<?php

namespace App\Service;

use Illuminate\Support\Facades\Cache;

class CodeService extends Service
{
    const CACHE_LOGIN = "LoginCode";//登录验证码前缀
    const CACHE_CONFIRM = "ConfirmCode";//确认验证码前缀

    //生成验证码
    public function createCode(){
        $length = 6;
        $characters = '0123456789';
        $code = '';

        $characterLength = strlen($characters);
        for ($i = 0; $i < $length; $i++) {
            $randomIndex = mt_rand(0, $characterLength - 1);
            $code .= $characters[$randomIndex];
        }

        return $code;
    }

    //登录验证码
    public function sendLoginCode($data){
        if(empty($data['account'])) return [false,'请先输入账号！'];

        //键名
        $cacheKey = self::CACHE_LOGIN . $data['account'];

        //限制发送验证码
        if(Cache::has($cacheKey)) return [false,'已发送验证码，请勿重复发送！'];

        //获取验证码
        $code = $this->createCode();

        //发送验证码到手机 TODO
        list($status,$msg) = $this->sendCode($code);
        if(! $status) return [false,'发送验证码失败！'];

        //成功后 缓存code 60s
        Cache::add($cacheKey,$code,60);

        return [true,''];
    }

    //确认验证码
    public function sendConfirmCode($data){
        if(empty($data['id'])) return [false,'ID不能为空！'];

        //键名
        $cacheKey = self::CACHE_CONFIRM . $data['id'];

        //限制发送验证码
        if(Cache::has($cacheKey)) return [false,'已发送验证码，请勿重复发送！'];

        //获取验证码
        $code = $this->createCode();

        //发送验证码到手机 TODO
        list($status,$msg) = $this->sendCode($code);
        if(! $status) return [false,'发送验证码失败！'];

        //成功后 缓存code 60s
        Cache::add($cacheKey,$code,60);

        return [true,''];
    }

    //发送验证码  TODO
    public function sendCode($code){
        return [true,''];
    }

    //验证登录验证码
    public function loginCodeRule($data){
        if(empty($data['account'])) return [false,'账号不能为空！'];
        if(empty($data['code'])) return [false,'验证码不能为空！'];

        $cacheKey = self::CACHE_LOGIN . $data['account'];
        if(Cache::has($cacheKey)){
            $code = Cache::get($cacheKey);
            if($code != $data['code']) return [false,'验证码填写错误！'];
            return [true, ''];
        }

        return [false, '验证码不正确！'];
    }

    //验证确认验证码
    public function ConfirmCodeRule($data){
        if(empty($data['code'])) return [false,'验证码不能为空！'];

        $cacheKey = self::CACHE_CONFIRM . $data['id'];
        if(Cache::has($cacheKey)){
            $code = Cache::get($cacheKey);
            if($code != $data['code']) return [false,'验证码填写错误！'];
            return [true, ''];
        }

        return [false,'验证码不存在！'];
    }


    //------------------暂时用不到下面------------------------//
    public function sendCodeToWx($data,$token){
        $cacheKey = "code_" . $token;
        if(! $this->isSubmitlimitation($cacheKey)) return [false,'已发送验证码，请勿重复操作！'];

        //生成验证码
        $code = $this->createCode();

        //发送验证码
        list($status,$msg) = $this->sendCode($code);

        if($status){
            Cache::add($cacheKey,$code,1);
            return [true,''];
        }else{
            return [false,$msg];
        }
    }

    //微信公众号发送
//    public function sendCode($code){
//        $serivce = new WxService();
//        list($status,$msg) = $serivce->getToken();
//        if(! $status) return [false,$msg];
//
//        list($status,$msg) = $serivce->sendToWx($msg,$code);
//        return [$status,$msg];
//    }

    public function isSubmitlimitation($cacheKey){
        if(Cache::has($cacheKey)){
            return false;
        }
        return true;
    }
}