from flask import Blueprint, render_template, request, session, jsonify, redirect, url_for
import os
import base64
import logging
from salesforce import get_salesforce_connection

# Configure logging
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger(__name__)

menu_blueprint = Blueprint('menu', __name__)

# Initialize Salesforce connection
sf = get_salesforce_connection()

# Constants for video handling
STATIC_DIR = os.path.join(os.path.dirname(__file__), 'static')
PLACEHOLDER_VIDEO = 'placeholder.mp4'
PLACEHOLDER_PATH = os.path.join(STATIC_DIR, PLACEHOLDER_VIDEO)
SECTION_ORDER = ["Best Sellers", "Starters", "Biryanis", "Curries", "Breads", "Customized dish", "Apetizer", "Desserts", "Soft Drinks"]

# Create placeholder video at startup if it doesn't exist
if not os.path.exists(PLACEHOLDER_PATH):
    with open(PLACEHOLDER_PATH, 'wb') as f:
        f.close()
    logger.info(f"Created placeholder video at {PLACEHOLDER_PATH}")

def get_valid_video_path(item_name, video_url=None):
    """Get valid video path for item with placeholder fallback."""
    if video_url:
        if video_url.startswith(('http://', 'https://')):
            return video_url
        elif video_url.startswith('/'):
            return video_url
        elif video_url.startswith('069'):
            return f"https://biryanihub-dev-ed.develop.my.salesforce.com/sfc/servlet.shepherd/version/download/{video_url}"
    if not os.path.exists(PLACEHOLDER_PATH):
        with open(PLACEHOLDER_PATH, 'wb') as f:
            f.close()
        logger.info(f"Created missing placeholder video at {PLACEHOLDER_PATH}")
    return f"/static/{PLACEHOLDER_VIDEO}"

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

    # Handle user authentication
    if not user_email:
        user_email = request.args.get("email")
        user_name = request.args.get("name")
        if user_email and user_name:
            session['user_email'] = user_email
            session['user_name'] = user_name
        else:
            return redirect(url_for("login"))
    else:
        user_name = session.get('user_name')

    first_letter = user_name[0].upper() if user_name else "A"
    user_image = session.get('user_image')

    try:
        describe_result = sf.Customer_Login__c.describe()
        fields = [field['name'] for field in describe_result['fields']]
        avatar_field_exists = 'Avatar__c' in fields
    except Exception as e:
        logger.error(f"Error describing Customer_Login__c object: {str(e)}")
        avatar_field_exists = False

    query_fields = ["Id", "Referral__c", "Reward_Points__c"]
    if avatar_field_exists:
        query_fields.append("Avatar__c")
    user_query = f"SELECT {', '.join(query_fields)} FROM Customer_Login__c WHERE Email__c = '{user_email}'"

    try:
        user_result = sf.query(user_query)
        if not user_result.get('records'):
            logger.warning(f"No user found with email: {user_email}")
            return redirect(url_for('login'))
    except Exception as e:
        logger.error(f"Error querying user data: {str(e)}")
        return jsonify({"success": False, "error": "Failed to fetch user data from Salesforce"}), 500

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

    if not user_image and avatar_field_exists and user_record.get('Avatar__c'):
        session['user_image'] = user_record['Avatar__c']
        user_image = session['user_image']

    cart_query = f"SELECT COUNT() FROM Cart_Item__c WHERE Customer_Email__c = '{user_email}'"
    try:
        cart_count_result = sf.query(cart_query)
        cart_item_count = cart_count_result.get('totalSize', 0)
    except Exception as e:
        logger.error(f"Error fetching cart item count: {str(e)}")
        cart_item_count = 0

    menu_query = """
        SELECT Name, Price__c, Description__c, Image1__c, Image2__c, 
               Veg_NonVeg__c, Section__c, Total_Ordered__c, Video1__c,
               IngredientsInfo__c, NutritionalInfo__c, Allergens__c
        FROM Menu_Item__c
    """
    try:
        menu_result = sf.query_all(menu_query)
        food_items = menu_result.get('records', [])
    except Exception as e:
        logger.error(f"Error fetching menu items: {str(e)}")
        food_items = []

    for item in food_items:
        item['Total_Ordered__c'] = item.get('Total_Ordered__c', 0) or 0
        item['Video1__c'] = get_valid_video_path(item['Name'], item.get('Video1__c'))
        item['Section__c'] = item.get('Section__c', "Others")
        item['Description__c'] = item.get('Description__c', "No description available")
        item['IngredientsInfo__c'] = item.get('IngredientsInfo__c', "Not specified")
        item['NutritionalInfo__c'] = item.get('NutritionalInfo__c', "Not available")
        item['Allergens__c'] = item.get('Allergens__c', "None listed")
        item['is_menu_item'] = True

    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
    """
    try:
        custom_dish_result = sf.query_all(custom_dish_query)
        custom_dishes = custom_dish_result.get('records', [])
    except Exception as e:
        logger.error(f"Error fetching custom dishes: {str(e)}")
        custom_dishes = []

    for item in custom_dishes:
        item['Total_Ordered__c'] = item.get('Total_Ordered__c', 0) or 0
        item['Video1__c'] = get_valid_video_path(item['Name'])
        item['Section__c'] = item.get('Section__c', "Customized dish")
        item['Description__c'] = item.get('Description__c', "No description available")
        item['is_menu_item'] = False

    all_items = food_items + custom_dishes
    ordered_menu = {section: [] for section in SECTION_ORDER}

    best_sellers = sorted(all_items, key=lambda x: x['Total_Ordered__c'], 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"]]
    ordered_menu["Best Sellers"] = best_sellers[:4]

    added_item_names = set()
    for item in all_items:
        section = item['Section__c']
        if section not in ordered_menu:
            ordered_menu[section] = []

        if item['Name'] in added_item_names:
            continue

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

        ordered_menu[section].append(item)
        added_item_names.add(item['Name'])

    ordered_menu = {section: items for section, items in ordered_menu.items() if items}
    categories = ["All", "Veg", "Non veg"]

    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,
        first_letter=first_letter,
        cart_item_count=cart_item_count,
        user_image=user_image,
        user_id=user_id
    )

@menu_blueprint.route('/search', methods=['GET'])
def search():
    user_email = session.get('user_email')
    if not user_email:
        return redirect(url_for("login"))

    user_name = session.get('user_name')
    first_letter = user_name[0].upper() if user_name else "A"
    user_image = session.get('user_image')

    # Get cart item count
    cart_query = f"SELECT COUNT() FROM Cart_Item__c WHERE Customer_Email__c = '{user_email}'"
    try:
        cart_count_result = sf.query(cart_query)
        cart_item_count = cart_count_result.get('totalSize', 0)
    except Exception as e:
        logger.error(f"Error fetching cart item count: {str(e)}")
        cart_item_count = 0

    # Fetch all menu items for search functionality
    menu_query = """
        SELECT Name, Price__c, Description__c, Image1__c, Image2__c, 
               Veg_NonVeg__c, Section__c, Total_Ordered__c, Video1__c,
               IngredientsInfo__c, NutritionalInfo__c, Allergens__c
        FROM Menu_Item__c
    """
    try:
        menu_result = sf.query_all(menu_query)
        food_items = menu_result.get('records', [])
    except Exception as e:
        logger.error(f"Error fetching menu items: {str(e)}")
        food_items = []

    for item in food_items:
        item['Total_Ordered__c'] = item.get('Total_Ordered__c', 0) or 0
        item['Video1__c'] = get_valid_video_path(item['Name'], item.get('Video1__c'))
        item['Section__c'] = item.get('Section__c', "Others")
        item['Description__c'] = item.get('Description__c', "No description available")
        item['IngredientsInfo__c'] = item.get('IngredientsInfo__c', "Not specified")
        item['NutritionalInfo__c'] = item.get('NutritionalInfo__c', "Not available")
        item['Allergens__c'] = item.get('Allergens__c', "None listed")
        item['is_menu_item'] = True

    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
    """
    try:
        custom_dish_result = sf.query_all(custom_dish_query)
        custom_dishes = custom_dish_result.get('records', [])
    except Exception as e:
        logger.error(f"Error fetching custom dishes: {str(e)}")
        custom_dishes = []

    for item in custom_dishes:
        item['Total_Ordered__c'] = item.get('Total_Ordered__c', 0) or 0
        item['Video1__c'] = get_valid_video_path(item['Name'])
        item['Section__c'] = item.get('Section__c', "Customized dish")
        item['Description__c'] = item.get('Description__c', "No description available")
        item['is_menu_item'] = False

    all_items = food_items + custom_dishes

    return render_template(
        "search.html",
        all_items=all_items,
        user_name=user_name,
        first_letter=first_letter,
        cart_item_count=cart_item_count,
        user_image=user_image
    )

# Existing routes remain unchanged...

@menu_blueprint.route('/upload_avatar', methods=['POST'])
def upload_avatar():
    # ... (unchanged)
    pass

@menu_blueprint.route('/delete_avatar', methods=['POST'])
def delete_avatar():
    # ... (unchanged)
    pass

@menu_blueprint.route('/api/addons', methods=['GET'])
def get_addons():
    # ... (unchanged)
    pass

@menu_blueprint.route('/cart/add', methods=['POST'])
def add_to_cart():
    # ... (unchanged)
    pass