website/contact-email-worker/src/index.ts

import { EmailMessage } from "cloudflare:email";
import { WorkerEntrypoint } from "cloudflare:workers";
import { createMimeMessage } from "mimetext";

const formatEmptyString = (s: string) => s ?? "Not Specified";

interface EmailDetails {
  fullName: string;
  organisation: string;
  email: string;
  mobile: string;
  message: string;
}

export default class SendEmailWorker extends WorkerEntrypoint<Env> {
  async fetch() {
    return new Response("Unimplemented");
  }

  async sendEmail({
    fullName,
    organisation,
    email,
    mobile,
    message,
  }: EmailDetails) {
    const msg = createMimeMessage();
    msg.setSender({
      name: "Michael Pivato Contact Form",
      addr: "contact@michaelpivato.dev",
    });
    msg.setRecipient("contact@michaelpivato.dev");
    msg.setSubject(`Message from ${fullName ?? email}`);
    msg.addMessage({
      contentType: "text/plain",
      data: `You've received a new message from ${fullName ?? email}.
Full Name: ${formatEmptyString(fullName)}
Organisation: ${formatEmptyString(organisation)}
Email: ${formatEmptyString(email)}
Mobile: ${formatEmptyString(mobile)}

Message:
${message}`,
    });
    const cfMessage = new EmailMessage(
      "contact@michaelpivato.dev",
      "contact@michaelpivato.dev",
      msg.asRaw()
    );
    this.ctx.waitUntil(this.env.SEB.send(cfMessage));
  }
}