<?php
namespace app\api\imsocket;
use think\facade\Db;
use think\worker\Server;
use GatewayWorker\Lib\Gateway;
class imsocket extends Server
{
    protected $socket = 'websocket://0.0.0.0:6550';
    protected $uidConnnections = array();
    public function __construct()
    {
        parent::__construct();
    }

    public function  onConnect($connection){
        $msg=['type'=>'conn','msg'=>'连接服务器成功'];

        $connection->send(json_encode($msg));
    }

    public function onMessage($connection,$data)
    {
        $arr = json_decode($data);

        //绑定用户
        if($arr->type == "bind" && !isset($connection->uid)){
            $connection->uid = $arr->uid;
            //保存uid到connection的映射，实现针对特定uid的推送
           $this->worker->uidConnections[$connection->uid]=$connection;

        }
        //聊天
        if($arr->type=="text"){
            if(isset($this->worker->uidConnections[$arr->to_user_id])){
                $conn= $this->worker->uidConnections[$arr->to_user_id];
                $conn->send($data);
            }else{
                //先返回给发送者错误信息
                $conn2= $this->worker->uidConnections[$arr->from_user_id];
                $msg=['type'=>'error','msg'=>'对方不在线'];
                $conn2->send(json_encode($msg));
            }

        }

    }
    public function onClose($connection){
        unset($this->worker->uidConnections[$connection->uid]);
    }

}