Initial commit: Flask internet radio player

app.py

@@ -0,0 +1,46 @@
+import os
+import random
+from flask import Flask, render_template, send_file, jsonify, abort, Response
+from pathlib import Path
+
+app = Flask(__name__)
+
+AUDIO_DIR = Path(__file__).parent / "audio"
+SUPPORTED_EXTENSIONS = {".mp3", ".ogg", ".wav", ".flac", ".aac", ".m4a"}
+
+
+def get_playlist():
+    files = sorted(
+        f.name for f in AUDIO_DIR.iterdir()
+        if f.is_file() and f.suffix.lower() in SUPPORTED_EXTENSIONS
+    )
+    return files
+
+
+@app.route("/")
+def index():
+    return render_template("index.html")
+
+
+@app.route("/api/playlist")
+def playlist():
+    return jsonify(get_playlist())
+
+
+@app.route("/audio/<path:filename>")
+def serve_audio(filename):
+    file_path = AUDIO_DIR / filename
+    if not file_path.is_file() or file_path.suffix.lower() not in SUPPORTED_EXTENSIONS:
+        abort(404)
+    # Prevent path traversal
+    if not file_path.resolve().is_relative_to(AUDIO_DIR.resolve()):
+        abort(403)
+    return send_file(file_path, conditional=True)
+
+
+if __name__ == "__main__":
+    if not AUDIO_DIR.exists():
+        AUDIO_DIR.mkdir()
+    print(f"Audio files directory: {AUDIO_DIR.absolute()}")
+    print(f"Found {len(get_playlist())} audio file(s)")
+    app.run(debug=True, host="0.0.0.0", port=5001)