[BACKEND] Use generic collection download for every playlist strategy

src/ytdl_sub/downloaders/generic/collection.py

@@ -235,6 +235,10 @@ class CollectionDownloader(Downloader[CollectionDownloadOptions, Entry]):
 
     def _download_parent_entry(self, parent: EntryParent) -> Generator[Entry, None, None]:
         """Download in reverse order, that way we download older entries ones first"""
+        if parent.is_entry():
+            yield parent.to_type(Entry)
+            return
+
         for entry_child in reversed(parent.entry_children()):
             if _entry_key(entry_child) in self.downloaded_entries:
                 continue

src/ytdl_sub/downloaders/youtube/channel.py

@@ -59,7 +59,7 @@ class YoutubeChannelDownloaderOptions(YoutubeDownloaderOptions):
 
         self.collection_validator = CollectionDownloadOptions(
             name=self._name,
-            value={"urls": [{"url": self._channel_url}]},
+            value={"urls": [{"url": self.channel_url}]},
         )
 
     @property

src/ytdl_sub/downloaders/youtube/merge_playlist.py

@@ -3,6 +3,7 @@ from typing import List
 from typing import Optional
 from typing import Tuple
 
+from ytdl_sub.downloaders.generic.collection import CollectionDownloader
 from ytdl_sub.downloaders.youtube.abc import YoutubeDownloader
 from ytdl_sub.downloaders.youtube.playlist import YoutubePlaylistDownloaderOptions
 from ytdl_sub.entries.youtube import YoutubeVideo
@@ -147,9 +148,25 @@ class YoutubeMergePlaylistDownloader(
 
     def download(self) -> List[Tuple[YoutubeVideo, FileMetadata]]:
         """Download a single Youtube video, then split it into multiple videos"""
-        merged_video = self._to_merged_video(
-            entry_dict=self.extract_info(url=self.download_options.playlist_url)
+        downloader = CollectionDownloader(
+            download_options=self.download_options.collection_validator,
+            enhanced_download_archive=self._enhanced_download_archive,
+            ytdl_options_builder=self._ytdl_options_builder,
+            overrides=self.overrides,
         )
+        collection_url = self.download_options.collection_validator.collection_urls.list[0]
+
+        parents = downloader.download_url_metadata(collection_url=collection_url)
+        assert len(parents) == 1, "Playlist should be the only entry parent"
+        playlist = parents[0]
+
+        # perform the download of all entries in the playlist
+        _ = list(downloader.download_url(collection_url=collection_url, parents=parents))
+
+        # pylint: disable=protected-access
+        merged_video = self._to_merged_video(entry_dict=playlist._kwargs)
+        # pylint: enable=protected-access
+
         merged_video_metadata = self._get_chapters(
             merged_video=merged_video, add_chapters=self.download_options.add_chapters
         )

src/ytdl_sub/downloaders/youtube/playlist.py

@@ -1,13 +1,19 @@
 from typing import Dict
 from typing import Generator
 from typing import List
+from typing import Optional
 
+from ytdl_sub.config.preset_options import Overrides
+from ytdl_sub.downloaders.downloader import DownloaderOptionsT
 from ytdl_sub.downloaders.generic.collection import CollectionDownloader
 from ytdl_sub.downloaders.generic.collection import CollectionDownloadOptions
 from ytdl_sub.downloaders.youtube.abc import YoutubeDownloader
 from ytdl_sub.downloaders.youtube.abc import YoutubeDownloaderOptions
+from ytdl_sub.downloaders.ytdl_options_builder import YTDLOptionsBuilder
+from ytdl_sub.entries.entry_parent import EntryParent
 from ytdl_sub.entries.youtube import YoutubePlaylistVideo
 from ytdl_sub.validators.url_validator import YoutubePlaylistUrlValidator
+from ytdl_sub.ytdl_additions.enhanced_download_archive import EnhancedDownloadArchive
 
 
 class YoutubePlaylistDownloaderOptions(YoutubeDownloaderOptions):
@@ -36,7 +42,7 @@ class YoutubePlaylistDownloaderOptions(YoutubeDownloaderOptions):
 
         self.collection_validator = CollectionDownloadOptions(
             name=self._name,
-            value={"urls": [{"url": self._playlist_url}]},
+            value={"urls": [{"url": self.playlist_url}]},
         )
 
     @property
@@ -87,6 +93,22 @@ class YoutubePlaylistDownloader(
 
     # pylint: enable=line-too-long
 
+    def __init__(
+        self,
+        download_options: DownloaderOptionsT,
+        enhanced_download_archive: EnhancedDownloadArchive,
+        ytdl_options_builder: YTDLOptionsBuilder,
+        overrides: Overrides,
+    ):
+        super().__init__(
+            download_options=download_options,
+            enhanced_download_archive=enhanced_download_archive,
+            ytdl_options_builder=ytdl_options_builder,
+            overrides=overrides,
+        )
+
+        self.playlist: Optional[EntryParent] = None
+
     def download(self) -> Generator[YoutubePlaylistVideo, None, None]:
         """
         Downloads all videos in a Youtube playlist.
@@ -101,14 +123,14 @@ class YoutubePlaylistDownloader(
 
         parents = downloader.download_url_metadata(collection_url=collection_url)
         assert len(parents) == 1, "Playlist should be the only entry parent"
-        playlist = parents[0]
+        self.playlist = parents[0]
 
         # TODO: Handle this better
         self.overrides.add_override_variables(
             variables_to_add={
-                "source_title": playlist.title,
-                "source_uploader": playlist.kwargs_get("uploader", "__failed_to_scrape__"),
-                "source_description": playlist.kwargs_get("description", ""),
+                "source_title": self.playlist.title,
+                "source_uploader": self.playlist.kwargs_get("uploader", "__failed_to_scrape__"),
+                "source_description": self.playlist.kwargs_get("description", ""),
             }
         )
 

src/ytdl_sub/downloaders/youtube/video.py

@@ -1,6 +1,8 @@
 from typing import Dict
 from typing import List
 
+from ytdl_sub.downloaders.generic.collection import CollectionDownloader
+from ytdl_sub.downloaders.generic.collection import CollectionDownloadOptions
 from ytdl_sub.downloaders.youtube.abc import YoutubeDownloader
 from ytdl_sub.downloaders.youtube.abc import YoutubeDownloaderOptions
 from ytdl_sub.entries.youtube import YoutubeVideo
@@ -36,6 +38,11 @@ class YoutubeVideoDownloaderOptions(YoutubeDownloaderOptions):
         super().__init__(name, value)
         self._video_url = self._validate_key("video_url", YoutubeVideoUrlValidator).video_url
 
+        self.collection_validator = CollectionDownloadOptions(
+            name=self._name,
+            value={"urls": [{"url": self.video_url}]},
+        )
+
     @property
     def video_url(self) -> str:
         """
@@ -65,7 +72,14 @@ class YoutubeVideoDownloader(YoutubeDownloader[YoutubeVideoDownloaderOptions, Yo
 
     def download(self) -> List[YoutubeVideo]:
         """Download a single Youtube video"""
-        entry_dict = self.extract_info(url=self.download_options.video_url)
-        video = YoutubeVideo(entry_dict=entry_dict, working_directory=self.working_directory)
+        downloader = CollectionDownloader(
+            download_options=self.download_options.collection_validator,
+            enhanced_download_archive=self._enhanced_download_archive,
+            ytdl_options_builder=self._ytdl_options_builder,
+            overrides=self.overrides,
+        )
 
-        return [video]
+        for entry in downloader.download():
+            # pylint: disable=protected-access
+            yield YoutubeVideo(entry_dict=entry._kwargs, working_directory=self.working_directory)
+            # pylint: enable=protected-access