<?php
/**
 * AKSRT Admin — Shop Controller
 *
 * Owns REST routes for the "商城&商品" domain.
 * Provides product CRUD, order management, and shop overview.
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

class AKSRT_Admin_Shop_Controller extends AKSRT_Admin_Controller_Base {
    use AKSRT_Admin_Shop_Controller_Product_Admin_Columns;
    use AKSRT_Admin_Shop_Controller_Frontend_Flow_Operations;
    use AKSRT_Admin_Shop_Controller_Product_Operations;
    use AKSRT_Admin_Shop_Controller_Order_Operations;
    use AKSRT_Admin_Shop_Controller_Fulfillment_Operations;
    use AKSRT_Admin_Shop_Controller_Coupon_Gateway_Operations;
    use AKSRT_Admin_Shop_Controller_Variant_Export_Operations;

    private static $instance = null;
    private $admin;

    public static function get_instance(): self {
        if (null === self::$instance) self::$instance = new self();
        return self::$instance;
    }

    public function set_admin(AKSRT_Admin $admin): void {
        $this->admin = $admin;
    }

    public function register_routes(): void {
        register_rest_route(self::API_NAMESPACE, '/shop/frontend/checkout/preview', [
            'methods'             => 'POST',
            'callback'            => [$this, 'preview_checkout'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/orders', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_frontend_order'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/orders', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_frontend_orders'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/orders/(?P<order_number>[A-Za-z0-9]+)/pay', [
            'methods'             => 'POST',
            'callback'            => [$this, 'pay_frontend_order'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/orders/(?P<order_number>[A-Za-z0-9]+)/cancel', [
            'methods'             => 'POST',
            'callback'            => [$this, 'cancel_frontend_order'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/orders/(?P<order_number>[A-Za-z0-9]+)', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_frontend_order'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/orders/(?P<order_number>[A-Za-z0-9]+)/after-sale', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_frontend_after_sale'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        // ── Address book CRUD (frontend) ──

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/address', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_frontend_addresses'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/address', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_frontend_address'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/address/(?P<id>\d+)', [
            'methods'             => 'POST',
            'callback'            => [$this, 'update_frontend_address'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/address/(?P<id>\d+)', [
            'methods'             => 'DELETE',
            'callback'            => [$this, 'delete_frontend_address'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/address/(?P<id>\d+)/default', [
            'methods'             => 'POST',
            'callback'            => [$this, 'set_default_frontend_address'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/products', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_frontend_product'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/products/(?P<id>\d+)', [
            'methods'             => 'POST',
            'callback'            => [$this, 'update_frontend_product'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        // Cart endpoints (§6.4)
        register_rest_route(self::API_NAMESPACE, '/shop/frontend/cart', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_cart'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/cart/add', [
            'methods'             => 'POST',
            'callback'            => [$this, 'handle_add_to_cart'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/cart/reduce', [
            'methods'             => 'POST',
            'callback'            => [$this, 'handle_reduce_from_cart'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/cart/remove', [
            'methods'             => 'POST',
            'callback'            => [$this, 'handle_remove_from_cart'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/cart/remove-multi', [
            'methods'             => 'POST',
            'callback'            => [$this, 'handle_remove_multi_from_cart'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/cart/empty', [
            'methods'             => 'POST',
            'callback'            => [$this, 'handle_empty_cart'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/cart/count', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_cart_count'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        // Shop overview / dashboard
        register_rest_route(self::API_NAMESPACE, '/shop/overview', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_overview'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Product taxonomy options used by the product editor.
        register_rest_route(self::API_NAMESPACE, '/shop/products/taxonomy', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_product_taxonomy'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Create product category or tag term for the product editor.
        register_rest_route(self::API_NAMESPACE, '/shop/products/taxonomy', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_product_taxonomy_term'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Product list
        register_rest_route(self::API_NAMESPACE, '/shop/products', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_products'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Product create
        register_rest_route(self::API_NAMESPACE, '/shop/products', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_product'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Product update
        register_rest_route(self::API_NAMESPACE, '/shop/products/(?P<id>\d+)', [
            'methods'             => 'POST',
            'callback'            => [$this, 'update_product'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Product single read
        register_rest_route(self::API_NAMESPACE, '/shop/products/(?P<id>\d+)', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_product'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Order list
        register_rest_route(self::API_NAMESPACE, '/shop/orders', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_orders'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Order single read
        register_rest_route(self::API_NAMESPACE, '/shop/orders/(?P<order_number>[A-Za-z0-9]+)', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_order'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Order status update — canonical field is order_number
        register_rest_route(self::API_NAMESPACE, '/shop/orders/update-status', [
            'methods'             => 'POST',
            'callback'            => [$this, 'update_order_status'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Gateway status
        register_rest_route(self::API_NAMESPACE, '/shop/gateways', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_gateways'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Coupon list (admin)
        register_rest_route(self::API_NAMESPACE, '/shop/coupons', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_coupons'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Coupon create (admin)
        register_rest_route(self::API_NAMESPACE, '/shop/coupons', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_coupon'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Coupon disable (admin)
        register_rest_route(self::API_NAMESPACE, '/shop/coupons/(?P<id>\d+)/disable', [
            'methods'             => 'POST',
            'callback'            => [$this, 'disable_coupon'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // ── After Sale ──

        // After-sale list (admin)
        register_rest_route(self::API_NAMESPACE, '/shop/after-sale', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_after_sale_list'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // After-sale create (admin)
        register_rest_route(self::API_NAMESPACE, '/shop/after-sale', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_after_sale'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // After-sale status update (admin)
        register_rest_route(self::API_NAMESPACE, '/shop/after-sale/(?P<id>\d+)/update-status', [
            'methods'             => 'POST',
            'callback'            => [$this, 'update_after_sale_status'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/after-sale/(?P<id>\d+)', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_after_sale_detail'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // ── Shipping ──

        // Shipping list (admin)
        register_rest_route(self::API_NAMESPACE, '/shop/shipping', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_shipping_list'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Shipping create (admin)
        register_rest_route(self::API_NAMESPACE, '/shop/shipping', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_shipping'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Shipping status update (admin)
        register_rest_route(self::API_NAMESPACE, '/shop/shipping/(?P<id>\d+)/update-status', [
            'methods'             => 'POST',
            'callback'            => [$this, 'update_shipping_status'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/shipping/(?P<id>\d+)', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_shipping_detail'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/shipping/batch-update-status', [
            'methods'             => 'POST',
            'callback'            => [$this, 'batch_update_shipping_status'],
            'permission_callback' => [$this, 'check_permission'],
        ]);


        // ── R68: Order export + confirm receipt + after-sale reasons ──

        register_rest_route(self::API_NAMESPACE, '/shop/orders/export', [
            'methods'             => 'GET',
            'callback'            => [$this, 'export_orders'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // ── R69: Frontend after-sale reasons (§6.8) ──

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/after-sale/reasons', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_frontend_after_sale_reasons'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/orders/(?P<order_number>[A-Za-z0-9]+)/confirm-receipt', [
            'methods'             => 'POST',
            'callback'            => [$this, 'confirm_receipt'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/orders/(?P<order_number>[A-Za-z0-9]+)/rebuy', [
            'methods'             => 'POST',
            'callback'            => [$this, 'rebuy_frontend_order'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

                register_rest_route(self::API_NAMESPACE, '/shop/frontend/products/archive', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_frontend_product_archive'],
            'permission_callback' => '__return_true',
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/revenue', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_frontend_revenue'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/revenue/withdraw', [
            'methods'             => 'POST',
            'callback'            => [$this, 'create_frontend_withdraw'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/frontend/orders/(?P<order_number>[A-Za-z0-9]+)/review', [
            'methods'             => 'POST',
            'callback'            => [$this, 'submit_frontend_product_review'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

register_rest_route(self::API_NAMESPACE, '/shop/frontend/products/(?P<id>\d+)/favorite', [
            'methods'             => 'POST',
            'callback'            => [$this, 'toggle_frontend_product_favorite'],
            'permission_callback' => [$this, 'check_logged_in_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/shop/after-sale/reasons', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_after_sale_reasons'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // ── Product Variants / SKU ──

        // List variants for a product
        register_rest_route(self::API_NAMESPACE, '/shop/products/(?P<id>\d+)/variants', [
            'methods'             => 'GET',
            'callback'            => [$this, 'get_product_variants'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Save variants for a product (replace all)
        register_rest_route(self::API_NAMESPACE, '/shop/products/(?P<id>\d+)/variants', [
            'methods'             => 'POST',
            'callback'            => [$this, 'save_product_variants'],
            'permission_callback' => [$this, 'check_permission'],
        ]);

        // Delete a variant
        register_rest_route(self::API_NAMESPACE, '/shop/variants/(?P<id>\d+)', [
            'methods'             => 'DELETE',
            'callback'            => [$this, 'delete_variant'],
            'permission_callback' => [$this, 'check_permission'],
        ]);
    }

    public function check_logged_in_permission(): bool {
        return is_user_logged_in();
    }

}