<?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\common\model;

use cores\BaseModel;
use think\model\Collection;
use think\Paginator;

/**
 * 聊天消息模型
 * Class Imchat
 * @package app\common\model
 */
class Imchat extends BaseModel
{

    protected $globalScope = [''];
    
    // 定义表名
    protected $name = 'imchat';

    // 定义主键
    protected $pk = 'id';

    /**
     * 获取列表
     * @param array $param 查询条件
     * @param int $listRows 分页数量
     * @return mixed
     * @throws \think\db\exception\DbException
     */
    public function getList(array $param = [], int $listRows = 15, $field='')
    {
        // 筛选条件
        $query = $this->getQueryFilter($param);
        // 排序条件
        $sort = $this->setQuerySort($param);

        // 执行查询
        $list = $query->alias($this->name)
            ->order($sort)
            ->field($field? $field : '*')
            ->paginate($listRows);

        // 整理列表数据并返回
        return $list;
    }

    /**
     * 设置数据
     * @param Collection|Paginator $list 商品列表
     * @param callable|null $callback 回调函数
     * @return mixed
     */
    protected function setListData($list, callable $callback = null)
    {
        if ($list->isEmpty()) return $list;
        // 遍历商品列表整理数据
        foreach ($list as &$item) {
            $data = $this->setData($item, $callback);
        }
        return $list;
    }

    /**
     * 整理数据
     * @param Collection|static $info
     * @param callable|null $callback
     * @return mixed
     */
    protected function setData($info, callable $callback = null)
    {
        // 回调函数
        is_callable($callback) && call_user_func($callback, $info);
        return $info->hidden(array_merge($this->hidden, ['']));
    }

    /**
     * 检索查询条件
     * @param array $params
     * @return \think\db\BaseQuery
     */
    private function getQueryFilter(array $params)
    {
        $filter = [];

        // 实例化新查询对象
        $query = $this->getNewQuery();

        // 发送者
//        !empty($params['from_user_id']) && $filter[] = ['from_user_id', '=', "{$params['from_user_id']}"];

        // 接受者
        !empty($params['to_user_id']) && $filter[] = ['to_user_id', '=', "{$params['to_user_id']}"];

        // 学校
        !empty($params['school_id']) && $filter[] = ['school_id', '=', "{$params['school_id']}"];

        // 咨询专业
        !empty($params['speciality_id']) && $filter[] = ['speciality_id', '=', "{$params['speciality_id']}"];

        // 是否已读
        !empty($params['is_push']) && $filter[] = ['is_push', '=', "{$params['is_push']}"];

        !empty($params['chat_key']) && $filter[] = ['chat_key', '=', "{$params['chat_key']}"];

        // 实例化新查询对象
        return $query->where($filter)->where(function($query) use ($params){
            // 关键词
            if(!empty($params['keyword'])){
                $query->where('school_name','like', "%{$params['keyword']}%");
            }

            $sendTime = isset($params['lastMessageTime'])? $params['lastMessageTime'] : '';
            if($sendTime>0){
                $query->where('sendtime','<', $sendTime);
            }
        });
    }


    /**
     * 检索排序条件
     * @param array $param
     * @return array|string[]
     */
    private function setQuerySort(array $param = [])
    {
        $params = $this->setQueryDefaultValue($param, [
            'sortType' => 'all',    // 排序类型
            'sendtime' => false,   // 排序 (true高到低 false低到高)
        ]);
        // 排序规则
        $sort = [];
        if ($params['sortType'] === 'all') {
            $sort = ['sendtime' => 'desc'];
        } elseif ($params['sortType'] === 'view') {
            $sort = ['id' => 'desc'];
        }

        return array_merge($sort, [$this->getPk() => 'desc']);
    }

}