<?php
namespace server\components;

use server\lib\Gateway;
use server\components\Utility;

class Base {

    public static $_redis;
    public static $_db;
    protected static $pushNum = 0;

    /**
     * 初始化数据.
     */
    public function __construct(){
        self::$_redis = Redis::instance();
        self::$_db = Db::instance();
    }

    /**
     * 发送消息.
     *
     * @param int $code
     * @param string $errorMsg
     * @param array $data
     */
    public static function sendMessage($code = 200, $errorMsg = 'ok', $data = []){
        
        if(!empty($data)){
            foreach($data as $item){
                // $item['data']['server_msg_id'] = !isset($item['data']['server_msg_id']) ? Utility::makeUuid() : $item['data']['server_msg_id'];
                // $item['data']['server_msg_id'] ?? Utility::makeUuid();
                $result = [
                    'code'=>$code,
                    'msg'=>$errorMsg,
                    'message_type'=>$item['msg_type'],
                    'data'=>$item['data'],
                ];
                $logData = $result;
                $logData['time'] = date('Y-m-d H:i:s');
                self::writeLog($logData);
                $sendMessage = json_encode($result,JSON_UNESCAPED_UNICODE);
                if(!empty($item['is_resend'])){
                    self::resend($item['data']['msg_id'], $item['target'], $sendMessage);
                }
                switch($item['type']){
                    case 'single':
                        Gateway::sendToClient($item['target'], $sendMessage);
                        break;
                    case 'all':
                        Gateway::sendToAll($sendMessage);
                        break;
                    case 'group':
                        Gateway::sendToGroup($item['target'], $sendMessage);
                        break;
                }
            }
        }elseif($code != 200){
           
        }

    }

    /**
     * base64转图片
     */
    public function base64ToImg($base64){
        preg_match('/^(data:\s*image\/(\w+);base64,)/',$base64,$res);

        if(empty($res)){
            $imgType = "jpg";
        }else{
            $imgType = $res[2];
            $base64 = str_replace($res[1],'',$base64);
        }

        $imgname = md5(uniqid(rand())) .'.'. $imgType;
        $date_m = date('Y-m');
        $date_d = date('Y-m-d');
        $dir_m = __DIR__ . "/../../public/uploads/chatimg/user/$date_m/";             //月
        $dir_d = __DIR__ . "/../../public/uploads/chatimg/user/$date_m/$date_d/";     //以当前日期为文件夹名创建文件夹
        if(!file_exists(__DIR__ . "/../../public/uploads/chatimg/user/")){
            mkdir(__DIR__ . "/../../public/uploads/chatimg/user/",0755,true);
        }
        if(!file_exists($dir_m)){
            mkdir($dir_m);
        }
        if(!file_exists($dir_d)){
            mkdir($dir_d);
        }
        $path=$dir_d.$imgname;

        file_put_contents($path, base64_decode($base64)); // 将图片保存到相应位置
        global $configFile;
        $url = $configFile['site_url']."/uploads/chatimg/user/$date_m/$date_d/".$imgname;
        return $url;
    }

    public function writeLog($data){
        $date_m = date('Y-m');
        $date_d = date('Y-m-d');
        global $configFile;
        $dir_m = $configFile['chat_msg_dir'].$date_m;

        if(!file_exists($dir_m)){
            mkdir($dir_m,0755,true);
        }

        file_put_contents(
            $dir_m.'/'.$date_d.'.log',
            json_encode($data,JSON_UNESCAPED_UNICODE)."\n",
            FILE_APPEND
        );
    }

    /**
     * emoji表情过滤
     */
    public function filterEmoji($str)
    {
        $str = preg_replace_callback(
                '/./u',
                function (array $match) {
                    return strlen($match[0]) >= 4 ? '' : $match[0];
                },
                $str);
     
         return $str;
     }

     /**
      * 获取表名
      */
      public function getTableName($table, $uid)
      {
            global $configFile;
            return $table.'_'.($uid % $configFile['chat_table_num']);
      }

      /**
       * 超时重发
       */
      private function resend($msgId, $clientId, $sendMessage){
        swoole_timer_tick(3000, function ($timerId)use($msgId,$clientId,$sendMessage){
            self::$pushNum ++;
            if(self::$pushNum >= 3 || !self::$_redis->get($msgId)){
                self::$pushNum = 0;
                swoole_timer_clear($timerId);
                return false;
            }
            echo date('Y-m-d H:i:s')." 重发".$msgId.'---'.self::$pushNum."\n";
            Gateway::sendToClient($clientId, $sendMessage);
        });
      }

}