import nodemailer from "nodemailer";
import path from "path";

class EmailSender {
  constructor(config) {
    this.transporter = nodemailer.createTransport(config);
    this.defaultFrom = config.auth.user;
  }
  async sendEmail(options) {
    try {
      const mailOptions = {
        from: options.from || this.defaultFrom,
        to: options.to,
        cc: options.cc,
        bcc: options.bcc,
        subject: options.subject,
        text: options.text,
        html: options.html,
        attachments: options.attachments || [],
      };

      const info = await this.transporter.sendMail(mailOptions);
      console.log(`邮件发送成功: ${options.to} - ${info.messageId}`);
      return { success: true, messageId: info.messageId };
    } catch (error) {
      console.error(`邮件发送失败: ${options.to} -`, error.message);
      throw error;
    }
  }
  async sendBasicEmail(to, subject, content) {
    return await this.sendEmail({ to, subject, html: content });
  }

  async sendEmailWithAttachments(to, subject, content, attachmentPath) {
    const attachments = [];
    if (attachmentPath) {
      attachments.push({
        filename: path.basename(attachmentPath),
        path: attachmentPath,
      });
    }
    return await this.sendEmail({ to, subject, html: content, attachments });
  }

  async sendBulkEmail(recipients, subject, content) {
    const results = [];
    for (const recipient of recipients) {
      try {
        const result = await this.sendEmail({
          to: recipient,
          subject,
          html: content,
        });
        results.push({ recipient, success: true, result });
      } catch (error) {
        results.push({ recipient, success: false, error: error.message });
      }
      await new Promise((resolve) => setTimeout(resolve, 1000));
    }
    return results;
  }

  async testConnection() {
    try {
      await this.transporter.verify();
      console.log("邮件服务器连接成功");
      return true;
    } catch (error) {
      console.error("邮件服务器连接失败:", error);
      return false;
    }
  }
}

// async function example() {
//   let emailSender = new EmailSender({
//     host: "smtp.exmail.qq.com",
//     port: 465,
//     secure: true,
//     auth: {
//       user: "jiqiren@axbbaoxian.com",
//       pass: "Am13579q",
//     },
//   });
//   const isConnected = await emailSender.testConnection();
//   if (!isConnected) {
//     console.log("邮件服务器连接失败");
//     return;
//   }
//   emailSender.sendBasicEmail(
//     "cpw@axbbaoxian.com",
//     "测试邮件",
//     "这是测试邮件内容"
//   );
// }

// example().catch((err) => {
//   console.error("程序错误:", err);
// });
export { EmailSender };