<?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, $field='')
    {
        // 整理查询参数
        $params = array_merge($param, []);

        // 获取列表
        $list = parent::getList($params, $listRows,'id,from_user_id,to_user_id,message,chat_key,sendtime,is_push');
        if ($list->isEmpty()) {
            return $list;
        }

        // 整理列表数据并返回
        return $this->setListDataFromApi($list, $params);
    }

    /**
     * @param int $userId
     * @param array $param
     * @param int $listRows
     * @return mixed
     */
    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='.$this->name.'.from_user_id')
                ->leftJoin('user u1','u.user_id='.$this->name.'.to_user_id')
                ->where(function($query) use($userId){
                    $query->where($this->name.'.from_user_id','=', $userId)
                    ->whereOr($this->name.'.to_user_id','=', $userId);
                })
                ->where(function($query) use($param){
                    $keyword = isset($param['keyword'])? $param['keyword'] : '';
                    if($keyword){
                        $query->where('u.nick_name','like',"%{$keyword}%")
                            ->whereOr('u1.nick_name','like',"%{$keyword}%");
                    }
                })
                ->field($this->name.".*")
                ->group($this->name.'.chat_key')
                ->order($this->name.'.sendtime desc,'.$this->name.'.is_push desc')
                ->paginate($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){
            // 处理消息已读
            $fromUserId = isset($params['from_user_id'])? $params['from_user_id'] : 0;
            if($fromUserId){
                if($data['is_push'] == 1 && $data['to_user_id'] == $fromUserId){
                    ImchatModel::where(['id'=> $data['id']])->save(['is_push'=> 0]);
                    $data['is_push'] = 0;
                }
            }

            // 处理最新消息
            if(isset($params['data_type'])){
                $info = self::getNewMessageByChat($data['chat_key']);
                $data['message'] = isset($info['message'])? $info['message'] : '';
                $data['is_push'] = isset($info['is_push'])? $info['is_push'] : 0;
                $data['sendtime'] = isset($info['sendtime'])? $info['sendtime'] : 0;


                // 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;
                $toUserId = isset($data['to_user_id'])? $data['to_user_id'] : 0;
                $data['unread_num'] = 0;
                $data['user_type'] = 1;
                if($dataType == 'msg'){
                    $data['unread_num'] = $userId && $fromUserId && $userId != $fromUserId? Imchat::getUnreadCount($userId, $fromUserId) : 0;
                }

                // 收到消息
                if($userId == $toUserId)
                {
                    $data['msg_type'] = 1;
                    $data['show_user_id'] = $fromUserId;
                    $info = User::cacheDetail($fromUserId);
                    $data['nick_name'] = $info['nick_name'];
                    $data['avatar_url'] = $info['avatar_url'];
                    $data['user_type'] = $info['user_type'];
                    $data['user_school_id'] = isset($info['info']['school_id'])? $info['info']['school_id'] : 0;
                    $admissionYear = isset($info['info']['admission_year'])? $info['info']['admission_year'] : '';
                    $data['user_type_text'] = $data['user_type'] == 3? '招生老师' : ($admissionYear? $admissionYear.'级' : '学生');

                }
                // 发送消息
                if($userId == $fromUserId)
                {
                    $data['msg_type'] = 2;
                    $data['show_user_id'] = $toUserId;
                    $info = User::cacheDetail($toUserId);
                    $info['avatar'] = isset($info['avatar'])? $info['avatar'] : [];
                    $info['info'] = isset($info['info'])? $info['info'] : [];
                    $data['nick_name'] = $info['nick_name'];
                    $data['avatar_url'] = $info['avatar_url'];
                    $data['user_type'] = $info['user_type'];
                    $data['user_school_id'] = isset($info['info']['school_id'])? $info['info']['school_id'] : 0;
                    $admissionYear = isset($info['info']['admission_year'])? $info['info']['admission_year'] : '';
                    $data['user_type_text'] = $data['user_type'] == 3? '招生老师' : ($admissionYear? $admissionYear.'级' : '学生');

                }
                // 用户学校
                if($data['user_type'] == 3){
                    $data['user_school_name'] = $data['user_school_id']? School::getSchoolField($data['user_school_id']) : '';
                }else{
                    $data['user_school_name'] = $data['user_school_id']? SourceShool::getSchoolField($data['user_school_id']) : '';
                }
            }

            // 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) {
            $sendTime = $data['sendtime']? intval($data['sendtime']) : 0;
            $data['sendtime_text'] = $sendTime? getTimeText($sendTime) : '';

        });
    }

    /**
     * 获取最新消息
     * @param $chatKey
     * @return Imchat|array|mixed|\think\Model|null
     * @throws \think\db\exception\DataNotFoundException
     * @throws \think\db\exception\DbException
     * @throws \think\db\exception\ModelNotFoundException
     */
    public static function getNewMessageByChat($chatKey)
    {
        return self::where(['chat_key'=> $chatKey])
            ->order('sendtime desc')
            ->field('message,from_user_id,to_user_id,sendtime,is_push')
            ->find();

    }

    /**
     * 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');
    }
}