<?php
namespace Formipay;
use Formipay\Traits\SingletonTrait;

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

class Coupon {

    use SingletonTrait;

	/**
	 * Initializes the plugin by setting filters and administration functions.
	 */
    
    protected function __construct() {

        add_action( 'init',                                 [$this, 'cpt'] );
        add_action( 'admin_menu',                           [$this, 'add_submenu'] );
        add_action( 'admin_enqueue_scripts',                [$this, 'enqueue_admin'] );

        add_filter( 'stm_wpcfto_boxes',                     [$this, 'cpt_post_fields_box'] );
        add_filter( 'stm_wpcfto_fields',                    [$this, 'cpt_post_fields_content'] );
        add_filter( 'formipay/coupon-config',               [$this, 'rule_config'] );
        add_filter( 'formipay/coupon-config',               [$this, 'restriction_config'] );
        add_filter( 'formipay/admin-editor/layout/static-elements-sort', [$this, 'add_static_element'] );
        add_action( 'formipay/render/static-element',       [$this, 'render_static_element'] );

        add_action( 'wp_ajax_check_coupon_code',            [$this, 'check_coupon_code'] );
        add_action( 'wp_ajax_nopriv_check_coupon_code',     [$this, 'check_coupon_code'] );

        // Admin Page
        add_action( 'wp_ajax_formipay_coupon_get_products', [$this, 'formipay_coupon_get_products'] );
        add_action( 'wp_ajax_formipay-tabledata-coupons',   [$this, 'formipay_tabledata_coupons'] );
        add_action( 'wp_ajax_formipay-create-coupon-post',  [$this, 'formipay_create_coupon_post'] );
        add_action( 'wp_ajax_formipay-delete-coupon',       [$this, 'formipay_delete_coupon'] );
        add_action( 'wp_ajax_formipay-bulk-delete-coupon',  [$this, 'formipay_bulk_delete_coupon'] );
        add_action( 'wp_ajax_formipay-duplicate-coupon',    [$this, 'formipay_duplicate_coupon'] );
        add_action( 'wp_ajax_formipay-get-coupon',          [$this, 'formipay_get_coupon'] );
        add_action( 'wp_ajax_formipay-save-coupon',         [$this, 'formipay_save_coupon'] );
        add_action( 'wp_ajax_formipay-autocomplete-search', [$this, 'formipay_autocomplete_search'] );

        // React Metabox
        add_action( 'add_meta_boxes',                       [$this, 'add_react_metabox'] );
        add_action( 'admin_footer-post.php',                [$this, 'render_react_metabox_template'] );

        // Order
        add_filter( 'formipay/order/order-details',         [$this, 'order_details'], 99, 3 );
        // Paypal
        add_filter( 'formipay/order/paypal/payload/breakdown',  [$this, 'add_discount_item'], 99, 3 );

    }

    public function cpt() {

        $labels = array(
            'name'                  => __('Coupons', 'formipay'),
            'singular_name'         => __('Coupon', 'formipay'),
            // 'menu_name'             => 'Formipay',
            'add_new'               => __('Add New', 'formipay'),
            'add_new_item'          => __('Add New Coupon', 'formipay'),
            'edit'                  => __('Edit', 'formipay'),
            'edit_item'             => __('Edit Coupon', 'formipay'),
            'new_item'              => __('New Coupon', 'formipay'),
            'view'                  => __('View', 'formipay'),
            'view_item'             => __('View Coupon', 'formipay'),
            'search_items'          => __('Search Coupon', 'formipay'),
            'not_found'             => __('No coupons found', 'formipay'),
            'not_found_in_trash'    => __('No coupons found in trash', 'formipay'),
            'parent'                => __('Coupon Parent', 'formipay')
        );
    
        $args = array(
            'label'                 => 'Coupons',
            'description'           => __('Coupon for marketing campaign', 'formipay'),
            'labels'                => $labels,
            'public'                => false,
            'supports'              => array( 'title' ),
            'hierarchical'          => false,
            'has_archive'           => false,
            'show_ui'               => true,
            'show_in_menu'          => false,
            'show_in_rest'          => false,
            'query_var'             => true
        );
    
        register_post_type( 'formipay-coupon', $args );

    }

    public function add_submenu() {

        add_submenu_page( 
            'formipay', 
            __( 'Coupons', 'formipay' ),
            __( 'Coupons', 'formipay' ),
            'manage_options',
            'formipay-coupons', 
            [$this, 'formipay_coupon'], 
        );

    }

    public function formipay_coupon() {
        // React admin
        \Formipay\Admin\ReactAdmin::render_mount_point('coupons');
    }

    public function enqueue_admin() {
        $screen = get_current_screen();

        // Enqueue SweetAlert2 for coupon post edit screen
        if ($screen && $screen->post_type === 'formipay-coupon' && $screen->base === 'post') {
            wp_enqueue_style('sweetalert2', FORMIPAY_URL . 'vendor/SweetAlert2/sweetalert2.min.css', [], '11.14.4', 'all');
            wp_enqueue_script('sweetalert2', FORMIPAY_URL . 'vendor/SweetAlert2/sweetalert2.min.js', ['jquery'], '11.14.4', true);

            // Localize admin data
            wp_localize_script('formipay-admin', 'formipayAdmin', [
                'ajaxUrl' => admin_url('admin-ajax.php'),
                'siteUrl' => site_url(),
                'nonce' => wp_create_nonce('formipay-admin'),
            ]);
        }
    }

    public function cpt_post_fields_box($boxes) {
        // Disabled - using React metabox instead
        // $boxes['formipay_coupon_settings'] = array(
        //     'post_type' => array('formipay-coupon'),
        //     'label' => __('Details', 'formipay'),
        // );

        return $boxes;
    }

    public function cpt_post_fields_content($fields) {

        $fields['formipay_coupon_settings'] = array();

        $fields = apply_filters( 'formipay/coupon-config', $fields );
    
        return $fields;

    }
    
    public function rule_config($fields) {

        $multicurrency = formipay_is_multi_currency_active();
        $all_currencies = formipay_currency_as_options();
        $global_selected_currencies = formipay_global_currency_options();
        $global_currencies = formipay_global_currency_options('raw');
        $default_currency = formipay_default_currency();

        // Group : Rules
        $rules_group_1 = array(
            'rules_general_group' => array(
                'type'  => 'group_title',
                'group' => 'started'
            ),
            'active' => array(
                'type' => 'checkbox',
                'label' => __( 'Active this coupon', 'formipay' ),
                'value' => true,
            ),
            'type' => array(
                'type' => 'radio',
                'label' => __( 'Type', 'formipay' ),
                'required' => true,
                'options' => array(
                    'fixed' => __( 'Fixed', 'formipay' ),
                    'percentage' => __( 'Percentage', 'formipay' )
                ),
            ),
            'amount_percentage' => array(
                'type' => 'number',
                'label' => __( 'Amount', 'formipay' ),
                'required' => true,
                'dependency' => array(
                    'key' => 'type',
                    'value' => 'percentage'
                ),
                'group' => 'ended'
            )
        );

        $rules_group_2 = [];

        $global_currencies = get_global_currency_array();
        $default_currency = formipay_default_currency();

        $rules_group_2['discount_amount_wrapper'] = array(
            'type'  => 'group_title',
            'label' => __( 'Discount Amount', 'formipay' ),
            'dependency' => array(
                'key' => 'type',
                'value' => 'fixed'
            ),
            'group' => 'started',
        );

        $rules_group_max['discount_max_amount_wrapper'] = array(
            'type'  => 'group_title',
            'label' => __( 'Max Discount Amount', 'formipay' ),
            'description' => __( 'Leave empty to not limit the max discount amount.', 'formipay' ),
            'group' => 'started',
        );

        foreach($global_currencies as $currency){
            $default_currency_symbol = formipay_get_currency_data_by_value($default_currency, 'symbol');
            $currency_symbol = formipay_get_currency_data_by_value($currency['currency'], 'symbol');
            $currency_title = ucwords(formipay_get_currency_data_by_value($currency['currency'], 'title'));
            $decimal_digits = intval($currency['decimal_digits']);
            $step = $decimal_digits * 10;
            $step = $step > 0 ? 1 / $step : 1;
            
            $rules_group_2['amount_fixed_'.$currency_symbol] = array(
                'type' => 'number',
                'label' => sprintf( 
                    __( '<img src="%s" width="18" /> Amount in %s', 'formipay' ), 
                    formipay_get_flag_by_currency($currency['currency']),
                    $currency_symbol
                ),
                'step' => $step,
                'min' => 0,
                'required' => true,
                'placeholder' => __( 'Enter Amount...', 'formipay' ),
                'dependency' => array(
                    'key' => 'type',
                    'value' => 'fixed'
                )
            );

            $rules_group_max['max_amount_'.$currency_symbol] = array(
                'type' => 'number',
                'label' => sprintf( 
                    __( '<img src="%s" width="18" /> Max Amount in %s', 'formipay' ), 
                    formipay_get_flag_by_currency($currency['currency']),
                    $currency_symbol
                ),
                'step' => $step,
                'min' => 0,
                'placeholder' => __( 'Enter Max Amount...', 'formipay' )
            );

        }
        $last_rules_group_2 = array_key_last($rules_group_2);
        $rules_group_2[$last_rules_group_2]['group'] = 'ended';

        $last_rules_group_max = array_key_last($rules_group_max);
        $rules_group_max[$last_rules_group_max]['group'] = 'ended';
        
        $rules_group_3 = array(
            'rules_group' => array(
                'type'  => 'group_title',
                'label' => __( 'Rules', 'formipay' ),
                'description' => __( 'Define the rules of this coupon.', 'formipay' ),
                'group' => 'started'
            ),
            'case_sensitive' => array(
                'type' => 'checkbox',
                'label' => __( 'Case Sensitive', 'formipay' ),
                'description' => __( 'If this activated, coupon codes must be entered with the exact capitalization as specified. <br>
                For example code <B>SAVE10</b>:<br>
                - <b>SAVE10</b> is valid<br>
                - <b>save10</b> is invalid<br>
                - <b>Save10</b> is invalid.', 'formipay' )
            ),
            'free_shipping' => array(
                'type' => 'checkbox',
                'label' => __( 'Free Shipping', 'formipay' ),
                'description' => __( 'Shipping cost will be free when this coupon applied.', 'formipay' )
            ),
            'quantity_active' => array(
                'type' => 'checkbox',
                'label' => __( 'Influenced by Quantity', 'formipay' ),
                'description' => __( 'Example: when buyer buy 4 pcs of item, 4 × discount amount will be implemented.', 'formipay' ),
                'dependency' => array(
                    'key' => 'type',
                    'value' => 'fixed'
                )
            ),
            // 'max_discount' => array(
            //     'type' => 'number',
            //     'label' => __( 'Max Discount Amount', 'formipay' ),
            //     'description' => __( 'Leave it empty to not limit the max discount amount.', 'formipay' )
            // ),
        );

        $rules_group = $rules_group_1 + $rules_group_2 + $rules_group_max + $rules_group_3;

        $rules_group = apply_filters( 'formipay/coupon-settings/tab:rules/group:rules', $rules_group );

        $last_rules_group = array_key_last($rules_group);
        $rules_group[$last_rules_group]['group'] = 'ended';

        $all_group_merged = $rules_group;

        $settings_all_fields = apply_filters( 'formipay/coupon-settings/tab:rules', $all_group_merged );

        $settings_fields = [];
        if(!empty($settings_all_fields)){
            foreach($settings_all_fields as $key => $value){
                $settings_fields[$key] = $value;
            }
        }

        $fields['formipay_coupon_settings']['rules'] = array(
            'name' => __('Rules', 'formipay'),
            'fields' => $settings_fields
        );

        return $fields;

    }
    
    public function restriction_config($fields) {

        // Group : Restrictions
        $restriction_group = array(
            'restriction_group' => array(
                'type'  => 'group_title',
                'label' => __( 'Restrictions', 'formipay' ),
                'group' => 'started'
            ),
            'use_limit' => array(
                'type' => 'number',
                'label' => __( 'Usage Limit', 'formipay' ),
                'description' => __( 'Leave it empty or 0 (zero) to set it as unlimited usage.', 'formipay' )
            ),
            'date_limit' => array(
                'type' => 'date',
                'label' => __( 'Date Limit', 'formipay' ),
                'description' => __( 'Chosen date is the last day the coupon can be used. Leave it empty tio set it as no-limit date.', 'formipay' )
            ),
            'forms' => array(
                'type' => 'autocomplete',
                'post_type' => array('formipay-form'),
                'label' => __( 'Forms', 'formipay' ),
                'description' => __( 'Only selected form(s) can use the coupon. Leave empty to apply to all forms.', 'formipay' )
            ),
            'products' => array(
                'type' => 'autocomplete',
                'post_type' => array('formipay-product'),
                'label' => __( 'Products', 'formipay' ),
                'description' => __( 'Only selected product(s) can use the coupon. Leave empty to apply to all products.', 'formipay' )
            ),
            'customers' => array(
                'type' => 'autocomplete',
                'post_type' => array('formipay-product'),
                'label' => __( 'Customers', 'formipay' ),
                'description' => __( 'Only selected customer(s) can use the coupon. Leave empty to apply to all customers.', 'formipay' )
            )
        );

        $restriction_group = apply_filters( 'formipay/coupon-settings/tab:restriction/group:restrictions', $restriction_group );

        $last_restriction_group = array_key_last($restriction_group);
        $restriction_group[$last_restriction_group]['group'] = 'ended';

        $details_all_fields = apply_filters( 'formipay/coupon-settings/tab:restriction', $restriction_group );

        $details_fields = [];
        if(!empty($details_all_fields)){
            foreach($details_all_fields as $key => $value){
                $details_fields[$key] = $value;
            }
        }

        $fields['formipay_coupon_settings']['restriction'] = array(
            'name' => __('Restrictions', 'formipay'),
            'fields' => $details_fields
        );

        return $fields;

    }

    public function add_static_element($elements) {

        $elements[] = [
            'id' => 'coupon_field',
            'label' => __( 'Coupon Field', 'formipay' )
        ];

        return $elements;

    }

    public function render_static_element($element_id) {

        if($element_id == 'coupon_field'){
            ?>
                <div class="formipay-field-group">
                    <div class="formipay-coupon-field-group">
                        <input type="text" name="coupon_code"
                            class="formipay-input formipay-code-input"
                            value="<?php echo 
                            // phpcs:ignore WordPress.Security.NonceVerification.Recommended
                            isset($_GET['coupon']) ? esc_attr( sanitize_text_field( wp_unslash($_GET['coupon']) ) ) : '' 
                            ?>" placeholder="<?php echo esc_attr__('Your coupon code', 'formipay'); ?>"
                            data-label="<?php echo esc_attr__('Coupon Code', 'formipay'); ?>">
                        <button type="button" data-text="<?php echo esc_attr__( 'Apply', 'formipay' ); ?>" data-checking="<?php echo esc_attr__( 'Checking...', 'formipay' ); ?>" id="apply_coupon_code"><?php echo esc_attr__( 'Apply', 'formipay' ); ?></button>
                    </div>
                    <div class="formipay-coupon-alert-message"></div>
                </div>
            <?php
        }

    }

    public function check_coupon_code() {

        check_ajax_referer( 'formipay-frontend-nonce', 'security' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        $code = isset($_REQUEST['code']) ? sanitize_text_field( wp_unslash($_REQUEST['code']) ) : '';
        $form_id = isset($_REQUEST['form']) ? intval( $_REQUEST['form'] ) : 0;

        $check_code = formipay_get_coupon_id_by_code($code, $form_id);

        if(false == $check_code){
            wp_send_json_error( [
                'message' => __( 'Coupon code is not valid', 'formipay' )
            ] );
        }

        wp_send_json_success();

    }

    public function order_details($details, $form_id, $order_data) {

        if( isset($order_data['coupon_code']) && !empty($order_data['coupon_code']) ) {

            $coupon_id = formipay_get_coupon_id_by_code( sanitize_text_field( $order_data['coupon_code'] ), $form_id );

            if(false !== $coupon_id) {

                $amount = floatval( formipay_get_post_meta( $coupon_id, 'amount' ) );
                $discount = $amount;
                $coupon_type = formipay_get_post_meta( $coupon_id, 'type' );

                $qty = 1;
                if( formipay_get_post_meta( $form_id, 'product_quantity_toggle' ) == 'on' ){
                    $qty = intval($order_data['qty']);
                }

                if( $coupon_type == 'percentage' ){
                    $product_price = floatval( formipay_get_post_meta( $form_id, 'product_price' ) );
                    $amount = $amount / 100;
                    $discount = $product_price * $amount;
                }

                $amount = $discount * $qty;
                $amount = $amount * -1;

                $details[] = [
                    'item'      => esc_html( $order_data['coupon_code'] ),
                    'amount'    => floatval($amount),
                    'subtotal'  => floatval($amount),
                    'context'   => 'sub'
                ];

            }

        }

        return $details;

    }

    public function count_order_by_coupon_code($coupon_code) {

        global $wpdb;
        $table = $wpdb->prefix .'formipay_orders';
        // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
        $data = $wpdb->get_results(
            $wpdb->prepare(
                "SELECT COUNT(id) as count FROM %i WHERE `items` LIKE %s", $table, '%' . $wpdb->esc_like($coupon_code) . '%'
            )
        );
        
        return $data[0]->count;

    }

    public function add_discount_item($breakdown, $currency, $order_data) {

        if( isset($order_data['form_data']['coupon_code']) && !empty($order_data['form_data']['coupon_code']) ) {

            $form_id = $order_data['form_id'];
            $coupon_id = formipay_get_coupon_id_by_code( sanitize_text_field( $order_data['form_data']['coupon_code'] ), $form_id );

            if(false !== $coupon_id) {

                $amount = floatval( formipay_get_post_meta( $coupon_id, 'amount' ) );
                $discount = $amount;
                $coupon_type = formipay_get_post_meta( $coupon_id, 'type' );
                
                $qty = 1;
                if( formipay_get_post_meta( $form_id, 'product_quantity_toggle' ) == 'on' ){
                    $qty = intval($order_data['form_data']['qty']);
                }

                if( $coupon_type == 'percentage' ){
                    $product_price = floatval( formipay_get_post_meta( $form_id, 'product_price' ) );
                    $amount = $amount / 100;
                    $discount = $product_price * $amount;
                }

                $breakdown['item_total']['value'] += $discount;
                $breakdown['discount'] = array(
                    "currency_code" => $currency,
                    "value" => $discount
                );

            }

        }

        return $breakdown;

    }

    public function formipay_tabledata_coupons() {

        check_ajax_referer( 'formipay-admin', '_wpnonce' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        $args = [
            'post_type' => 'formipay-coupon',
            'posts_per_page' => -1,
            'post_status' => array( 'pending', 'draft', 'publish' )
        ];

        $get_total_coupons = get_posts($args);

        $coupon_status = [
            'all' => 0,
            'active' => 0,
            'inactive' => 0
        ];
        if(!empty($get_total_coupons)){
            foreach($get_total_coupons as $coupon){
                $status = (formipay_get_post_meta($coupon->ID, 'active') == 'on') ? 'active' : 'inactive';
                $coupon_status['all'] = intval($coupon_status['all']) + 1;
                if($status == 'active'){
                    $coupon_status['active'] = intval($coupon_status['active']) + 1;
                }elseif($status == 'inactive'){
                    $coupon_status['inactive'] = intval($coupon_status['inactive']) + 1;
                }
            }
        }

        if(isset($_REQUEST['limit'])){
            $args['posts_per_page'] = intval($_REQUEST['limit']);
        }

        if(isset($_REQUEST['offset'])){
            $args['offset'] = intval($_REQUEST['offset']);
        }

        if(!empty($_REQUEST['search'])){
            $args['s'] = sanitize_text_field( wp_unslash($_REQUEST['search']) );
        }

        // Handle status filtering (active/inactive)
        $status_filter = isset($_REQUEST['status']) ? sanitize_text_field($_REQUEST['status']) : 'all';

        $get_coupons = get_posts($args);
        $global_currencies = get_global_currency_array();

        $coupons = [];
        if(!empty($get_coupons)){
            foreach($get_coupons as $key => $coupon){

                $is_active = formipay_get_post_meta($coupon->ID, 'active') == 'on';

                // Apply status filter
                if ($status_filter !== 'all') {
                    if ($status_filter === 'active' && !$is_active) continue;
                    if ($status_filter === 'inactive' && $is_active) continue;
                }

                $date_limit = formipay_get_post_meta($coupon->ID, 'date_limit');

                $type = formipay_get_post_meta($coupon->ID, 'type');
                $amount_meta_key = "amount_$type";

                if($type == 'fixed'){
                    $amount_value = [];
                    foreach($global_currencies as $currency){
                        $raw = $currency['currency'];
                        $decimal_digits = $currency['decimal_digits'];
                        $decimal_symbol = $currency['decimal_symbol'];
                        $thousand_separator = $currency['thousand_separator'];
                        $parse_currency = explode(':::', $raw);
                        $currency_code = $parse_currency[0];
                        $amount_in_currency = formipay_get_post_meta($coupon->ID, 'amount_fixed_'.$currency_code);
                        $amount_value[] = [
                            'raw' => $raw,
                            'amount' => number_format($amount_in_currency, $decimal_digits, $decimal_symbol, $thousand_separator),
                            'flag' => formipay_get_flag_by_currency($raw)
                        ];
                    }
                }else{
                    $amount_value = floatval(formipay_get_post_meta($coupon->ID, $amount_meta_key));
                }


                $coupons[] = [
                    'ID' => $coupon->ID,
                    'code' => get_the_title($coupon->ID),
                    'amount' => $amount_value,
                    'type' => ucfirst(formipay_get_post_meta($coupon->ID, 'type')),
                    'case_sensitive' => formipay_get_post_meta($coupon->ID, 'case_sensitive'),
                    'usage_count' => $this->count_order_by_coupon_code(get_the_title($coupon->ID)),
                    'usages' => $this->count_order_by_coupon_code(get_the_title($coupon->ID)),
                    'date_limit' => false !== $date_limit ? formipay_date('Y-m-d', intval(formipay_get_post_meta($coupon->ID, 'date_limit')) / 1000) : 'none',
                    'active' => $is_active ? 'on' : 'off',
                    'post_status' => $is_active ? 'active' : 'inactive',
                    'status' => $is_active ? 'active' : 'inactive'
                ];
            }
        }

        $response = [
            'results' => $coupons,
            'total' => count($get_total_coupons), // Total number of forms
            'posts_report' => array_map('intval', (array)$coupon_status)
        ];

        wp_send_json($response);
    }

    public function formipay_coupon_get_products() {

        check_ajax_referer( 'formipay-admin', '_wpnonce' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        if (!isset($_POST['search']) || empty($_POST['search'])) {
            wp_send_json_error( __('No search term provided.', 'formipay') );
        }

        $search_term = sanitize_text_field( wp_unslash($_POST['search']) );

        $query = get_posts([
            'post_type' => 'formipay-form',
            's'         => $search_term,
            'posts_per_page' => -1,
        ]);

        $results = [];
        if(!empty($query)){
            foreach($query as $post){
                $results[] = [
                    'value'   => $post->ID,
                    'label' => $post->post_title,
                ];
            }
        }

        wp_send_json($results);

    }

    public function formipay_create_coupon_post() {

        check_ajax_referer( 'formipay-admin', '_wpnonce' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        $code = isset($_REQUEST['title']) ? sanitize_text_field( wp_unslash($_REQUEST['title']) ) : '';

        if( !empty($code) && '' !== $code ){
            $post_id = wp_insert_post( [
                'post_title' => $code,
                'post_type' => 'formipay-coupon',
            ], true );

            if(is_wp_error($post_id)){
                wp_send_json_error( [
                    'message' => $post_id->get_error_message()
                ] );
            }

            update_post_meta($post_id, 'type', 'percentage');
            update_post_meta($post_id, 'amount', 0);
            wp_send_json_success( [
                'edit_post_url' => admin_url('post.php?post='.$post_id.'&action=edit')
            ] );
        }

        wp_send_json_error( [
            'message' => esc_html__( 'Coupon code is empty.', 'formipay' )
        ] );

    }

    public function formipay_delete_coupon() {

        check_ajax_referer( 'formipay-admin', '_wpnonce' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        $post_id = isset($_REQUEST['id']) ? intval($_REQUEST['id']) : 0;

        $delete = wp_delete_post($post_id, true);

        if(is_wp_error( $delete )){
            wp_send_json_error( [
                'title' => esc_html__( 'Failed', 'formipay' ),
                'message' => esc_html__( 'Failed to delete coupon. Please try again.', 'formipay' ),
                'icon' => 'error'
            ] );
        }

        wp_send_json_success( [
            'title' => esc_html__( 'Deleted', 'formipay' ),
            'message' => esc_html__( 'Coupon is deleted permanently.', 'formipay' ),
            'icon' => 'success'
        ] );

    }

    public function formipay_bulk_delete_coupon() {

        check_ajax_referer( 'formipay-admin', '_wpnonce' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        if( empty($_REQUEST['ids']) ){
            wp_send_json_error( [
                'title' => esc_html__( 'Failed', 'formipay' ),
                'message' => esc_html__( 'There is no coupon selected. Please try again.', 'formipay' ),
                'icon' => 'error'
            ] );
        }

        $ids = isset($_REQUEST['ids']) ? $_REQUEST['ids'] : [];

        $success = 0;
        $failed = 0;
        $report = __( 'Done.', 'formipay' );
        if(!empty($ids)){
            foreach($ids as $id){
                $delete = wp_delete_post($id, true);
                if(is_wp_error( $delete )){
                    $failed++;
                }else{
                    $success++;
                }
            }
        }

        if($success > 0){
            $report .= sprintf( __( ' Deleted %d coupon(s).', 'formipay' ), $success);
        }
        if($failed > 0){
            $report .= sprintf( __( ' Failed %d coupon(s).', 'formipay' ), $failed);
        }

        wp_send_json_success( [
            'title' => esc_html__( 'Done!', 'formipay' ),
            'message' => $report,
            'icon' => 'info'
        ] );

    }

    public function formipay_duplicate_coupon() {
        
        check_ajax_referer( 'formipay-admin', '_wpnonce' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        $post_id = isset($_REQUEST['id']) ? intval($_REQUEST['id']) : 0;
        $post = get_post($post_id);
        if (!$post) {
            wp_send_json_error( [
                'title' => esc_html__('Failed', 'formipay'),
                'message' => esc_html__( 'Coupon is not defined.', 'formipay' ),
                'icon' => 'error'
            ] );
        }
    
        if (!in_array($post->post_type, ['formipay-coupon'])) {
            wp_send_json_error( [
                'title' => esc_html__('Failed', 'formipay'),
                'message' => esc_html__( 'Wrong Post Type.', 'formipay' ),
                'icon' => 'error'
            ] );
        }
    
        $duplicate_post = [
            'post_title'   => $post->post_title . ' ' . __('Copy', 'formipay'),
            'post_content' => $post->post_content,
            'post_status'  => 'draft', // Set sebagai draft
            'post_type'    => $post->post_type,
            'post_author'  => $post->post_author,
        ];
    
        // Masukkan duplikat ke database
        $new_post_id = wp_insert_post($duplicate_post);
    
        if (is_wp_error($new_post_id)) {
            wp_send_json_error( [
                'title' => esc_html__('Failed', 'formipay'),
                'message' => esc_html__( 'Something happened. Please try again.', 'formipay' ),
                'icon' => 'error'
            ] );
        }
    
        // Salin semua meta data
        $meta_data = get_post_meta($post_id);
        foreach ($meta_data as $key => $values) {
            if($key !== 'forms'){
                foreach ($values as $value) {
                    add_post_meta($new_post_id, $key, maybe_unserialize($value));
                }
            }
        }
    
        wp_send_json_success( [
            'title' => esc_html__('Duplicated!', 'formipay'),
            'message' => esc_html__( 'Coupon is successfully duplicated.', 'formipay' ),
            'icon' => 'success'
        ] );
    }

    /**
     * Get coupon data for React editor
     */
    public function formipay_get_coupon() {

        check_ajax_referer( 'formipay-admin', '_wpnonce' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        $post_id = isset($_REQUEST['id']) ? intval($_REQUEST['id']) : 0;

        if ( empty($post_id) ) {
            wp_send_json_error( [ 'message' => esc_html__( 'Coupon ID is required.', 'formipay' ) ] );
        }

        $post = get_post($post_id);
        if ( ! $post || $post->post_type !== 'formipay-coupon' ) {
            wp_send_json_error( [ 'message' => esc_html__( 'Coupon not found.', 'formipay' ) ] );
        }

        $global_currencies = get_global_currency_array();

        // Build coupon data
        $coupon_data = [
            'ID' => $post_id,
            'post_title' => $post->post_title,
            'active' => formipay_get_post_meta($post_id, 'active'),
            'type' => formipay_get_post_meta($post_id, 'type'),
            'amount_percentage' => formipay_get_post_meta($post_id, 'amount_percentage'),
            'case_sensitive' => formipay_get_post_meta($post_id, 'case_sensitive'),
            'free_shipping' => formipay_get_post_meta($post_id, 'free_shipping'),
            'quantity_active' => formipay_get_post_meta($post_id, 'quantity_active'),
            'use_limit' => formipay_get_post_meta($post_id, 'use_limit'),
            'date_limit' => formipay_get_post_meta($post_id, 'date_limit'),
            'amounts_fixed' => [],
            'max_amounts' => [],
            'forms' => formipay_get_post_meta($post_id, 'forms') ?: [],
            'products' => formipay_get_post_meta($post_id, 'products') ?: [],
            'customers' => formipay_get_post_meta($post_id, 'customers') ?: [],
        ];

        // Get fixed amounts for each currency
        foreach ($global_currencies as $currency) {
            $currency_raw = $currency['currency'];
            $currency_parts = explode(':::', $currency_raw);
            $currency_code = $currency_parts[0] ?? '';
            $symbol = formipay_get_currency_data_by_value($currency_raw, 'symbol');

            $amount_fixed = formipay_get_post_meta($post_id, 'amount_fixed_' . $symbol);
            if ( $amount_fixed ) {
                $coupon_data['amounts_fixed'][] = [
                    'currency' => $currency_code,
                    'symbol' => $symbol,
                    'amount' => $amount_fixed,
                ];
            }

            $max_amount = formipay_get_post_meta($post_id, 'max_amount_' . $symbol);
            if ( $max_amount ) {
                $coupon_data['max_amounts'][] = [
                    'currency' => $currency_code,
                    'symbol' => $symbol,
                    'amount' => $max_amount,
                ];
            }
        }

        wp_send_json_success( $coupon_data );
    }

    /**
     * Save coupon data from React editor
     */
    public function formipay_save_coupon() {

        check_ajax_referer( 'formipay-admin', '_wpnonce' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        $post_id = isset($_REQUEST['id']) ? intval($_REQUEST['id']) : 0;
        $title = isset($_REQUEST['title']) ? sanitize_text_field(wp_unslash($_REQUEST['title'])) : '';

        if ( empty($title) ) {
            wp_send_json_error( [ 'message' => esc_html__( 'Coupon code is required.', 'formipay' ) ] );
        }

        $global_currencies = get_global_currency_array();

        // Prepare post data
        $post_data = [
            'post_title' => $title,
            'post_type' => 'formipay-coupon',
            'post_status' => 'publish',
        ];

        if ( $post_id > 0 ) {
            $post_data['ID'] = $post_id;
            $post_data['post_status'] = get_post_status($post_id);
            $new_post_id = wp_update_post($post_data);
        } else {
            $new_post_id = wp_insert_post($post_data);
        }

        if ( is_wp_error($new_post_id) ) {
            wp_send_json_error( [ 'message' => $new_post_id->get_error_message() ] );
        }

        // Save meta fields
        $meta_fields = [
            'active',
            'type',
            'amount_percentage',
            'case_sensitive',
            'free_shipping',
            'quantity_active',
            'use_limit',
            'date_limit',
        ];

        foreach ($meta_fields as $field) {
            $value = isset($_REQUEST[$field]) ? wp_unslash($_REQUEST[$field]) : '';
            update_post_meta($new_post_id, $field, $value);
        }

        // Save fixed amounts
        foreach ($global_currencies as $currency) {
            $symbol = formipay_get_currency_data_by_value($currency['currency'], 'symbol');

            if ( isset($_REQUEST['amount_fixed_' . $symbol]) ) {
                update_post_meta($new_post_id, 'amount_fixed_' . $symbol, wp_unslash($_REQUEST['amount_fixed_' . $symbol]));
            }

            if ( isset($_REQUEST['max_amount_' . $symbol]) ) {
                update_post_meta($new_post_id, 'max_amount_' . $symbol, wp_unslash($_REQUEST['max_amount_' . $symbol]));
            }
        }

        // Save relation fields
        $relation_fields = ['forms', 'products', 'customers'];
        foreach ($relation_fields as $field) {
            if ( isset($_REQUEST[$field]) ) {
                $values = is_array($_REQUEST[$field]) ? array_map('intval', $_REQUEST[$field]) : [];
                update_post_meta($new_post_id, $field, $values);
            }
        }

        wp_send_json_success( [
            'message' => esc_html__( 'Coupon saved successfully.', 'formipay' ),
            'id' => $new_post_id,
        ] );
    }

    /**
     * Add React metabox for coupon editor
     */
    public function add_react_metabox() {
        add_meta_box(
            'formipay_coupon_reactor_metabox',
            __( 'Coupon Settings', 'formipay' ),
            [$this, 'render_react_metabox'],
            'formipay-coupon',
            'normal',
            'high'
        );
    }

    /**
     * Render React metabox container
     */
    public function render_react_metabox($post) {
        ?>
        <div
            data-formipay-metabox="coupon"
            data-post-id="<?php echo esc_attr($post->ID); ?>"
            class="formipay-react-metabox-container"
        >
            <div class="formipay-loading">
                <div class="formipay-spinner"></div>
            </div>
        </div>
        <?php
    }

    /**
     * Render React metabox template (hidden)
     */
    public function render_react_metabox_template() {
        global $post;

        if (!$post || $post->post_type !== 'formipay-coupon') {
            return;
        }

        // Get global currencies
        $global_currencies = get_global_currency_array();

        ?>
        <script type="text/javascript">
            window.formipayGlobalCurrencies = <?php echo wp_json_encode($global_currencies); ?>;
            window.formipayGetFlag = function(currencyRaw) {
                <?php
                foreach ($global_currencies as $currency) {
                    echo 'if (currencyRaw === "' . esc_js($currency['currency']) . '") return "' . esc_url(formipay_get_flag_by_currency($currency['currency'])) . '";';
                }
                ?>
                return '';
            };
        </script>
        <?php
    }

    /**
     * Autocomplete search for relation fields
     */
    public function formipay_autocomplete_search() {

        check_ajax_referer( 'formipay-admin', '_wpnonce' );

        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( [ 'message' => 'Unauthorized' ] );
        }

        $post_type = isset($_REQUEST['post_type']) ? sanitize_text_field(wp_unslash($_REQUEST['post_type'])) : '';
        $search = isset($_REQUEST['search']) ? sanitize_text_field(wp_unslash($_REQUEST['search'])) : '';
        $include = isset($_REQUEST['include']) ? array_map('intval', (array) $_REQUEST['include']) : [];

        if (empty($post_type)) {
            wp_send_json_error( [ 'message' => 'Invalid request' ] );
        }

        // Resolve labels for specific IDs (pre-selected items)
        if (!empty($include)) {
            $query = get_posts([
                'post_type' => $post_type,
                'post__in' => $include,
                'posts_per_page' => -1,
                'post_status' => 'any',
            ]);
            $results = [];
            if (!empty($query)) {
                foreach ($query as $post) {
                    $results[] = [
                        'value' => $post->ID,
                        'label' => $post->post_title,
                    ];
                }
            }
            wp_send_json_success($results);
            return;
        }

        // Search by keyword
        if (strlen($search) < 2) {
            wp_send_json_error( [ 'message' => 'Invalid request' ] );
        }

        $query = get_posts([
            'post_type' => $post_type,
            's' => $search,
            'posts_per_page' => 20,
            'post_status' => ['publish', 'draft'],
        ]);

        $results = [];
        if (!empty($query)) {
            foreach ($query as $post) {
                $results[] = [
                    'value' => $post->ID,
                    'label' => $post->post_title,
                ];
            }
        }

        wp_send_json_success($results);
    }

}