<?php
/**
 * Created by PhpStorm.
 * User: MADAO
 * Date: 2018/3/16
 * Time: 19:18
 */

namespace App\Libs;

use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Redis;
use Overtrue\EasySms\EasySms as Sms;
use Overtrue\EasySms\Exceptions\NoGatewayAvailableException;


class EasySms extends Sms
{

    public function __construct(array $config = [])
    {
        $init = config('sms.init');
        $config = array_merge($init, $config);
        parent::__construct($config);
    }


    public function send($to, $message = [], array $gateways = [])
    {

        if (!is_mobile($to)) {
            return response()->json(['message' => '手机号格式错误'], 400);
        }

        $cacheData = EasySms::getSmsCodeCache($to);

        if ($cacheData) {
            if (time() - $cacheData['send_time'] <= config('sms.sendTimeout') ?? 60) {
                return response()->json(['message' => '短信消息发送不能太过频繁'], 400);
            }
        }
        $smsCode = $this->createSmsCode();

        $default = [
            'content' => '您好！您的验证码为${code},请在15分钟内填写。',
            'template' => 'SMS_162110318',
            'data' => [
                'code' => $smsCode
            ],
        ];

        $message = array_merge($default, $message);

        try {
            parent::send($to, $message, $gateways);
            $this->setSmsCodeCache($to, $smsCode); //缓存至redis
            return response()->json(['message' => '发送成功']);
        } catch (NoGatewayAvailableException $exception) {
            Log::error(var_export($exception->getResults(), 1));
            return response()->json(['message' => '网关发送失败'], 400);
        } catch (\Throwable $throwable) {
            Log::error(var_export($throwable->getMessage(), 1));
            return response()->json(['message' => '短信发送失败'], 400);
        }
    }


    /**
     * 设置短信验证码缓存
     * @author hjc
     * @param $mobile
     * @param $smsCode
     */
    private function setSmsCodeCache($mobile, $smsCode)
    {
        $cacheKey = 'hash_sms_' . strtolower(config('name')) . '_' . $mobile;
        $cacheData = [
            'mobile' => $mobile,
            'code' => $smsCode,
            'send_time' => time()
        ];
        Redis::hmset($cacheKey, $cacheData);
        Redis::expire($cacheKey, config('sms.redisExpire') ?? 600);
    }

    /**
     * 获得短信验证码
     * @author hjc
     * @param $mobile
     * @return mixed
     */
    public static function getSmsCodeCache($mobile)
    {
        $cacheKey = 'hash_sms_' . strtolower(config('name')) . '_' . $mobile;
        $cacheData = Redis::hgetall($cacheKey);
        return $cacheData;
    }

    /**
     * 随机生成的code码
     * @author hjc
     * @return string
     */
    private function createSmsCode()
    {
        $num = config('sms.codeSize') ?? 4; //生成的随机数个数
        $isIncludeStr = config('sms.codeIsIncludeStr') ?? false; //是否包含字符串

        $value = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
        if ($isIncludeStr) {
            $strVal = [
                'a', 'b', 'c', 'd', 'e', 'f', 'g',
                'h', 'i', 'j', 'k', 'l', 'm', 'n',
                'o', 'p', 'q', 'r', 's', 't', 'u',
                'v', 'w', 'x', 'y', 'z'
            ];
            $value = array_merge($value, $strVal);
        }
        shuffle($value);    //排序打乱
        $key = array_rand($value, $num);
        $string = '';
        foreach ($key as $v) {
            $string .= $value[$v];
        }
        return $string;
    }
}