Transform into detailed Study Guide Generator

Changed from short summaries to comprehensive study guides:

- Increased chunk size: 1000 → 2500 chars for more context
- Added chunk overlap: 500 chars to maintain continuity
- Increased output length: max_length 130 → 400 words
- Increased minimum length: 30 → 150 words for substantial content
- Added section markers for organization
- Formatted output as proper study guide with tips
- Updated UI labels: 'Summary' → 'Detailed Study Guide'
- Changed title to 'PDF Study Guide Generator'

Now generates long, detailed study notes covering all important
points - perfect for exam preparation, not just short summaries.

app.py

@@ -10,7 +10,7 @@ device = 0 if torch.cuda.is_available() else -1
 summarizer = pipeline("summarization", model="facebook/bart-large-cnn", device=device)
 print("Model ready!")
 
-def summarize_pdf(pdf_file):
+def create_study_guide(pdf_file):
     if pdf_file is None:
         return "Please upload a PDF file."
 
@@ -26,32 +26,85 @@ def summarize_pdf(pdf_file):
     if not text.strip():
         return "PDF is empty or contains no text."
 
-    # Chunk text (simple version - split every 1000 chars)
-    chunk_size = 1000
-    chunks = [text[i:i+chunk_size] for i in range(0, len(text), chunk_size)]
+    # Better chunking - split by paragraphs/sections (larger chunks for detailed recap)
+    chunk_size = 2500  # Larger chunks for more context
+    chunk_overlap = 500  # Overlap to maintain context
+
+    chunks = []
+    for i in range(0, len(text), chunk_size - chunk_overlap):
+        chunk = text[i:i + chunk_size]
+        if len(chunk.strip()) > 100:  # Only process meaningful chunks
+            chunks.append(chunk)
+
+    # Create detailed study notes for each section
+    study_notes = []
+    total_chunks = len(chunks)
 
-    # Summarize each chunk
-    summaries = []
     for i, chunk in enumerate(chunks):
-        if len(chunk.strip()) < 50:
-            continue
         try:
-            result = summarizer(chunk, max_length=130, min_length=30, do_sample=False)
-            summaries.append(result[0]['summary_text'])
-        except:
+            # Generate longer, more detailed summaries (study guide style)
+            # max_length increased significantly for detailed recap
+            result = summarizer(
+                chunk,
+                max_length=400,  # Much longer output for detailed study notes
+                min_length=150,   # Ensure substantial content
+                do_sample=False,
+                truncation=True
+            )
+
+            section_note = result[0]['summary_text']
+
+            # Add section marker for organization
+            study_notes.append(f"### Section {i+1}/{total_chunks}\n{section_note}")
+
+        except Exception as e:
+            # If a chunk fails, continue with others
             continue
 
-    # Combine summaries
-    final_summary = "\n\n".join(summaries)
-    return final_summary if final_summary else "Could not generate summary."
+    # Combine all study notes
+    if not study_notes:
+        return "Could not generate study guide. Please try a different PDF."
+
+    # Create formatted study guide
+    study_guide = f"""# 📚 Study Guide
+
+**Total Sections:** {len(study_notes)}
+
+---
+
+"""
+
+    study_guide += "\n\n---\n\n".join(study_notes)
+
+    study_guide += f"""
+
+---
+
+## 📖 Study Tips
+
+- This guide covers the important points from your document
+- Review each section carefully
+- Focus on key concepts highlighted above
+- Use this as your primary study material
+
+*Generated study guide - {len(study_notes)} sections extracted*
+"""
+
+    return study_guide
 
-# Create simple interface
+# Create interface
 demo = gr.Interface(
-    fn=summarize_pdf,
-    inputs=gr.File(label="Upload PDF"),
-    outputs=gr.Textbox(label="Summary", lines=20),
-    title="PDF Summarizer",
-    description="Upload a PDF to get an AI-generated summary"
+    fn=create_study_guide,
+    inputs=gr.File(label="📄 Upload PDF Document"),
+    outputs=gr.Textbox(
+        label="📚 Detailed Study Guide",
+        lines=30,
+        max_lines=50
+    ),
+    title="📚 PDF Study Guide Generator",
+    description="Upload a PDF to generate a detailed study guide with important points for exam preparation. The guide will be comprehensive and cover all key concepts.",
+    examples=None,
+    allow_flagging="never"
 )
 
 if __name__ == "__main__":