Enhanced PHP File Manager

⬆️ Go Up (..)

📊 Server Information

Server:

LiteSpeed

System:

Linux 5.14.0-503.34.1.el9_5.x86_64

PHP Version:

8.2.30

User:

u329947844

Directory:

/home/u329947844/domains/ecommer.in/public_html/billing/printing

Free Space:

10.27 TB

🔧 Quick Actions

✏️ Editing: new-bill.php

<?php
// new-bill.php
session_start();
require_once 'includes/db.php';

$message = '';

// Handle form submission
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // Customer details
    $customer_name = trim($_POST['customer_name'] ?? '');
    $customer_phone = trim($_POST['customer_phone'] ?? '');
    
    // Bill details
    $bill_date = $_POST['bill_date'] ?? date('Y-m-d');
    $due_date = $_POST['due_date'] ?? date('Y-m-d');
    $status = $_POST['status'] ?? 'paid'; // Payment status
    
    // Products data
    $products = $_POST['products'] ?? [];
    $discount = floatval($_POST['discount'] ?? 0); // Now flat discount
    
    // Check if save and print or just save
    $save_action = $_POST['save_action'] ?? 'save';
    
    // Validation
    $errors = [];
    if (empty($customer_phone)) $errors[] = "Customer phone is required.";
    if (empty($products)) $errors[] = "At least one product is required.";
    
    // Validate products
    foreach ($products as $index => $product) {
        if (empty($product['product_id']) || empty($product['quantity'])) {
            $errors[] = "Please fill all product details for item " . ($index + 1);
        }
        // Check if measurement products have height and width
        $product_id = intval($product['product_id']);
        $product_sql = "SELECT unit FROM products WHERE id = ?";
        $product_stmt = mysqli_prepare($conn, $product_sql);
        mysqli_stmt_bind_param($product_stmt, "i", $product_id);
        mysqli_stmt_execute($product_stmt);
        $product_data = mysqli_fetch_assoc(mysqli_stmt_get_result($product_stmt));
        
        if (($product_data['unit'] == 'sqft' || $product_data['unit'] == 'ft') && (empty($product['height']) || empty($product['width']))) {
            $errors[] = "Please enter height and width for measurement-based product " . ($index + 1);
        }
    }
    
    if (empty($errors)) {
        mysqli_begin_transaction($conn);
        
        try {
            // Check if customer exists
            $customer_sql = "SELECT id, name FROM customers WHERE phone = ?";
            $customer_stmt = mysqli_prepare($conn, $customer_sql);
            mysqli_stmt_bind_param($customer_stmt, "s", $customer_phone);
            mysqli_stmt_execute($customer_stmt);
            $customer_result = mysqli_stmt_get_result($customer_stmt);
            $existing_customer = mysqli_fetch_assoc($customer_result);
            
            if ($existing_customer) {
                $customer_id = $existing_customer['id'];
                // If customer name is provided and different, update it
                if (!empty($customer_name) && $customer_name != $existing_customer['name']) {
                    $update_customer_sql = "UPDATE customers SET name = ? WHERE id = ?";
                    $update_stmt = mysqli_prepare($conn, $update_customer_sql);
                    mysqli_stmt_bind_param($update_stmt, "si", $customer_name, $customer_id);
                    mysqli_stmt_execute($update_stmt);
                } else {
                    // Use existing customer name if not provided
                    $customer_name = $existing_customer['name'];
                }
            } else {
                // Insert new customer (name is optional)
                $insert_customer_sql = "INSERT INTO customers (name, phone, created_at) VALUES (?, ?, NOW())";
                $insert_stmt = mysqli_prepare($conn, $insert_customer_sql);
                mysqli_stmt_bind_param($insert_stmt, "ss", $customer_name, $customer_phone);
                mysqli_stmt_execute($insert_stmt);
                $customer_id = mysqli_insert_id($conn);
            }
            
            // Calculate bill total
            $subtotal = 0;
            foreach ($products as $product) {
                $product_id = intval($product['product_id']);
                $height = floatval($product['height'] ?? 0);
                $width = floatval($product['width'] ?? 0);
                $quantity = floatval($product['quantity']);
                $custom_price = floatval($product['custom_price'] ?? 0);
                $custom_amount = floatval($product['custom_amount'] ?? 0);
                
                // Get product details
                $product_sql = "SELECT price, unit, quantity_unit FROM products WHERE id = ?";
                $product_stmt = mysqli_prepare($conn, $product_sql);
                mysqli_stmt_bind_param($product_stmt, "i", $product_id);
                mysqli_stmt_execute($product_stmt);
                $product_data = mysqli_fetch_assoc(mysqli_stmt_get_result($product_stmt));
                
                // Use custom price if provided, otherwise use product price
                $unit_price = $custom_price > 0 ? $custom_price : $product_data['price'];
                
                // Calculate area and amount based on unit
                if ($product_data['unit'] == 'sqft') {
                    $area = $height * $width; // Height and width are already in feet
                    $amount = $custom_amount > 0 ? $custom_amount : ($area * $unit_price * $quantity);
                } elseif ($product_data['unit'] == 'ft') {
                    $area = ($height + $width) * 2; // Perimeter in feet
                    $amount = $custom_amount > 0 ? $custom_amount : ($area * $unit_price * $quantity);
                } else {
                    $area = $quantity; // For piece, sheet, set, etc.
                    $amount = $custom_amount > 0 ? $custom_amount : ($unit_price * $quantity); // Simple: price × quantity
                }
                
                $subtotal += $amount;
            }
            
            $discount_amount = $discount; // Flat discount
            $total_amount = $subtotal - $discount_amount;
            
            // Insert bill with selected status
            $bill_sql = "INSERT INTO bills (customer_id, customer_name, customer_phone, 
                         bill_date, due_date, subtotal, discount, total_amount, status, created_at) 
                         VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, NOW())";
            $bill_stmt = mysqli_prepare($conn, $bill_sql);
            mysqli_stmt_bind_param($bill_stmt, "issssddds", $customer_id, $customer_name, $customer_phone, 
                                 $bill_date, $due_date, $subtotal, $discount, $total_amount, $status);
            mysqli_stmt_execute($bill_stmt);
            $bill_id = mysqli_insert_id($conn);
            
            // Insert bill products and update stock
            foreach ($products as $product) {
                $product_id = intval($product['product_id']);
                $height = floatval($product['height'] ?? 0);
                $width = floatval($product['width'] ?? 0);
                $quantity = floatval($product['quantity']);
                $custom_price = floatval($product['custom_price'] ?? 0);
                $custom_amount = floatval($product['custom_amount'] ?? 0);
                
                // Get product details again for accurate pricing
                $product_sql = "SELECT price, unit, quantity_unit FROM products WHERE id = ?";
                $product_stmt = mysqli_prepare($conn, $product_sql);
                mysqli_stmt_bind_param($product_stmt, "i", $product_id);
                mysqli_stmt_execute($product_stmt);
                $product_data = mysqli_fetch_assoc(mysqli_stmt_get_result($product_stmt));
                
                // Use custom price if provided
                $unit_price = $custom_price > 0 ? $custom_price : $product_data['price'];
                
                // Calculate area and amount
                if ($product_data['unit'] === 'sqft') {
                    $area = $height * $width;
                    $amount = $custom_amount > 0 ? $custom_amount : ($area * $unit_price * $quantity);
                } elseif ($product_data['unit'] === 'ft') {
                    $area = ($height + $width) * 2;
                    $amount = $custom_amount > 0 ? $custom_amount : ($area * $unit_price * $quantity);
                } else {
                    $area = $quantity;
                    $amount = $custom_amount > 0 ? $custom_amount : ($unit_price * $quantity);
                }
                
                $bill_product_sql = "INSERT INTO bill_products (bill_id, product_id, height, width, quantity, 
                                   area, unit_price, total_amount) 
                                   VALUES (?, ?, ?, ?, ?, ?, ?, ?)";
                $bill_product_stmt = mysqli_prepare($conn, $bill_product_sql);
                mysqli_stmt_bind_param($bill_product_stmt, "iidddddd", $bill_id, $product_id, $height, $width, 
                                     $quantity, $area, $unit_price, $amount);
                mysqli_stmt_execute($bill_product_stmt);
                
                // Update product stock - reduce based on measurement type
                if ($product_data['unit'] === 'sqft' || $product_data['unit'] === 'ft') {
                    // For measurement products, reduce by calculated area
                    $update_stock_sql = "UPDATE products SET total_quantity = total_quantity - ? WHERE id = ?";
                    $update_stock_stmt = mysqli_prepare($conn, $update_stock_sql);
                    mysqli_stmt_bind_param($update_stock_stmt, "di", $area, $product_id);
                } else {
                    // For piece/sheet/set products, reduce by quantity
                    $update_stock_sql = "UPDATE products SET total_quantity = total_quantity - ? WHERE id = ?";
                    $update_stock_stmt = mysqli_prepare($conn, $update_stock_sql);
                    mysqli_stmt_bind_param($update_stock_stmt, "di", $quantity, $product_id);
                }
                mysqli_stmt_execute($update_stock_stmt);
            }
            
            mysqli_commit($conn);
            
            // Redirect based on save action
            if ($save_action === 'save_print') {
                header('Location: print-invoice.php?id=' . $bill_id);
            } else {
                $_SESSION['message'] = '<div class="alert alert-success">Bill created successfully! Bill ID: ' . $bill_id . '</div>';
                header('Location: new-bill.php');
            }
            exit();
            
        } catch (Exception $e) {
            mysqli_rollback($conn);
            $message = '<div class="alert alert-danger">Error creating bill: ' . $e->getMessage() . '</div>';
        }
    } else {
        $message = '<div class="alert alert-danger"><ul><li>' . implode('</li><li>', $errors) . '</li></ul></div>';
    }
}

// Get active products for dropdown
$products_sql = "SELECT p.id, p.name, p.price, p.unit, p.quantity_unit, c.name as category_name 
                 FROM products p 
                 LEFT JOIN categories c ON p.category_id = c.id 
                 WHERE p.is_active = 1 
                 ORDER BY p.name";
$products_result = mysqli_query($conn, $products_sql);

// Get existing customers for dropdown
$customers_sql = "SELECT id, name, phone FROM customers ORDER BY name";
$customers_result = mysqli_query($conn, $customers_sql);
?>
<!doctype html>
<html lang="en">
<?php include('includes/head.php')?>
<body data-sidebar="dark">
<?php include('includes/pre-loader.php')?>
<div id="layout-wrapper">
    <?php include('includes/topbar.php')?>
    <div class="vertical-menu">
        <div data-simplebar class="h-100">
            <?php include('includes/sidebar.php')?>
        </div>
    </div>

<div class="row align-items-center mb-3">
                    <div class="col-12 d-flex justify-content-between align-items-center flex-wrap gap-2">
                        <h4 class="mb-0">Billing / New Bill</h4>
                        <div class="d-flex flex-wrap gap-2">
                            <a href="manage-orders.php" class="btn btn-secondary btn-sm">Manage Orders</a>
                            <a href="manage-customers.php" class="btn btn-primary btn-sm">Manage Customers</a>
                        </div>
                    </div>
                </div>

<?php echo $message; ?>

<form method="POST" id="billForm">
                    
                    <div class="card mb-4">
                        <div class="card-header bg-light">
                            <h5 class="card-title mb-0">Customer Information</h5>
                        </div>
                        <div class="card-body">
                            <div class="row">
                                <div class="col-md-4">
                                    <div class="mb-3">
                                        <label class="form-label">Customer Name</label>
                                        <input type="text" name="customer_name" id="customerName" class="form-control" 
                                               placeholder="Enter customer name (optional)">
                                    </div>
                                </div>
                                <div class="col-md-4">
                                    <div class="mb-3">
                                        <label class="form-label">Mobile Number <span class="text-danger">*</span></label>
                                        <input type="tel" name="customer_phone" id="customerPhone" class="form-control" 
                                               value="<?php echo htmlspecialchars($_POST['customer_phone'] ?? ''); ?>" 
                                               placeholder="Enter mobile number" required>
                                        <small class="text-muted" id="customerInfo"></small>
                                    </div>
                                </div>
                                <div class="col-md-4">
                                    <div class="mb-3">
                                        <label class="form-label">Find Existing Customer</label>
                                        <select id="customerSelect" class="form-select customer-select">
                                            <option value="">Search customer by phone...</option>
                                        </select>
                                    </div>
                                </div>
                            </div>
                            <div class="row">
                                <div class="col-md-4">
                                    <div class="mb-3">
                                        <label class="form-label">Bill Date</label>
                                        <input type="date" name="bill_date" class="form-control" 
                                               value="<?php echo $_POST['bill_date'] ?? date('Y-m-d'); ?>">
                                    </div>
                                </div>
                                <div class="col-md-4">
                                    <div class="mb-3">
                                        <label class="form-label">Due Date</label>
                                        <input type="date" name="due_date" class="form-control" 
                                               value="<?php echo $_POST['due_date'] ?? date('Y-m-d'); ?>">
                                    </div>
                                </div>
                                <div class="col-md-4">
                                    <div class="mb-3">
                                        <label class="form-label">Discount (₹)</label>
                                        <input type="number" name="discount" class="form-control" 
                                               value="<?php echo $_POST['discount'] ?? 0; ?>" 
                                               min="0" step="1" onchange="calculateTotal()" placeholder="Flat discount">
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

<div class="card mb-4">
                        <div class="card-header bg-light">
                            <h5 class="card-title mb-0">Product Information</h5>
                        </div>
                        <div class="card-body">
                            
                            <div class="row">
                                <div class="col-md-3">
                                    <div class="mb-3">
                                        <label class="form-label">Select Product</label>
                                        <select id="productSelect" class="form-select product-select">
                                            <option value="">Search product...</option>
                                        </select>
                                    </div>
                                </div>
                                <div class="col-md-2">
                                    <div class="mb-3">
                                        <label class="form-label">Height (Feet)</label>
                                        <input type="number" id="productHeight" class="form-control" 
                                               step="1" min="0" placeholder="Enter height">
                                        <small class="text-muted" id="heightUnit">ft</small>
                                    </div>
                                </div>
                                <div class="col-md-2">
                                    <div class="mb-3">
                                        <label class="form-label">Width (Feet)</label>
                                        <input type="number" id="productWidth" class="form-control" 
                                               step="1" min="0" placeholder="Enter width">
                                        <small class="text-muted" id="widthUnit">ft</small>
                                    </div>
                                </div>
                                <div class="col-md-2">
                                    <div class="mb-3">
                                        <label class="form-label">Quantity</label>
                                        <input type="number" id="productQuantity" class="form-control" 
                                               value="1" step="1" min="1" placeholder="Enter quantity">
                                        <small class="text-muted" id="quantityUnit">-</small>
                                    </div>
                                </div>
                                <div class="col-md-3">
                                    <div class="mb-3">
                                        <label class="form-label">Unit Price (₹)</label>
                                        <input type="number" id="productPrice" class="form-control" 
                                               step="1" min="0" placeholder="Enter price">
                                        <small class="text-muted" id="priceUnit">/unit</small>
                                    </div>
                                </div>
                            </div>
                            <div class="row">
                                <div class="col-md-9">
                                    <div class="mb-2">
                                        <small class="text-muted" id="measurementType">Select product first</small>
                                    </div>
                                    <div class="mb-2">
                                        <small class="text-info" id="calculationDetails"></small>
                                    </div>
                                </div>
                                <div class="col-md-3 d-flex align-items-end">
                                    <button type="button" class="btn btn-primary w-100" onclick="addProductToBill()" id="addProductBtn">
                                        <i class="fas fa-plus me-2"></i>Add to Bill
                                    </button>
                                </div>
                            </div>
                        </div>
                    </div>

<div class="card mb-4">
                        <div class="card-header bg-light">
                            <h5 class="card-title mb-0">Billed Items</h5>
                        </div>
                        <div class="card-body">
                            <div class="table-responsive">
                                <table class="table table-bordered" id="productsTable">
                                    <thead class="table-light">
                                        <tr>
                                            <th width="20%">Product</th>
                                            <th width="8%">Height (ft)</th>
                                            <th width="8%">Width (ft)</th>
                                            <th width="8%">Qty</th>
                                            <th width="12%">Unit Price</th>
                                            <th width="12%">Area/Units</th>
                                            <th width="15%">Amount</th>
                                            <th width="17%">Actions</th>
                                        </tr>
                                    </thead>
                                    <tbody id="productsBody">
                                        
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>

<div class="row">
                        
                        <div class="col-lg-4 offset-lg-8">
                            <div class="card">
                                <div class="card-header bg-light">
                                    <h5 class="card-title mb-0">Billing Summary</h5>
                                </div>
                                <div class="card-body">
                                    <div class="row mb-2">
                                        <div class="col-6">Subtotal:</div>
                                        <div class="col-6 text-end" id="subtotal">₹0</div>
                                    </div>
                                    <div class="row mb-2">
                                        <div class="col-6">Discount:</div>
                                        <div class="col-6 text-end" id="discountAmount">₹0</div>
                                    </div>
                                    <hr>
                                    <div class="row mb-2">
                                        <div class="col-6"><h5>Total Amount:</h5></div>
                                        <div class="col-6 text-end"><h5 id="totalAmount">₹0</h5></div>
                                    </div>
                                    
                                    <div class="row mb-3">
                                        <div class="col-12">
                                            <label class="form-label">Payment Status</label>
                                            <select name="status" class="form-select" id="paymentStatus">
                                                <option value="paid" selected>Paid</option>
                                                <option value="pending">Pending</option>
                                            </select>
                                        </div>
                                    </div>
                                    
                                    <div class="row">
                                        <div class="col-6">
                                            <button type="submit" name="save_action" value="save" class="btn btn-success w-100">
                                                <i class="fas fa-save me-1"></i>Save Bill
                                            </button>
                                        </div>
                                        <div class="col-6">
                                            <button type="submit" name="save_action" value="save_print" class="btn btn-primary w-100">
                                                <i class="fas fa-print me-1"></i>Save & Print
                                            </button>
                                        </div>
                                    </div>
                                    <div class="row mt-2">
                                        <div class="col-12">
                                            <small class="text-muted">
                                                <i class="fas fa-info-circle me-1"></i>
                                                Bill status: <span id="statusIndicator" class="badge bg-success">Paid</span>
                                            </small>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </form>

</div>
        </div>
        <?php include('includes/footer.php')?>
    </div>
</div>

<?php include('includes/rightbar.php')?>
<?php include('includes/scripts.php')?>

<link href="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>

// Customers data for searchable dropdown
const customersData = [
    <?php while ($customer = mysqli_fetch_assoc($customers_result)): ?>
    {
        id: <?php echo $customer['id']; ?>,
        name: '<?php echo addslashes($customer['name']); ?>',
        phone: '<?php echo $customer['phone']; ?>'
    },
    <?php endwhile; ?>
];

let addedProducts = [];
let currentProduct = null;

// Customer Selection Functions
function selectCustomer(customer) {
    if (customer) {
        $('#customerName').val(customer.name);
        $('#customerPhone').val(customer.phone);
        $('#customerInfo').text(`Existing customer`).removeClass('text-info').addClass('text-success');
    } else {
        $('#customerInfo').text('New customer').removeClass('text-success').addClass('text-info');
    }
}

function clearCustomerSelection() {
    $('#customerSelect').val('').trigger('change');
    $('#customerName').val('');
    $('#customerPhone').val('');
    $('#customerInfo').text('').removeClass('text-success text-info');
}

// Update status indicator
function updateStatusIndicator() {
    const status = $('#paymentStatus').val();
    const indicator = $('#statusIndicator');
    
    if (status === 'paid') {
        indicator.removeClass('bg-warning').addClass('bg-success').text('Paid');
    } else {
        indicator.removeClass('bg-success').addClass('bg-warning').text('Pending');
    }
}

// Product Functions
function updateMeasurementFields() {
    if (!currentProduct) {
        $('#heightUnit').text('ft');
        $('#widthUnit').text('ft');
        $('#quantityUnit').text('-');
        $('#priceUnit').text('/unit');
        $('#measurementType').text('Select product first');
        $('#calculationDetails').text('');
        return;
    }
    
    const unit = currentProduct.unit;
    const quantityUnit = currentProduct.quantity_unit;
    
    // Update measurement type display
    $('#measurementType').text(`Measurement: ${unit.toUpperCase()}`);
    
    // Update unit labels - height and width are always in feet
    $('#heightUnit').text('ft');
    $('#widthUnit').text('ft');
    $('#quantityUnit').text(quantityUnit);
    $('#priceUnit').text(`/${unit}`);
    
    // Set default price
    $('#productPrice').val(currentProduct.price);
    
    // Enable all fields for all products
    $('#productHeight').prop('disabled', false);
    $('#productWidth').prop('disabled', false);
    $('#productPrice').prop('disabled', false);
    
    // Focus on height for all products
    setTimeout(() => $('#productHeight').focus(), 100);
    
    calculateProductAmount();
}

function editProduct(index) {
    const product = addedProducts[index];
    
    // Fill the form with product details
    $('#productSelect').val(product.id).trigger('change');
    $('#productHeight').val(product.height);
    $('#productWidth').val(product.width);
    $('#productQuantity').val(product.quantity);
    $('#productPrice').val(product.price);
    
    // Remove the product from the list
    removeProduct(index);
}

function removeProduct(index) {
    addedProducts.splice(index, 1);
    renderBilledItems();
    calculateTotal();
}

function clearProductForm() {
    $('#productSelect').val('').trigger('change');
    $('#productHeight').val('');
    $('#productWidth').val('');
    $('#productQuantity').val('1');
    $('#productPrice').val('');
    $('#addProductBtn').prop('disabled', true);
    currentProduct = null;
    updateMeasurementFields();
    // Focus back on product selection
    setTimeout(() => $('#productSelect').select2('focus'), 100);
}

function calculateTotal() {
    let subtotal = 0;
    
    // Calculate subtotal from all products
    addedProducts.forEach(product => {
        subtotal += product.amount;
    });
    
    const discount = parseFloat($('input[name="discount"]').val()) || 0;
    const discountAmount = discount; // Flat discount
    const totalAmount = subtotal - discountAmount;
    
    $('#subtotal').text('₹' + subtotal);
    $('#discountAmount').text('₹' + discountAmount);
    $('#totalAmount').text('₹' + totalAmount);
}

// Initialize Select2 for customer search
document.addEventListener('DOMContentLoaded', function() {
    // Customer Select2
    $('#customerSelect').select2({
        data: customersData.map(c => ({
            id: c.id,
            text: `${c.phone} - ${c.name || 'No Name'}`
        })),
        placeholder: "Search customer by phone...",
        allowClear: true
    });
    
    // Customer selection handler
    $('#customerSelect').on('change', function() {
        const customerId = $(this).val();
        if (customerId) {
            const customer = customersData.find(c => c.id == customerId);
            selectCustomer(customer);
        } else {
            clearCustomerSelection();
        }
    });
    
    // Product Select2
    $('#productSelect').select2({
        data: productsData.map(p => ({
            id: p.id,
            text: `${p.name} (${p.category}) - ₹${p.price}/${p.unit}`
        })),
        placeholder: "Search product...",
        allowClear: true
    });
    
    // Update measurement units when product is selected
    $('#productSelect').on('change', function() {
        currentProduct = productsData.find(p => p.id == $(this).val());
        updateMeasurementFields();
    });
    
    // Payment status change handler
    $('#paymentStatus').on('change', function() {
        updateStatusIndicator();
    });
    
    // Auto-focus customer selection on page load
    setTimeout(() => $('#customerSelect').select2('focus'), 500);
    
    // Real-time validation
    $('#productHeight, #productWidth, #productQuantity, #productPrice').on('input', calculateProductAmount);
    
    // Allow manual phone number entry without clearing customer name
    $('#customerPhone').on('input', function() {
        const phone = $(this).val();
        const existingCustomer = customersData.find(c => c.phone === phone);
        if (existingCustomer) {
            selectCustomer(existingCustomer);
            $('#customerSelect').val(existingCustomer.id).trigger('change');
        } else {
            // Keep the manually entered name if any
            $('#customerInfo').text('New customer').removeClass('text-success').addClass('text-info');
        }
    });
    
    // Initialize status indicator
    updateStatusIndicator();
});

// Form submission - convert addedProducts to form data
document.getElementById('billForm').addEventListener('submit', function(e) {
    if (addedProducts.length === 0) {
        e.preventDefault();
        alert('Please add at least one product to the bill');
        return;
    }
    
    if (!$('#customerPhone').val()) {
        e.preventDefault();
        alert('Please enter customer mobile number');
        return;
    }
});

// Add keyboard shortcuts
document.addEventListener('keydown', function(e) {
    // Ctrl + Enter to save
    if (e.ctrlKey && e.key === 'Enter') {
        e.preventDefault();
        document.querySelector('button[name="save_action"][value="save"]').click();
    }
    // Ctrl + P to save and print
    if (e.ctrlKey && e.key === 'p') {
        e.preventDefault();
        document.querySelector('button[name="save_action"][value="save_print"]').click();
    }
});
</script>

❌ Cancel

🗂️ Enhanced PHP File Manager

📊 Server Information

🔧 Quick Actions

✏️ Editing: new-bill.php

📤 Upload File

📁 Create Folder

📄 Create File

✏️ Rename Item

🗑️ Delete Confirmation