fix caching

app.py

@@ -13,6 +13,7 @@ app = Flask(__name__)
 
 # Use a raw string for the UNC path.
 app.config['MP3_ROOT'] = r'/mp3_root'
+# app.config['MP3_ROOT'] = r'\\192.168.10.10\docker2\sync-bethaus\syncfiles\folders'
 app.config['SECRET_KEY'] = os.urandom(24) 
 app.config['ALLOWED_SECRETS'] = {
     'test': datetime(2026, 3, 31, 23, 59, 59),
@@ -177,6 +178,7 @@ def serve_file(filename):
     full_path = os.path.normpath(os.path.join(app.config['MP3_ROOT'], decoded_filename))
     
     if not os.path.isfile(full_path):
+        app.logger.error(f"File not found: {full_path}")
         return "File not found", 404
 
     mime, _ = mimetypes.guess_type(full_path)
@@ -187,12 +189,14 @@ def serve_file(filename):
     # Check cache first (using diskcache)
     cached = cache.get(filename)
     if cached:
+        app.logger.info(f"Cache hit for {filename}")
         cached_file_bytes, mime = cached
         cached_file = io.BytesIO(cached_file_bytes)
         response = send_file(cached_file, mimetype=mime)
     else:
+        app.logger.info(f"Cache miss for {filename}")
         if mime and mime.startswith('image/'):
-            # Image processing
+            # Image processing branch (with caching)
             try:
                 with Image.open(full_path) as img:
                     img.thumbnail((1200, 1200))
@@ -202,16 +206,24 @@ def serve_file(filename):
                     cache.set(filename, (img_bytes, mime))
                     response = send_file(io.BytesIO(img_bytes), mimetype=mime)
             except Exception as e:
-                app.logger.error(f"Image processing failed: {e}")
+                app.logger.error(f"Image processing failed for {filename}: {e}")
                 abort(500)
         else:
-            # Other file types
-            response = send_file(full_path, mimetype=mime)
+            # Cache non-image files: read bytes and cache
+            try:
+                with open(full_path, 'rb') as f:
+                    file_bytes = f.read()
+                cache.set(filename, (file_bytes, mime))
+                response = send_file(io.BytesIO(file_bytes), mimetype=mime)
+            except Exception as e:
+                app.logger.error(f"Failed to read file {filename}: {e}")
+                abort(500)
 
     # Set Cache-Control header (browser caching for 1 day)
-    response.headers['Cache-Control'] = 'public, max-age=86400'  # 1 day
+    response.headers['Cache-Control'] = 'public, max-age=86400'
     return response
 
+
 @app.route("/transcript/<path:filename>")
 @require_secret
 def get_transcript(filename):