import bcrypt
import gradio as gr
from datetime import datetime

from simple_salesforce import Salesforce

# Salesforce Connection
sf = Salesforce(username='diggavalli98@gmail.com', password='Sati@1020', security_token='sSSjyhInIsUohKpG8sHzty2q')

# Function to Hash Password
def hash_password(password):
    return bcrypt.hashpw(password.encode('utf-8'), bcrypt.gensalt()).decode('utf-8')

# Function to Verify Password
def verify_password(plain_password, hashed_password):
    return bcrypt.checkpw(plain_password.encode('utf-8'), hashed_password.encode('utf-8'))

# Signup function
def signup(name, email, phone, password):
    try:
        email = email.strip()
        query = f"SELECT Id FROM Customer_Login__c WHERE Email__c = '{email}'"
        result = sf.query(query)

        if len(result['records']) > 0:
            return "Email already exists! Please use a different email."

        hashed_password = hash_password(password)

        sf.Customer_Login__c.create({
            'Name': name.strip(),
            'Email__c': email,
            'Phone_Number__c': phone.strip(),
            'Password__c': hashed_password
        })
        return "Signup successful! You can now login."
    except Exception as e:
        return f"Error during signup: {str(e)}"

# Login function
def login(email, password):
    try:
        email = email.strip()
        query = f"SELECT Name, Password__c FROM Customer_Login__c WHERE Email__c = '{email}'"
        result = sf.query(query)

        if len(result['records']) == 0:
            return "Invalid email or password.", None

        user = result['records'][0]
        stored_password = user['Password__c']

        if verify_password(password.strip(), stored_password):
            return "Login successful!", user['Name']
        else:
            return "Invalid email or password.", None
    except Exception as e:
        return f"Error during login: {str(e)}", None

# Function to load menu data
def load_menu_from_salesforce():
    try:
        query = "SELECT Name, Price__c, Description__c, Image1__c, Image2__c, Veg_NonVeg__c, Section__c FROM Menu_Item__c"
        result = sf.query(query)
        return result['records']
    except Exception as e:
        return []

# Function to load add-ons data
def load_add_ons_from_salesforce():
    try:
        query = "SELECT Name, Price__c FROM Add_Ons__c"
        result = sf.query(query)
        return result['records']
    except Exception as e:
        return []
# Function to save cart summary in Salesforce
def save_cart_summary_to_salesforce(cart_data, total_cost):
    try:
        # Log input data for debugging
        print("Saving Cart Data:", cart_data)
        print("Total Cost:", total_cost)

        # Validate inputs
        if not cart_data or total_cost <= 0:
            return "Cart is empty or total cost is invalid."

        # Create the Order record
        order_record = {
            'Name': f"Order {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}",
            'Total_Cost__c': total_cost,
            'Order_Date__c': datetime.now().isoformat()
        }
        order_result = sf.Order__c.create(order_record)
        order_id = order_result['id']

        # Create Order Item records
        for item in cart_data:
            extras = ", ".join(extra['name'] for extra in item.get('extras', []))
            order_item_record = {
                'Name': item['name'],
                'Order__c': order_id,
                'Quantity__c': item['quantity'],
                'Price__c': item['price'],
                'Extras__c': extras,
                'Instructions__c': item.get('instructions', ''),
                'Total_Cost__c': item['totalCost']
            }
            sf.Order_Item__c.create(order_item_record)

        return "Order and items saved successfully in Salesforce!"
    except Exception as e:
        print(f"Error saving order in Salesforce: {str(e)}")
        return f"Error saving order in Salesforce: {str(e)}"


# Function to filter menu items
def filter_menu(preference):
    menu_data = load_menu_from_salesforce()

    filtered_data = {}
    for item in menu_data:
        if "Section__c" not in item or "Veg_NonVeg__c" not in item:
            continue

        if item["Section__c"] not in filtered_data:
            filtered_data[item["Section__c"]] = []

        if preference == "All" or (preference == "Veg" and item["Veg_NonVeg__c"] in ["Veg", "Both"]) or (preference == "Non-Veg" and item["Veg_NonVeg__c"] in ["Non veg", "Both"]):
            filtered_data[item["Section__c"].strip()].append(item)

    html_content = '<div style="padding: 0 10px; max-width: 1200px; margin: auto;">'
    for section, items in filtered_data.items():
        html_content += f"<h2 style='text-align: center; margin-top: 5px;'>{section}</h2>"
        html_content += '<div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; justify-content: center; margin-top: 10px;">'
        for item in items:
            html_content += f"""
            <div style="border: 1px solid #ddd; border-radius: 10px; box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.1); overflow: hidden; height: 350px;">
                <img src="{item.get('Image1__c', '')}" style="width: 100%; height: 200px; object-fit: cover;" 
                onclick="openModal('{item['Name']}', '{item.get('Image2__c', '')}', '{item['Description__c']}', '${item['Price__c']}')">
                <div style="padding: 10px;">
                    <h3 style='font-size: 1.2em; text-align: center;'>{item['Name']}</h3>
                    <p style='font-size: 1.1em; color: green; text-align: center;'>${item['Price__c']}</p>
                    <p style='font-size: 0.9em; text-align: justify; margin: 5px;'>{item['Description__c']}</p>
                </div>
            </div>
            """
        html_content += '</div>'
    html_content += '</div>'

    if not any(filtered_data.values()):
        return "<p>No items match your filter.</p>"

    return html_content

# Create Modal Window HTML
def create_modal_window():
    add_ons = load_add_ons_from_salesforce()
    add_ons_html = ""
    for add_on in add_ons:
        add_ons_html += f"""
        <label>
            <input type="checkbox" name="biryani-extra" value="{add_on['Name']}" data-price="{add_on['Price__c']}" />
            {add_on['Name']} + ${add_on['Price__c']}
        </label>
        <br>
        """

    modal_html = f"""
    <div id="modal" style="display: none; position: fixed; background: white; border-radius: 8px; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); padding: 20px; z-index: 1000;">
        <div style="text-align: right;">
            <button onclick="closeModal()" style="background: none; border: none; font-size: 18px; cursor: pointer;">&times;</button>
        </div>
        <img id="modal-image" style="width: 100%; height: 300px; border-radius: 8px; margin-bottom: 20px;" />
        <h2 id="modal-name"></h2>
        <p id="modal-description"></p>
        <p id="modal-price"></p>
        <label for="biryani-extras"><strong>Add-ons :</strong></label>
        <div id="biryani-extras-options" style="display: flex; flex-wrap: wrap; gap: 10px; margin: 10px 0;">
            {add_ons_html}
        </div>
        <label for="quantity">Quantity:</label>
        <input type="number" id="quantity" value="1" min="1" style="width: 50px;" />
        <textarea id="special-instructions" placeholder="Add your special instructions here..." style="width: 100%; height: 60px;"></textarea>
        <button style="background-color: #28a745; color: white; border: none; padding: 10px 20px; font-size: 14px; border-radius: 5px; cursor: pointer;" onclick="addToCart()">Add to Cart</button>
    </div>
    <div id="cart-modal" style="display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: white; z-index: 1000; overflow-y: auto;">
        <div style="padding: 20px;">
            <div style="text-align: right;">
                <button onclick="closeCartModal()" style="background: none; border: none; font-size: 24px; cursor: pointer;">&times;</button>
            </div>
            <h1>Your Cart</h1>
            <div id="cart-items"></div>
            <p id="cart-total-cost" style="font-size: 1.2em; font-weight: bold;">Total Cart Cost: $0.00</p>
            <div id="order-summary" style="margin-top: 20px;">
                <h2>Final Order Summary:</h2>
                <div id="final-order-summary"></div>
                <p><strong>Total Bill: $<span id="total-bill"></span></strong></p>
            </div>
            <button style="background: #ff5722; color: white; padding: 10px 20px; border-radius: 5px; border: none; cursor: pointer;" onclick="proceedToCheckout()">Proceed to Checkout</button>
        </div>
    </div>
    """
    return modal_html

# JavaScript for Modal and Cart
def modal_js():
    modal_script = """
    <script>
        let cart = [];
        let totalCartCost = 0;
        function openModal(name, image2, description, price) {
            const modal = document.getElementById('modal');
            modal.style.display = 'block';
            modal.style.position = 'fixed';
            modal.style.width = window.innerWidth <= 768 ? '90%' : '30%';
            modal.style.top = `${event.clientY}px`;
            modal.style.left = '50%';
            modal.style.transform = 'translate(-50%, -50%)';
            document.getElementById('modal-image').src = image2;
            document.getElementById('modal-name').innerText = name;
            document.getElementById('modal-description').innerText = description;
            document.getElementById('modal-price').innerText = price;
            document.getElementById('quantity').value = 1;
            document.getElementById('special-instructions').value = '';
            resetAddOns();  // Reset add-ons when opening the modal
        }
        function closeModal() {
            document.getElementById('modal').style.display = 'none';
        }
        function addToCart() {
            const name = document.getElementById('modal-name').innerText;
            const price = parseFloat(document.getElementById('modal-price').innerText.replace('$', ''));
            const quantity = parseInt(document.getElementById('quantity').value) || 1;
            const instructions = document.getElementById('special-instructions').value;
            const selectedAddOns = Array.from(document.querySelectorAll('input[name="biryani-extra"]:checked'));
            const extras = selectedAddOns.map(extra => ({
                name: extra.value,
                price: parseFloat(extra.getAttribute('data-price')),
                quantity: 1  // Default quantity for add-ons is 1
            }));
            const extrasCost = extras.reduce((total, extra) => total + (extra.price * extra.quantity), 0);
            const totalCost = (price * quantity) + extrasCost;
            // Add the item to the cart with its specific add-ons
            cart.push({ name, price, quantity, extras, instructions, totalCost });
            totalCartCost += totalCost;  // Update the total cost of the cart
            updateCartButton();
            updateCartTotalCost();  // Update total cost displayed
            closeModal();
        }
        function updateCartButton() {
            const cartButton = document.getElementById('cart-button');
            cartButton.innerText = `View Cart (${cart.length} items)`;
        }
        function openCartModal() {
            const cartModal = document.getElementById('cart-modal');
            const cartItemsContainer = document.getElementById('cart-items');
            cartItemsContainer.innerHTML = "";
            cart.forEach((item, index) => {
                const extrasList = item.extras.map(extra => `${extra.name} x<input type="number" value="${extra.quantity}" min="1" style="width: 50px;" onchange="updateCartItem(${index}, 'extra', this.value)" /> (+$${(extra.price * extra.quantity).toFixed(2)})`).join(', ');
                cartItemsContainer.innerHTML += `
                    <div style="border: 1px solid #ddd; padding: 10px; margin-bottom: 10px; border-radius: 8px;">
                        <h3>${item.name}</h3>
                        <p>Quantity: <input type="number" value="${item.quantity}" min="1" style="width: 50px;" onchange="updateCartItem(${index}, 'item', this.value)" /></p>
                        <p>Extras: ${extrasList || 'None'}</p>
                        <p>Special Instructions: ${item.instructions || 'None'}</p>
                        <p>Total Cost: $<span id="item-${index}-total">${item.totalCost.toFixed(2)}</span></p>
                        <button onclick="removeFromCart(${index})" style="color: red;">Remove</button>
                    </div>
                `;
            });
            cartModal.style.display = 'block';
        }
        function closeCartModal() {
            document.getElementById('cart-modal').style.display = 'none';
        }
        function removeFromCart(index) {
            totalCartCost -= cart[index].totalCost;  // Deduct the cost of the removed item from total cost
            cart.splice(index, 1);
            updateCartButton();
            updateCartTotalCost();  // Update total cost displayed
            openCartModal();
        }
        function updateCartItem(index, type, value) {
            if (type === 'item') {
                cart[index].quantity = parseInt(value);
            } else if (type === 'extra') {
                cart[index].extras[0].quantity = parseInt(value); // Assuming one add-on for simplicity
            }
            const item = cart[index];
            const price = item.price;
            const extrasCost = item.extras.reduce((total, extra) => total + (extra.price * extra.quantity), 0);
            item.totalCost = (price * item.quantity) + extrasCost;
            document.getElementById(`item-${index}-total`).innerText = item.totalCost.toFixed(2);
            updateCartTotalCost();  // Update total cost displayed
        }
        function updateCartTotalCost() {
            const totalCostElement = document.getElementById('cart-total-cost');
            totalCartCost = cart.reduce((total, item) => total + item.totalCost, 0);
            totalCostElement.innerText = `Total Cart Cost: $${totalCartCost.toFixed(2)}`;
        }
        function proceedToCheckout() {
            const cartSummary = cart.map(item => ({
                name: item.name,
                quantity: item.quantity,
                price: item.price,
                extras: item.extras.map(extra => ({ name: extra.name, price: extra.price, quantity: extra.quantity })),
                instructions: item.instructions,
                totalCost: item.totalCost
            }));
    
    // Use Gradio's Python function to send cart data to Salesforce
            const gradioCall = async () => {
                const response = await gradio.callPython({
                    function_name: "save_cart_summary_to_salesforce",
                    args: [cartSummary, totalCartCost],
                });
                alert(response.data); // Show success/error message
            };
            gradioCall();

    // Display summary in the cart modal
            const cartSummaryHtml = cart.map(item => `
                ${item.name} (x${item.quantity}) - $${item.totalCost.toFixed(2)}
                Extras: ${item.extras.map(extra => extra.name).join(', ') || 'None'}
                Instructions: ${item.instructions || 'None'}
            `).join('<br>');
            document.getElementById('final-order-summary').innerHTML = cartSummaryHtml;
            document.getElementById('total-bill').innerText = totalCartCost.toFixed(2);
            openCartModal();
        }

        // Reset all selected add-ons when opening a new item modal
        function resetAddOns() {
            const checkboxes = document.querySelectorAll('input[name="biryani-extra"]');
            checkboxes.forEach(checkbox => checkbox.checked = false);  // Uncheck all add-ons
        }
    </script>
    """
    return modal_script

# Gradio App
with gr.Blocks() as app:
    with gr.Row():
        gr.HTML("<h1 style='text-align: center;'>Welcome to Biryani Hub</h1>")

    with gr.Row(visible=True) as login_page:
        with gr.Column():
            login_email = gr.Textbox(label="Email")
            login_password = gr.Textbox(label="Password", type="password")
            login_button = gr.Button("Login")
            signup_button = gr.Button("Go to Signup")
            login_output = gr.Textbox(label="Status")

    with gr.Row(visible=False) as signup_page:
        with gr.Column():
            signup_name = gr.Textbox(label="Name")
            signup_email = gr.Textbox(label="Email")
            signup_phone = gr.Textbox(label="Phone")
            signup_password = gr.Textbox(label="Password", type="password")
            submit_signup = gr.Button("Signup")
            login_redirect = gr.Button("Go to Login")
            signup_output = gr.Textbox(label="Status")

    with gr.Row(visible=False) as menu_page:
        with gr.Column():
            preference = gr.Radio(choices=["All", "Veg", "Non-Veg"], label="Filter Preference", value="All")
            menu_output = gr.HTML()
            gr.HTML("<div id='cart-button' style='position: fixed; top: 20px; right: 20px; background: #28a745; color: white; padding: 10px 20px; border-radius: 30px; cursor: pointer; z-index: 1000;' onclick='openCartModal()'>View Cart</div>")
            gr.HTML("<div id='cart-modal' style='display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: white; z-index: 1000; overflow-y: auto;'><div style='padding: 20px;'><div style='text-align: right;'><button onclick='closeCartModal()' style='background: none; border: none; font-size: 24px; cursor: pointer;'>&times;</button></div><h1>Your Cart</h1><div id='cart-items'></div><p id='cart-total-cost' style='font-size: 1.2em; font-weight: bold;'>Total Cart Cost: $0.00</p><div id='order-summary'><h2>Final Order Summary:</h2><div id='final-order-summary'></div><p><strong>Total Bill: $<span id='total-bill'></span></strong></p></div><button style='background: #ff5722; color: white; padding: 10px 20px; border-radius: 5px; border: none; cursor: pointer;' onclick='proceedToCheckout()'>Proceed to Checkout</button></div></div>")
            gr.HTML(create_modal_window())
            gr.HTML(modal_js())



    login_button.click(
        lambda email, password: (gr.update(visible=False), gr.update(visible=True), gr.update(value=filter_menu("All")), "Login successful!")
        if login(email, password)[0] == "Login successful!" else (gr.update(), gr.update(), gr.update(), "Invalid email or password."),
        [login_email, login_password], [login_page, menu_page, menu_output, login_output]
    )
    submit_signup.click(
        lambda name, email, phone, password: signup(name, email, phone, password),
        inputs=[signup_name, signup_email, signup_phone, signup_password],
        outputs=signup_output
    )

    signup_button.click(
        lambda: (gr.update(visible=False), gr.update(visible=True)),
        inputs=[],
        outputs=[login_page, signup_page]
    )

    login_redirect.click(
        lambda: (gr.update(visible=True), gr.update(visible=False)),
        inputs=[],
        outputs=[login_page, signup_page]
    )
    preference.change(lambda pref: filter_menu(pref), [preference], menu_output)

app.launch()