Update utils.py

utils.py

@@ -91,4 +91,17 @@ def is_google_colab():
         import google.colab
         return True
     except:
-        return False
+        return False
+
+def validate_json_parameters(json_str):
+    try:
+        params = json.loads(json_str)
+        required_keys = ['prompt', 'negative_prompt', 'seed', 'width', 'height', 'guidance_scale', 'num_inference_steps', 'sampler']
+        for key in required_keys:
+            if key not in params:
+                raise ValueError(f"Missing required key: {key}")
+        return params
+    except json.JSONDecodeError:
+        raise ValueError("Invalid JSON format")
+    except Exception as e:
+        raise ValueError(f"Error parsing JSON: {str(e)}")