Update app.py

app.py

@@ -43,22 +43,25 @@ def home():
     else:
         # Redirect to your PDF viewer route when ready
         return redirect(url_for("view_pdf", **request.args))
-PROCESSED_PDF_PATH = "static/processed.pdf"  # cached processed PDF
+PROCESSED_PDF_PATH = "static/processed.pdf"
 
 @app.route('/view-pdf', methods=['GET'])
 def view_pdf():
-    """First entry point — process the PDF once, then show viewer at specific page/zoom."""
+    """
+    Processes the PDF only once (first time).
+    Later requests just open the same viewer tab and move to correct page/zoom.
+    """
     encoded_pdf_link = request.args.get("pdfLink")
-    page = request.args.get("page", default="1")
-    zoom = request.args.get("zoom", default="100")
+    page = request.args.get("page", "1")
+    zoom = request.args.get("zoom", "100")
 
     if not encoded_pdf_link:
         return "Missing pdfLink parameter.", 400
 
     pdf_link = urllib.parse.unquote(encoded_pdf_link)
-    print(f"Requested PDF: {pdf_link} | Page: {page} | Zoom: {zoom}")
+    print(f"PDF requested: {pdf_link}, Page: {page}, Zoom: {zoom}")
 
-    # Only process PDF if not already processed
+    # Only process once
     if not os.path.exists(PROCESSED_PDF_PATH):
         try:
             from InitialMarkups import extract_section_under_header
@@ -69,20 +72,20 @@ def view_pdf():
             os.makedirs("static", exist_ok=True)
             with open(PROCESSED_PDF_PATH, "wb") as f:
                 f.write(pdf_content)
-            print("✅ PDF processed and saved to:", PROCESSED_PDF_PATH)
+            print("✅ PDF processed successfully.")
         except Exception as e:
             print("❌ Error processing PDF:", e)
             return "PDF could not be processed.", 500
     else:
-        print("⚙️ Using cached PDF (already processed).")
+        print("⚙️ Using cached PDF — already processed.")
 
-    # Render viewer and start at requested page/zoom
-    return render_template("gui.html", start_page=page, start_zoom=zoom)
+    # Pass page & zoom to the viewer
+    return render_template("viewer.html", start_page=page, start_zoom=zoom)
 
 
 @app.route('/get-pdf')
 def get_pdf():
-    """Serve the cached processed PDF."""
+    """Serve the processed PDF."""
     if not os.path.exists(PROCESSED_PDF_PATH):
         return "PDF not processed yet.", 404
     return send_file(PROCESSED_PDF_PATH, mimetype="application/pdf")