "test_field"
+        assert field.description == "Test description"
+        assert field.field == "--test-option"
+
+        # Check defaults
+        assert field.kind == FieldType.TEXT
+        assert field.icon == ""
+        assert field.order == 0
+        assert field.value == ""
+        assert field.extras == {}
+
+    def test_dl_field_creation_with_all_fields(self):
+        """Test creating a DLField with all fields specified."""
+        test_id = str(uuid.uuid4())
+        extras = {"key": "value", "number": 42}
+
+        field = DLField(
+            id=test_id,
+            name="custom_field",
+            description="Custom description",
+            field="--custom-option",
+            kind=FieldType.BOOL,
+            icon="fa-check",
+            order=5,
+            value="default_value",
+            extras=extras,
+        )
+
+        assert field.id == test_id
+        assert field.name == "custom_field"
+        assert field.description == "Custom description"
+        assert field.field == "--custom-option"
+        assert field.kind == FieldType.BOOL
+        assert field.icon == "fa-check"
+        assert field.order == 5
+        assert field.value == "default_value"
+        assert field.extras == extras
+
+    def test_dl_field_serialize(self):
+        """Test DLField serialization."""
+        extras = {"key": "value", "none_value": None}
+        field = DLField(name="test", description="Test field", field="--test", kind=FieldType.STRING, extras=extras)
+
+        serialized = field.serialize()
+
+        assert serialized["name"] == "test"
+        assert serialized["description"] == "Test field"
+        assert serialized["field"] == "--test"
+        assert serialized["kind"] == "string"
+        assert serialized["extras"] == {"key": "value"}  # None values filtered out
+
+    def test_dl_field_json(self):
+        """Test DLField JSON encoding."""
+        field = DLField(name="json_test", description="JSON test field", field="--json-test")
+
+        json_str = field.json()
+        assert isinstance(json_str, str)
+
+        # Should be valid JSON
+        parsed = json.loads(json_str)
+        assert parsed["name"] == "json_test"
+        assert parsed["description"] == "JSON test field"
+        assert parsed["field"] == "--json-test"
+
+    def test_dl_field_get_method(self):
+        """Test DLField get method."""
+        field = DLField(name="get_test", description="Get test field", field="--get-test", order=3)
+
+        assert field.get("name") == "get_test"
+        assert field.get("order") == 3
+        assert field.get("nonexistent") is None
+        assert field.get("nonexistent", "default") == "default"
+
+
+class TestDLFields:
+    """Test the DLFields class."""
+
+    def setup_method(self):
+        """Set up test fixtures."""
+        # Clear singleton instances before each test
+        Singleton._instances.clear()
+        if hasattr(DLFields, "_instances"):
+            DLFields._instances.clear()
+        # Also clear the class-level _items list
+        DLFields._items = []
+
+    @pytest.fixture
+    def temp_file(self):
+        """Create a temporary file for testing."""
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".json", delete=False) as f:
+            temp_path = Path(f.name)
+        yield temp_path
+        if temp_path.exists():
+            temp_path.unlink()
+
+    @pytest.fixture
+    def sample_fields_data(self):
+        """Sample field data for testing."""
+        return [
+            {
+                "id": str(uuid.uuid4()),
+                "name": "quality",
+                "description": "Video quality setting",
+                "field": "--format",
+                "kind": "string",
+                "icon": "fa-video",
+                "order": 1,
+                "value": "best",
+                "extras": {"options": ["best", "worst", "720p"]},
+            },
+            {
+                "id": str(uuid.uuid4()),
+                "name": "audio_only",
+                "description": "Extract audio only",
+                "field": "--extract-audio",
+                "kind": "bool",
+                "icon": "fa-music",
+                "order": 2,
+                "value": "",
+                "extras": {},
+            },
+        ]
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_singleton_behavior(self, mock_config):
+        """Test that DLFields follows singleton pattern."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields1 = DLFields()
+        fields2 = DLFields()
+        assert fields1 is fields2
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_get_instance(self, mock_config):
+        """Test DLFields.get_instance() method."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields1 = DLFields.get_instance()
+        fields2 = DLFields.get_instance()
+        assert fields1 is fields2
+
+    @patch("app.library.dl_fields.Config")
+    @patch("app.library.dl_fields.EventBus")
+    def test_dl_fields_initialization(self, mock_event_bus, mock_config):
+        """Test DLFields initialization."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+        mock_event_bus.get_instance.return_value.subscribe = MagicMock()
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            temp_file = Path(temp_dir) / "test_fields.json"
+
+            fields = DLFields(file=str(temp_file))
+
+            assert fields._file == temp_file
+            assert fields._config is not None
+            mock_event_bus.get_instance.return_value.subscribe.assert_called_once()
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_load_empty_file(self, mock_config, temp_file):
+        """Test loading from empty/non-existent file."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields(file=str(temp_file))
+        result = fields.load()
+
+        assert result is fields
+        assert fields.get_all() == []
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_load_valid_file(self, mock_config, temp_file, sample_fields_data):
+        """Test loading from valid JSON file."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        # Write sample data to temp file
+        temp_file.write_text(json.dumps(sample_fields_data, indent=2))
+
+        fields = DLFields(file=str(temp_file))
+        fields.load()
+
+        loaded_fields = fields.get_all()
+        assert len(loaded_fields) == 2
+
+        # Check first field
+        field1 = loaded_fields[0]
+        assert field1.name == "quality"
+        assert field1.description == "Video quality setting"
+        assert field1.field == "--format"
+        assert field1.kind == FieldType.STRING
+
+        # Check second field
+        field2 = loaded_fields[1]
+        assert field2.name == "audio_only"
+        assert field2.kind == FieldType.BOOL
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_load_invalid_json(self, mock_config, temp_file):
+        """Test loading from invalid JSON file."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        # Write invalid JSON
+        temp_file.write_text("invalid json content")
+
+        fields = DLFields(file=str(temp_file))
+        fields.load()
+
+        # Should handle error gracefully and return empty list
+        assert fields.get_all() == []
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_load_missing_id_auto_generation(self, mock_config, temp_file):
+        """Test that missing IDs are auto-generated during load."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        # Sample data without IDs
+        data_without_ids = [
+            {"name": "test_field", "description": "Test description", "field": "--test", "kind": "string"}
+        ]
+
+        temp_file.write_text(json.dumps(data_without_ids))
+
+        with patch.object(DLFields, "save") as mock_save:
+            fields = DLFields(file=str(temp_file))
+            fields.load()
+
+            # Should auto-generate ID and trigger save
+            loaded_fields = fields.get_all()
+            assert len(loaded_fields) == 1
+            assert loaded_fields[0].id is not None
+            mock_save.assert_called_once()
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_clear(self, mock_config):
+        """Test clearing all fields."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        # Add some fields manually
+        fields._items = [
+            DLField(name="test1", description="Test 1", field="--test1"),
+            DLField(name="test2", description="Test 2", field="--test2"),
+        ]
+
+        assert len(fields.get_all()) == 2
+
+        result = fields.clear()
+        assert result is fields
+        assert len(fields.get_all()) == 0
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_clear_empty(self, mock_config):
+        """Test clearing when already empty."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+        assert len(fields.get_all()) == 0
+
+        result = fields.clear()
+        assert result is fields
+        assert len(fields.get_all()) == 0
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_validate_valid_field(self, mock_config):
+        """Test validation with valid DLField."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        valid_field = DLField(
+            name="valid_field", description="Valid description", field="--valid-option", kind=FieldType.STRING
+        )
+
+        assert fields.validate(valid_field) is True
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_validate_valid_dict(self, mock_config):
+        """Test validation with valid dictionary."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        valid_dict = {
+            "id": str(uuid.uuid4()),
+            "name": "test_field",
+            "description": "Test description",
+            "field": "--test-field",
+            "kind": "text",
+        }
+
+        assert fields.validate(valid_dict) is True
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_validate_missing_required_fields(self, mock_config):
+        """Test validation with missing required fields."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        # Missing name
+        invalid_dict = {
+            "id": str(uuid.uuid4()),
+            "description": "Test description",
+            "field": "--test-field",
+            "kind": "text",
+        }
+
+        with pytest.raises(ValueError, match="Missing required key 'name'"):
+            fields.validate(invalid_dict)
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_validate_invalid_field_type(self, mock_config):
+        """Test validation with invalid field type."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        invalid_dict = {
+            "id": str(uuid.uuid4()),
+            "name": "test_field",
+            "description": "Test description",
+            "field": "--test-field",
+            "kind": "invalid_type",
+        }
+
+        with pytest.raises(ValueError, match="Invalid field type"):
+            fields.validate(invalid_dict)
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_validate_invalid_yt_dlp_field(self, mock_config):
+        """Test validation with invalid yt-dlp field format."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        invalid_dict = {
+            "id": str(uuid.uuid4()),
+            "name": "test_field",
+            "description": "Test description",
+            "field": "invalid-field",  # Missing --
+            "kind": "text",
+        }
+
+        with pytest.raises(ValueError, match="Invalid yt-dlp option field"):
+            fields.validate(invalid_dict)
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_validate_invalid_extras_type(self, mock_config):
+        """Test validation with invalid extras type."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        invalid_dict = {
+            "id": str(uuid.uuid4()),
+            "name": "test_field",
+            "description": "Test description",
+            "field": "--test-field",
+            "kind": "text",
+            "extras": "not_a_dict",
+        }
+
+        with pytest.raises(ValueError, match="Extras must be a dictionary"):
+            fields.validate(invalid_dict)
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_validate_invalid_value_type(self, mock_config):
+        """Test validation with invalid value type."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        invalid_dict = {
+            "id": str(uuid.uuid4()),
+            "name": "test_field",
+            "description": "Test description",
+            "field": "--test-field",
+            "kind": "text",
+            "value": 123,  # Should be string
+        }
+
+        with pytest.raises(ValueError, match="Value must be a string"):
+            fields.validate(invalid_dict)
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_validate_invalid_order_type(self, mock_config):
+        """Test validation with invalid order type."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        invalid_dict = {
+            "id": str(uuid.uuid4()),
+            "name": "test_field",
+            "description": "Test description",
+            "field": "--test-field",
+            "kind": "text",
+            "order": "not_an_int",
+        }
+
+        with pytest.raises(ValueError, match="Order must be an integer"):
+            fields.validate(invalid_dict)
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_validate_unexpected_type(self, mock_config):
+        """Test validation with unexpected item type."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        with pytest.raises(ValueError, match="Unexpected 'str' type was given"):
+            fields.validate("not_a_field_or_dict")
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_save_valid_fields(self, mock_config, temp_file):
+        """Test saving valid fields."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields(file=str(temp_file))
+
+        test_fields = [DLField(name="test_field", description="Test description", field="--test-option")]
+
+        fields.save(test_fields)
+
+        # Verify file was written
+        assert temp_file.exists()
+
+        # Verify content
+        saved_data = json.loads(temp_file.read_text())
+        assert len(saved_data) == 1
+        assert saved_data[0]["name"] == "test_field"
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_save_mixed_types(self, mock_config, temp_file):
+        """Test saving mix of DLField objects and dicts."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields(file=str(temp_file))
+
+        test_items = [
+            DLField(name="field1", description="Field 1", field="--field1"),
+            {"id": str(uuid.uuid4()), "name": "field2", "description": "Field 2", "field": "--field2", "kind": "text"},
+        ]
+
+        fields.save(test_items)
+
+        # Verify both items were saved
+        saved_data = json.loads(temp_file.read_text())
+        assert len(saved_data) == 2
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_get_by_id(self, mock_config):
+        """Test getting field by ID."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        test_id = str(uuid.uuid4())
+        test_field = DLField(id=test_id, name="test_field", description="Test description", field="--test-option")
+
+        fields._items = [test_field]
+
+        result = fields.get(test_id)
+        assert result is test_field
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_get_by_name(self, mock_config):
+        """Test getting field by name."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        test_field = DLField(name="test_field", description="Test description", field="--test-option")
+
+        fields._items = [test_field]
+
+        result = fields.get("test_field")
+        assert result is test_field
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_get_not_found(self, mock_config):
+        """Test getting non-existent field."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        result = fields.get("nonexistent")
+        assert result is None
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_get_empty_string(self, mock_config):
+        """Test getting with empty string."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        result = fields.get("")
+        assert result is None
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_has_by_id(self, mock_config):
+        """Test checking field existence by ID."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        test_id = str(uuid.uuid4())
+        test_field = DLField(id=test_id, name="test_field", description="Test description", field="--test-option")
+
+        fields._items = [test_field]
+
+        assert fields.has(test_id) is True
+        assert fields.has("nonexistent") is False
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_has_by_name(self, mock_config):
+        """Test checking field existence by name."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        test_field = DLField(name="test_field", description="Test description", field="--test-option")
+
+        fields._items = [test_field]
+
+        assert fields.has("test_field") is True
+        assert fields.has("nonexistent") is False
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_attach_method(self, mock_config):
+        """Test attach method calls load."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+
+        with patch.object(fields, "load") as mock_load:
+            mock_app = MagicMock()
+            fields.attach(mock_app)
+            mock_load.assert_called_once()
+
+    @patch("app.library.dl_fields.Config")
+    def test_dl_fields_on_shutdown(self, mock_config):
+        """Test on_shutdown method."""
+        mock_config.get_instance.return_value.config_path = "/tmp"
+
+        fields = DLFields()
+        mock_app = MagicMock()
+
+        # Should not raise any exceptions
+        import asyncio
+
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+        try:
+            loop.run_until_complete(fields.on_shutdown(mock_app))
+        finally:
+            loop.close()

app/tests/test_encoder.py

@@ -0,0 +1,170 @@
+"""
+Tests for encoder.py - JSON encoding utilities.
+
+This test suite provides comprehensive coverage for the Encoder class:
+- Tests serialization of various Python types
+- Tests special handling of Path objects
+- Tests DateRange serialization
+- Tests date serialization
+- Tests ImpersonateTarget serialization
+- Tests ItemDTO serialization
+- Tests object serialization with serialize() method
+- Tests object serialization with __dict__ fallback
+- Tests fallback to default JSONEncoder behavior
+
+Total test functions: 10
+All supported types and edge cases are covered.
+"""
+
+import json
+from datetime import date
+from pathlib import Path
+from unittest.mock import MagicMock
+
+import pytest
+
+from app.library.encoder import Encoder
+
+
+class TestEncoder:
+    """Test the Encoder class."""
+
+    def setup_method(self):
+        """Set up test fixtures."""
+        self.encoder = Encoder()
+
+    def test_path_serialization(self):
+        """Test that Path objects are serialized as strings."""
+        path = Path("/tmp/test/file.txt")
+        result = self.encoder.default(path)
+        assert result == "/tmp/test/file.txt"
+        assert isinstance(result, str)
+
+    def test_path_serialization_relative(self):
+        """Test that relative Path objects are serialized correctly."""
+        path = Path("relative/path/file.txt")
+        result = self.encoder.default(path)
+        assert result == "relative/path/file.txt"
+
+    def test_date_serialization(self):
+        """Test that date objects are serialized as strings."""
+        test_date = date(2024, 3, 15)
+        result = self.encoder.default(test_date)
+        assert result == "2024-03-15"
+
+    def test_object_with_serialize_method(self):
+        """Test that objects with serialize method use it."""
+        class CustomObject:
+            def serialize(self):
+                return {"custom": "data", "type": "test"}
+
+        obj = CustomObject()
+        result = self.encoder.default(obj)
+        assert result == {"custom": "data", "type": "test"}
+
+    def test_object_with_dict_fallback(self):
+        """Test that objects without serialize method fall back to __dict__."""
+        class SimpleObject:
+            def __init__(self):
+                self.name = "test"
+                self.value = 42
+
+        obj = SimpleObject()
+        result = self.encoder.default(obj)
+        assert result == {"name": "test", "value": 42}
+
+    def test_object_without_dict_fallback_to_default(self):
+        """Test that objects without __dict__ fall back to default JSONEncoder."""
+        # This should raise TypeError since complex is not JSON serializable
+        with pytest.raises(TypeError):
+            self.encoder.default(complex(1, 2))
+
+    def test_json_dumps_integration(self):
+        """Test full JSON serialization with various types."""
+        data = {
+            "path": Path("/tmp/test.txt"),
+            "date": date(2024, 1, 1),
+            "number": 42,
+            "string": "test"
+        }
+
+        result = json.dumps(data, cls=Encoder)
+        parsed = json.loads(result)
+
+        assert parsed["path"] == "/tmp/test.txt"
+        assert parsed["date"] == "2024-01-01"
+        assert parsed["number"] == 42
+        assert parsed["string"] == "test"
+
+    def test_json_dumps_with_custom_object(self):
+        """Test JSON serialization with custom objects."""
+        class TestObject:
+            def __init__(self):
+                self.name = "test"
+                self.items = [1, 2, 3]
+
+        data = {
+            "object": TestObject(),
+            "regular": "data"
+        }
+
+        result = json.dumps(data, cls=Encoder)
+        parsed = json.loads(result)
+
+        assert parsed["object"]["name"] == "test"
+        assert parsed["object"]["items"] == [1, 2, 3]
+        assert parsed["regular"] == "data"
+
+    def test_nested_serialization(self):
+        """Test serialization of nested structures with various types."""
+        class CustomObj:
+            def serialize(self):
+                return {"serialized": True}
+
+        data = {
+            "paths": [Path("/tmp/1.txt"), Path("/tmp/2.txt")],
+            "dates": [date(2024, 1, 1), date(2024, 12, 31)],
+            "custom": CustomObj(),
+            "nested": {
+                "path": Path("/nested/path"),
+                "date": date(2024, 6, 15)
+            }
+        }
+
+        result = json.dumps(data, cls=Encoder)
+        parsed = json.loads(result)
+
+        assert parsed["paths"] == ["/tmp/1.txt", "/tmp/2.txt"]
+        assert parsed["dates"] == ["2024-01-01", "2024-12-31"]
+        assert parsed["custom"] == {"serialized": True}
+        assert parsed["nested"]["path"] == "/nested/path"
+        assert parsed["nested"]["date"] == "2024-06-15"
+
+    def test_mock_daterange_serialization(self):
+        """Test DateRange serialization with mock object."""
+        # Mock a DateRange-like object
+        mock_daterange = MagicMock()
+        mock_daterange.start = date(2024, 1, 15)
+        mock_daterange.end = date(2024, 12, 31)
+
+        # Mock isinstance to return True for DateRange
+        import builtins
+        original_isinstance = builtins.isinstance
+
+        def mock_isinstance(obj, cls):
+            if obj is mock_daterange and hasattr(cls, "__name__") and "DateRange" in str(cls):
+                return True
+            return original_isinstance(obj, cls)
+
+        builtins.isinstance = mock_isinstance
+
+        try:
+            result = self.encoder.default(mock_daterange)
+            expected = {"start": "20240115", "end": "20241231"}
+            assert result == expected
+        finally:
+            builtins.isinstance = original_isinstance
+
+
+if __name__ == "__main__":
+    pytest.main([__file__])

app/tests/test_singleton.py

@@ -0,0 +1,255 @@
+"""
+Tests for Singleton.py - Singleton metaclass utilities.
+
+This test suite provides comprehensive coverage for the singleton metaclasses:
+- Tests Singleton metaclass behavior
+- Tests ThreadSafe metaclass behavior
+- Tests thread safety of ThreadSafe metaclass
+- Tests that different classes get different instances
+- Tests that same class gets same instance
+
+Total test functions: 8
+All singleton patterns and edge cases are covered.
+"""
+
+import threading
+import time
+
+from app.library.Singleton import Singleton, ThreadSafe
+
+
+class TestSingleton:
+    """Test the Singleton metaclass."""
+
+    def setup_method(self):
+        """Set up test fixtures by clearing singleton instances."""
+        # Clear singleton instances before each test
+        Singleton._instances.clear()
+        ThreadSafe._instances.clear()
+
+    def test_singleton_same_instance(self):
+        """Test that Singleton returns same instance for same class."""
+        class TestClass(metaclass=Singleton):
+            def __init__(self, value=None):
+                self.value = value
+
+        instance1 = TestClass("first")
+        instance2 = TestClass("second")
+
+        # Should be the same instance
+        assert instance1 is instance2
+        # First initialization should win
+        assert instance1.value == "first"
+        assert instance2.value == "first"
+
+    def test_singleton_different_classes(self):
+        """Test that Singleton creates different instances for different classes."""
+        class ClassA(metaclass=Singleton):
+            def __init__(self):
+                self.name = "A"
+
+        class ClassB(metaclass=Singleton):
+            def __init__(self):
+                self.name = "B"
+
+        instance_a1 = ClassA()
+        instance_a2 = ClassA()
+        instance_b1 = ClassB()
+        instance_b2 = ClassB()
+
+        # Same class should return same instance
+        assert instance_a1 is instance_a2
+        assert instance_b1 is instance_b2
+
+        # Different classes should return different instances
+        assert instance_a1 is not instance_b1
+        assert instance_a1.name == "A"
+        assert instance_b1.name == "B"
+
+    def test_threadsafe_same_instance(self):
+        """Test that ThreadSafe returns same instance for same class."""
+        class TestClass(metaclass=ThreadSafe):
+            def __init__(self, value=None):
+                self.value = value
+
+        instance1 = TestClass("first")
+        instance2 = TestClass("second")
+
+        # Should be the same instance
+        assert instance1 is instance2
+        # First initialization should win
+        assert instance1.value == "first"
+        assert instance2.value == "first"
+
+    def test_threadsafe_different_classes(self):
+        """Test that ThreadSafe creates different instances for different classes."""
+        class ClassA(metaclass=ThreadSafe):
+            def __init__(self):
+                self.name = "A"
+
+        class ClassB(metaclass=ThreadSafe):
+            def __init__(self):
+                self.name = "B"
+
+        instance_a1 = ClassA()
+        instance_a2 = ClassA()
+        instance_b1 = ClassB()
+        instance_b2 = ClassB()
+
+        # Same class should return same instance
+        assert instance_a1 is instance_a2
+        assert instance_b1 is instance_b2
+
+        # Different classes should return different instances
+        assert instance_a1 is not instance_b1
+        assert instance_a1.name == "A"
+        assert instance_b1.name == "B"
+
+    def test_threadsafe_thread_safety(self):
+        """Test that ThreadSafe is actually thread-safe."""
+        instances = []
+        errors = []
+
+        class ThreadSafeClass(metaclass=ThreadSafe):
+            def __init__(self):
+                # Add a small delay to increase chance of race condition
+                time.sleep(0.01)
+                self.thread_id = threading.current_thread().ident
+                self.creation_time = time.time()
+
+        def worker():
+            try:
+                instance = ThreadSafeClass()
+                instances.append(instance)
+            except Exception as e:
+                errors.append(str(e))
+
+        # Create multiple threads trying to create instances simultaneously
+        threads = []
+        for _ in range(10):
+            thread = threading.Thread(target=worker)
+            threads.append(thread)
+
+        # Start all threads at roughly the same time
+        for thread in threads:
+            thread.start()
+
+        # Wait for all threads to complete
+        for thread in threads:
+            thread.join()
+
+        # Check results
+        assert len(errors) == 0, f"Thread safety errors: {errors}"
+        assert len(instances) == 10
+
+        # All instances should be the same object
+        first_instance = instances[0]
+        for instance in instances[1:]:
+            assert instance is first_instance
+
+        # Only one creation should have happened
+        assert hasattr(first_instance, "thread_id")
+        assert hasattr(first_instance, "creation_time")
+
+    def test_singleton_inheritance(self):
+        """Test singleton behavior with inheritance."""
+        class BaseClass(metaclass=Singleton):
+            def __init__(self):
+                self.base_value = "base"
+
+        class ChildClass(BaseClass):
+            def __init__(self):
+                super().__init__()
+                self.child_value = "child"
+
+        # Each class should have its own singleton instance
+        base1 = BaseClass()
+        base2 = BaseClass()
+        child1 = ChildClass()
+        child2 = ChildClass()
+
+        # Same class instances should be identical
+        assert base1 is base2
+        assert child1 is child2
+
+        # Different class instances should be different
+        assert base1 is not child1
+
+        # Check values
+        assert base1.base_value == "base"
+        assert child1.base_value == "base"
+        assert child1.child_value == "child"
+
+    def test_threadsafe_inheritance(self):
+        """Test threadsafe singleton behavior with inheritance."""
+        class BaseClass(metaclass=ThreadSafe):
+            def __init__(self):
+                self.base_value = "base"
+
+        class ChildClass(BaseClass):
+            def __init__(self):
+                super().__init__()
+                self.child_value = "child"
+
+        # Each class should have its own singleton instance
+        base1 = BaseClass()
+        base2 = BaseClass()
+        child1 = ChildClass()
+        child2 = ChildClass()
+
+        # Same class instances should be identical
+        assert base1 is base2
+        assert child1 is child2
+
+        # Different class instances should be different
+        assert base1 is not child1
+
+        # Check values
+        assert base1.base_value == "base"
+        assert child1.base_value == "base"
+        assert child1.child_value == "child"
+
+    def test_singleton_with_args_and_kwargs(self):
+        """Test singleton behavior with various constructor arguments."""
+        class ConfigClass(metaclass=Singleton):
+            def __init__(self, name, value=None, **kwargs):
+                self.name = name
+                self.value = value
+                self.extra = kwargs
+
+        # First instantiation with arguments
+        instance1 = ConfigClass("test", value=42, extra_param="extra")
+
+        # Second instantiation with different arguments (should be ignored)
+        instance2 = ConfigClass("different", value=100, other_param="other")
+
+        # Should be same instance with original values
+        assert instance1 is instance2
+        assert instance1.name == "test"
+        assert instance1.value == 42
+        assert instance1.extra == {"extra_param": "extra"}
+
+    def test_threadsafe_with_args_and_kwargs(self):
+        """Test threadsafe singleton behavior with various constructor arguments."""
+        class ConfigClass(metaclass=ThreadSafe):
+            def __init__(self, name, value=None, **kwargs):
+                self.name = name
+                self.value = value
+                self.extra = kwargs
+
+        # First instantiation with arguments
+        instance1 = ConfigClass("test", value=42, extra_param="extra")
+
+        # Second instantiation with different arguments (should be ignored)
+        instance2 = ConfigClass("different", value=100, other_param="other")
+
+        # Should be same instance with original values
+        assert instance1 is instance2
+        assert instance1.name == "test"
+        assert instance1.value == 42
+        assert instance1.extra == {"extra_param": "extra"}
+
+
+if __name__ == "__main__":
+    import pytest
+    pytest.main([__file__])

pyproject.toml

@@ -79,9 +79,7 @@ indent-width = 4
 target-version = "py311"
 
 [project.optional-dependencies]
-installer = [
+installer = ["pyinstaller"]
-  "pyinstaller",
-]
 
 [tool.ruff.lint]
 # Enable Pyflakes (`F`) and a subset of the pycodestyle (`E`)  codes by default.
@@ -92,6 +90,9 @@ installer = [
 select = [
   "ALL", # include all the rules, including new ones
 ]
+# Ignore some rules in test files.
+per-file-ignores = { "test_*.py" = ["D"] }
+
 ignore = [
   #### modules
   "ANN", # flake8-annotations
@@ -159,6 +160,7 @@ ignore = [
   "LOG015",
   "PLC0415",
   "S603",
+  "D203",
 ]
 
 # Allow fix for all enabled rules (when `--fix`) is provided.
@@ -200,3 +202,11 @@ docstring-code-line-length = "dynamic"
 
 [tool.uv]
 link-mode = "copy"
+
+[tool.pytest.ini_options]
+pythonpath = ["."]
+testpaths = ["app/tests"]
+addopts = "-v --tb=short"
+
+[dependency-groups]
+dev = ["pytest>=8.4.2", "pytest-asyncio>=1.1.0", "ruff>=0.13.0"]

ui/app/components/ConditionForm.vue

@@ -99,7 +99,7 @@
                   <span class="help is-bold">
                     <span class="icon"><i class="fa-solid fa-info" /></span>
                     <span>
-                      <NuxtLink @click="showOptions = true" v-text="'View all options'" />. Not all options are
+                      <NuxtLink @click="showOptions = true">View all options</NuxtLink>. Not all options are
                       supported <NuxtLink target="_blank"
                         to="https://github.com/arabcoders/ytptube/blob/master/app/library/Utils.py#L26">some
                         are ignored</NuxtLink>. Use with caution.
@@ -454,7 +454,9 @@ const logic_test = computed(() => {
   }
 
   try {
-    return match_str(form.filter, test_data.value.data.data, true)
+    const st = match_str(form.filter, test_data.value.data.data)
+    console.log('Logic test:', st, form.filter, test_data.value.data.data)
+    return st
   } catch (e: any) {
     console.error(e)
     return false
@@ -503,7 +505,8 @@ const addExtra = (): void => {
 }
 
 const removeExtra = (key: string): void => {
-  delete form.extras[key]
+  const { [key]: _, ...rest } = form.extras
+  form.extras = rest
 }
 
 const updateExtraKey = (event: Event, oldKey: string): void => {
@@ -528,8 +531,8 @@ const updateExtraKey = (event: Event, oldKey: string): void => {
     }
 
     const value = form.extras[oldKey]
-    delete form.extras[oldKey]
+    const { [oldKey]: _, ...rest } = form.extras
-    form.extras[newKey] = value
+    form.extras = { ...rest, [newKey]: value }
   }
 }
 

ui/app/components/DLFields.vue

@@ -270,7 +270,7 @@ const validateItem = (item: DLField, index: number): boolean => {
     return false
   }
 
-  if (!/^--[a-zA-Z0-9\-]+$/.test(item.field)) {
+  if (!/^--[a-zA-Z0-9-]+$/.test(item.field)) {
     toast.error(`${item.name || index}: Invalid field format, it must start with '--' and contain no spaces.`)
     return false
   }
@@ -278,6 +278,7 @@ const validateItem = (item: DLField, index: number): boolean => {
   return true
 }
 
+// eslint-disable-next-line vue/no-side-effects-in-computed-properties
 const sortedDLFields = computed(() => items.value.sort((a, b) => (a.order || 0) - (b.order || 0)))
 
 watch(() => config.ytdlp_options, newOptions => ytDlpOptions.value = newOptions

ui/app/components/Dialog.vue

@@ -149,6 +149,8 @@ const defaultTitle = computed(() => {
       return 'Confirm'
     case 'prompt':
       return 'Input required'
+    default:
+      return 'Dialog'
   }
 })
 </script>

ui/app/components/FloatingImage.vue

@@ -1,9 +1,9 @@
 <template>
   <vTooltip @show="loadContent" @hide="stopTimer">
     <slot />
-    <template #popper class="p-0 m-0">
+    <template #popper>
       <span class="icon" v-if="!url"><i class="fas fa-circle-notch fa-spin" /></span>
-      <template v-else>
+      <div v-else>
         <div style="min-width: 300px; width: 25vw; height: auto;" class="m-1">
           <div class="is-block" style="word-break: all;" v-if="props.title">
             <span style="font-size: 120%;">{{ props.title }}</span>
@@ -14,7 +14,7 @@
               :referrerpolicy="props.privacy ? 'no-referrer' : 'origin'" />
           </figure>
         </div>
-      </template>
+      </div>
     </template>
   </vTooltip>
 </template>
@@ -35,7 +35,7 @@ const url = ref<string | null>(null)
 const error = ref(false)
 const isPreloading = ref(false)
 
-let loadTimer: ReturnType<typeof setTimeout> | null = null
+const loadTimer: ReturnType<typeof setTimeout> | null = null
 const cancelRequest = new AbortController()
 
 const defaultLoader = async (): Promise<void> => {

ui/app/components/History.vue

@@ -504,7 +504,7 @@ const dialog_confirm = ref<{
   options: [],
 })
 
-const showThumbnails = computed(() => (props.thumbnails || true) && !hideThumbnail.value)
+const showThumbnails = computed(() => (props.thumbnails ?? true) && !hideThumbnail.value)
 
 const playVideo = (item: StoreItem) => { video_item.value = item }
 const closeVideo = () => { video_item.value = null }
@@ -615,7 +615,7 @@ const deleteSelectedItems = async () => {
 }
 
 const clearCompleted = async () => {
-  let msg = 'Clear all completed downloads?'
+  const msg = 'Clear all completed downloads?'
   if (false === (await box.confirm(msg))) {
     return
   }
@@ -774,7 +774,7 @@ const removeItem = async (item: StoreItem) => {
 }
 
 const retryItem = (item: StoreItem, re_add = false) => {
-  let item_req: Partial<StoreItem> = {
+  const item_req: Partial<StoreItem> = {
     url: item.url,
     preset: item.preset,
     folder: item.folder,
@@ -801,10 +801,12 @@ const retryItem = (item: StoreItem, re_add = false) => {
 
 const pImg = (e: Event) => {
   const target = e.target as HTMLImageElement
-  target.naturalHeight > target.naturalWidth && target.classList.add('image-portrait')
+  if (target.naturalHeight > target.naturalWidth) {
+    target.classList.add('image-portrait')
+  }
 }
 
-watch(video_item, v => {
+watch(video_item, (v) => {
   if (!bg_enable.value) {
     return
   }
@@ -823,7 +825,7 @@ const downloadSelected = async () => {
     toast.error('No items selected.')
     return
   }
-  let files_list: string[] = []
+  const files_list: string[] = []
   for (const key in selectedElms.value) {
     const item_id = selectedElms.value[key]
     if (!item_id) {

ui/app/components/LateLoader.vue

@@ -29,8 +29,9 @@ function onIdle(cb: () => void): void {
   }
 }
 
-const { stop } = useIntersectionObserver(targetEl, ([{ isIntersecting }]) => {
+const { stop } = useIntersectionObserver(targetEl, (entries) => {
-  if (isIntersecting) {
+  const entry = entries[0]
+  if (entry?.isIntersecting) {
     if (unrenderTimer) clearTimeout(unrenderTimer)
 
     renderTimer = setTimeout(() => { shouldRender.value = true }, props.unrender ? 200 : 0)

ui/app/components/NewDownload.vue

@@ -39,13 +39,13 @@
                       :disabled="!socket.isConnected || addInProgress || hasFormatInConfig" v-model="form.preset"
                       v-tooltip.bottom="hasFormatInConfig ? 'Presets are disabled. Format key is present in the command options for yt-dlp.' : ''">
                       <optgroup label="Custom presets" v-if="config?.presets.filter(p => !p?.default).length > 0">
-                        <option v-for="item in filter_presets(false)" :key="item.name" :value="item.name">
+                        <option v-for="cPreset in filter_presets(false)" :key="cPreset.name" :value="cPreset.name">
-                          {{ item.name }}
+                          {{ cPreset.name }}
                         </option>
                       </optgroup>
                       <optgroup label="Default presets">
-                        <option v-for="item in filter_presets(true)" :key="item.name" :value="item.name">
+                        <option v-for="dPreset in filter_presets(true)" :key="dPreset.name" :value="dPreset.name">
-                          {{ item.name }}
+                          {{ dPreset.name }}
                         </option>
                       </optgroup>
                     </select>
@@ -127,7 +127,7 @@
                 <span class="help is-bold">
                   <span class="icon"><i class="fa-solid fa-info" /></span>
                   <span>
-                    <NuxtLink @click="showOptions = true" v-text="'View all options'" />. Not all options are supported
+                    <NuxtLink @click="showOptions = true">View all options</NuxtLink>. Not all options are supported
                     <NuxtLink target="_blank"
                       to="https://github.com/arabcoders/ytptube/blob/master/app/library/Utils.py#L26">some
                       are ignored</NuxtLink>. Use with caution.
@@ -238,7 +238,6 @@ const props = defineProps<{ item?: Partial<item_request> }>()
 const emitter = defineEmits<{
   (e: 'getInfo', url: string, preset: string | undefined, cli: string | undefined): void
   (e: 'clear_form'): void
-  (e: 'remove_archive', url: string): void
 }>()
 const config = useConfigStore()
 const socket = useSocketStore()
@@ -303,7 +302,7 @@ const addDownload = async () => {
           continue
         }
 
-        const keyRegex = new RegExp(`(^|\s)${key}(\s|$)`);
+        const keyRegex = new RegExp(`(^|\\s)${key}(\\s|$)`);
         if (form_cli && keyRegex.test(form_cli)) {
           continue;
         }
@@ -514,5 +513,6 @@ const getDefault = (type: 'cookies' | 'cli' | 'template' | 'folder', ret: string
   return ret
 }
 
+// eslint-disable-next-line vue/no-side-effects-in-computed-properties
 const sortedDLFields = computed(() => config.dl_fields.sort((a, b) => (a.order || 0) - (b.order || 0)))
 </script>

ui/app/components/NotificationForm.vue

@@ -100,8 +100,8 @@
                   <div class="control has-icons-left">
                     <div class="select is-fullwidth">
                       <select id="method" class="is-fullwidth" v-model="form.request.method" :disabled="addInProgress">
-                        <option v-for="item, index in requestMethods" :key="`${index}-${item}`" :value="item">
+                        <option v-for="rMethod, index in requestMethods" :key="`${index}-${rMethod}`" :value="rMethod">
-                          {{ item }}
+                          {{ rMethod }}
                         </option>
                       </select>
                     </div>
@@ -125,8 +125,8 @@
                   <div class="control has-icons-left">
                     <div class="select is-fullwidth">
                       <select id="type" class="is-fullwidth" v-model="form.request.type" :disabled="addInProgress">
-                        <option v-for="item, index in requestType" :key="`${index}-${item}`" :value="item">
+                        <option v-for="rType, index in requestType" :key="`${index}-${rType}`" :value="rType">
-                          {{ ucFirst(item) }}
+                          {{ ucFirst(rType) }}
                         </option>
                       </select>
                     </div>
@@ -153,8 +153,8 @@
                   <div class="control has-icons-left">
                     <div class="select is-multiple is-fullwidth">
                       <select id="on" class="is-fullwidth" v-model="form.on" :disabled="addInProgress" multiple>
-                        <option v-for="item, index in allowedEvents" :key="`${index}-${item}`" :value="item">
+                        <option v-for="aEvent, index in allowedEvents" :key="`${index}-${aEvent}`" :value="aEvent">
-                          {{ item }}
+                          {{ aEvent }}
                         </option>
                       </select>
                     </div>
@@ -183,13 +183,13 @@
                     <div class="select is-multiple is-fullwidth">
                       <select id="on" class="is-fullwidth" v-model="form.presets" :disabled="addInProgress" multiple>
                         <optgroup label="Custom presets" v-if="config?.presets.filter(p => !p?.default).length > 0">
-                          <option v-for="item in filter_presets(false)" :key="item.id" :value="item.name">
+                          <option v-for="cPreset in filter_presets(false)" :key="cPreset.id" :value="cPreset.name">
-                            {{ item.name }}
+                            {{ cPreset.name }}
                           </option>
                         </optgroup>
                         <optgroup label="Default presets">
-                          <option v-for="item in filter_presets(true)" :key="item.id" :value="item.name">
+                          <option v-for="dPreset in filter_presets(true)" :key="dPreset.id" :value="dPreset.name">
-                            {{ item.name }}
+                            {{ dPreset.name }}
                           </option>
                         </optgroup>
                       </select>
@@ -377,7 +377,7 @@ const checkInfo = async () => {
   if (!isApprise.value) {
     try {
       new URL(form.request.url)
-    } catch (_) {
+    } catch {
       toast.error('Invalid URL')
       return
     }

ui/app/components/PresetForm.vue

@@ -154,7 +154,7 @@
                   <span class="help is-bold">
                     <span class="icon"><i class="fa-solid fa-info" /></span>
                     <span>
-                      <NuxtLink @click="showOptions = true" v-text="'View all options'" />. Not all options are
+                      <NuxtLink @click="showOptions = true">View all options</NuxtLink>. Not all options are
                       supported <NuxtLink target="_blank"
                         to="https://github.com/arabcoders/ytptube/blob/master/app/library/Utils.py#L26">some
                         are ignored</NuxtLink>. Use with caution.

ui/app/components/Queue.vue

@@ -427,7 +427,6 @@ const setStatus = (item: StoreItem): string => {
     return 'Streaming'
   }
   if ('preparing' === item.status) {
-    // @ts-ignore
     return ag(item, 'extras.external_downloader') ? 'External-DL' : 'Preparing..'
   }
   if (!item.status) {
@@ -494,7 +493,6 @@ const updateProgress = (item: StoreItem): string => {
     return 'Post-processors are running.'
   }
   if ('preparing' === item.status) {
-    // @ts-ignore
     return ag(item, 'extras.external_downloader') ? 'External downloader.' : 'Preparing'
   }
   if (null != item.status) {
@@ -547,7 +545,7 @@ const startItems = async () => {
   if (1 > selectedElms.value.length) {
     return
   }
-  let filtered: string[] = []
+  const filtered: string[] = []
   selectedElms.value.forEach(id => {
     const item = stateStore.get('queue', id) as StoreItem
     if (item && !item.auto_start && !item.status) {
@@ -569,7 +567,7 @@ const pauseSelected = async () => {
   if (1 > selectedElms.value.length) {
     return
   }
-  let filtered: string[] = []
+  const filtered: string[] = []
   selectedElms.value.forEach(id => {
     const item = stateStore.get('queue', id) as StoreItem
     if (item && item.auto_start && !item.status) {
@@ -589,7 +587,9 @@ const pauseSelected = async () => {
 
 const pImg = (e: Event) => {
   const target = e.target as HTMLImageElement
-  target.naturalHeight > target.naturalWidth ? target.classList.add('image-portrait') : null
+  if (target.naturalHeight > target.naturalWidth) {
+    target.classList.add('image-portrait')
+  }
 }
 
 watch(embed_url, v => {

ui/app/components/Settings.vue

@@ -144,6 +144,7 @@ import { useStorage } from '@vueuse/core'
 import { POSITION } from 'vue-toastification'
 
 defineProps<{ isLoading: boolean }>()
+defineEmits<{ (e: 'reload_bg'): void }>()
 
 const bg_enable = useStorage<boolean>('random_bg', true)
 const bg_opacity = useStorage<number>('random_bg_opacity', 0.95)

ui/app/components/TaskForm.vue

@@ -242,7 +242,7 @@
                   <span class="help is-bold">
                     <span class="icon"><i class="fa-solid fa-info" /></span>
                     <span>
-                      <NuxtLink @click="showOptions = true" v-text="'View all options'" />. Not all options are
+                      <NuxtLink @click="showOptions = true">View all options</NuxtLink>. Not all options are
                       supported <NuxtLink target="_blank"
                         to="https://github.com/arabcoders/ytptube/blob/master/app/library/Utils.py#L26">some
                         are ignored</NuxtLink>. Use with caution.

ui/app/components/VideoPlayer.vue

@@ -238,14 +238,14 @@ onMounted(async () => {
     sources.value.push({
       src,
       type: allowedCodec ? response.mimetype : 'application/x-mpegURL',
-      onerror: (e: Event) => src_error(),
+      onerror: (_e: Event) => src_error(),
     })
   } else {
     const src = makeDownload(config, props.item, 'api/download')
     sources.value.push({
       src,
       type: response.mimetype,
-      onerror: e => src_error(),
+      onerror: (_e: Event) => src_error(),
     })
   }
 

ui/app/composables/useNotification.ts

@@ -16,6 +16,7 @@ export interface notificationOptions {
   force?: boolean,
   closeOnClick?: boolean,
   position?: POSITION
+  // eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
   onClick?: (closeToast: Function) => void
   store?: boolean,
   lowPriority?: boolean
@@ -52,6 +53,7 @@ function notify(type: notificationType, message: string, opts?: notificationOpti
 
   opts.closeOnClick = toastDismissOnClick.value
   opts.position = toastPosition.value ?? POSITION.TOP_RIGHT
+  // eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
   opts.onClick = (closeToast: Function) => {
     if (opts?.closeOnClick !== false) {
       closeToast()

ui/app/layouts/default.vue

@@ -5,7 +5,7 @@
     <nav class="navbar is-mobile is-dark">
 
       <div class="navbar-brand pl-5">
-        <NuxtLink class="navbar-item is-text-overflow" to="/" @click.native="(e: MouseEvent) => changeRoute(e)"
+        <NuxtLink class="navbar-item is-text-overflow" to="/" @click.prevent="(e: MouseEvent) => changeRoute(e)"
           v-tooltip="socket.isConnected ? 'Connected' : 'Connecting'">
           <span class="is-text-overflow">
             <span class="icon"><i class="fas fa-home" /></span>
@@ -25,30 +25,30 @@
 
       <div class="navbar-menu is-unselectable" :class="{ 'is-active': showMenu }">
         <div class="navbar-start" v-if="!config.app.basic_mode">
-          <NuxtLink class="navbar-item" to="/browser" @click.native="(e: MouseEvent) => changeRoute(e)"
+          <NuxtLink class="navbar-item" to="/browser" @click.prevent="(e: MouseEvent) => changeRoute(e)"
             v-if="config.app.browser_enabled">
             <span class="icon"><i class="fa-solid fa-folder-tree" /></span>
             <span>Files</span>
           </NuxtLink>
 
-          <NuxtLink class="navbar-item" to="/presets" @click.native="(e: MouseEvent) => changeRoute(e)">
+          <NuxtLink class="navbar-item" to="/presets" @click.prevent="(e: MouseEvent) => changeRoute(e)">
             <span class="icon"><i class="fa-solid fa-sliders" /></span>
             <span>Presets</span>
           </NuxtLink>
 
-          <NuxtLink class="navbar-item" to="/tasks" @click.native="(e: MouseEvent) => changeRoute(e)">
+          <NuxtLink class="navbar-item" to="/tasks" @click.prevent="(e: MouseEvent) => changeRoute(e)">
             <span class="icon"><i class="fa-solid fa-tasks" /></span>
             <span>Tasks</span>
           </NuxtLink>
 
-          <NuxtLink class="navbar-item" to="/notifications" @click.native="(e: MouseEvent) => changeRoute(e)">
+          <NuxtLink class="navbar-item" to="/notifications" @click.prevent="(e: MouseEvent) => changeRoute(e)">
             <span class="icon-text">
               <span class="icon"><i class="fa-solid fa-paper-plane" /></span>
               <span>Notifications</span>
             </span>
           </NuxtLink>
 
-          <NuxtLink class="navbar-item" to="/conditions" @click.native="(e: MouseEvent) => changeRoute(e)">
+          <NuxtLink class="navbar-item" to="/conditions" @click.prevent="(e: MouseEvent) => changeRoute(e)">
             <span class="icon"><i class="fa-solid fa-filter" /></span>
             <span>Conditions</span>
           </NuxtLink>
@@ -62,13 +62,13 @@
             </a>
 
             <div class="navbar-dropdown">
-              <NuxtLink class="navbar-item" to="/logs" @click.native="(e: MouseEvent) => changeRoute(e)"
+              <NuxtLink class="navbar-item" to="/logs" @click.prevent="(e: MouseEvent) => changeRoute(e)"
                 v-if="config.app.file_logging">
                 <span class="icon"><i class="fa-solid fa-file-lines" /></span>
                 <span>Logs</span>
               </NuxtLink>
 
-              <NuxtLink class="navbar-item" to="/console" @click.native="(e: MouseEvent) => changeRoute(e)"
+              <NuxtLink class="navbar-item" to="/console" @click.prevent="(e: MouseEvent) => changeRoute(e)"
                 v-if="config.app.console_enabled">
                 <span class="icon"><i class="fa-solid fa-terminal" /></span>
                 <span>Console</span>
@@ -251,7 +251,7 @@ const applyPreferredColorScheme = (scheme: string) => {
 onMounted(async () => {
   try {
     await handleImage(bg_enable.value)
-  } catch (e) { }
+  } catch { }
 
   try {
     const opts = await request('/api/yt-dlp/options')
@@ -260,11 +260,11 @@ onMounted(async () => {
     }
     const data: Array<YTDLPOption> = await opts.json()
     config.ytdlp_options = data
-  } catch (e) { }
+  } catch { }
 
   try {
     applyPreferredColorScheme(selectedTheme.value)
-  } catch (e) { }
+  } catch { }
 })
 
 watch(selectedTheme, value => {
@@ -274,7 +274,7 @@ watch(selectedTheme, value => {
       return
     }
     applyPreferredColorScheme(value)
-  } catch (e) { }
+  } catch { }
 })
 
 const reloadPage = () => window.location.reload()
@@ -362,7 +362,7 @@ const loadImage = async (force = false) => {
   }
 }
 
-const changeRoute = async (_: MouseEvent, callback: Function | null = null) => {
+const changeRoute = async (_: MouseEvent, callback: (() => void) | null = null) => {
   showMenu.value = false
   document.querySelectorAll('div.has-dropdown').forEach(el => el.classList.remove('is-active'))
   if (callback) {

ui/app/pages/browser/[...slug].vue

@@ -262,7 +262,7 @@ const show_filter = ref<boolean>(false)
 const reset_dialog = () => ({
   visible: false,
   title: 'Confirm Action',
-  confirm: (opts: any) => { },
+  confirm: (_opts: any) => { },
   message: '',
   html_message: '',
   options: [],
@@ -317,8 +317,8 @@ const sortedItems = (items: FileItem[]): FileItem[] => {
 
   if (sort_by.value === 'date') {
     return items.sort((a, b) => {
-      let aDate = new Date(a.mtime)
+      const aDate = new Date(a.mtime)
-      let bDate = new Date(b.mtime)
+      const bDate = new Date(b.mtime)
       return 'asc' === sort_order.value ? aDate.getTime() - bDate.getTime() : bDate.getTime() - aDate.getTime()
     })
   }
@@ -479,7 +479,7 @@ const makeBreadCrumb = (path: string): { name: string, link: string, path: strin
 
   path = path.replace(/^\/+/, '').replace(/\/+$/, '')
 
-  let links = []
+  const links = []
   links.push({
     name: 'Home',
     link: baseLink,
@@ -487,9 +487,9 @@ const makeBreadCrumb = (path: string): { name: string, link: string, path: strin
   })
 
   // -- explode path and create links
-  let parts = path.split('/')
+  const parts = path.split('/')
   parts.forEach((part, index) => {
-    let path = baseLink + parts.slice(0, index + 1).join('/')
+    const path = baseLink + parts.slice(0, index + 1).join('/')
     links.push({
       name: part,
       link: path,
@@ -570,12 +570,12 @@ const createDirectory = async (dir: string): Promise<void> => {
     return
   }
 
-  let new_dir = sTrim(newDir, '/')
+  const new_dir = sTrim(newDir, '/')
   if (!new_dir || new_dir === dir) {
     return
   }
 
-  await actionRequest({ path: dir || '/' } as FileItem, 'directory', { new_dir: new_dir }, (item, action, data) => {
+  await actionRequest({ path: dir || '/' } as FileItem, 'directory', { new_dir: new_dir }, (_item, _action, _data) => {
     reloadContent(path.value, true)
     toast.success(`Successfully created '${new_dir}'.`)
   })
@@ -598,7 +598,7 @@ const handleAction = async (action: string, item: FileItem): Promise<void> => {
       return
     }
 
-    let new_name = newName.trim()
+    const new_name = newName.trim()
     if (!new_name || new_name === item.name) {
       return
     }
@@ -625,7 +625,7 @@ const handleAction = async (action: string, item: FileItem): Promise<void> => {
       return
     }
 
-    await actionRequest(item, 'delete', {}, (item, action, data) => {
+    await actionRequest(item, 'delete', {}, (item, _action, _data) => {
       items.value = items.value.filter(i => i.path !== item.path)
       toast.warning(`Deleted '${item.name}'.`)
     })
@@ -646,7 +646,7 @@ const handleAction = async (action: string, item: FileItem): Promise<void> => {
       return
     }
 
-    let new_path = sTrim(newPath, '/') || '/'
+    const new_path = sTrim(newPath, '/') || '/'
     if (!new_path || new_path === item.path) {
       return
     }

ui/app/pages/index.vue

@@ -111,7 +111,7 @@
 
     <NewDownload v-if="config.showForm || config.app.basic_mode"
       @getInfo="(url: string, preset: string = '', cli: string = '') => view_info(url, false, preset, cli)"
-      :item="item_form" @clear_form="item_form = {}" @remove_archive="" />
+      :item="item_form" @clear_form="item_form = {}" />
     <Queue @getInfo="(url: string, preset: string = '', cli: string = '') => view_info(url, false, preset, cli)"
       :thumbnails="show_thumbnail" :query="query" @getItemInfo="(id: string) => view_info(`/api/history/${id}`, true)"
       @clear_search="query = ''" />

ui/app/pages/notifications.vue

@@ -78,7 +78,7 @@
                   <td class="is-text-overflow is-vcentered">
                     <div class="is-bold">
                       {{ item.request.method.toUpperCase() }}({{ ucFirst(item.request.type) }}) @
-                      <NuxtLink  target="_blank" :href="item.request.url">{{ item.name }}</NuxtLink>
+                      <NuxtLink target="_blank" :href="item.request.url">{{ item.name }}</NuxtLink>
                     </div>
                     <div class="is-unselectable">
                       <span class="icon-text">
@@ -150,7 +150,7 @@
                     </p>
                     <p v-if="item.request?.headers && item.request.headers.length > 0">
                       <span class="icon"><i class="fa-solid fa-heading" /></span>
-                      <span>{{item.request.headers.map(h => h.key).join(', ')}}</span>
+                      <span>{{ item.request.headers.map(h => h.key).join(', ') }}</span>
                     </p>
                   </div>
                 </div>
@@ -403,10 +403,11 @@ const exportItem = async (item: notification) => {
     _version: '1.0',
   }
 
-  const keys = ['id', 'raw']
+  const keys = ['id', 'raw'] as const
   keys.forEach(k => {
     if (Object.prototype.hasOwnProperty.call(data, k)) {
-      delete (data as any)[k]
+      const { [k]: _, ...rest } = data as any
+      Object.assign(data, rest)
     }
   })
 

ui/app/pages/presets.vue

@@ -379,7 +379,8 @@ const exportItem = (item: Preset) => {
 
   for (const key of keys) {
     if (key in data) {
-      delete data[key]
+      const { [key]: _, ...rest } = data
+      Object.assign(data, rest)
     }
   }
 

ui/app/pages/tasks.vue

@@ -394,7 +394,7 @@ const display_style = useStorage<string>("tasks_display_style", "cards")
 const isMobile = useMediaQuery({ maxWidth: 1024 })
 
 const tasks = ref<Array<task_item>>([])
-const task = ref<task_item | Object>({})
+const task = ref<task_item | Record<string, unknown>>({})
 const taskRef = ref<string>('')
 const toggleForm = ref<boolean>(false)
 const isLoading = ref<boolean>(true)
@@ -409,7 +409,7 @@ const table_container = ref(false)
 const reset_dialog = () => ({
   visible: false,
   title: 'Confirm Action',
-  confirm: (opts: any) => { },
+  confirm: (_opts: any) => { },
   message: '',
   html_message: '',
   options: [],
@@ -649,7 +649,7 @@ onMounted(async () => {
 const tryParse = (expression: string) => {
   try {
     return moment(CronExpressionParser.parse(expression).next().toISOString()).fromNow()
-  } catch (e) {
+  } catch {
     return "Invalid"
   }
 }
@@ -706,7 +706,7 @@ const runNow = async (item: task_item, mass: boolean = false) => {
     item.in_progress = true
   }
 
-  let data = {
+  const data = {
     url: item.url,
     preset: item.preset,
   } as task_item
@@ -754,7 +754,7 @@ const statusHandler = async (stream: string) => {
 const exportItem = async (item: task_item) => {
   const info = JSON.parse(JSON.stringify(item))
 
-  let data = {
+  const data = {
     name: info.name,
     url: info.url,
     preset: info.preset,
@@ -780,7 +780,7 @@ const exportItem = async (item: task_item) => {
 const get_tags = (name: string): Array<string> => {
   const regex = /\[(.*?)\]/g;
   const matches = name.match(regex);
-  return !matches ? [] : matches.map(tag => tag.replace(/[\[\]]/g, '').trim());
+  return !matches ? [] : matches.map(tag => tag.replace(/[[\]]/g, '').trim());
 }
 
 const remove_tags = (name: string): string => name.replace(/\[(.*?)\]/g, '').trim();

ui/app/stores/SocketStore.ts

@@ -1,6 +1,4 @@
-import { io } from "socket.io-client";
+import { io, type Socket as IOSocket, type SocketOptions, type ManagerOptions } from "socket.io-client"
-import type { Socket as IOSocket, SocketOptions } from "socket.io-client"
-import type { ManagerOptions } from "socket.io-client";
 import type { ConfigState } from "~/types/config";
 import type { StoreItem } from "~/types/store";
 
@@ -29,7 +27,7 @@ export const useSocketStore = defineStore('socket', () => {
   }
 
   const connect = () => {
-    let opts = {
+    const opts = {
       transports: ['websocket', 'polling'],
       withCredentials: true,
     } as Partial<ManagerOptions & SocketOptions>

ui/app/stores/StateStore.ts

@@ -22,7 +22,8 @@ export const useStateStore = defineStore('state', () => {
 
   const remove = (type: StateType, key: KeyType): void => {
     if (state[type][key]) {
-      delete state[type][key]
+      const { [key]: _, ...rest } = state[type]
+      state[type] = rest
     }
   }
 
@@ -45,7 +46,8 @@ export const useStateStore = defineStore('state', () => {
   const move = (fromType: StateType, toType: StateType, key: KeyType): void => {
     if (state[fromType][key]) {
       state[toType][key] = state[fromType][key]
-      delete state[fromType][key]
+      const { [key]: _, ...rest } = state[fromType]
+      state[fromType] = rest
     }
   }
 

ui/app/types/dl_fields.d.ts

@@ -20,7 +20,7 @@ type DLField = {
   icon?: string;
 
   /** The order of the field, used to sort the fields in the UI. */
-  order: number = 1;
+  order: number;
 
   /** The default value of the field, It's currently unused */
   value: string;

ui/app/types/sockets.d.ts

@@ -1,8 +1,8 @@
 export type Event = {
-  id: str
+  id: string
-  created_at: str
+  created_at: string
-  event: str
+  event: string
-  title: str | null = null
+  title: string | null
-  message: str | null = null
+  message: string | null
-  data: Any = { }
+  data: Record<string, unknown>
 }

ui/app/utils/embedable.ts

@@ -8,7 +8,7 @@ const sources: EmbedSource[] = [
   {
     name: 'youtube',
     url: 'https://www.youtube-nocookie.com/embed/{id}',
-    regex: /(?:https?:\/\/)?(?:www\.)?(?:youtube\.com\/(?:shorts\/|[^\/\n\s]+\/\S+\/|(?:v|e(?:mbed)?)\/|\S*?[?&]v=)|youtu\.be\/)(?<id>[a-zA-Z0-9_-]{11})/,
+    regex: /(?:https?:\/\/)?(?:www\.)?(?:youtube\.com\/(?:shorts\/|[^/\n\s]+\/\S+\/|(?:v|e(?:mbed)?)\/|\S*?[?&]v=)|youtu\.be\/)(?<id>[a-zA-Z0-9_-]{11})/,
   },
   {
     name: "instagram_post",

ui/app/utils/index.ts

@@ -234,6 +234,7 @@ const request = (url: string, options: RequestInit = {}): Promise<Response> => {
  * @returns A string without ANSI escape sequences.
  */
 const removeANSIColors = (text: string): string => {
+  // eslint-disable-next-line no-control-regex
   return text?.replace(/[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g, '') ?? text
 }
 
@@ -601,6 +602,7 @@ const sleep = (seconds: number): Promise<void> => new Promise(resolve => setTime
  *
  * @returns The result of the test function.
  */
+// eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
 const awaiter = async (test: Function, timeout_ms: number = 20 * 1000, frequency: number = 200) => {
   if (typeof (test) != "function") {
     throw new Error("test should be a function in awaiter(test, [timeout_ms], [frequency])")

ui/app/utils/ytdlp.test.ts

@@ -0,0 +1,238 @@
+import { describe, it, expect } from 'vitest'
+import { MatchFilterParser } from './ytdlp'
+
+function normalize(filters: string[]): Set<string> {
+  return new Set(filters.map(f => f.split("&").map(x => x.trim()).sort().join("&")));
+}
+
+describe("MatchFilterParser", () => {
+  it("handles simple AND", () => {
+    const parser = new MatchFilterParser("filesize>1000000 & duration<600");
+
+    expect(parser.evaluate({ filesize: 2_000_000, duration: 200 })).toBe(true);
+    expect(parser.evaluate({ filesize: 500_000, duration: 200 })).toBe(false);
+    expect(parser.evaluate({ filesize: 2_000_000, duration: 800 })).toBe(false);
+  });
+
+  it("handles OR", () => {
+    const parser = new MatchFilterParser("uploader='BBC' || uploader='NHK'");
+
+    expect(parser.evaluate({ uploader: "BBC" })).toBe(true);
+    expect(parser.evaluate({ uploader: "NHK" })).toBe(true);
+    expect(parser.evaluate({ uploader: "CNN" })).toBe(false);
+  });
+
+  it("handles grouping", () => {
+    const parser = new MatchFilterParser("(filesize>1000000 & duration<600) || uploader='BBC'");
+
+    expect(parser.evaluate({ filesize: 2_000_000, duration: 200 })).toBe(true);
+    expect(parser.evaluate({ uploader: "BBC" })).toBe(true);
+    expect(parser.evaluate({ filesize: 500_000, duration: 200, uploader: "CNN" })).toBe(false);
+  });
+
+  it("handles unary presence", () => {
+    expect(new MatchFilterParser("duration").evaluate({ duration: 100 })).toBe(true);
+    expect(new MatchFilterParser("duration").evaluate({})).toBe(false);
+    expect(new MatchFilterParser("!duration").evaluate({})).toBe(true);
+    expect(new MatchFilterParser("!duration").evaluate({ duration: 100 })).toBe(false);
+  });
+
+  it("parses duration with numeric values", () => {
+    // Use numeric seconds instead of unit formats for consistency
+    // 120 seconds = 2 minutes
+    expect(new MatchFilterParser("duration<120").evaluate({ duration: 30 })).toBe(true);
+    expect(new MatchFilterParser("duration<120").evaluate({ duration: 200 })).toBe(false);
+
+    // 90 seconds
+    expect(new MatchFilterParser("duration<90").evaluate({ duration: 30 })).toBe(true);
+    expect(new MatchFilterParser("duration<90").evaluate({ duration: 120 })).toBe(false);
+
+    // 3600 seconds = 1 hour
+    expect(new MatchFilterParser("duration<3600").evaluate({ duration: 3599 })).toBe(true);
+    expect(new MatchFilterParser("duration<3600").evaluate({ duration: 3700 })).toBe(false);
+  });
+
+  it("parses filesize with numeric values", () => {
+    // Use numeric bytes instead of unit formats for consistency
+    // 1MB = 1,000,000 bytes
+    expect(new MatchFilterParser("filesize>1000000").evaluate({ filesize: 2_000_000 })).toBe(true);
+    expect(new MatchFilterParser("filesize>1000000").evaluate({ filesize: 500_000 })).toBe(false);
+
+    // 1GiB = 1,073,741,824 bytes
+    expect(new MatchFilterParser("filesize>=1073741824").evaluate({ filesize: 2 ** 30 })).toBe(true);
+    expect(new MatchFilterParser("filesize>=1073741824").evaluate({ filesize: 1000000 })).toBe(false);
+  });
+
+  it("handles string operators", () => {
+    const d = { uploader: "BBC News Channel" };
+
+    // Test all string operators with positive cases
+    expect(new MatchFilterParser("uploader*='News'").evaluate(d)).toBe(true);  // contains
+    expect(new MatchFilterParser("uploader^='BBC'").evaluate(d)).toBe(true);   // starts with
+    expect(new MatchFilterParser("uploader$='Channel'").evaluate(d)).toBe(true); // ends with
+    expect(new MatchFilterParser("uploader~='News\\s+Channel'").evaluate(d)).toBe(true); // regex
+
+    // Test negative cases
+    expect(new MatchFilterParser("uploader*='CNN'").evaluate(d)).toBe(false);  // contains
+    expect(new MatchFilterParser("uploader^='CNN'").evaluate(d)).toBe(false);  // starts with
+    expect(new MatchFilterParser("uploader$='BBC'").evaluate(d)).toBe(false);  // ends with
+    expect(new MatchFilterParser("uploader~='News\\s+Network'").evaluate(d)).toBe(false); // regex
+  });
+
+  it("handles spaces around operators", () => {
+    const d = {
+      "channel_id": "UC-7oMv6E4Uz2tF51w5Sj49w",
+      "uploader": "BBC"
+    };
+
+    // Test with spaces around equals
+    expect(new MatchFilterParser("channel_id = 'UC-7oMv6E4Uz2tF51w5Sj49w'").evaluate(d)).toBe(true);
+    expect(new MatchFilterParser("channel_id = 'different-id'").evaluate(d)).toBe(false);
+
+    // Test with spaces in complex expressions
+    expect(new MatchFilterParser("channel_id = 'UC-7oMv6E4Uz2tF51w5Sj49w' & uploader = 'BBC'").evaluate(d)).toBe(true);
+    expect(new MatchFilterParser("channel_id = 'different-id' & uploader = 'BBC'").evaluate(d)).toBe(false);
+
+    // Test the specific failing case from the bug report
+    expect(new MatchFilterParser("channel_id = 'UCfmrcEdes7yDtEISGPM1T-A' & availability = subscriber_only").evaluate(d)).toBe(false);
+  });
+
+  it("reproduces original bug report", () => {
+    // Exact data from the original bug report
+    const testData = {
+      "age_limit": 0,
+      "comment_count": 6,
+      "channel_id": "UC-7oMv6E4Uz2tF51w5Sj49w",
+      "uploader_url": "https://www.youtube.com/@PlayFramePlus"
+    };
+
+    // This filter should return FALSE because:
+    // 1. channel_id doesn't match (UC-7oMv6E4Uz2tF51w5Sj49w vs UCfmrcEdes7yDtEISGPM1T-A)
+    // 2. availability key doesn't exist in the data
+    const filter = "channel_id = 'UCfmrcEdes7yDtEISGPM1T-A' & availability = subscriber_only";
+    expect(new MatchFilterParser(filter).evaluate(testData)).toBe(false);
+
+    // Individual parts should also be false
+    expect(new MatchFilterParser("channel_id = 'UCfmrcEdes7yDtEISGPM1T-A'").evaluate(testData)).toBe(false);
+    expect(new MatchFilterParser("availability = subscriber_only").evaluate(testData)).toBe(false);
+
+    // But the correct channel_id should match
+    expect(new MatchFilterParser("channel_id = 'UC-7oMv6E4Uz2tF51w5Sj49w'").evaluate(testData)).toBe(true);
+  });
+
+  it("tests OR operator precedence", () => {
+    // Test data for the examples
+    const testData = {
+      "age_limit": 0,
+      "fps": 120,
+      "like_count": 81,
+    };
+
+    // Case 1: (age_limit=0 & fps=120) || like_count=81
+    // This should evaluate as: (True & True) || True = True || True = True
+    const expr1 = "(age_limit=0 & fps=120) || like_count=81";
+    expect(new MatchFilterParser(expr1).evaluate(testData)).toBe(true);
+
+    // Case 2: age_limit=0 & fps=120 || like_count=81
+    // This evaluates left-to-right as: (age_limit=0 & fps=120) || like_count=81
+    // = (True & True) || True = True || True = True
+    const expr2 = "age_limit=0 & fps=120 || like_count=81";
+    expect(new MatchFilterParser(expr2).evaluate(testData)).toBe(true);
+
+    // Test with data that shows left-to-right evaluation
+    const testDataPartial = {
+      "age_limit": 0,
+      "fps": 60,  // Changed from 120 to make first AND false
+      "like_count": 81,
+    };
+
+    // Case 1 with partial data: (age_limit=0 & fps=120) || like_count=81
+    // This should be: (True & False) || True = False || True = True
+    expect(new MatchFilterParser(expr1).evaluate(testDataPartial)).toBe(true);
+
+    // Case 2 with partial data: age_limit=0 & fps=120 || like_count=81
+    // This evaluates as: (age_limit=0 & fps=120) || like_count=81 = (True & False) || True = False || True = True
+    expect(new MatchFilterParser(expr2).evaluate(testDataPartial)).toBe(true);
+
+    // Test case where the difference becomes clear
+    const testDataEdge = {
+      "age_limit": 1,  // Changed from 0 to make age_limit=0 false
+      "fps": 60,       // Changed from 120 to make fps=120 false
+      "like_count": 81,
+    };
+
+    // Case 1 with edge data: (age_limit=0 & fps=120) || like_count=81
+    // This should be: (False & False) || True = False || True = True
+    expect(new MatchFilterParser(expr1).evaluate(testDataEdge)).toBe(true);
+
+    // Case 2 with edge data: age_limit=0 & fps=120 || like_count=81
+    // This evaluates as: (age_limit=0 & fps=120) || like_count=81 = (False & False) || True = False || True = True
+    expect(new MatchFilterParser(expr2).evaluate(testDataEdge)).toBe(true);
+  });
+
+  it("tests complex OR precedence scenarios", () => {
+    // Test case where only the OR part is true
+    const testDataOrOnly = {
+      "age_limit": 1,   // False
+      "fps": 60,        // False (not 120)
+      "like_count": 81, // True
+    };
+
+    // Expression: a & b || c
+    // Evaluates left-to-right as: (a & b) || c = (False & False) || True = False || True = True
+    const expr = "age_limit=0 & fps=120 || like_count=81";
+    expect(new MatchFilterParser(expr).evaluate(testDataOrOnly)).toBe(true);
+
+    // Test case where only the AND part is true
+    const testDataAndOnly = {
+      "age_limit": 0,   // True
+      "fps": 120,       // True
+      "like_count": 50, // False (not 81)
+    };
+
+    // Expression: a & b || c
+    // Evaluates as: (a & b) || c = (True & True) || False = True || False = True
+    expect(new MatchFilterParser(expr).evaluate(testDataAndOnly)).toBe(true);
+
+    // Test case where everything is false except the OR part
+    const testDataOnlyOr = {
+      "age_limit": 1,   // False
+      "fps": 60,        // False
+      "like_count": 50, // False
+      "view_count": 1000, // True
+    };
+
+    // Test chained OR with AND: a & b || c || d
+    // Evaluates left-to-right as: ((a & b) || c) || d
+    const exprChain = "age_limit=0 & fps=120 || like_count=81 || view_count=1000";
+    expect(new MatchFilterParser(exprChain).evaluate(testDataOnlyOr)).toBe(true);
+  });
+
+  it("exports filters correctly", () => {
+    // Test simple AND expression
+    const simpleParser = new MatchFilterParser("filesize>1000000 & duration<600");
+    const simpleExported = simpleParser.export();
+    expect(simpleExported).toEqual(["filesize>1000000&duration<600"]);
+
+    // Test OR expression (should split into multiple filters)
+    const orParser = new MatchFilterParser("filesize>1000000 || uploader='BBC'");
+    const orExported = orParser.export();
+    expect(normalize(orExported)).toEqual(normalize(["filesize>1000000", "uploader='BBC'"]));
+
+    // Test complex expression with grouping
+    const complexParser = new MatchFilterParser("(filesize>1000000 & duration<600) || uploader='BBC'");
+    const complexExported = complexParser.export();
+    expect(normalize(complexExported)).toEqual(normalize(["filesize>1000000&duration<600", "uploader='BBC'"]));
+
+    // Verify exported filters work individually
+    const testData = { filesize: 2000000, duration: 300 };
+    for (const filter of complexExported) {
+      const filterParser = new MatchFilterParser(filter);
+      // At least one of the exported filters should match
+      if (filterParser.evaluate(testData)) {
+        expect(true).toBe(true); // Success if any filter matches
+        break;
+      }
+    }
+  });
+});

ui/app/utils/ytdlp.ts

@@ -1,176 +1,304 @@
 const NUMBER_RE = /\d+(?:\.\d+)?/;
 
-function match_str(filterStr: string, dct: Record<string, any>, incomplete: boolean | Set<string> = false): boolean {
-  if (!filterStr) {
-    return true;
-  }
-
-  if (/\s*&\s*$/.test(filterStr)) {
-    return false;
-  }
-
-  try {
-    const filterParts = filterStr
-      .split(/(?:(^|[^\\]))&/g)
-      .reduce((parts, part, index, array) => {
-        if (index % 2 === 0) {
-          parts.push((part + (array[index + 1] || '')).replace(/\\&/g, '&'));
-        }
-        return parts;
-      }, [] as string[]);
-
-    if (filterParts.some(fp => !fp.trim())) {
-      return false;
-    }
-
-    return filterParts.every(filterPart => _match_one(filterPart, dct, incomplete));
-  } catch (e) {
-    return false;
-  }
-}
-
 function lookup_unit_table(unitTable: Record<string, number>, s: string, strict = false): number | null {
   const numRe = strict ? NUMBER_RE : /\d+[,.]?\d*/;
-  const unitsRe = Object.keys(unitTable).map(u => u.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')).join('|');
+  const unitsRe = Object.keys(unitTable)
-  const re = new RegExp(`^(?<num>${numRe.source})\\s*(?<unit>${unitsRe})\\b`, strict ? '' : 'i');
+    .map(u => u.replace(/[.*+?^${}()|[\]\\]/g, "\\$&"))
+    .join("|");
+  const re = new RegExp(`^(?<num>${numRe.source})\\s*(?<unit>${unitsRe})\\b`, strict ? "" : "i");
 
   const m = s.match(re);
   if (!m?.groups?.num || !m.groups.unit) {
     return null;
-
   }
 
-  const numStr = m.groups.num.replace(',', '.');
+  const numStr = m.groups.num.replace(",", ".");
   const unit = m.groups.unit;
   const mult = unitTable[unit];
-  if (undefined === mult) {
+  if (undefined === mult) return null;
-    return null;
-  }
 
   return Math.round(parseFloat(numStr) * mult);
 }
 
 function parse_filesize(s: string | null): number | null {
   if (!s) return null;
-
   const UNIT_TABLE: Record<string, number> = {
-    B: 1, bytes: 1, b: 1,
+    B: 1,
+    b: 1,
+    bytes: 1,
     KiB: 1024, KB: 1000, kB: 1024, kb: 1000, kilobytes: 1000, kibibytes: 1024,
     MiB: 1024 ** 2, MB: 1000 ** 2, megabytes: 1000 ** 2, mebibytes: 1024 ** 2,
     GiB: 1024 ** 3, GB: 1000 ** 3, gigabytes: 1000 ** 3, gibibytes: 1024 ** 3,
     TiB: 1024 ** 4, TB: 1000 ** 4, terabytes: 1000 ** 4, tebibytes: 1024 ** 4,
+    PiB: 1024 ** 5, PB: 1000 ** 5, petabytes: 1000 ** 5, pebibytes: 1024 ** 5,
   };
-
   return lookup_unit_table(UNIT_TABLE, s);
 }
 
 function parse_duration(s: string): number | null {
-  if (!s.trim()) {
+  if (!s?.trim()) return null;
-    return null;
+
+  // Support ISO-ish short forms: "2m", "10s", "1h", "1d"
+  const simpleRe = /^(?<num>\d+(?:\.\d+)?)(?<unit>[smhd])$/i;
+  const sm = s.match(simpleRe);
+  if (sm?.groups?.num && sm.groups.unit) {
+    const num = parseFloat(sm.groups.num);
+    switch (sm.groups.unit.toLowerCase()) {
+      case "s": return num;
+      case "m": return num * 60;
+      case "h": return num * 3600;
+      case "d": return num * 86400;
+    }
   }
 
-  const durationRe = /^(?:(?:(?<days>\d+):)?(?<hours>\d+):)?(?<mins>\d+):(?<secs>\d{1,2})(?<ms>[.:]\d+)?Z?$/;
+  // Support hh:mm:ss[.ms]
-  const m = s.match(durationRe);
+  const hmsRe = /^(?:(?:(?<days>\d+):)?(?<hours>\d+):)?(?<mins>\d+):(?<secs>\d{1,2})(?<ms>[.:]\d+)?Z?$/;
-  if (!m?.groups) {
+  const m = s.match(hmsRe);
-    return null;
+  if (m?.groups) {
+    const { days, hours, mins, secs, ms } = m.groups;
+    return (
+      (parseFloat(days ?? "0") * 86400) +
+      (parseFloat(hours ?? "0") * 3600) +
+      (parseFloat(mins ?? "0") * 60) +
+      parseFloat(secs ?? "0") +
+      parseFloat((ms ?? "0").replace(":", "."))
+    );
   }
 
-  const { days, hours, mins, secs, ms } = m.groups;
+  return null;
-
-  return (
-    (parseFloat(days ?? '0') * 86400) +
-    (parseFloat(hours ?? '0') * 3600) +
-    (parseFloat(mins ?? '0') * 60) + parseFloat(secs ?? '0') + parseFloat((ms ?? '0').replace(':', '.'))
-  );
 }
 
-function _match_one(filterPart: string, dct: Record<string, any>, incomplete: boolean | Set<string>): boolean {
+
+// ---------- Match One ----------
+function _match_one(filterPart: string, dct: Record<string, any>): boolean {
   const STRING_OPERATORS: Record<string, (a: string, b: string) => boolean> = {
-    '*=': (a, b) => a.includes(b),
+    "*=": (a, b) => a.includes(b),
-    '^=': (a, b) => a.startsWith(b),
+    "^=": (a, b) => a.startsWith(b),
-    '$=': (a, b) => a.endsWith(b),
+    "$=": (a, b) => a.endsWith(b),
-    '~=': (a, b) => new RegExp(b).test(a),
+    "~=": (a, b) => new RegExp(b).test(a),
   };
-
   const COMPARISON_OPERATORS: Record<string, (a: any, b: any) => boolean> = {
-    '*=': STRING_OPERATORS['*=']!,
+    "*=": STRING_OPERATORS["*="]!,
-    '^=': STRING_OPERATORS['^=']!,
+    "^=": STRING_OPERATORS["^="]!,
-    '$=': STRING_OPERATORS['$=']!,
+    "$=": STRING_OPERATORS["$="]!,
-    '~=': STRING_OPERATORS['~=']!,
+    "~=": STRING_OPERATORS["~="]!,
-    '<=': (a, b) => a <= b,
+    "<=": (a, b) => a <= b,
-    '<': (a, b) => a < b,
+    "<": (a, b) => a < b,
-    '>=': (a, b) => a >= b,
+    ">=": (a, b) => a >= b,
-    '>': (a, b) => a > b,
+    ">": (a, b) => a > b,
-    '=': (a, b) => a == b,
+    "=": (a, b) => a == b,
+  };
+  const UNARY_OPERATORS: Record<string, (v: any) => boolean> = {
+    "": v => (typeof v === "boolean" ? v === true : v != null),
+    "!": v => (typeof v === "boolean" ? v === false : v == null),
   };
 
-  const isIncomplete = typeof incomplete === 'boolean' ? (_: string) => incomplete : (k: string) => incomplete.has(k);
+  const cmpOps = Object.keys(COMPARISON_OPERATORS)
+    .map(op => op.replace(/([.*+?^${}()|[\]\\])/g, "\\$1"))
+    .join("|");
 
-  const cmpOps = Object.keys(COMPARISON_OPERATORS).map(op => op.replace(/([.*+?^${}()|\[\]\\])/g, '\\$1')).join('|');
+  const operatorRe = new RegExp(
-  const operatorRe = new RegExp(`^(?<key>[a-z_]+)\\s*(?<negation>!\\s*)?(?<op>${cmpOps})(?<noneInclusive>\\s*\\?)?\\s*(?:(?<quote>["'])(?<quoted>.+?)(?:\\k<quote>)|(?<plain>.+))$`);
+    `^(?<key>[a-z_]+)\\s*(?<negation>!\\s*)?(?<op>${cmpOps})(?<noneInclusive>\\s*\\?)?\\s*(?:(?<quote>["'])(?<quoted>.+?)(?:\\k<quote>)|(?<plain>.+?))?$`
+  );
 
   const m = filterPart.trim().match(operatorRe);
   if (m?.groups) {
-    const { key, negation, op, noneInclusive, quote, quoted, plain } = m.groups;
+    const { key, negation, op, quote, quoted, plain } = m.groups;
     const unnegatedOp = COMPARISON_OPERATORS[op!];
-    if (!unnegatedOp) {
+    if (!unnegatedOp) throw new Error(`Invalid operator '${op}'`);
-      throw new Error(`Invalid operator '${op}'`);
+
+    // Handle incomplete expressions (missing value)
+    const value = quoted ?? plain ?? "";
+    if (!value && op !== "=" && op !== "!") {
+      return false; // Incomplete non-equality expression
     }
 
     const opFn = negation ? (a: any, b: any) => !unnegatedOp(a, b) : unnegatedOp;
-
+    let processedValue = value;
-    let value = quoted ?? plain ?? '';
+    if (quote) processedValue = processedValue.replace(new RegExp(`\\\\${quote}`, "g"), quote);
-
-    if (quote) {
-      value = value.replace(new RegExp(`\\\\${quote}`, 'g'), quote);
-    }
-
-    if (!(key! in dct)) {
-      return isIncomplete(key!) || Boolean(noneInclusive);
-    }
 
     const actual = dct[key!];
-    let numeric: number | null = null;
+    if (actual === undefined || actual === null) {
+      return false;
+    }
 
-    if (typeof actual === 'number') {
+    let numeric: number | null = null;
-      numeric = Number(value);
+    // Try to convert comparison value to numeric first
-      if (Number.isNaN(numeric)) {
+    numeric = Number(processedValue);
-        numeric = parse_filesize(value) ?? parse_filesize(`${value}B`) ?? parse_duration(value);
+    if (Number.isNaN(numeric)) {
+      numeric = parse_filesize(processedValue) ?? parse_filesize(`${processedValue}B`) ?? parse_duration(processedValue);
+    }
+
+    // Also try to convert actual value to numeric if we have a numeric comparison
+    let finalActual = actual;
+    if (numeric !== null && typeof actual === "string") {
+      const numericActual = Number(actual);
+      if (!Number.isNaN(numericActual)) {
+        finalActual = numericActual;
+      } else {
+        const parsedActual = parse_filesize(actual) ?? parse_duration(actual);
+        if (parsedActual !== null) {
+          finalActual = parsedActual;
+        }
       }
     }
 
     if (numeric !== null && op! in STRING_OPERATORS) {
       throw new Error(`Operator ${op} only supports string values!`);
     }
-
+    return opFn(finalActual, numeric !== null ? numeric : processedValue);
-    return opFn(actual, numeric !== null ? numeric : value);
   }
 
-  const UNARY_OPERATORS: Record<string, (v: any) => boolean> = {
+  // unary operator
-    '': v => typeof v === 'boolean' ? v === true : v != null,
+  const unaryRe = /^(?<op>!?)\s*(?<key>[a-z_]+)$/;
-    '!': v => typeof v === 'boolean' ? v === false : v == null,
-  };
-
-  const unaryRe = new RegExp(`^(?<op>!?)\\s*(?<key>[a-z_]+)$`);
   const mu = filterPart.trim().match(unaryRe);
   if (mu?.groups) {
     const { op, key } = mu.groups;
-
-    if (!(key! in dct)) {
-      return isIncomplete(key!);
-    }
-
     const actual = dct[key!];
-    const unaryOp = UNARY_OPERATORS[op!];
+    return UNARY_OPERATORS[op!]!(actual);
-
-    if (!unaryOp) {
-      throw new Error(`Invalid unary operator '${op}'`);
-    }
-
-    return unaryOp(actual);
   }
 
   throw new Error(`Invalid filter part '${filterPart}'`);
 }
 
-export { match_str, lookup_unit_table, parse_filesize, parse_duration, _match_one }
+// ---------- Parser ----------
+type Node = ["ATOM", string] | ["AND", Node, Node] | ["OR", Node, Node];
+
+class MatchFilterParser {
+  expr: string;
+  tokens: [string, string][];
+  pos: number;
+  ast: Node;
+
+  constructor(expr: string) {
+    this.expr = expr;
+    this.tokens = this._tokenize(expr);
+    this.pos = 0;
+    this.ast = this._parseOr();
+  }
+
+  static run(expr: string, dct: Record<string, any> = {}): boolean {
+    return new MatchFilterParser(expr).evaluate(dct);
+  }
+
+  evaluate(dct: Record<string, any>): boolean {
+    return this._eval(this.ast, dct);
+  }
+
+  export(): string[] {
+    return this._export(this.ast).map(parts => parts.join("&"));
+  }
+
+  private _tokenize(expr: string): [string, string][] {
+    // First, let's normalize spaces around operators to make parsing easier
+    // Replace spaced operators with non-spaced ones
+    let normalizedExpr = expr;
+    const operators = ["<=", ">=", "<", ">", "\\*=", "\\^=", "\\$=", "~=", "="];
+    for (const op of operators) {
+      // Replace "key op value" with "keyopvalue" (removing extra spaces)
+      const pattern = new RegExp(`([a-z_]+)\\s*(!?)\\s*(${op})\\s*`, "g");
+      normalizedExpr = normalizedExpr.replace(pattern, "$1$2$3");
+    }
+
+    const tokenSpec: [RegExp, string | null][] = [
+      [/\|\|/, "OR"],
+      [/&/, "AND"],
+      [/\(/, "LPAREN"],
+      [/\)/, "RPAREN"],
+      [/[^\s&|()]+/, "ATOM"],
+      [/\s+/, null],
+    ];
+    const regex = new RegExp(
+      tokenSpec.map(([pat, _name], i) => `(?<T${i}>${pat.source})`).join("|"),
+      "g"
+    );
+    const tokens: [string, string][] = [];
+    let m: RegExpExecArray | null;
+    while ((m = regex.exec(normalizedExpr)) !== null) {
+      for (let i = 0; i < tokenSpec.length; i++) {
+        if (m.groups?.[`T${i}`]) {
+          const tokenSpecEntry = tokenSpec[i];
+          if (tokenSpecEntry) {
+            const kind = tokenSpecEntry[1];
+            if (kind) tokens.push([kind, m[0]]);
+          }
+          break;
+        }
+      }
+    }
+    return tokens;
+  }
+
+  private _accept(kind: string): boolean {
+    if (this.pos < this.tokens.length && this.tokens[this.pos]?.[0] === kind) {
+      this.pos++;
+      return true;
+    }
+    return false;
+  }
+
+  private _expect(kind: string): [string, string] {
+    if (this.pos < this.tokens.length && this.tokens[this.pos]?.[0] === kind) {
+      return this.tokens[this.pos++]!;
+    }
+    throw new SyntaxError(`Expected ${kind}`);
+  }
+
+  private _parseOr(): Node {
+    let left = this._parseAnd();
+    while (this._accept("OR")) {
+      const right = this._parseAnd();
+      left = ["OR", left, right];
+    }
+    return left;
+  }
+
+  private _parseAnd(): Node {
+    let left = this._parseAtom();
+    while (this._accept("AND")) {
+      const right = this._parseAtom();
+      left = ["AND", left, right];
+    }
+    return left;
+  }
+
+  private _parseAtom(): Node {
+    if (this._accept("LPAREN")) {
+      const node = this._parseOr();
+      this._expect("RPAREN");
+      return node;
+    }
+    const tok = this._expect("ATOM");
+    return ["ATOM", tok[1].trim()];
+  }
+
+  private _eval(node: Node, dct: Record<string, any>): boolean {
+    if (node[0] === "ATOM") {
+      return _match_one(node[1], dct);
+    }
+    if (node[0] === "AND") {
+      return this._eval(node[1], dct) && this._eval(node[2], dct);
+    }
+    if (node[0] === "OR") {
+      return this._eval(node[1], dct) || this._eval(node[2], dct);
+    }
+    throw new Error("Invalid AST node " + node[0]);
+  }
+
+  private _export(node: Node): string[][] {
+    if (node[0] === "ATOM") return [[node[1]]];
+    if (node[0] === "AND") {
+      const left = this._export(node[1]);
+      const right = this._export(node[2]);
+      return left.flatMap(l => right.map(r => [...l, ...r]));
+    }
+    if (node[0] === "OR") {
+      return [...this._export(node[1]), ...this._export(node[2])];
+    }
+    throw new Error("Invalid AST node " + node[0]);
+  }
+}
+
+const match_str = (expr: string, dct: Record<string, any>): boolean => MatchFilterParser.run(expr, dct)
+
+export { MatchFilterParser, match_str }

ui/eslint.config.js

@@ -0,0 +1,54 @@
+// eslint.config.js
+// @ts-check
+import withNuxt from './.nuxt/eslint.config.mjs'
+import vueParser from 'vue-eslint-parser'
+import tsParser from '@typescript-eslint/parser'
+
+export default withNuxt(
+  {
+    languageOptions: {
+      parser: vueParser,
+      parserOptions: {
+        parser: tsParser,
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        extraFileExtensions: ['.vue']
+      }
+    },
+    rules: {
+      'vue/valid-template-root': 'off',
+      'vue/no-multiple-template-root': 'off',
+      'vue/multi-word-component-names': 'off',
+
+      'vue/no-undef-components': 'off',
+      'vue/no-undef-properties': 'off',
+      'vue/script-setup-uses-vars': 'off',
+
+      'vue/html-quotes': ['warn', 'double'],
+      'vue/mustache-interpolation-spacing': ['warn', 'always'],
+      'vue/v-bind-style': ['warn', 'shorthand'],
+      'vue/v-on-style': ['warn', 'shorthand'],
+      'vue/attributes-order': 'off',
+      'vue/html-self-closing': 'off',
+      'vue/first-attribute-linebreak': 'off',
+      'vue/attribute-hyphenation': 'off',
+      'vue/v-on-event-hyphenation': 'off',
+      'vue/block-order': 'off',
+      'vue/prop-name-casing': 'off',
+      'vue/no-v-html': 'off',
+
+      'no-empty': ['error', { allowEmptyCatch: true }],
+      'no-console': 'off',
+      'no-debugger': 'warn',
+      'no-alert': 'warn',
+
+      'no-undef': 'off',
+      'no-unused-vars': 'off',
+      'vue/no-unused-vars': 'off',
+      "@typescript-eslint/no-explicit-any": 'off',
+    }
+  },
+  {
+    files: ['**/*.vue'],
+    rules: {}
+  })

ui/nuxt.config.ts

@@ -14,8 +14,7 @@ try {
     }
   }
 }
-catch (e) {
+catch { }
-}
 
 export default defineNuxtConfig({
   ssr: false,
@@ -60,6 +59,7 @@ export default defineNuxtConfig({
     '@pinia/nuxt',
     '@vueuse/nuxt',
     'floating-vue/nuxt',
+    process.env.NODE_ENV === 'development' ? '@nuxt/eslint' : '',
   ],
 
   nitro: {
@@ -76,6 +76,6 @@ export default defineNuxtConfig({
   telemetry: false,
   compatibilityDate: "2025-08-03",
   experimental: {
-    checkOutdatedBuildInterval: 1000 * 60 * 60,
+    checkOutdatedBuildInterval: 1000 * 60 * 10,
   }
 })

ui/package.json

@@ -7,7 +7,14 @@
     "dev": "nuxt dev --host",
     "generate": "nuxt generate",
     "preview": "nuxt preview",
-    "postinstall": "nuxt prepare"
+    "postinstall": "nuxt prepare",
+    "typecheck": "nuxt typecheck",
+    "lint": "eslint .",
+    "lint:ci": "eslint . --quiet",
+    "lint:fix": "eslint . --fix",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "test:ci": "vitest run --silent --reporter=dot"
   },
   "web-types": "./web-types.json",
   "dependencies": {
@@ -17,9 +24,9 @@
     "@xterm/addon-fit": "^0.10.0",
     "@xterm/xterm": "^5.5.0",
     "cron-parser": "^5.3.1",
-    "cronstrue": "^3.2.0",
+    "cronstrue": "^3.3.0",
     "floating-vue": "^5.2.2",
-    "hls.js": "^1.6.11",
+    "hls.js": "^1.6.12",
     "moment": "^2.30.1",
     "nuxt": "^4.1.1",
     "pinia": "^3.0.3",
@@ -39,5 +46,15 @@
     "strip-ansi": "7.1.0",
     "ansi-styles": "6.2.0",
     "ansi-regex": "6.2.0"
+  },
+  "devDependencies": {
+    "@nuxt/eslint": "^1.9.0",
+    "@nuxt/eslint-config": "^1.9.0",
+    "@typescript-eslint/parser": "^8.43.0",
+    "eslint": "^9.35.0",
+    "typescript": "^5.9.2",
+    "vitest": "^3.2.4",
+    "vue-eslint-parser": "^10.2.0",
+    "vue-tsc": "^3.0.6"
   }
 }

uv.lock

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+[[package]]
+name = "iniconfig"
+version = "2.1.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/f2/97/ebf4da567aa6827c909642694d71c9fcf53e5b504f2d96afea02718862f3/iniconfig-2.1.0.tar.gz", hash = "sha256:3abbd2e30b36733fee78f9c7f7308f2d0050e88f0087fd25c2645f63c773e1c7", size = 4793 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/2c/e1/e6716421ea10d38022b952c159d5161ca1193197fb744506875fbb87ea7b/iniconfig-2.1.0-py3-none-any.whl", hash = "sha256:9deba5723312380e77435581c6bf4935c94cbfab9b1ed33ef8d238ea168eb760", size = 6050 },
+]
+
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 name = "macholib"
 version = "1.16.3"
@@ -765,6 +774,15 @@ wheels = [
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 ]
 
+[[package]]
+name = "pluggy"
+version = "1.6.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/f9/e2/3e91f31a7d2b083fe6ef3fa267035b518369d9511ffab804f839851d2779/pluggy-1.6.0.tar.gz", hash = "sha256:7dcc130b76258d33b90f61b658791dede3486c3e6bfb003ee5c9bfb396dd22f3", size = 69412 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/54/20/4d324d65cc6d9205fabedc306948156824eb9f0ee1633355a8f7ec5c66bf/pluggy-1.6.0-py3-none-any.whl", hash = "sha256:e920276dd6813095e9377c0bc5566d94c932c33b27a3e3945d8389c374dd4746", size = 20538 },
+]
+
 [[package]]
 name = "propcache"
 version = "0.3.2"
@@ -877,6 +895,15 @@ wheels = [
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 ]
 
+[[package]]
+name = "pygments"
+version = "2.19.2"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/b0/77/a5b8c569bf593b0140bde72ea885a803b82086995367bf2037de0159d924/pygments-2.19.2.tar.gz", hash = "sha256:636cb2477cec7f8952536970bc533bc43743542f70392ae026374600add5b887", size = 4968631 }
+wheels = [
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+]
+
 [[package]]
 name = "pyinstaller"
 version = "6.15.0"
@@ -998,6 +1025,34 @@ wheels = [
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+[[package]]
+name = "pytest"
+version = "8.4.2"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "colorama", marker = "sys_platform == 'win32'" },
+    { name = "iniconfig" },
+    { name = "packaging" },
+    { name = "pluggy" },
+    { name = "pygments" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/a3/5c/00a0e072241553e1a7496d638deababa67c5058571567b92a7eaa258397c/pytest-8.4.2.tar.gz", hash = "sha256:86c0d0b93306b961d58d62a4db4879f27fe25513d4b969df351abdddb3c30e01", size = 1519618 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/a8/a4/20da314d277121d6534b3a980b29035dcd51e6744bd79075a6ce8fa4eb8d/pytest-8.4.2-py3-none-any.whl", hash = "sha256:872f880de3fc3a5bdc88a11b39c9710c3497a547cfa9320bc3c5e62fbf272e79", size = 365750 },
+]
+
+[[package]]
+name = "pytest-asyncio"
+version = "1.1.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "pytest" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/4e/51/f8794af39eeb870e87a8c8068642fc07bce0c854d6865d7dd0f2a9d338c2/pytest_asyncio-1.1.0.tar.gz", hash = "sha256:796aa822981e01b68c12e4827b8697108f7205020f24b5793b3c41555dab68ea", size = 46652 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/c7/9d/bf86eddabf8c6c9cb1ea9a869d6873b46f105a5d292d3a6f7071f5b07935/pytest_asyncio-1.1.0-py3-none-any.whl", hash = "sha256:5fe2d69607b0bd75c656d1211f969cadba035030156745ee09e7d71740e58ecf", size = 15157 },
+]
+
 [[package]]
 name = "python-dateutil"
 version = "2.9.0.post0"
@@ -1207,6 +1262,32 @@ wheels = [
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+[[package]]
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+wheels = [
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+]
+
 [[package]]
 name = "setuptools"
 version = "80.9.0"
@@ -1430,6 +1511,13 @@ installer = [
     { name = "pyinstaller" },
 ]
 
+[package.dev-dependencies]
+dev = [
+    { name = "pytest" },
+    { name = "pytest-asyncio" },
+    { name = "ruff" },
+]
+
 [package.metadata]
 requires-dist = [
     { name = "aiocron", specifier = ">=1.8" },
@@ -1466,6 +1554,13 @@ requires-dist = [
 ]
 provides-extras = ["installer"]
 
+[package.metadata.requires-dev]
+dev = [
+    { name = "pytest", specifier = ">=8.4.2" },
+    { name = "pytest-asyncio", specifier = ">=1.1.0" },
+    { name = "ruff", specifier = ">=0.13.0" },
+]
+
 [[package]]
 name = "zipstream-ng"
 version = "1.9.0"