<?php
// +----------------------------------------------------------------------
// | 商城系统 [ 致力于通过产品和服务，帮助商家高效化开拓市场 ]
// +----------------------------------------------------------------------
// | Copyright (c) 2017~2021 https://www.thinkphp.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed 这不是一个自由软件，不允许对程序代码以任何形式任何目的的再发行
// +----------------------------------------------------------------------
// | Author: thinkphp <admin@yiovo.com>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace app\api\model;

use app\common\model\Imchat as ImchatModel;

/**
 * 聊天消息模型
 * Class Imchat
 * @package app\api\model
 */
class Imchat extends ImchatModel
{

    /**
     * 获取列表
     * @param array $param 查询条件
     * @param int $listRows 分页数量
     * @return mixed|\think\model\Collection|\think\Paginator
     * @throws \think\db\exception\DbException
     */
    public function getList(array $param = [], int $listRows = 15)
    {
        // 整理查询参数
        $params = array_merge($param, []);
        // 获取商品列表
        $list = parent::getList($params, $listRows);
        if ($list->isEmpty()) {
            return $list;
        }

        // 整理列表数据并返回
        return $this->setListDataFromApi($list);
    }

    public function getListByUser(int $userId, array $param = [], int $listRows = 15)
    {
        $param = array_merge($param, ['user_id'=> $userId,'data_type'=>'msg']);
        $list =  $this->alias($this->name)
                ->leftJoin('user u','u.user_id='.$this->name.'.from_user_id')
                ->leftJoin('user_info ui','ui.user_id='.$this->name.'.from_user_id')
                ->where([$this->name.'.to_user_id'=> $userId])
                ->where(function($query) use($param){
                    $keyword = isset($param['keyword'])? $param['keyword'] : '';
                    if($keyword){
                        $query->where('from_user_name','like',"%{$keyword}%");
                    }
                })
                ->field($this->name.".*, u.user_type,ui.admission_year")
                ->group($this->name.'.from_user_id')
                ->order($this->name.'.sendtime','desc')
                ->paginate($listRows);

        return $this->setListDataFromApi($list, $param);
    }

    /**
     * 设置展示的数据 api模块
     * @param $info
     * @return mixed
     */
    private function setListDataFromApi($info, $params=[])
    {
        return $this->setListData($info, function ($data) use ($params){

            // 统计最新未读消息
            $dataType = isset($params['data_type'])? $params['data_type'] : '';
            $userId = isset($params['user_id'])? $params['user_id'] : 0;
            $fromUserId = isset($data['from_user_id'])? $data['from_user_id'] : 0;
            if($dataType == 'msg'){
                $data['unread_num'] = $userId && $fromUserId? Imchat::getUnreadCount($userId, $fromUserId) : 0;
            }

            // 整理数据 api模块
            $this->setDataFromApi($data);

            // 隐藏冗余的字段
            $this->hidden(array_merge($this->hidden, ['']));
        });
    }

    /**
     * 整理数据 api模块
     * @param $info
     * @return mixed
     */
    private function setDataFromApi($info)
    {
        return $this->setData($info, function ($data) {
            // 头像
            $data['to_user_avatar'] = isset($data['to_user_avatar']) && $data['to_user_avatar']? getPreview($data['to_user_avatar']) : '';
            $data['from_user_avatar'] = isset($data['from_user_avatar']) && $data['from_user_avatar']? getPreview($data['from_user_avatar']) : '';

            //
            if(isset($data['user_type'])){
                $userType = isset($data['user_type'])? $data['user_type'] : 0;
                $admissionYear = isset($data['admission_year'])? $data['admission_year'] : '';
                $data['user_type_text'] = $userType == 3? '招生老师' : ($admissionYear? $admissionYear.'级' : '学生');
            }

            $sendTime = $data['sendtime']? strtotime($data['sendtime']) : 0;
            $data['sendtime_text'] = $sendTime? getTimeText($sendTime) : '';

        });
    }

    /**
     * 获取未读消息数量
     * @param $userId
     * @return int
     */
    public static function getUnreadCount($userId, $fromUserId)
    {
        return self::where(['from_user_id'=> $fromUserId,'to_user_id'=> $userId,'is_push'=>1])->count('id');
    }
}