<?php
defined('ABSPATH') || exit;

trait AKSRT_Forum_Board_Service_Part_3 {


    /**
     * Check if a user is a plate_cat moderator (分区版主).
     */
    public function is_cat_moderator(int $user_id, int $cat_id): bool {
        if ($user_id <= 0) {
            return false;
        }
        if ($this->forum->is_forum_admin($user_id)) {
            return true;
        }
        $moderator_ids = get_term_meta($cat_id, '_aksrt_cat_moderator', true);
        if (!is_array($moderator_ids)) {
            return false;
        }
        return in_array($user_id, array_map('intval', $moderator_ids), true);
    }

    /**
     * Get plates sorted by a specified dimension (§7.2 多维排序).
     */
    public function get_sorted_plates(string $orderby = 'menu_order', string $order = 'ASC', int $limit = 50): array {
        $allowed = [
            'name'              => 'title',
            'date'              => 'date',
            'modified'          => 'modified',
            'menu_order'        => 'menu_order',
            'last_post'         => '_aksrt_last_post',
            'last_reply'        => '_aksrt_last_reply',
            'posts_count'       => '_aksrt_posts_count',
            'reply_count'       => '_aksrt_reply_count',
            'today_reply_count' => '_aksrt_today_reply_count',
            'views'             => '_aksrt_views',
            'follow_count'      => '_aksrt_follow_count',
            'rand'              => 'rand',
        ];

        $query_args = [
            'post_type'      => 'aksrt_forum_plate',
            'post_status'    => 'publish',
            'posts_per_page' => $limit,
            'order'          => strtoupper($order) === 'ASC' ? 'ASC' : 'DESC',
        ];

        if (isset($allowed[$orderby])) {
            $meta_key = $allowed[$orderby];
            if (str_starts_with($meta_key, '_aksrt_')) {
                $query_args['orderby'] = 'meta_value_num';
                $query_args['meta_key'] = $meta_key;
            } else {
                $query_args['orderby'] = $meta_key;
            }
        } else {
            $query_args['orderby'] = 'menu_order';
        }

        $posts = get_posts($query_args);
        $plates = [];
        foreach ($posts as $post) {
            $plates[] = $this->build_plate_payload($post);
        }
        return $plates;
    }

    public function maybe_migrate_boards(): void {
        if (get_option('aksrt_forum_boards_migrated')) {
            return;
        }

        $old_boards = get_option('aksrt_forum_boards', []);
        if (!is_array($old_boards) || empty($old_boards)) {
            update_option('aksrt_forum_boards_migrated', time());
            return;
        }

        foreach ($old_boards as $board) {
            $name = sanitize_text_field((string) ($board['name'] ?? ''));
            if ($name === '') {
                continue;
            }

            $existing = get_terms([
                'taxonomy' => 'aksrt_forum_board',
                'name' => $name,
                'hide_empty' => false,
                'fields' => 'ids',
            ]);

            if (!is_wp_error($existing) && !empty($existing)) {
                $term_id = (int) $existing[0];
            } else {
                $result = wp_insert_term($name, 'aksrt_forum_board', [
                    'description' => sanitize_textarea_field((string) ($board['description'] ?? '')),
                ]);
                if (is_wp_error($result)) {
                    continue;
                }
                $term_id = (int) $result['term_id'];
            }

            $icon = sanitize_text_field((string) ($board['icon'] ?? ''));
            if ($icon !== '') {
                update_term_meta($term_id, '_aksrt_icon', $icon);
            }

            update_term_meta($term_id, '_aksrt_sort_order', (int) ($board['sort_order'] ?? $term_id));

            if (!empty($board['moderators']) && is_array($board['moderators'])) {
                update_term_meta($term_id, '_aksrt_moderators', array_map('intval', $board['moderators']));
            }
        }

        update_option('aksrt_forum_boards_migrated', time());
    }

    public function ajax_follow_plate(): void {
        check_ajax_referer('aksrt_forum_action', '_nonce');

        $user_id = get_current_user_id();
        if ($user_id <= 0) {
            wp_send_json_error(['message' => __('请先登录', 'aksrt')]);
        }

        $plate_id = (int) ($_POST['plate_id'] ?? 0);
        if ($plate_id <= 0) {
            wp_send_json_error(['message' => __('版块不存在', 'aksrt')]);
        }

        $result = $this->toggle_follow_plate($user_id, $plate_id);
        wp_send_json_success($result);
    }
}