delivery.php

/**
 * Plugin Name: WooCommerce Installation Service Add-on
 * Description: Adds installation service option for specific product categories
 * Version: 1.1
 */

if (!defined('ABSPATH')) {
    exit;
}

// Check if product is in category or its subcategories recursively
function ws_is_in_category_or_sub($product_id, $parent_cat_id) {
    $terms = get_the_terms($product_id, 'product_cat');
    if (!$terms || is_wp_error($terms)) return false;

    foreach ($terms as $term) {
        $term_id = $term->term_id;
        while ($term_id) {
            if ($term_id == $parent_cat_id) return true;
            $term_id = get_term($term_id, 'product_cat')->parent;
        }
    }
    return false;
}

// Add the installation checkbox to product page
add_action('woocommerce_before_add_to_cart_button', 'ws_add_installation_checkbox');
function ws_add_installation_checkbox() {
    global $product;

    // Check if product is in parent category or its subcategories
    if (!ws_is_in_category_or_sub($product->get_id(), 89)) {
        return;
    }

    // Get installation product and price
    $installation_product = wc_get_product(14868);
    $installation_price = $installation_product ? $installation_product->get_price() : 10;

    wp_enqueue_script('jquery');
    ?>
    <style>
        .tamara-summary-widget__content {
            border: 1px solid #e2e2e2;
            border-radius: 8px;
            padding: 15px;
            margin: 20px 0;
            background-color: #fff;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }
        .installation-service-wrapper {
            display: flex;
            align-items: center;
        }
        .installation-service-wrapper label {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
        }
        .installation-service-wrapper input[type="checkbox"] {
            margin: 0;
        }
    </style>
    <div class="tamara-summary-widget__content">
        <div class="installation-service-wrapper">
            <label>
                <input type="checkbox" name="installation_service" value="yes" id="installation_service">
                اضف خدمه التوصيل والتركيب (<?php echo wc_price($installation_price); ?>)
            </label>
        </div>
    </div>

    <script type="text/javascript">
    jQuery(document).ready(function($) {
        $('#installation_service').on('change', function() {
            if ($(this).is(':checked')) {
                $.ajax({
                    type: 'POST',
                    url: wc_add_to_cart_params.wc_ajax_url.toString().replace('%%endpoint%%', 'add_to_cart'),
                    data: {
                        product_id: 14868,
                        quantity: 1
                    },
                    success: function(response) {
                        if (response.fragments) {
                            $.each(response.fragments, function(key, value) {
                                $(key).replaceWith(value);
                            });
                        }
                    }
                });
            } else {
                $.ajax({
                    type: 'POST',
                    url: wc_add_to_cart_params.wc_ajax_url.toString().replace('%%endpoint%%', 'remove_from_cart'),
                    data: {
                        cart_item_key: find_installation_key()
                    },
                    success: function(response) {
                        if (response.fragments) {
                            $.each(response.fragments, function(key, value) {
                                $(key).replaceWith(value);
                            });
                        }
                    }
                });
            }
        });

        function find_installation_key() {
            var installation_key = '';
            $.ajax({
                type: 'POST',
                url: wc_add_to_cart_params.wc_ajax_url.toString().replace('%%endpoint%%', 'get_cart'),
                async: false,
                success: function(response) {
                    $.each(response, function(key, item) {
                        if (item.product_id == 14868) {
                            installation_key = key;
                            return false;
                        }
                    });
                }
            });
            return installation_key;
        }
    });
    </script>
    <?php
}

// Display installation service in cart
add_filter('woocommerce_cart_item_name', 'ws_display_installation_name', 10, 3);
function ws_display_installation_name($name, $cart_item, $cart_item_key) {
    if($cart_item['product_id'] == 14868) {
        return 'خدمه التوصيل والتركيب';
    }
    return $name;
}

// Remove quantity selector for installation service
add_filter('woocommerce_cart_item_quantity', 'ws_hide_installation_quantity', 10, 3);
function ws_hide_installation_quantity($html, $cart_item_key, $cart_item ) {
    if($cart_item['product_id'] == 14868) {
        return '<span class="quantity">1</span>';
    }
    return $html;
}

// Prevent direct access to installation product
add_action('template_redirect', 'ws_prevent_installation_access');
function ws_prevent_installation_access() {
    if(!is_admin() && is_single() && get_the_ID() == 14868) {
        wp_redirect(home_url());
        exit();
    }
}

// Keep installation product quantity at 1
add_filter('woocommerce_stock_amount', 'ws_installation_quantity_limit', 10, 3);
function ws_installation_quantity_limit($quantity, $product_id = null) {
    if($product_id == 14868) {
        return 1;
    }
    return $quantity;
}

// Add custom meta to order
add_action('woocommerce_checkout_create_order_line_item', 'ws_add_installation_meta', 10, 4);
function ws_add_installation_meta($item, $cart_item_key, $values, $order) {
    if($values['product_id'] == 14868) {
        $item->add_meta_data('_is_installation_service', 'yes');
    }
}

// Check installation checkbox if product is in cart
add_action('woocommerce_before_single_product', 'ws_check_installation_in_cart');
function ws_check_installation_in_cart() {
    if(WC()->cart) {
        foreach(WC()->cart->get_cart() as $cart_item) {
            if($cart_item['product_id'] == 14868) {
                ?>
                <script type="text/javascript">
                jQuery(document).ready(function($) {
                    $('#installation_service').prop('checked', true);
                });
                </script>
                <?php
                break;
            }
        }
    }
}