new file: .gitignore

new file:   Dockerfile
	new file:   app.py
	new file:   requirements.txt
	new file:   start.bat
	new file:   templates/login.html
	new file:   templates/playlists.html
	new file:   templates/quiz.html

app.py

@@ -0,0 +1,72 @@
+from flask import Flask, redirect, request, session, url_for, render_template
+import os
+from dotenv import load_dotenv
+import spotipy
+from spotipy.oauth2 import SpotifyOAuth
+import random
+
+load_dotenv()
+
+app = Flask(__name__)
+app.secret_key = os.getenv("SECRET_KEY")
+
+SCOPE = "user-library-read playlist-read-private"
+
+def get_spotify_client():
+    return spotipy.Spotify(auth_manager=SpotifyOAuth(
+        client_id=os.getenv("SPOTIPY_CLIENT_ID"),
+        client_secret=os.getenv("SPOTIPY_CLIENT_SECRET"),
+        redirect_uri=os.getenv("SPOTIPY_REDIRECT_URI"),
+        scope=SCOPE,
+        cache_path=".cache"
+    ))
+
+@app.route("/")
+def home():
+    return render_template("login.html")
+
+@app.route("/login")
+def login():
+    sp_oauth = SpotifyOAuth(
+        client_id=os.getenv("SPOTIPY_CLIENT_ID"),
+        client_secret=os.getenv("SPOTIPY_CLIENT_SECRET"),
+        redirect_uri=os.getenv("SPOTIPY_REDIRECT_URI"),
+        scope=SCOPE
+    )
+    auth_url = sp_oauth.get_authorize_url()
+    return redirect(auth_url)
+
+@app.route("/callback")
+def callback():
+    sp_oauth = SpotifyOAuth(
+        client_id=os.getenv("SPOTIPY_CLIENT_ID"),
+        client_secret=os.getenv("SPOTIPY_CLIENT_SECRET"),
+        redirect_uri=os.getenv("SPOTIPY_REDIRECT_URI"),
+        scope=SCOPE
+    )
+    session.clear()
+    code = request.args.get('code')
+    token_info = sp_oauth.get_access_token(code)
+    session["token_info"] = token_info
+    return redirect("/playlists")
+
+@app.route("/playlists")
+def playlists():
+    sp = get_spotify_client()
+    playlists = sp.current_user_playlists()["items"]
+    return render_template("playlists.html", playlists=playlists)
+
+@app.route("/quiz/<playlist_id>")
+def quiz(playlist_id):
+    sp = get_spotify_client()
+    items = sp.playlist_items(playlist_id, additional_types=["track"])["items"]
+    
+    tracks = [item["track"] for item in items if item["track"]["preview_url"]]
+    if not tracks:
+        return "Keine Tracks mit Vorschau verfügbar!"
+
+    track = random.choice(tracks)
+    return render_template("quiz.html", track=track)
+
+if __name__ == "__main__":
+    app.run(debug=True)