Code cleanup

(there was an attempt to redirect yt-dlp stdout)

backend/main.py

@@ -1,9 +1,6 @@
 import asyncio
 import json
 
-import secrets
-import time
-
 import websockets
 
 import response
@@ -11,17 +8,15 @@ import ydl_pool
 import ydl_wrap
 
 
+type SocketT = websockets.WebSocketServerProtocol
+
+
 # TODO: config
 HOST = '127.0.0.1'
 PORT = 5678
 
 
-def generate_key() -> str:
+async def handler(socket: SocketT) -> None:
-
-    return hex(time.time_ns()) + secrets.token_hex(2)
-
-
-async def handler(socket: websockets.WebSocketServerProtocol) -> None:
 
     ydls = ydl_pool.Downloaders()
 
@@ -41,14 +36,12 @@ async def handler(socket: websockets.WebSocketServerProtocol) -> None:
                     ))
 
                 case 'download':  # download by URL
-                    # TODO: send all yt-dlp's output to client
+                    ret = await ydl_wrap.download(
-                    await socket.send(response.ok_download(
+                        ydls.get_ydl(data['site']),
-                        await ydl_wrap.download(
+                        data['url'],
-                            ydls.get_ydl(data['site']),
+                        data.get('items'),
-                            data['url'],
+                    )
-                            data.get('items'),
+                    await socket.send(response.ok_downloaded(ret))
-                        )
-                    ))
 
                 # TODO: cancellation
 
@@ -71,4 +64,4 @@ async def main() -> None:
 
 
 if __name__ == '__main__':
-    asyncio.run(main())
+    asyncio.run(main(), debug=True)

backend/response.py

@@ -9,9 +9,9 @@ def ok_playlist(items: list[str]) -> str:
         "data": items,
     })
 
-def ok_download(ret: int) -> str:
+def ok_downloaded(ret: int) -> str:
     return json.dumps({
-        "ok": True,
+        "type": "downloaded",
         "data": ret,
     })
 

backend/ydl_pool.py

@@ -48,7 +48,7 @@ class Downloaders:
         ydl = self.ydls[site]
         if ydl is None:
             ydl = create_ydl_fn[site]()
-            ydl.params['trim_file_name'] = 40  # TODO: config
+            ydl.params['trim_file_name'] = 255  # TODO: config  # NOTE: includes path, not only filename
             # artists.0 instead of artist, because it can contain "feat. ..."
             ydl.params['outtmpl']['default'] = 'music/%(artists.0)s/%(album)s/%(track)s.%(ext)s'
             ydl.add_post_processor(id3pp.ID3TagsPP(), when='post_process')

backend/ydl_wrap.py

@@ -6,7 +6,12 @@ from yt_dlp import YoutubeDL
 
 async def get_playlist_items(ydl: YoutubeDL, url: str) -> list[str]:
 
-    return await asyncio.get_event_loop().run_in_executor(None, _target_get_playlist_items, ydl, url)
+    return await asyncio.get_event_loop().run_in_executor(
+        None,
+        _target_get_playlist_items,
+        ydl,
+        url,
+    )
 
 
 def _target_get_playlist_items(ydl: YoutubeDL, url: str) -> list[str]:
@@ -17,12 +22,24 @@ def _target_get_playlist_items(ydl: YoutubeDL, url: str) -> list[str]:
     return [entry['title'] for entry in info['entries']]
 
 
-async def download(ydl: YoutubeDL, url: str, playlist_items: Iterable[int] | None = None) -> int:
+async def download(
+        ydl: YoutubeDL,
+        url: str,
+        playlist_items: Iterable[int] | None = None) -> int:
 
-    return await asyncio.get_event_loop().run_in_executor(None, _target_download, ydl, url, playlist_items)
+    return await asyncio.get_event_loop().run_in_executor(
+        None,
+        _target_download,
+        ydl,
+        url,
+        playlist_items,
+    )
 
 
-def _target_download(ydl: YoutubeDL, url: str, playlist_items: Iterable[int] | None = None) -> int:
+def _target_download(
+        ydl: YoutubeDL,
+        url: str,
+        playlist_items: Iterable[int] | None = None) -> int:
 
     if playlist_items:
         ydl.params['playlist_items'] = ','.join(str(i) for i in playlist_items)