<?php
namespace app\common\model;

use think\Model;

class FriendNotification extends Model
{
    protected $name = 'friend_notifications';
    protected $autoWriteTimestamp = 'int';
    protected $createTime = 'createtime';
    protected $updateTime = 'updatetime';

    // 通知类型常量
    const TYPE_FRIEND_REQUEST = 1;        // 好友申请
    const TYPE_REQUEST_RESULT = 2;        // 申请结果

    protected $append = [
        'createtime_text',
    ];


    protected $type = [
        'id' => 'integer',
        'to_user_id' => 'integer',
        'from_user_id' => 'integer',
        'type' => 'integer',
        'related_id' => 'integer',
        'is_read' => 'integer'
    ];

    public function getCreatetimeTextAttr($value, $data)
    {
        $value = $value ? $value : ($data['createtime'] ?? "");
        return is_numeric($value) ? date("Y-m-d H:i:s", $value) : $value;
    }


    // 关联用户信息
    public function user()
    {
        return $this->belongsTo('User', 'user_id', 'id');
    }

    public function fromUser()
    {
        return $this->belongsTo('User', 'from_user_id', 'id');
    }

    /**
     * 创建好友申请通知
     */
    public static function createFriendRequestNotification($params)
    {

        $message=$params['content'];
        $toUserId = $params['to_user_id'];
        $fromUserId = $params['from_user_id'];
        $content = $message ?
            "用户 " . User::get($fromUserId)['nickname'] . " 申请添加您为好友：" . $message :
            "用户 " . User::get($fromUserId)['nickname'] . " 申请添加您为好友";

        return self::create([
            'to_user_id' => $toUserId,
            'type' => self::TYPE_FRIEND_REQUEST,
            'content' => $content,
        ]);
    }

    /**
     * 创建申请结果通知
     */
    public static function createRequestResultNotification($params)
    {
        $result = $params['status'];
        $fromUserId = $params['from_user_id'];
        $toUserId = $params['to_user_id'];
        $resultText = $result == 1 ? '同意' : '拒绝';
        $content = "用户 " . User::get($fromUserId)['nickname'] . " 已{$resultText}您的好友申请";

        return self::create([
            'to_user_id' => $toUserId,
            'type' => self::TYPE_REQUEST_RESULT,
            'content' => $content,
        ]);
    }

    /**
     * 创建好友添加成功通知
     */
    public static function createFriendAddedNotification($userId, $friendId)
    {
        $content = "您与 " . User::get($friendId)['nickname'] . " 已成为好友";

        return self::create([
            'user_id' => $userId,
            'from_user_id' => $friendId,
            'type' => self::TYPE_FRIEND_ADDED,
            'content' => $content
        ]);
    }

    /**
     * 获取用户未读通知数量
     */
    public static function getUnreadCount($userId)
    {
        return self::where(['to_user_id' => $userId, 'is_read' => 0])->count();
    }

    /**
     * 标记通知为已读
     */
    public static function markAsRead($notificationId, $userId = null)
    {
        $where = ['id' => $notificationId];
        if ($userId) {
            $where['to_user_id'] = $userId;
        }
        return self::update(['is_read' => 1], $where);
    }

    /**
     * 批量标记通知为已读
     */
    public static function markBatchAsRead($user_id, $ids = [])
    {
        $where = ['to_user_id' => $user_id];
        if (!empty($ids)) {
            $where['id'] = ['in', $ids];
        }
        return self::where($where)->update(['is_read' => 1]);
    }

    /**
     * 获取用户通知列表
     */
    public static function getNotificationList($userId)
    {
        return self::where(['to_user_id' => $userId])
            ->order('id DESC')
            ->paginate();
    }

    /**
     * 删除过期通知（保留最近30天的记录）
     */
    public static function cleanupExpiredNotifications()
    {
        $expireTime = time() - 30 * 24 * 3600; // 30天前的时间戳
        return self::where('created_at', '<', $expireTime)->delete();
    }
}