add lyrics route and methods

app/api/__init__.py

@@ -17,6 +17,7 @@ from app.api import (
     search,
     send_file,
     settings,
+    lyrics
 )
 
 
@@ -43,5 +44,6 @@ def create_api():
         app.register_blueprint(imgserver.api)
         app.register_blueprint(settings.api)
         app.register_blueprint(colors.api)
+        app.register_blueprint(lyrics.api)
 
         return app

app/api/lyrics.py

@@ -0,0 +1,25 @@
+from flask import Blueprint, request
+
+from app.lib.lyrics import get_lyrics
+
+api = Blueprint("lyrics", __name__, url_prefix="")
+
+
+@api.route("/lyrics", methods=["POST"])
+def send_lyrics():
+    """
+    Returns the lyrics for a track
+    """
+    data = request.get_json()
+
+    filepath = data.get("filepath", None)
+
+    if filepath is None:
+        return {"error": "No filepath provided"}, 400
+
+    lyrics = get_lyrics(filepath)
+
+    if lyrics is None:
+        return {"error": "No lyrics found"}, 204
+
+    return {"lyrics": lyrics}, 200