Update app.py

app.py

@@ -64,6 +64,8 @@ cmap_select_2d = pn.widgets.Select(name='2D Colormap', options=["rainbow", "viri
 
 # ---------------- Core Functions ----------------
 def process_zip(event=None):
+    import tempfile
+
     if file_input.value:
         zip_path = os.path.join(MEDIA_DIR, file_input.filename)
         with open(zip_path, "wb") as f:
@@ -76,17 +78,15 @@ def process_zip(event=None):
             return
         status.object = "📦 Using default_model.zip"
 
-    output_dir = os.path.join("./", "ash_output")
+    # Use safe temporary output directory
+    output_dir = os.path.join(tempfile.gettempdir(), "ash_output")
     shutil.rmtree(output_dir, ignore_errors=True)
     os.makedirs(output_dir, exist_ok=True)
 
     try:
         processor = NAMEDataProcessor(output_root=output_dir)
-        processor.batch_process_zip(zip_path)
+        processor.batch_process_zip(zip_path)  # This must also use a writable temp dir internally
 
-        # animator_obj["3d"] = [xr.open_dataset(fp).load()
-        #                       for fp in sorted(glob.glob(os.path.join(output_dir, "3D", "*.nc")))]
-        
         animator_obj["3d"] = []
         for fp in sorted(glob.glob(os.path.join(output_dir, "3D", "*.nc"))):
             with xr.open_dataset(fp) as ds:
@@ -97,15 +97,12 @@ def process_zip(event=None):
             with xr.open_dataset(fp) as ds:
                 animator_obj["2d"].append(ds.load())
 
-        
-        # animator_obj["2d"] = [xr.open_dataset(fp).load()
-        #                       for fp in sorted(glob.glob(os.path.join(output_dir, "horizontal", "*.nc")))]
-
         with open(os.path.join(MEDIA_DIR, "last_run.txt"), "w") as f:
             f.write(zip_path)
 
         status.object += f" | ✅ Loaded 3D: {len(animator_obj['3d'])} & 2D: {len(animator_obj['2d'])}"
         update_media_tabs()
+
     except Exception as e:
         logging.exception("Error during ZIP processing")
         status.object = f"❌ Processing failed: {e}"