Update app.py

app.py

@@ -37,28 +37,13 @@ SENSOR_COMMAND_TOPIC = f"command/picow/{PICO_ID}/as7341/read"
 SENSOR_DATA_TOPIC = f"color-mixing/picow/{PICO_ID}/as7341"
 
 channel_id = "UCHBzCfYpGwoqygH9YNh9A6g"
-playlist_id = "PL8uZlc2CEpelFebA8UgFMQP4Y1d5X_pME"
-
-video_id = get_latest_video_id(channel_id, playlist_id = playlist_id)
-print(f"[DEBUG]video id: {video_id}")
-
-def refresh_video():
-    video_id = get_latest_video_id(channel_id, playlist_id = "PL8uZlc2CEpelf9jikjX0cCCEzOVtHaPDA")
-    print(f"[DEBUG]video id: {video_id}")
-    iframe_html = f'''
-    <div style="position: relative; width: 100%; padding-top: 56.25%;">
-        <iframe 
-            style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;" 
-            src="https://www.youtube.com/embed/{video_id}" 
-            title="OT-2 Livestream" 
-            frameborder="0" 
-            allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" 
-            referrerpolicy="strict-origin-when-cross-origin" 
-            allowfullscreen>
-        </iframe>
-    </div>
-    '''
-    return iframe_html
+
+# Single source of truth for the playlist you care about
+PLAYLIST_ID = "PL8uZlc2CEpelFebA8UgFMQP4Y1d5X_pME"
+
+# Optional: initial fetch/log (not strictly required by Gradio app)
+video_id = get_latest_video_id(channel_id, playlist_id=PLAYLIST_ID)
+print(f"[DEBUG] initial video id: {video_id}")
 
 
 start_prefect_worker()
@@ -467,7 +452,7 @@ with gr.Blocks(title="OT-2 Liquid Color Matching Experiment Queue") as demo:
             gr.Markdown("### YouTube Livestream")
         
             def refresh_iframe():
-                video_id = get_latest_video_id(channel_id, playlist_id = "PL8uZlc2CEpelf9jikjX0cCCEzOVtHaPDA")
+                video_id = get_latest_video_id(channel_id, playlist_id = PLAYLIST_ID)
                 print(f"[DEBUG]video id: {video_id}")
                 return f'''
                 <div style="position: relative; width: 100%; padding-top: 56.25%;">