import * as plugins from './smartsmtp.plugins.js';

export interface ISmartSmtpOptions {
  smtpServer: string;
  smtpUser: string;
  smtpPassword: string;
}

/**
 * Use it to send mails via smtp
 */
export class Smartsmtp {
  public static async createSmartsmtpWithRelay(optionsArg: ISmartSmtpOptions) {
    const nodemailerTransport = plugins.nodemailer.createTransport({
      host: optionsArg.smtpServer,
      port: 465,
      secure: true, // upgrade later with STARTTLS
      auth: {
        user: optionsArg.smtpUser,
        pass: optionsArg.smtpPassword,
      },
    });
    return new Smartsmtp(nodemailerTransport);
  }

  public static async createSmartsmtpSendmail() {
    const nodemailerTransport = plugins.nodemailer.createTransport({
      sendmail: true,
      newline: 'unix'
    });
    return new Smartsmtp(nodemailerTransport);
  }

  public nodemailerTransport: plugins.nodemailer.Transporter;
  constructor(transporterArg: plugins.nodemailer.Transporter) {
    this.nodemailerTransport = transporterArg;
  }

  /**
   * sends a SmartMail
   */
  public async sendSmartMail(
    smartmailArg: plugins.smartmail.Smartmail<any>,
    toArg: string,
    dataArg = {}
  ) {
    const message: plugins.nodemailer.SendMailOptions = {
      from: smartmailArg.options.from,
      to: toArg,
      subject: smartmailArg.getSubject(dataArg),
      text: smartmailArg.getBody(dataArg),
      html: smartmailArg.getBody(dataArg),
      attachments: [],
    };

    // lets add attachments from smartmailArg
    for (const attachment of smartmailArg.attachments) {
      message.attachments.push({
        filename: attachment.parsedPath.base,
        content: attachment.contentBuffer,
      });
    }

    const response = await this.nodemailerTransport.sendMail(message).catch(err => {
      console.log(err);
    });
    return response;
  }
}