<?php
/**
 * AKSRT admin follow operations support.
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

trait AKSRT_Admin_User_Controller_Follow_Operations {

    /**
     * POST /follow/toggle — 切换关注状态
     */
    public function follow_toggle(WP_REST_Request $request): WP_REST_Response {
        if (!class_exists('AKSRT_Follow')) {
            return $this->error('关注系统未启用', 500);
        }

        $params = $this->get_json_params($request);
        $target_user_id = (int) ($params['target_user_id'] ?? 0);
        $current_user_id = get_current_user_id();

        if ($target_user_id <= 0 || $target_user_id === $current_user_id) {
            return $this->error('参数无效');
        }

        $target_user = get_userdata($target_user_id);
        if (!$target_user) {
            return $this->error('用户不存在', 404);
        }

        $is_following = AKSRT_Follow::get_instance()->toggle($current_user_id, $target_user_id);

        return $this->success([
            'data' => [
                'is_following'   => $is_following,
                'follower_count' => AKSRT_Follow::get_instance()->get_follower_count($target_user_id),
            ],
        ]);
    }

    /**
     * GET /follow/status — 查询关注状态
     */
    public function follow_status(WP_REST_Request $request): WP_REST_Response {
        if (!class_exists('AKSRT_Follow')) {
            return $this->success(['data' => ['is_following' => false]]);
        }

        $target_user_id = (int) $request->get_param('target_user_id');
        $current_user_id = get_current_user_id();

        if ($target_user_id <= 0) {
            return $this->error('参数无效');
        }

        $is_following = AKSRT_Follow::get_instance()->is_following($current_user_id, $target_user_id);

        return $this->success([
            'data' => [
                'is_following'    => $is_following,
                'follower_count'  => AKSRT_Follow::get_instance()->get_follower_count($target_user_id),
                'following_count' => AKSRT_Follow::get_instance()->get_following_count($target_user_id),
            ],
        ]);
    }

    /**
     * GET /follow/counts — 获取关注/粉丝数
     */
    public function follow_counts(WP_REST_Request $request): WP_REST_Response {
        if (!class_exists('AKSRT_Follow')) {
            return $this->success(['data' => ['followers' => 0, 'following' => 0]]);
        }

        $user_id = (int) $request->get_param('user_id');
        if ($user_id <= 0) {
            return $this->error('参数无效');
        }

        return $this->success([
            'data' => [
                'followers' => AKSRT_Follow::get_instance()->get_follower_count($user_id),
                'following' => AKSRT_Follow::get_instance()->get_following_count($user_id),
            ],
        ]);
    }
}