<?php
/**
 * AKSRT admin shop product operations.
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

trait AKSRT_Admin_Shop_Controller_Product_Operations {

    public function get_overview(): WP_REST_Response {
        $product_count = 0;

        $post_type_obj = get_post_type_object('aksrt_product');
        if ($post_type_obj) {
            $counts = wp_count_posts('aksrt_product');
            $product_count = (int) ($counts->publish ?? 0);
        }

        $order_stats = ['total' => 0, 'pending' => 0, 'paid' => 0, 'revenue' => 0];
        if (class_exists('AKSRT_Order_Repository')) {
            $order_stats = AKSRT_Order_Repository::get_instance()->get_stats();
        }

        $revenue_stats = ['total' => 0, 'pending' => 0, 'settled' => 0];
        if (class_exists('AKSRT_Revenue')) {
            $revenue_stats = AKSRT_Revenue::get_instance()->get_stats();
        }

        $gateway_summary = [];
        if (class_exists('AKSRT_Payment_Gateway')) {
            $gateway_summary = AKSRT_Payment_Gateway::get_instance()->get_status_summary();
        }

        return $this->success([
            'data' => [
                'enabled'         => true,
                'product_count'   => $product_count,
                'order_count'     => $order_stats['total'],
                'order_pending'   => $order_stats['pending'] ?? 0,
                'revenue_total'   => $order_stats['revenue'] ?? 0,
                'revenue_pending' => $revenue_stats['pending'] ?? 0,
                'gateways'        => $gateway_summary,
            ],
        ]);
    }

    /**
     * GET /shop/products — 商品列表，支持 search、status、page、per_page
     */
    public function get_products(WP_REST_Request $request): WP_REST_Response {
        $page     = max(1, (int) $request->get_param('page'));
        $per_page = max(1, min(50, (int) $request->get_param('per_page'))) ?: 20;
        $search   = sanitize_text_field((string) $request->get_param('search'));
        $status   = sanitize_key((string) $request->get_param('status'));

        $query_args = [
            'post_type'      => 'aksrt_product',
            'posts_per_page' => $per_page,
            'paged'          => $page,
            'orderby'        => 'date',
            'order'          => 'DESC',
        ];

        if ($status !== '') {
            $query_args['post_status'] = $status;
        } else {
            $query_args['post_status'] = ['publish', 'draft', 'pending'];
        }

        if ($search !== '') {
            $query_args['s'] = $search;
        }

        $query = new WP_Query($query_args);

        $products = [];
        while ($query->have_posts()) {
            $query->the_post();
            $id = get_the_ID();
            $products[] = [
                'id'      => $id,
                'title'   => get_the_title(),
                'price'   => (float) get_post_meta($id, '_aksrt_price', true),
                'image'   => get_the_post_thumbnail_url($id, 'medium') ?: '',
                'stock'   => (int) get_post_meta($id, '_aksrt_stock', true),
                'sales'   => (int) get_post_meta($id, '_aksrt_sales', true),
                'status'  => get_post_status(),
                'created' => get_the_date('Y-m-d H:i'),
            ];
        }
        wp_reset_postdata();

        return $this->success([
            'data' => [
                'items'       => $products,
                'total'       => (int) $query->found_posts,
                'total_pages' => (int) $query->max_num_pages,
                'page'        => $page,
            ],
        ]);
    }

    /**
     * GET /shop/products/{id} — 单个商品详情
     */
    public function get_product(WP_REST_Request $request): WP_REST_Response {
        $id = (int) $request->get_param('id');
        $post = get_post($id);

        if (!$post || $post->post_type !== 'aksrt_product') {
            return $this->error('商品不存在', 404);
        }

        return $this->success([
            'data' => [
                'id'                => $post->ID,
                'title'             => $post->post_title,
                'content'           => $post->post_content,
                'excerpt'           => $post->post_excerpt,
                'price'             => (float) get_post_meta($post->ID, '_aksrt_price', true),
                'image'             => (string) (get_post_meta($post->ID, '_aksrt_product_image', true) ?: get_the_post_thumbnail_url($post->ID, 'medium') ?: ''),
                'stock'             => (int) get_post_meta($post->ID, '_aksrt_stock', true),
                'sales'             => (int) get_post_meta($post->ID, '_aksrt_sales', true),
                'status'            => $post->post_status,
                'created'           => get_the_date('Y-m-d H:i', $post),
                'modified'          => get_the_modified_date('Y-m-d H:i', $post),
                'categories'        => wp_get_post_terms($post->ID, 'aksrt_product_cat', ['fields' => 'names']) ?: [],
                'tags'              => wp_get_post_terms($post->ID, 'aksrt_product_tag', ['fields' => 'names']) ?: [],
                'gallery'           => get_post_meta($post->ID, '_aksrt_product_gallery', true) ?: [],
                'shipping_mode'     => (string) get_post_meta($post->ID, '_aksrt_shipping_mode', true),
                'shipping_fee'      => (float) get_post_meta($post->ID, '_aksrt_shipping_fee', true),
                'after_sale_policy' => (string) get_post_meta($post->ID, '_aksrt_after_sale_policy', true),
                'support_refund'    => get_post_meta($post->ID, '_aksrt_support_refund', true) !== '0',
            ],
        ]);
    }

    /**
     * POST /shop/products — 创建商品
     */
    public function create_product(WP_REST_Request $request): WP_REST_Response {
        $params = $this->get_json_params($request);

        $title   = sanitize_text_field((string) ($params['title'] ?? ''));
        $content = wp_kses_post((string) ($params['content'] ?? ''));
        $excerpt = sanitize_textarea_field((string) ($params['excerpt'] ?? ''));
        $price   = (float) ($params['price'] ?? 0);
        $stock   = (int) ($params['stock'] ?? 0);
        $status  = sanitize_key((string) ($params['status'] ?? 'publish'));
        $image   = esc_url_raw((string) ($params['image'] ?? ''));
        $gallery = is_array($params['gallery'] ?? null) ? array_values(array_filter(array_map('esc_url_raw', $params['gallery']))) : [];
        $shipping_mode = sanitize_key((string) ($params['shipping_mode'] ?? 'express'));
        $shipping_fee = max(0, (float) ($params['shipping_fee'] ?? 0));
        $after_sale_policy = sanitize_textarea_field((string) ($params['after_sale_policy'] ?? ''));
        $support_refund = !isset($params['support_refund']) || !empty($params['support_refund']);
        $author_id = max(0, (int) ($params['author_id'] ?? 0));

        if ($title === '') {
            return $this->error('商品名称不能为空');
        }

        $valid_statuses = ['publish', 'draft', 'pending'];
        if (!in_array($status, $valid_statuses, true)) {
            $status = 'draft';
        }

        $post_id = wp_insert_post([
            'post_type'    => 'aksrt_product',
            'post_title'   => $title,
            'post_content' => $content,
            'post_excerpt' => $excerpt,
            'post_status'  => $status,
            'post_author'  => $author_id > 0 ? $author_id : get_current_user_id(),
            'meta_input'   => [
                '_aksrt_price'                   => max(0, $price),
                '_aksrt_stock'                   => max(0, $stock),
                '_aksrt_sales'                   => 0,
                '_aksrt_score'                   => 0,
                '_aksrt_views'                   => 0,
                '_aksrt_favorite_count'          => 0,
                '_aksrt_product_gallery'         => $gallery,
                '_aksrt_shipping_mode'           => $shipping_mode,
                '_aksrt_shipping_fee'            => $shipping_fee,
                '_aksrt_after_sale_policy'       => $after_sale_policy,
                '_aksrt_support_refund'          => $support_refund ? '1' : '0',
                '_aksrt_product_video'           => is_array($params['product_video'] ?? null) ? array_values(array_filter(array_map('esc_url_raw', $params['product_video']))) : [],
                '_aksrt_product_params'          => sanitize_textarea_field((string) ($params['product_params'] ?? '')),
                '_aksrt_pay_modo'                => sanitize_key((string) ($params['pay_modo'] ?? '0')),
                '_aksrt_start_price'             => max(0, (float) ($params['start_price'] ?? 0)),
                '_aksrt_product_rebate'          => sanitize_text_field((string) ($params['product_rebate'] ?? '')),
                '_aksrt_limit_buy'               => max(-1, min(9999, (int) ($params['limit_buy'] ?? -1))),
                '_aksrt_limit_buy_note'          => sanitize_text_field((string) ($params['limit_buy_note'] ?? '')),
                '_aksrt_stock_type'              => sanitize_key((string) ($params['stock_type'] ?? 'all')),
                '_aksrt_user_required'           => sanitize_textarea_field((string) ($params['user_required'] ?? '')),
                '_aksrt_shipping_type'           => sanitize_key((string) ($params['shipping_type'] ?? $shipping_mode)),
                '_aksrt_shipping_delivery_desc'  => sanitize_text_field((string) ($params['shipping_delivery_desc'] ?? '')),
                '_aksrt_shipping_fee_type'       => sanitize_key((string) ($params['shipping_fee_type'] ?? 'free')),
                '_aksrt_shipping_fee_free_amount'=> max(0, (float) ($params['shipping_fee_free_amount'] ?? 0)),
                '_aksrt_after_sale_matrix'       => sanitize_textarea_field((string) ($params['after_sale_matrix'] ?? '')),
                '_aksrt_service'                 => sanitize_textarea_field((string) ($params['service'] ?? '')),
                '_aksrt_single_tab'              => sanitize_textarea_field((string) ($params['single_tab'] ?? '')),
                '_aksrt_content_layout'          => sanitize_key((string) ($params['content_layout'] ?? '')),
                '_aksrt_content_show_bg'         => sanitize_text_field((string) ($params['content_show_bg'] ?? '')),
                '_aksrt_delivery_note'           => sanitize_text_field((string) ($params['delivery_note'] ?? '')),
                '_aksrt_marketing_headline'      => sanitize_text_field((string) ($params['marketing_headline'] ?? '')),
                '_aksrt_shipping_tip'            => sanitize_text_field((string) ($params['shipping_tip'] ?? '')),
                '_aksrt_service_tip'             => sanitize_text_field((string) ($params['service_tip'] ?? '')),
            ],
        ], true);

        if (is_wp_error($post_id)) {
            return $this->error($post_id->get_error_message());
        }

        if (!empty($params['categories']) && is_array($params['categories'])) {
            wp_set_object_terms($post_id, $params['categories'], 'aksrt_product_cat');
        }
        if (!empty($params['tags']) && is_array($params['tags'])) {
            wp_set_object_terms($post_id, $params['tags'], 'aksrt_product_tag');
        }
        if ($image !== '') {
            update_post_meta($post_id, '_aksrt_product_image', $image);
        }

        return $this->success([
            'message' => __('商品已创建', 'aksrt'),
            'data'    => ['id' => $post_id],
        ], 201);
    }

    /**
     * POST /shop/products/{id} — 更新商品（含上下架）
     */
    public function update_product(WP_REST_Request $request): WP_REST_Response {
        $id = (int) $request->get_param('id');
        $post = get_post($id);

        if (!$post || $post->post_type !== 'aksrt_product') {
            return $this->error('商品不存在', 404);
        }

        $params = $this->get_json_params($request);
        $update = ['ID' => $id];

        if (isset($params['title'])) {
            $update['post_title'] = sanitize_text_field($params['title']);
        }
        if (isset($params['content'])) {
            $update['post_content'] = wp_kses_post($params['content']);
        }
        if (isset($params['excerpt'])) {
            $update['post_excerpt'] = sanitize_textarea_field($params['excerpt']);
        }
        if (isset($params['status'])) {
            $new_status = sanitize_key($params['status']);
            $valid_statuses = ['publish', 'draft', 'pending', 'trash'];
            if (in_array($new_status, $valid_statuses, true)) {
                $update['post_status'] = $new_status;
            }
        }

        $meta = [];
        if (isset($params['price'])) {
            $meta['_aksrt_price'] = max(0, (float) $params['price']);
        }
        if (isset($params['stock'])) {
            $meta['_aksrt_stock'] = max(0, (int) $params['stock']);
        }
        if (isset($params['gallery']) && is_array($params['gallery'])) {
            $meta['_aksrt_product_gallery'] = array_values(array_filter(array_map('esc_url_raw', $params['gallery'])));
        }
        if (isset($params['shipping_mode'])) {
            $meta['_aksrt_shipping_mode'] = sanitize_key((string) $params['shipping_mode']);
        }
        if (isset($params['shipping_fee'])) {
            $meta['_aksrt_shipping_fee'] = max(0, (float) $params['shipping_fee']);
        }
        if (isset($params['after_sale_policy'])) {
            $meta['_aksrt_after_sale_policy'] = sanitize_textarea_field((string) $params['after_sale_policy']);
        }
        if (isset($params['support_refund'])) {
            $meta['_aksrt_support_refund'] = !empty($params['support_refund']) ? '1' : '0';
        }
        if (isset($params['product_video']) && is_array($params['product_video'])) {
            $meta['_aksrt_product_video'] = array_values(array_filter(array_map('esc_url_raw', $params['product_video'])));
        }
        if (isset($params['product_params'])) {
            $meta['_aksrt_product_params'] = sanitize_textarea_field((string) $params['product_params']);
        }
        if (isset($params['pay_modo'])) {
            $meta['_aksrt_pay_modo'] = sanitize_key((string) $params['pay_modo']);
        }
        if (isset($params['start_price'])) {
            $meta['_aksrt_start_price'] = max(0, (float) $params['start_price']);
        }
        if (isset($params['product_rebate'])) {
            $meta['_aksrt_product_rebate'] = sanitize_text_field((string) $params['product_rebate']);
        }
        if (isset($params['limit_buy'])) {
            $meta['_aksrt_limit_buy'] = max(-1, min(9999, (int) $params['limit_buy']));
        }
        if (isset($params['limit_buy_note'])) {
            $meta['_aksrt_limit_buy_note'] = sanitize_text_field((string) $params['limit_buy_note']);
        }
        if (isset($params['stock_type'])) {
            $meta['_aksrt_stock_type'] = sanitize_key((string) $params['stock_type']);
        }
        if (isset($params['stock_opts']) && is_array($params['stock_opts'])) {
            $meta['_aksrt_stock_opts'] = wp_json_encode($params['stock_opts']);
        }
        if (isset($params['user_required'])) {
            $meta['_aksrt_user_required'] = sanitize_textarea_field((string) $params['user_required']);
        }
        if (isset($params['shipping_type'])) {
            $meta['_aksrt_shipping_type'] = sanitize_key((string) $params['shipping_type']);
        }
        if (isset($params['shipping_delivery_desc'])) {
            $meta['_aksrt_shipping_delivery_desc'] = sanitize_text_field((string) $params['shipping_delivery_desc']);
        }
        if (isset($params['auto_delivery']) && is_array($params['auto_delivery'])) {
            $meta['_aksrt_auto_delivery'] = wp_json_encode($params['auto_delivery']);
        }
        if (isset($params['shipping_fee_type'])) {
            $meta['_aksrt_shipping_fee_type'] = sanitize_key((string) $params['shipping_fee_type']);
        }
        if (isset($params['shipping_fee_free_amount'])) {
            $meta['_aksrt_shipping_fee_free_amount'] = max(0, (float) $params['shipping_fee_free_amount']);
        }
        if (isset($params['after_sale_matrix'])) {
            $meta['_aksrt_after_sale_matrix'] = sanitize_textarea_field((string) $params['after_sale_matrix']);
        }
        if (isset($params['service'])) {
            $meta['_aksrt_service'] = sanitize_textarea_field((string) $params['service']);
        }
        if (isset($params['single_tab'])) {
            $meta['_aksrt_single_tab'] = sanitize_textarea_field((string) $params['single_tab']);
        }
        if (isset($params['content_layout'])) {
            $meta['_aksrt_content_layout'] = sanitize_key((string) $params['content_layout']);
        }
        if (isset($params['content_show_bg'])) {
            $meta['_aksrt_content_show_bg'] = sanitize_text_field((string) $params['content_show_bg']);
        }
        if (isset($params['delivery_note'])) {
            $meta['_aksrt_delivery_note'] = sanitize_text_field((string) $params['delivery_note']);
        }
        if (isset($params['marketing_headline'])) {
            $meta['_aksrt_marketing_headline'] = sanitize_text_field((string) $params['marketing_headline']);
        }
        if (isset($params['shipping_tip'])) {
            $meta['_aksrt_shipping_tip'] = sanitize_text_field((string) $params['shipping_tip']);
        }
        if (isset($params['service_tip'])) {
            $meta['_aksrt_service_tip'] = sanitize_text_field((string) $params['service_tip']);
        }
        if (!empty($meta)) {
            $update['meta_input'] = $meta;
        }

        $result = wp_update_post($update, true);

        if (is_wp_error($result)) {
            return $this->error($result->get_error_message());
        }

        if (isset($params['categories']) && is_array($params['categories'])) {
            wp_set_object_terms($id, $params['categories'], 'aksrt_product_cat');
        }
        if (isset($params['tags']) && is_array($params['tags'])) {
            wp_set_object_terms($id, $params['tags'], 'aksrt_product_tag');
        }
        if (isset($params['image'])) {
            update_post_meta($id, '_aksrt_product_image', esc_url_raw((string) $params['image']));
        }

        return $this->success([
            'message' => __('商品已更新', 'aksrt'),
        ]);
    }
}