Update app.py

app.py

@@ -8,6 +8,10 @@ from datetime import datetime
 load_dotenv()
 HF_TOKEN = os.getenv("HF_TOKEN")
 
+# Check if token exists and handle error gracefully
+if not HF_TOKEN:
+    raise ValueError("HF_TOKEN environment variable not found. Please set it in your .env file.")
+
 # Initialize the HuggingFace inference endpoint
 llm = HuggingFaceEndpoint(
     repo_id="mistralai/Mistral-7B-Instruct-v0.3",
@@ -17,6 +21,9 @@ llm = HuggingFaceEndpoint(
 
 # Input validation function
 def validate_ingredients(ingredients):
+    if not ingredients or ingredients.strip() == "":
+        return "Invalid"
+    
     prompt = (
         f"Review the provided list of items: {ingredients}. "
         f"Determine if all items are valid food ingredients. "
@@ -38,18 +45,24 @@ def generate_recipe(ingredients):
 
 # Combined function for Gradio
 def suggest_recipes(ingredients):
+    if not ingredients or ingredients.strip() == "":
+        return "Please enter ingredients before submitting."
+    
     validation_result = validate_ingredients(ingredients)
-    if validation_result == "Valid":
+    if "Valid" in validation_result:  # More flexible check for "Valid" in response
         return generate_recipe(ingredients)
     else:
-        return "I'm sorry, but I can't process this request due to invalid ingredients. Please provide valid ingredients for cooking!"
+        return "I'm sorry, but I can't process this request due to invalid ingredients. Please provide valid food ingredients for cooking!"
 
 # Feedback function
 def save_feedback(feedback):
     if feedback.strip():
-        with open("feedback.txt", "a") as file:
-            file.write(f"{datetime.now()}: {feedback}\n")
-        return "Thank you for your feedback!"
+        try:
+            with open("feedback.txt", "a") as file:
+                file.write(f"{datetime.now()}: {feedback}\n")
+            return "Thank you for your feedback!"
+        except Exception as e:
+            return f"Error saving feedback: {str(e)}"
     return "Please enter feedback before submitting."
 
 # Gradio interface with professional color theme
@@ -59,7 +72,7 @@ with gr.Blocks(theme=gr.themes.Monochrome(primary_hue="blue")) as app:
         gr.HTML(
             """
             <div style="text-align: center; margin: auto;">
-                <h1 style="color: #1155ff; font-size: 3.5em; font-weight: bold; font-family: 'Arial', sans-serif; margin-bottom: 0.5em;">🍳 Recipe Generator !</h1>
+                <h1 style="color: #1155ff; font-size: 3.5em; font-weight: bold; font-family: 'Arial', sans-serif; margin-bottom: 0.5em;">🍳 Recipe Generator</h1>
                 <p style="font-size: 1.5em; color: #555555; font-weight: lighter; font-family: 'Verdana', sans-serif;">
                     Enter the ingredients you have, and we'll validate them and suggest delightful recipes!
                 </p>
@@ -67,9 +80,13 @@ with gr.Blocks(theme=gr.themes.Monochrome(primary_hue="blue")) as app:
             """
         )
 
-    # Banner Image
-    with gr.Row():
-        gr.Image("./recipe-generator-banner.png", show_label=False, elem_id="banner-image", width="100%")
+    # Banner Image - Check if file exists first
+    try:
+        with gr.Row():
+            gr.Image("./recipe-generator-banner.png", show_label=False, elem_id="banner-image", width="100%")
+    except Exception:
+        # Skip banner if image doesn't exist
+        pass
 
     # Ingredient input and output with borders and padding for more contrast
     with gr.Row():
@@ -182,4 +199,5 @@ with gr.Blocks(theme=gr.themes.Monochrome(primary_hue="blue")) as app:
     """ 
 
 # Launch the app
-app.launch()
+if __name__ == "__main__":
+    app.launch()