Update app.py

app.py

@@ -581,17 +581,24 @@ def get_recommendations(keywords, max_results=5):
 
 def process_youtube_video(url):
     try:
+        import re
+        from youtube_transcript_api import YouTubeTranscriptApi, TranscriptsDisabled, NoTranscriptFound
+        from textblob import TextBlob
+
         thumbnail = None
         summary = "No transcript available"
         sentiment_label = "N/A"
 
+        # Extract video ID
         video_id = extract_video_id(url)
         if not video_id:
             return None, "Invalid YouTube URL", "N/A"
 
+        # Generate thumbnail URL
         thumbnail = f"https://img.youtube.com/vi/{video_id}/maxresdefault.jpg"
 
         try:
+            # Fetch transcript
             transcript_list = YouTubeTranscriptApi.list_transcripts(video_id)
             transcript = None
             try:
@@ -599,18 +606,21 @@ def process_youtube_video(url):
             except:
                 transcript = transcript_list.find_generated_transcript(['en'])
 
+            # Combine transcript into text
             text = " ".join([t['text'] for t in transcript.fetch()])
             if not text.strip():
                 raise ValueError("Transcript is empty")
 
+            # Clean and analyze text
             cleaned_text = clean_text_for_analysis(text)
-
             sentiment = TextBlob(cleaned_text).sentiment
             sentiment_label = f"{'Positive' if sentiment.polarity > 0 else 'Negative' if sentiment.polarity < 0 else 'Neutral'} ({sentiment.polarity:.2f})"
 
+            # Summarize text
             summary = f"Summary: {cleaned_text[:400]}..."
 
         except (TranscriptsDisabled, NoTranscriptFound):
+            # Fall back to metadata if no transcript
             metadata = get_video_metadata(video_id)
             summary = metadata.get("description", "No subtitles available")
             sentiment_label = "N/A"
@@ -619,6 +629,8 @@ def process_youtube_video(url):
 
     except Exception as e:
         return None, f"Error: {str(e)}", "N/A"
+
+# Test the function
 url = "https://www.youtube.com/watch?v=q1XFm21I-VQ"
 thumbnail, summary, sentiment = process_youtube_video(url)
 print(f"Thumbnail: {thumbnail}\n")