<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: ywxapp<admin@ywxapp.cn>
// +----------------------------------------------------------------------

namespace ywxapp\library;

use think\facade\Event;
use ywxapp\library\Result;
use ywxapp\model\Email as EmailModel;
use ywxapp\model\MemberUser as UsersModel;

/**
 * 邮箱验证码类.
 */
class Email
{
    /**
     * 验证码有效时长
     * @var int
     */
    protected $expire = 120;

    /**
     * 最大允许检测的次数.
     * @var int
     */
    protected $maxCheckNums = 10;


    /**
     * 获取当前对象实例.
     *
     * @return EmailModel
     */
    public static function instance()
    {
        return app()->email;
    }


    /**
     * 发送验证码
     *
     * @param  int  $email  邮箱
     * @param  int  $code  验证码,为空时将自动生成4位数字
     * @param  string  $event  事件
     *
     * @return bool
     */
    public function sendEmail($emailAddr, $code = null, $event = 'default')
    {
        $lastEmail = EmailModel::where('email', $emailAddr)
            ->where('event', $event)
            ->order('id', 'DESC')
            ->find();
        Event::trigger('email_get', $lastEmail, true);

        if ($lastEmail && time() - $lastEmail['create_at'] < 60)
            Result::instance()->error(message: ('发送频繁'));

        if ($event) {
            $userinfo = UsersModel::where('email', $emailAddr)->find();
            if ($event == 'register' && $userinfo)
                Result::instance()->error(('已被注册'));
            elseif (in_array($event, ['changeemail']) && $userinfo)
                Result::instance()->error(('已被占用'));
            elseif (in_array($event, ['changepwd', 'resetpwd']) && !$userinfo)
                Result::instance()->error(('未注册'));
        }

        $code = is_null($code) ? mt_rand(100000, 999999) : $code;
        $time = time();
        $ip = request()->ip();
        $email = EmailModel::create([
            'event' => $event,
            'email' => $emailAddr,
            'code' => $code,
            'ip' => $ip,
            'create_at' => $time,
        ]);
        $result = Event::trigger('email_send', $email, true);
        if (!$result)
            Result::instance()->error(message: ('发送失败'));
        Result::instance()->success(message: ('发送成功'));
    }

    /**
     * 发送通知.
     *
     * @param  mixed  $email  邮箱,多个以,分隔
     * @param  string  $msg  消息内容
     * @param  string  $template  消息模板
     *
     * @return bool
     */
    public function notice($email, $msg = '', $template = null)
    {
        $params = [
            'email' => $email,
            'msg' => $msg,
            'template' => $template,
        ];
        $result = Event::trigger('email_notice', $params, true);
        return $result ? true : false;
    }

    /**
     * 校验验证码
     *
     * @param  int  $email  邮箱
     * @param  int  $code  验证码
     * @param  string  $event  事件
     *
     * @return bool
     */
    public function check($emailAddr, $code, $event = 'default')
    {
        $lastEmail = EmailModel::where('email', $emailAddr)
            ->where('event', $event)
            ->order('id', 'DESC')
            ->find();
        if (!$lastEmail || $code != $lastEmail['code'])
            Result::instance()->error(message: ('验证码不正确'));
        if ($lastEmail['create_at'] > time() - $this->expire)
            Result::instance()->error(message: ('验证码已经过期'));

        if ($code != $lastEmail['code'])
            Result::instance()->error(message: ('验证码不正确'));

        $result = Event::trigger('ems_check', $lastEmail, true);

        $lastEmail->status = 1;
        $lastEmail->save();
        return $result;
    }

    /**
     * 清空指定邮箱验证码
     *
     * @param  int  $email  邮箱
     * @param  string  $event  事件
     *
     * @return bool
     */
    public static function flush($email, $event = 'default')
    {
        EmailModel::where(['email' => $email, 'event' => $event])->delete();
        Event::trigger('email_flush');
        return true;
    }


}