fix upload for JSONs

app.py

@@ -81,17 +81,26 @@ def init_leaderboard(dataframe, track):
         interactive=False,
     )
 
+submitted_predictions = {}
 def process_json(temp_file):
-    if isinstance(temp_file, str):
-        obj = json.loads(temp_file)
-    else:
-        try:
-            with gzip.open(temp_file, 'rt') as header:
-                obj = json.loads(header)
-        except:
-            with open(temp_file, 'r') as header:
-                obj = json.loads(header)
-    return obj
+    if temp_file is None:
+        return {}
+
+    # Handle file upload
+    try:
+        file_path = temp_file.name
+        if file_path.endswith('.gz'):
+            with gzip.open(file_path, 'rt') as f:
+                data = json.load(f)
+                submitted_predictions.update(data)
+        else:
+            with open(file_path, 'r') as f:
+                data = json.load(f)
+                submitted_predictions.update(data)
+    except Exception as e:
+        raise gr.Error(f"Error processing file: {str(e)}")
+
+    return data
 
 
 demo = gr.Blocks(css=custom_css)
@@ -165,9 +174,14 @@ with demo:
                         interactive=True
                     )
 
-                    upload_button = gr.UploadButton(label="Upload predictions", file_types = ['.json', '.json.gz'], file_count = "single")    
-                    predictions = {}
-                    upload_button.upload(fn=process_json, inputs=upload_button, outputs=predictions, api_name="upload_json")
+                    upload_button = gr.UploadButton(label="Upload predictions", file_types=[".json", ".gz"], file_count="single")
+                    output_json = gr.JSON(label="Processed JSON")
+                    upload_button.upload(
+                        fn=process_json,
+                        inputs=upload_button,
+                        outputs=output_json,
+                        api_name="upload_json"
+                    )
                 
             submit_button = gr.Button("Submit Eval")
             submission_result = gr.Markdown()