<?php

namespace app\api\controller;

use app\common\controller\Api;
use Redis;
use think\Db;

/**
 * 环信接口
 */
class Easemob extends Api
{
    protected $noNeedLogin = ["callback"];
    protected $noNeedRight = ['*'];

    protected $appKey;

    public function __construct() {

        //初始化配置
        $easemob_config               = config('easemob');
        $this->appKey                 = $easemob_config['appkey'];
    }

    /**
     * 回调
     * https://docs-im-beta.easemob.com/document/server-side/callback_configurations.html
     *
     * 群组和聊天室操作：
     * muc:kick 踢出聊天室
     * {"callId":"1101231101159883#demo_1215088856588617164","channel_channel":"1101231101159883#demo_9@easemob.com","eventType":"chat","channel_user":"1101231101159883#demo_231181574537218@admin.conference.easemob.com","chat_type":"muc","security":"83f9462c7769df1c979fd9dea88e7400","is_downgrade":false,"content_type":"muc:kick","payload":{"muc_id":"1101231101159883#demo_231181574537218@conference.easemob.com","reason":"chatroom kick offline user","is_chatroom":true,"operation":"kick","status":{"description":"","error_code":"ok"}},"group_id":"231181574537218","writed_channel":false,"host":"msync@ebs-ali-beijing-msync71","appkey":"1101231101159883#demo","from":"1101231101159883#demo_9@easemob.com","to":"9","msg_id":"1215088856588617164","timestamp":1700474720591}
     * muc:absence 有成员离开了聊天室
     * {"callId":"1101231101159883#demo_1215088856710252128","channel_channel":"1101231101159883#demo_231181574537218@admin.conference.easemob.com","eventType":"chat","channel_user":"admin@easemob.com","chat_type":"muc","security":"ec7d29ea415ea5930c2236089dff3bc2","is_downgrade":false,"content_type":"muc:absence","payload":{"muc_id":"1101231101159883#demo_231181574537218@conference.easemob.com","is_chatroom":true,"operation":"absence"},"group_id":"231181574537218","writed_channel":false,"host":"msync@ebs-ali-beijing-msync108","appkey":"1101231101159883#demo","from":"1101231101159883#demo_9@easemob.com","to":"231181574537218","msg_id":"1215088856710252128","timestamp":1700474720619}
     * muc:leave 成员主动退出聊天室
     *
     * 用户登出
     * {"callId":"1101231101159883#demo_ee82832b-3455-472d-9024-3706b1e519a7","reason":"logout","security":"6266f2a31bc3b603d8458f3d39a49d47","os":"android","ip":"182.37.138.94:39768","host":"msync@ebs-ali-beijing-msync60","session_id":"1215076057950983584","appkey":"1101231101159883#demo","user":"1101231101159883#demo_2@easemob.com/android_f9f51032-3369-4f02-95bb-0cbf41b26837","version":"4.1.2","timestamp":1700472505682,"status":"offline"}
     *
     * 用户登出（被其他设备踢掉）
     * {"callId":"1101231101159883#demo_b2cdc4d9-a499-4e46-8aff-4503fb83a5c5","reason":"replaced","security":"1f4bb2ebb99c2f5da20048c7ca87f352","os":"android","ip":"182.37.138.94:41044","host":"msync@ebs-ali-beijing-msync62","appkey":"1101231101159883#demo","user":"1101231101159883#demo_9@easemob.com/android_fb260fdf-3935-4499-a09d-b270fdd88a0e","version":"4.1.2","timestamp":1700473675582,"status":"offline"}
     */
    public function callback() {
        $this->notify_log_start();

        $input = file_get_contents("php://input"); // 主题信息
        $input = json_decode($input,true);

        //验证加密

        //解析数据格式

        //用户登出
        //用户登出（被其他设备踢掉）
        if(isset($input['reason']) && ( $input['reason'] == 'logout'  || $input['status'] == 'replaced')  && isset($input['status']) && $input['status'] == 'offline'){
            //登出
            $user = $input['user'];
            $uid = $this->get_easemob_uid($user);//用户主键id

            //开始处理
        }


        //
        if(isset($input['chat_type']) && $input['chat_type'] == 'muc' && isset($input['eventType']) && $input['eventType'] == 'chat' ){


            $room_id = '';
            $is_chatroom = false;
            $operation = false;
            $error_code = false;

            if(isset($input['payload'])){

                $payload = $input['payload'];

                if(isset($payload['muc_id'])){
                    $room_id = $this->get_easemob_uid($payload['muc_id']);
                }

                if(isset($payload['is_chatroom']) && $payload['is_chatroom'] == true){
                    $is_chatroom = true;
                }

                if(isset($payload['operation']) && in_array($payload['operation'],['kick','absence','leave']) ){
                    $operation = true;
                }

                if(isset($payload['status']['error_code']) && $payload['status']['error_code'] == 'ok'){
                    $error_code = true;
                }

            }

            //用户
            $uid = 0;
            if(isset($input['from'])){
                $uid = $this->get_easemob_uid($user);
            }

            if($uid && $room_id && $is_chatroom && $operation && $error_code){
                //开始处理
            }

        }


    }

    //输入: 1101231101159883#demo_9@easemob.com/android_f9f51032-3369-4f02-95bb-0cbf41b26837
    //输出: 9

    //输入: 1101231101159883#demo_231181574537218@admin.conference.easemob.com
    //输出: 231181574537218
    private function get_easemob_uid($user = ''){
        //去掉后半段
        $easemob = '@';
        $start = strpos($user,$easemob);
        $uid = substr($user,0,$start);
        //echo $uid;
        //echo '<br>';
        //去掉前缀
        $uid = substr($uid,strlen($this->appKey)+1);
        //echo $uid;

        return intval($uid);
    }


    //异步日志
    private function notify_log_start($paytype = 'easemob'){
        //记录支付回调数据
        ignore_user_abort(); // run script in background
        set_time_limit(30);
        // 日志文件 start
        $log_base_dir = '../paylog/'.$paytype.'/';
        if (!is_dir($log_base_dir))
        {
            mkdir($log_base_dir, 0770, true);
            @chmod($log_base_dir, 0770);
        }
        $notify_file = $log_base_dir.'notify.txt';
        if(!file_exists($notify_file)) {
            @touch($notify_file);
            @chmod($notify_file, 0770);
        }
        if(filesize($notify_file)>5242880)//大于5M自动切换
        {
            rename($notify_file, $log_base_dir.'notify_'.date('Y_m_d_H_i_s').'.txt');
        }
        if(!file_exists($notify_file)) {
            @touch($notify_file);
            @chmod($notify_file, 0770);
        }
        // 日志文件 end
        //开始写入

        $xml = file_get_contents("php://input");
        file_put_contents($notify_file, "\r\n\r\n".date('Y-m-d H:i:s')." [notify][入口接收php://input流原始数据] \n".$xml, FILE_APPEND);

        ini_set('display_errors','On');

        return $notify_file;

    }
}