download fix..

backend/server.py

@@ -139,24 +139,37 @@ def get_report(video_id: str, name: str):
 
 @app.get("/reports/zip/{video_id}")
 def download_all_reports(video_id: str):
+    print(f"[BACKEND] ZIP request for {video_id}")
     base_path = REPORT_DIR / video_id
     if not base_path.exists():
-        return Response(status_code=404)
-    
-    # Create zip in temp dir
-    zip_base = REPORT_DIR / f"bundle_{video_id}"
-    shutil.make_archive(str(zip_base), 'zip', str(base_path))
-    
-    final_zip = Path(f"{zip_base}.zip")
+        print(f"[BACKEND] Error: {base_path} not found")
+        return Response(content=f"Report directory not found for {video_id}", status_code=404)
     
-    original_name = video_info.get(video_id, "UrbanFlow_Analysis")
-    safe_name = "".join(x for x in original_name if x.isalnum() or x in "._-").rsplit(".", 1)[0]
-    
-    return FileResponse(
-        str(final_zip), 
-        media_type="application/zip", 
-        filename=f"{safe_name}_UrbanFlow.zip"
-    )
+    try:
+        # Create zip in temp dir
+        zip_base = REPORT_DIR / f"bundle_{video_id}"
+        if os.path.exists(f"{zip_base}.zip"):
+            os.remove(f"{zip_base}.zip")
+            
+        print(f"[BACKEND] Archiving {base_path} to {zip_base}.zip")
+        shutil.make_archive(str(zip_base), 'zip', str(base_path))
+        
+        final_zip = Path(f"{zip_base}.zip")
+        if not final_zip.exists():
+             raise Exception("Zip file was not created")
+             
+        original_name = video_info.get(video_id, "UrbanFlow_Analysis")
+        safe_name = "".join(x for x in original_name if x.isalnum() or x in "._-").rsplit(".", 1)[0]
+        
+        print(f"[BACKEND] Serving ZIP: {final_zip}")
+        return FileResponse(
+            str(final_zip), 
+            media_type="application/zip", 
+            filename=f"{safe_name}_reports.zip"
+        )
+    except Exception as e:
+        print(f"[BACKEND] ZIP Error: {str(e)}")
+        return Response(content=str(e), status_code=500)
 
 
 @app.websocket("/ws/run")

frontend/vehicles.html

@@ -1512,14 +1512,14 @@
                             if (document.getElementById('sv-auto-download').classList.contains('active')) {
                                 // Download the full bundle ZIP
                                 setTimeout(() => {
-                                    console.log('[UrbanFlow] Auto-downloading ZIP bundle...');
+                                    console.log('[UrbanFlow] Fetching ZIP bundle for:', d.video_id);
                                     const link = document.createElement('a');
                                     link.href = `/reports/zip/${d.video_id}`;
-                                    link.download = `UrbanFlow_Analysis.zip`;
+                                    link.download = `UrbanFlow_Reports.zip`;
                                     document.body.appendChild(link);
                                     link.click();
                                     document.body.removeChild(link);
-                                }, 500); 
+                                }, 1000); 
                             }
                         });
                     }