Move server code to this repo (#95)

move server code to this repo

app/api/track.py

@@ -0,0 +1,33 @@
+"""
+Contains all the track routes.
+"""
+from flask import Blueprint, send_file
+from app.db.store import Store
+
+trackbp = Blueprint("track", __name__, url_prefix="/")
+
+
+@trackbp.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"}
+    if trackhash is None:
+        return msg, 404
+
+    try:
+        track = Store.get_tracks_by_trackhashes([trackhash])[0]
+    except IndexError:
+        track = None
+
+    if track is None:
+        return msg, 404
+
+    audio_type = track.filepath.rsplit(".", maxsplit=1)[-1]
+
+    try:
+        return send_file(track.filepath, mimetype=f"audio/{audio_type}")
+    except FileNotFoundError:
+        return msg, 404