<?php
/**
 * Created by PhpStorm.
 * User: chendeben
 * Date: 2018/8/10
 * Time: 上午11:22
 */

namespace Heanup\Library;

use Heanup\App\Api\Config\GlobalConfig;
use Heanup\Frame\Logger;
use PHPMailer\PHPMailer\Exception;
use PHPMailer\PHPMailer\PHPMailer;

class Email
{
    private static $instance;
    private $mail;

    public function __construct()
    {
        $config = GlobalConfig::getData();
        $this->mail = new PHPMailer();
        $this->mail->CharSet = 'UTF-8';
        $this->mail->isSMTP();                                        // Set mailer to use SMTP
        $this->mail->Host = $config['host'];                          // Specify main and backup SMTP servers
        $this->mail->SMTPAuth = $config['auth'];                      // Enable SMTP authentication
        $this->mail->Username = $config['user'];                      // SMTP username
        $this->mail->Password = $config['pwd'];                       // SMTP password
        $this->mail->SMTPSecure = $config['secure'];                  // Enable TLS encryption, `ssl` also accepted
        $this->mail->Port = $config['port'];                          // TCP port to connect to
        try {
            $this->mail->setFrom($config['user'], $config['from']);
        } catch (Exception $e) {
        }
        $this->mail->addCustomHeader('X-Priority', '1\r\n');
    }

    public static function instance()
    {
        if (!self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }


    /**
     * @param array $receipt 收件人地址
     * @param string $subject 邮件标题
     * @param string $body 邮件内容
     * @param array $attachment 附件
     * @param bool $is_html 是否HTML格式
     * @return bool
     * @throws Exception
     */
    public function sendMail(array $receipt, string $subject, string $body, array $attachment = array(), bool $is_html = true)
    {
        foreach ($receipt as $list) {
            $this->mail->addAddress($list);
        }
        try {
            if ($attachment) {
                $this->mail->addAttachment($attachment['path'], $attachment['name']);
            }
        } catch (Exception $e) {
        }
        $this->mail->isHTML($is_html);
        $this->mail->Subject = $subject;
        $this->mail->Body = $body;
        try {
            if (!$this->mail->send()) {
                Logger::error($this->mail->ErrorInfo, 'mail_err');
                return false;
            }
        } catch (Exception $e) {
            Logger::error($this->mail->ErrorInfo, 'mail_err');
        }
        return true;
    }
}