mail-template-sender/src/MailSender.js

Email - Template - Sender: Renders templates and sends email

const { MailSendError } = require("../core/exceptions");
const EventEmitter = require("events");

class MailSender extends EventEmitter {
  templatePaths = {};

  setUpEventListerners(options = {}) {
    this.on("send", async (mail) => {
      try {
        const mailTemplatePath = this.templatePaths[mail.template];
        mail._addTemplatePath(mailTemplatePath);
        options.provider.addMail(mail);
        options.provider.addMailBody(await mail.render());
        const result = await options.provider.send();
        this.emit("sent", mail, result);
      } catch (error) {
        this.emit("error", error, mail);
      }
    });

    this.on("error", (error) => {
      throw new MailSendError(error);
    });
  }

  send(mail) {
    if (mail._name !== "Mail") {
      throw new MailSendError("invalid mail parameter");
    }
    this.emit("send", mail);
  }
}

module.exports = MailSender;