Update app.py

app.py

@@ -22,7 +22,7 @@ from io import BytesIO
 from pathlib import Path
 import os
 from utils.block_relation_builder import block_builder, variable_adder_main
-
+global pdf_doc
 # ============================== #
 #     INITIALIZE CLIP EMBEDDER   #
 # ============================== #
@@ -2259,6 +2259,17 @@ def download_sb3(project_id):
         download_name=sb3_path.name
     )
 
+@app.route("/download_pdf/<project_id>", methods=["GET"])
+def download_sb3(project_id):
+    if not pdf_doc.exists():
+        return jsonify({"error": "Scratch project file not found"}), 404
+
+    return send_file(
+        pdf_doc,
+        as_attachment=True,
+        download_name=pdf_doc.name
+    )
+
 # API endpoint
 @app.route('/process_pdf', methods=['POST'])
 def process_pdf():
@@ -2289,7 +2300,7 @@ def process_pdf():
         temp_dir = tempfile.mkdtemp()
         saved_pdf_path = os.path.join(temp_dir, filename)
         pdf_file.save(saved_pdf_path)
-
+        pdf_doc = saved_pdf_path
         # logger.info(f"Created project folder: {project_folder}")
         logger.info(f"Saved uploaded PDF to: {saved_pdf_path}")