app.py

import gradio as gr

# Corrected Food Database with consistent food item names
FOOD_DATABASE = {
    "veg": {
        "paneer": {
            "lowCalorie": [
                {"name": "Grilled Paneer Tikka", "description": "Marinated and grilled paneer cubes with spices", "calories": 180, "protein": 14},
                {"name": "Paneer Bhurji", "description": "Scrambled paneer with vegetables", "calories": 200, "protein": 16}
            ],
            "highProtein": [
                {"name": "Protein Paneer Bowl", "description": "High protein paneer with quinoa", "calories": 320, "protein": 24},
                {"name": "Paneer Steak", "description": "Thick cut paneer steak with herbs", "calories": 280, "protein": 22}
            ]
        },
        "mushroom": {
            "lowCalorie": [
                {"name": "Grilled Mushroom Caps", "description": "Herb-stuffed mushroom caps", "calories": 120, "protein": 8},
                {"name": "Mushroom Soup", "description": "Creamy mushroom soup", "calories": 150, "protein": 6}
            ]
        },
        "aloo": {
            "lowCalorie": [
                {"name": "Baked Potato Wedges", "description": "Spiced and baked potato wedges", "calories": 160, "protein": 4},
                {"name": "Aloo Tikki", "description": "Spiced potato patties", "calories": 180, "protein": 3}
            ]
        }
    },
    "nonveg": {
        "chicken": {
            "highProtein": [
                {"name": "Grilled Chicken Breast", "description": "Herb-marinated grilled chicken", "calories": 250, "protein": 30},
                {"name": "Chicken Tikka", "description": "Tandoori spiced chicken pieces", "calories": 280, "protein": 32}
            ]
        },
        "fish": {
            "lowCalorie": [
                {"name": "Grilled Salmon", "description": "Lemon herb grilled salmon", "calories": 220, "protein": 25},
                {"name": "Steamed Fish", "description": "Ginger-garlic steamed fish", "calories": 180, "protein": 22}
            ]
        },
        "mutton": {
            "balanced": [
                {"name": "Mutton Curry", "description": "Traditional spiced mutton curry", "calories": 350, "protein": 28},
                {"name": "Grilled Lamb Chops", "description": "Herb-crusted lamb chops", "calories": 380, "protein": 32}
            ]
        }
    }
}

VEG_INGREDIENTS = ["Paneer", "Mushroom", "Aloo"]
NONVEG_TYPES = ["Chicken", "Fish", "Mutton"]
NUTRITION_OPTIONS = ["Low Calorie", "High Protein", "Low Carb", "Balanced", "Gluten Free"]

class ChatState:
    def __init__(self):
        self.step = "initial"
        self.category = ""
        self.ingredient = ""
        self.nutrition = ""

chat_state = ChatState()

def process_message(message, history):
    # Step 1: If initial step (asks if user wants to proceed)
    if chat_state.step == "initial":
        if "yes" in message.lower() or "yeah" in message.lower():
            chat_state.step = "category"
            return "Great! Please select your preferred category: Vegetarian, Non-Vegetarian."
        return "I'm here to help you customize your food. Would you like to proceed? (Yes/No)"
    
    # Step 2: Category selection
    elif chat_state.step == "category":
        chat_state.category = message.lower()
        chat_state.step = "ingredient"
        
        if "vegetarian" in message.lower():
            return f"Great! What main ingredient would you like? Available options: {', '.join(VEG_INGREDIENTS)}"
        elif "non-vegetarian" in message.lower():
            return f"Great! What type of meat would you prefer? Available options: {', '.join(NONVEG_TYPES)}"
        return "Please select either Vegetarian or Non-Vegetarian."
    
    # Step 3: Ingredient selection
    elif chat_state.step == "ingredient":
        chat_state.ingredient = message.lower().strip()  # Ensure no extra spaces or case issues
        # Get the list of available food items for this ingredient
        category = "nonveg" if "non" in chat_state.category else "veg"
        
        # Check if the ingredient exists in the food database
        if chat_state.ingredient not in FOOD_DATABASE[category]:
            chat_state.step = "initial"  # Reset for new conversation
            return f"Sorry, I don't have any data for {message}. Please select another ingredient."

        # List available food items based on ingredient
        food_items = FOOD_DATABASE[category][chat_state.ingredient]
        food_item_names = [item['name'] for nutrition in food_items for item in food_items[nutrition]]
        
        # Show available food items and move to nutrition selection
        chat_state.step = "nutrition"
        return f"Great! Here are the available food items for {message}:\n{', '.join(food_item_names)}\nNow, select your nutrition preference: {', '.join(NUTRITION_OPTIONS)}"
    
    # Step 4: Nutrition preference
    elif chat_state.step == "nutrition":
        # Sanitize and normalize input (remove spaces, handle case)
        nutrition = message.lower().replace(" ", "").strip()  # Remove spaces and make lowercase
        chat_state.nutrition = nutrition
        category = "nonveg" if "non" in chat_state.category else "veg"
        ingredient = chat_state.ingredient

        # Try to fetch the food items from the correct category, ingredient, and nutrition preference
        try:
            # Access food items based on category, ingredient, and nutrition preference
            food_items = FOOD_DATABASE[category][ingredient][nutrition]
            if not food_items:
                return f"Sorry, no {nutrition.replace('_', ' ').title()} dishes are available for {ingredient}."

            response = f"Here are some {nutrition.replace('_', ' ').title()} {ingredient} dishes for you:\n"
            for item in food_items:
                response += f"\n• {item['name']} ({item['calories']} cal, {item['protein']}g protein)\n  {item['description']}"
            
            chat_state.step = "initial"  # Reset for new conversation
            return response
        except KeyError:
            chat_state.step = "initial"  # Reset for new conversation
            return f"Sorry, I don't have any dishes for this combination."

    return "I'm not sure how to help with that. Would you like to start over?"