fix: artist albums always sending all albums

+ move setproctitle inside if __name__ in manage.py

app/api/send_file.py

@@ -0,0 +1,55 @@
+"""
+Contains all the track routes.
+"""
+import os
+
+from flask import Blueprint, send_file, request
+
+from app.store.tracks import TrackStore
+
+api = Blueprint("track", __name__, url_prefix="/")
+
+
+@api.route("/file/<trackhash>")
+def send_track_file(trackhash: str):
+    """
+    Returns an audio file that matches the passed id to the client.
+    Falls back to track hash if id is not found.
+    """
+    msg = {"msg": "File Not Found"}
+
+    def get_mime(filename: str) -> str:
+        ext = filename.rsplit(".", maxsplit=1)[-1]
+        return f"audio/{ext}"
+
+    filepath = request.args.get("filepath")
+
+    if filepath is not None:
+        try:
+            track = TrackStore.get_tracks_by_filepaths([filepath])[0]
+        except IndexError:
+            track = None
+
+        track_exists = track is not None and os.path.exists(track.filepath)
+
+        if track_exists:
+            audio_type = get_mime(filepath)
+            return send_file(filepath, mimetype=audio_type)
+
+    if trackhash is None:
+        return msg, 404
+
+    tracks = TrackStore.get_tracks_by_trackhashes([trackhash])
+
+    for track in tracks:
+        if track is None:
+            return msg, 404
+
+        audio_type = get_mime(track.filepath)
+
+        try:
+            return send_file(track.filepath, mimetype=audio_type)
+        except (FileNotFoundError, OSError) as e:
+            return msg, 404
+
+    return msg, 404