<?php

namespace app\admin\service;

use app\common\library\Redis;
use think\Log;
use think\exception\HttpException;


class RedisService
{
    const REDIS_KEY_SHORT_URL = 'SU:';

    public function __construct()
    {
    }

    /**
     * 获取客服消息自增id
     * @return int
     */
    public function getAutoCustomId()
    {
        $redisAuto = Redis::instanceAuto();
        $newCustomId = $redisAuto->incr('ACID');
        if (!$newCustomId) {
            $strErr = '客服消息自增ID获取失败！';
            Log::error($strErr);
            throw new HttpException(500, $strErr);
        }
        return $newCustomId;
    }

    /**
     * 获取模板消息自增id
     * @return int
     */
    public function getTemplateMessageId()
    {
        $redisAuto = Redis::instanceAuto();
        $newTemplateMessageId = $redisAuto->incr('TMID');
        if (!$newTemplateMessageId) {
            $strErr = '模板消息自增ID获取失败';
            Log::error($strErr);
            throw new HttpException(500, $strErr);
        }
        return $newTemplateMessageId;
    }

    /**
     * 获取推广链接自增id
     * @return int
     */
    public function getAutoReferralId()
    {
        $redisAuto = Redis::instanceAuto();
        $newReferralId = $redisAuto->incr('RFID');
        if (!$newReferralId) {
            $strErr = '推广链接自增ID获取失败！';
            Log::error($strErr);
            throw new HttpException(500, $strErr);
        }
        return $newReferralId;
    }

    /**
     * 获取短链接自增id
     * @return int
     */
    public function getAutoShortUrlId()
    {
        $redisAuto = Redis::instanceAuto();
        $newShortUrlId = $redisAuto->incr('SUID');
        if (!$newShortUrlId) {
            $strErr = '短链接自增ID获取失败！';
            Log::error($strErr);
            throw new HttpException(500, $strErr);
        }
        return $newShortUrlId;
    }

    #region 短链接

    /**
     * 获取短链接redis-key
     * @param $id
     * @return string
     */
    private function _getShortUrlKey($id)
    {
        return self::REDIS_KEY_SHORT_URL . $id;
    }

    /**
     * 从redis获取短链接
     * @param $id
     * @return bool|string
     */
    public function getShortUrl($id)
    {
        $redis = Redis::instance();
        $key = $this->_getShortUrlKey($id);
        return $redis->get($key);
    }

    /**
     * 设置redis短链接
     * @param $id
     * @param $url
     * @return bool
     * @throws \Exception
     */
    public function setShortUrl($id, $url)
    {
        $redis = Redis::instance();
        $key = $this->_getShortUrlKey($id);
        $result = $redis->set($key, $url, 3600);
        if (!$result) {
            throw new \Exception('设置短连接redis失败');
        }
        return $result;
    }
    #endregion
}