ytptube/app/library/Notifications.py

531 lines
18 KiB
Python

import asyncio
import json
import logging
import traceback
from collections.abc import Awaitable
from dataclasses import dataclass, field
from pathlib import Path
from typing import Any
import httpx
from aiohttp import web
from .ag_utils import ag
from .BackgroundWorker import BackgroundWorker
from .config import Config
from .encoder import Encoder
from .Events import Event, EventBus, Events
from .ItemDTO import Item, ItemDTO
from .Presets import Preset, Presets
from .Singleton import Singleton
from .Utils import validate_uuid
LOG = logging.getLogger("notifications")
@dataclass(kw_only=True)
class TargetRequestHeader:
"""Request header details for a notification target."""
key: str
value: str
def serialize(self) -> dict:
return {"key": self.key, "value": self.value}
def json(self) -> str:
return Encoder().encode(self.serialize())
def get(self, key: str, default: Any = None) -> Any:
return self.serialize().get(key, default)
@dataclass(kw_only=True)
class TargetRequest:
"""Request details for a notification target."""
type: str
method: str
url: str
headers: list[TargetRequestHeader] = field(default_factory=list)
data_key: str = "data"
def serialize(self) -> dict:
return {
"type": self.type,
"method": self.method,
"url": self.url,
"data_key": self.data_key,
"headers": [h.serialize() for h in self.headers],
}
def json(self) -> str:
return Encoder().encode(self.serialize())
def get(self, key: str, default: Any = None) -> Any:
return ag(self.serialize(), key, default)
@dataclass(kw_only=True)
class Target:
"""Notification target details."""
id: str
name: str
on: list[str] = field(default_factory=list)
presets: list[str] = field(default_factory=list)
request: TargetRequest
def serialize(self) -> dict:
return {
"id": self.id,
"name": self.name,
"on": self.on,
"presets": self.presets,
"request": self.request.serialize(),
}
def json(self) -> str:
return Encoder().encode(self.serialize())
def get(self, key: str, default: Any = None) -> Any:
return self.serialize().get(key, default)
class NotificationEvents:
TEST: str = Events.TEST
ITEM_ADDED: str = Events.ITEM_ADDED
ITEM_COMPLETED: str = Events.ITEM_COMPLETED
ITEM_CANCELLED: str = Events.ITEM_CANCELLED
ITEM_DELETED: str = Events.ITEM_DELETED
ITEM_PAUSED: str = Events.ITEM_PAUSED
ITEM_RESUMED: str = Events.ITEM_RESUMED
ITEM_MOVED: str = Events.ITEM_MOVED
PAUSED: str = Events.PAUSED
RESUMED: str = Events.RESUMED
LOG_INFO: str = Events.LOG_INFO
LOG_SUCCESS: str = Events.LOG_SUCCESS
LOG_WARNING: str = Events.LOG_WARNING
LOG_ERROR: str = Events.LOG_ERROR
TASK_DISPATCHED: str = Events.TASK_DISPATCHED
@staticmethod
def get_events() -> dict[str, str]:
return {k: v for k, v in vars(NotificationEvents).items() if not k.startswith("__") and not callable(v)}
def events() -> list:
return [
getattr(NotificationEvents, ev)
for ev in dir(NotificationEvents)
if not ev.startswith("_") and not callable(getattr(NotificationEvents, ev))
]
@staticmethod
def is_valid(event: str) -> bool:
return event in NotificationEvents.get_events().values()
class Notification(metaclass=Singleton):
def __init__(
self,
file: str | None = None,
client: httpx.AsyncClient | None = None,
encoder: Encoder | None = None,
config: Config | None = None,
background_worker: BackgroundWorker | None = None,
):
self._targets: list[Target] = []
"Notification targets to send events to."
config: Config = config or Config.get_instance()
self._debug: bool = config.debug
"Debug mode."
self._file: Path = Path(file) if file else Path(config.config_path).joinpath("notifications.json")
"File to store notification targets."
self._client: httpx.AsyncClient = client or httpx.AsyncClient()
"HTTP client to send requests."
self._encoder: Encoder = encoder or Encoder()
"Encoder to encode data."
self._version: str = config.app_version
"Application version."
self._offload: BackgroundWorker = background_worker or BackgroundWorker.get_instance()
"Background worker to offload tasks to."
if self._file.exists() and "600" != self._file.stat().st_mode:
try:
self._file.chmod(0o600)
except Exception:
pass
@staticmethod
def get_instance(
file: str | None = None,
client: httpx.AsyncClient | None = None,
encoder: Encoder | None = None,
config: Config | None = None,
background_worker: BackgroundWorker | None = None,
) -> "Notification":
"""
Get the instance of the class.
"""
return Notification(
file=file, client=client, encoder=encoder, config=config, background_worker=background_worker
)
def attach(self, _: web.Application):
"""
Attach the class to the application.
Args:
_ (web.Application): The aiohttp application.
"""
self.load()
EventBus.get_instance().subscribe(NotificationEvents.events(), self.emit, f"{__class__.__name__}.emit")
def get_targets(self) -> list[Target]:
"""Get the list of notification targets."""
return self._targets
def clear(self) -> "Notification":
"""Clear the list of notification targets."""
self._targets.clear()
return self
def save(self, targets: list[Target]) -> "Notification":
"""
Save notification targets to the file.
Args:
targets (list[Target]|None): The list of targets to save.
Returns:
Notification: The Notification instance.
"""
try:
self._file.write_text(json.dumps([t.serialize() for t in targets], indent=4))
LOG.info(f"Updated '{self._file}'.")
except Exception as e:
LOG.exception(e)
LOG.error(f"Error saving '{self._file}'. '{e!s}'")
return self
def load(self) -> "Notification":
"""Load or reload notification targets from the file."""
if len(self._targets) > 0:
self.clear()
if not self._file.exists() or self._file.stat().st_size < 1:
return self
targets: list = []
try:
LOG.info(f"Loading '{self._file}'.")
targets = json.loads(self._file.read_text())
except Exception as e:
LOG.error(f"Error loading '{self._file}'. '{e!s}'")
for target in targets:
try:
try:
Notification.validate(target)
target: Target = self.make_target(target)
except ValueError as e:
name = target.get("name") or target.get("id") or target.get("request", {}).get("url") or "unknown"
LOG.error(f"Invalid notification target '{name}'. '{e!s}'")
continue
self._targets.append(target)
LOG.info(
f"Send '{target.request.type}' request on '{', '.join(target.on) if len(target.on) > 0 else 'all events'}' to '{target.name}'."
)
except Exception as e:
LOG.error(f"Error loading notification target '{target}'. '{e!s}'")
return self
def make_target(self, target: dict) -> Target:
"""
Make a notification target from a dictionary.
Args:
target (dict): The target details.
Returns:
Target: The notification target.
"""
return Target(
id=target.get("id"),
name=target.get("name"),
on=target.get("on", []),
presets=target.get("presets", []),
request=TargetRequest(
type=target.get("request", {}).get("type", "json"),
method=target.get("request", {}).get("method", "POST"),
url=target.get("request", {}).get("url"),
data_key=target.get("request", {}).get("data_key", "data"),
headers=[
TargetRequestHeader(
key=str(h.get("key", "")).strip(),
value=str(h.get("value", "")).strip(),
)
for h in target.get("request", {}).get("headers", [])
],
),
)
@staticmethod
def validate(target: Target | dict) -> bool:
"""
Validate a notification target.
Args:
target (Target|dict): The target to validate.
Returns:
bool: True if the target is valid, False otherwise.
"""
if not isinstance(target, dict):
target = target.serialize()
if "id" not in target or validate_uuid(target["id"], version=4) is False:
msg = "Invalid notification target. No ID found."
raise ValueError(msg)
if "name" not in target:
msg = "Invalid notification target. No name found."
raise ValueError(msg)
if "request" not in target:
msg = "Invalid notification target. No request details found."
raise ValueError(msg)
if "url" not in target["request"]:
msg = "Invalid notification target. No URL found."
raise ValueError(msg)
if "data_key" not in target["request"]:
target["request"]["data_key"] = "data"
if "method" in target["request"] and target["request"]["method"].upper() not in ["POST", "PUT"]:
msg = "Invalid notification target. Invalid method found."
raise ValueError(msg)
if "type" in target["request"] and target["request"]["type"].lower() not in ["json", "form"]:
msg = "Invalid notification target. Invalid type found."
raise ValueError(msg)
if "on" in target:
if not isinstance(target["on"], list):
msg = "Invalid notification target. Invalid 'on' event list found."
raise ValueError(msg)
removed_events: list = []
all_events: dict[str, str] = NotificationEvents.get_events().values()
for e in target["on"]:
if e not in all_events:
removed_events.append(e)
target["on"].remove(e)
continue
if len(removed_events) > 0 and len(target["on"]) < 1:
msg: str = f"Invalid notification target. Invalid events '{', '.join(removed_events)}' found."
raise ValueError(msg)
if "presets" in target:
if not isinstance(target["presets"], list):
msg = "Invalid notification target. Invalid 'presets' list found."
raise ValueError(msg)
removed_presets: list = []
all_presets: list[Preset] = Presets.get_instance().get_all()
for p in target["presets"]:
if p not in [ap.name for ap in all_presets]:
removed_presets.append(p)
target["presets"].remove(p)
continue
if len(removed_presets) > 0 and len(target["presets"]) < 1:
msg: str = f"Invalid notification target. Invalid presets '{', '.join(removed_presets)}' found."
raise ValueError(msg)
if "headers" in target["request"]:
if not isinstance(target["request"]["headers"], list):
msg = "Invalid notification target. Invalid headers list found."
raise ValueError(msg)
for h in target["request"]["headers"]:
if "key" not in h:
msg = "Invalid notification target. No header key found."
raise ValueError(msg)
if "value" not in h:
msg = "Invalid notification target. No header value found."
raise ValueError(msg)
return True
async def send(self, ev: Event, wait: bool = True) -> list[dict] | Awaitable[list[dict]]:
if len(self._targets) < 1:
return []
if not isinstance(ev.data, ItemDTO) and not isinstance(ev.data, dict):
LOG.debug(f"Received invalid item type '{type(ev.data)}' with event '{ev.event}'.")
return []
tasks = []
apprise_targets: list[Target] = []
for target in self._targets:
if len(target.on) > 0 and ev.event not in target.on and "test" != ev.event:
continue
if "test" != ev.event and not self._check_preset(target, ev):
continue
if not target.request.url.startswith("http"):
apprise_targets.append(target)
else:
tasks.append(self._send(target, ev))
if len(apprise_targets) > 0:
tasks.append(self._apprise(apprise_targets, ev))
if wait:
return await asyncio.gather(*tasks)
return tasks
def _check_preset(self, target: Target, ev: Event) -> bool:
if len(target.presets) < 1:
return True
if not isinstance(ev.data, (Item, ItemDTO, dict)):
return False
preset_name: str | None = None
if isinstance(ev.data, Item):
preset_name = ev.data.preset
if isinstance(ev.data, ItemDTO):
preset_name = ev.data.preset
if isinstance(ev.data, dict):
preset_name = ev.data.get("preset", None)
if not preset_name:
return False
return preset_name in target.presets
async def _apprise(self, target: list[Target], ev: Event) -> dict:
if not target or not isinstance(target, list):
return {}
import apprise
try:
notify = apprise.Apprise(debug=self._debug)
apr_config = Path(Config.get_instance().apprise_config)
if apr_config.exists():
apprise_config = notify.AppriseConfig()
apprise_config.add(apr_config)
notify.add(apprise_config)
for t in target:
notify.add(t.request.url)
status = await notify.async_notify(
body=ev.message or self._encoder.encode(ev.serialize()),
title=ev.title or f"YTPTube Event: {ev.event}",
)
if not status:
msg = "Apprise failed to send notification."
raise RuntimeError(msg) # noqa: TRY301
except Exception as e:
LOG.exception(e)
LOG.error(f"Error sending Apprise notification: {e!s}")
return {"error": str(e), "event": ev.event, "id": ev.id, "targets": [t.name for t in target]}
return {}
async def _send(self, target: Target, ev: Event) -> dict:
try:
LOG.info(f"Sending Notification event '{ev.event}: {ev.id}' to '{target.name}'.")
headers: dict[str, str] = {
"User-Agent": f"YTPTube/{self._version}",
"X-Event-Id": ev.id,
"X-Event": ev.event,
"Content-Type": "application/json"
if "json" == target.request.type.lower()
else "application/x-www-form-urlencoded",
}
if len(target.request.headers) > 0:
headers.update({h.key: h.value for h in target.request.headers if h.key and h.value})
payload: dict = ev.serialize()
if "data" != target.request.data_key:
payload[target.request.data_key] = payload["data"]
payload.pop("data", None)
if "form" == target.request.type.lower():
payload[target.request.data_key] = self._encoder.encode(payload[target.request.data_key])
else:
payload = self._encoder.encode(payload)
response = await self._client.request(
method=target.request.method.upper(),
url=target.request.url,
headers=headers,
data=payload if "form" == target.request.type.lower() else None,
content=payload if "json" == target.request.type.lower() else None,
)
respData: dict[str, Any] = {
"url": target.request.url,
"status": response.status_code,
"text": response.text,
}
msg: str = f"Notification target '{target.name}' Responded to event '{ev.event}: {ev.id}' with status '{response.status_code}'."
if self._debug and respData.get("text"):
msg += f" body '{respData.get('text', '??')}'."
LOG.info(msg)
return respData
except Exception as e:
err_msg = str(e)
if not err_msg:
err_msg: str = type(e).__name__
tb = "".join(traceback.format_exception(type(e), e, e.__traceback__))
LOG.error(f"Error sending Notification event '{ev.event}: {ev.id}' to '{target.name}'. '{err_msg!s}'. {tb}")
return {"url": target.request.url, "status": 500, "text": str(ev)}
def emit(self, e: Event, _, **__) -> None:
if len(self._targets) < 1 or not NotificationEvents.is_valid(e.event):
return
self._offload.submit(self.send, e)
return
async def noop(self) -> None:
return None