from flask import Blueprint, render_template, request, redirect, url_for, session
from salesforce import get_salesforce_connection  # Import the function to get Salesforce connection


# Create a Blueprint for the menu page
menu_page = Blueprint('menu_page', __name__)
print("Menu page is connected")

# Initialize Salesforce connection in Menu_page.py
sf = get_salesforce_connection()

@menu_page.route("/menu", methods=["GET", "POST"])
def menu():
    selected_category = request.args.get("category", "All")
    user_email = session.get('user_email')

    if not user_email:
        user_email = request.args.get("email")
        user_name = request.args.get("name")

        if user_email:
            session['user_email'] = user_email
            session['user_name'] = user_name  # Store name in session
        else:
            return redirect(url_for("login"))
    else:
        user_name = session.get('user_name')  # Get name from session if it's already stored

    # Get the first letter of the user's name (make it uppercase for consistency)
    first_letter = user_name[0].upper() if user_name else "A"

    try:
        # Fetch user referral and reward points
        user_query = f"SELECT Referral__c, Reward_Points__c FROM Customer_Login__c WHERE Email__c = '{user_email}'"
        user_result = sf.query(user_query)

        if not user_result['records']:
            return redirect(url_for('login'))

        referral_code = user_result['records'][0].get('Referral__c', 'N/A')
        reward_points = user_result['records'][0].get('Reward_Points__c', 0)

        # Query to fetch Menu_Item__c records including Total_Ordered__c for best sellers
        menu_query = """
            SELECT Name, Price__c, Description__c, Image1__c, Image2__c, Veg_NonVeg__c, Section__c, Total_Ordered__c 
            FROM Menu_Item__c
        """
        result = sf.query(menu_query)
        food_items = result['records'] if 'records' in result else []

        # Ensure Total_Ordered__c has a valid value
        for item in food_items:
            if 'Total_Ordered__c' not in item or item['Total_Ordered__c'] is None:
                item['Total_Ordered__c'] = 0  # Default value

        # Query to fetch Custom_Dish__c records created within the last 7 days with Total_Ordered__c > 10
        custom_dish_query = """
            SELECT Name, Price__c, Description__c, Image1__c, Image2__c, Veg_NonVeg__c, Section__c, Total_Ordered__c 
            FROM Custom_Dish__c
            WHERE CreatedDate >= LAST_N_DAYS:7
        """
        custom_dish_result = sf.query(custom_dish_query)
        custom_dishes = custom_dish_result['records'] if 'records' in custom_dish_result else []

        # Merge both Menu_Item__c and Custom_Dish__c records into the ordered menu
        all_items = food_items + custom_dishes

        # Define the order of sections, adding "Best Sellers" at the top
        section_order = ["Best Sellers", "Starters", "Biryanis", "Curries", "Breads", "Customized dish", "Apetizer", "Desserts", "Soft Drinks"]
        ordered_menu = {section: [] for section in section_order}

        # Sort items by Total_Ordered__c in descending order and pick top 4 as best sellers
        best_sellers = sorted(all_items, key=lambda x: x.get("Total_Ordered__c", 0), reverse=True)

        if selected_category == "Veg":
            best_sellers = [item for item in best_sellers if item.get("Veg_NonVeg__c") in ["Veg", "both"]]
        elif selected_category == "Non veg":
            best_sellers = [item for item in best_sellers if item.get("Veg_NonVeg__c") in ["Non veg", "both"]]

        # Take only the top 4 best sellers after filtering
        best_sellers = best_sellers[:4]

        # Ensure "Best Sellers" is added only if there are items after filtering
        if best_sellers:
            ordered_menu["Best Sellers"] = best_sellers

        # Create a set to track item names already added to prevent duplicates
        added_item_names = set()

        # Filter and organize menu items based on category and section (to avoid duplicates)
        for item in all_items:
            section = item.get("Section__c", "Others")  # Default to "Others" if missing
            if section not in ordered_menu:
                ordered_menu[section] = []

            # Skip item if it's already been added to avoid duplicates
            if item['Name'] in added_item_names:
                continue

            # Apply category filters
            if selected_category == "Veg" and item.get("Veg_NonVeg__c") not in ["Veg", "both"]:
                continue
            if selected_category == "Non veg" and item.get("Veg_NonVeg__c") not in ["Non veg", "both"]:
                continue

            ordered_menu[section].append(item)
            added_item_names.add(item['Name'])  # Add item to the set of added items
            print(f"Added item to {section}: {item['Name']}")  # Debugging

        # Remove empty sections
        ordered_menu = {section: items for section, items in ordered_menu.items() if items}
        print(f"Final ordered menu: {ordered_menu.keys()}")  # Debugging

        categories = ["All", "Veg", "Non veg"]

    except Exception as e:
        print(f"Error fetching menu data: {str(e)}")
        ordered_menu = {}
        categories = ["All", "Veg", "Non veg"]
        referral_code = 'N/A'
        reward_points = 0

    # Pass the user's first letter (first_letter) to the template
    return render_template(
        "menu.html",
        ordered_menu=ordered_menu,
        categories=categories,
        selected_category=selected_category,
        referral_code=referral_code,
        reward_points=reward_points,
        user_name=user_name,  # Pass name to the template
        first_letter=first_letter  # Pass first letter to the template
    )