How to Allow WordPress WooCommerce Direct Order to WhatsApp Free.

// Add custom checkbox and WhatsApp number fields to product edit page

add_action('woocommerce_product_options_general_product_data', 'add_whatsapp_order_fields');

function add_whatsapp_order_fields() {

    woocommerce_wp_checkbox(array(

        'id'            => 'allow_whatsapp_order',

        'label'         => __('Allow WhatsApp Order', 'text-domain'),

        'description'   => __('Check this box to enable WhatsApp ordering for this product.', 'text-domain'),

    ));

    woocommerce_wp_text_input(array(

        'id'          => '_whatsapp_number',

        'label'       => __('WhatsApp Number', 'text-domain'),

        'placeholder' => __('Enter WhatsApp Number', 'text-domain'),

        'desc_tip'    => 'true',

        'description' => __('Enter the WhatsApp number for this product. Include the country code without spaces or special characters (e.g., +123456789).', 'text-domain'),

    ));

}

// Save the checkbox and WhatsApp number field values

add_action('woocommerce_process_product_meta', 'save_whatsapp_order_fields');

function save_whatsapp_order_fields($post_id) {

    $allow_whatsapp_order = isset($_POST['allow_whatsapp_order']) ? 'yes' : 'no';

    update_post_meta($post_id, 'allow_whatsapp_order', $allow_whatsapp_order);

    $whatsapp_number = sanitize_text_field($_POST['_whatsapp_number']);

    update_post_meta($post_id, '_whatsapp_number', $whatsapp_number);

}

// Modify the product template to display WhatsApp Order button if checkbox is checked

add_action('woocommerce_single_product_summary', 'display_whatsapp_order_button', 30);

function display_whatsapp_order_button() {

    global $product;

    // Check if the product has the checkbox checked

    $allow_whatsapp_order = get_post_meta($product->get_id(), 'allow_whatsapp_order', true);

    if ($allow_whatsapp_order !== 'yes') {

        // If checkbox is not checked, display the default Add to Cart button

        return;

    }

    // Get the product details

    $product_title = get_the_title();

    $product_price = $product->get_price();

    $stock_quantity = $product->get_stock_quantity();

    $product_link = get_permalink($product->get_id());

    // Display WhatsApp Order button with the specified WhatsApp number

    $whatsapp_number = get_post_meta($product->get_id(), '_whatsapp_number', true);

    $whatsapp_number = !empty($whatsapp_number) ? preg_replace('/\D/', '', $whatsapp_number) : 'YOUR_DEFAULT_WHATSAPP_NUMBER';

    // Prepare the WhatsApp message with product details and link

    $whatsapp_message = urlencode(

        "I would like to place an order for product: $product_title\n" .

        "Price: $product_price\n" .

        "Current Stock Quantity: $stock_quantity\n" .

        "Product Link: $product_link"

    );

    // WhatsApp button styles

    echo '<style>

        a.whatsapp-button {

            display: inline-block;

            padding: 10px 15px;

            background-color: #25D366; /* WhatsApp green color */

            color: #fff;

            text-decoration: none;

            border-radius: 5px;

            font-size: 16px;

        }

        a.whatsapp-button i {

            margin-right: 5px; /* Adjust the spacing between icon and text */

        }

        a.whatsapp-button:hover {

            background-color: #128C7E; /* Darker shade for hover effect */

        }

    </style>';

    // Display WhatsApp Order button

    echo '<a href="https://api.whatsapp.com/send?phone=' . esc_attr($whatsapp_number) . '&text=' . $whatsapp_message . '" class="whatsapp-button" target="_blank" rel="noopener"><i class="fa fa-whatsapp"></i> WhatsApp Order</a>';

    // Remove the default Add to Cart button

    remove_action('woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart', 30);

}