<?php

namespace extend\chat\model;

use ba\Random;
use EasyWeChat\Factory;
use support\Redis;

class Business
{
    // 存消息 未读消息保存30天 30天以后自动删除
    public static function setRedisMessage($uid, $user_type, $data, $open_id = '')
    {
        $str_uid = Base::getUid($uid, $user_type);
        $rand_msg_str = $str_uid . Random::build();
        $set_str = 'nomsg:message:' . $str_uid;
        $set_info_str = 'nomsg:message:' . $rand_msg_str;
        $sent = Redis::get($set_str);
        if($sent) {
            $sent = json_decode($sent, true);
            $sent[count($sent)] = $set_info_str;
            Redis::setEx($set_str, 30 * 86400, json_encode($sent));
        }else {
            Redis::setEx($set_str, 30 * 86400, json_encode([$set_info_str]));
        }
        Redis::setEx($set_info_str, 30 * 86400, json_encode($data));
    }

    // 拉消息
    public static function getRedisMessage($uid, $user_type)
    {
        $str_uid = Base::getUid($uid, $user_type);
        $set_str = 'nomsg:message:' . $str_uid;
        $sent = Redis::get($set_str);
        $data = [];
        if($sent) {
            $sent = json_decode($sent, true);
            foreach ($sent as $k => $v) {
                $msg = Redis::get($v);
                if($msg) {
                    $data[] = json_decode(Redis::get($v), true);
                }
                Redis::del($v);
            }
            Redis::del($set_str);
        }
        return $data;
    }
}