cal.pub0.org/lib/emails/EventAttendeeMail.ts

import dayjs, { Dayjs } from "dayjs";
import EventMail from "./EventMail";

import utc from "dayjs/plugin/utc";
import timezone from "dayjs/plugin/timezone";
import localizedFormat from "dayjs/plugin/localizedFormat";

dayjs.extend(utc);
dayjs.extend(timezone);
dayjs.extend(localizedFormat);

export default class EventAttendeeMail extends EventMail {
  /**
   * Returns the email text as HTML representation.
   *
   * @protected
   */
  protected getHtmlRepresentation(): string {
    return (
      `
    <div>
      Hi ${this.calEvent.attendees[0].name},<br />
      <br />
      Your ${this.calEvent.type} with ${this.calEvent.organizer.name} at ${this.getInviteeStart().format(
        "h:mma"
      )}
      (${this.calEvent.attendees[0].timeZone}) on ${this.getInviteeStart().format(
        "dddd, LL"
      )} is scheduled.<br />
      <br />` +
      this.getAdditionalBody() +
      "<br />" +
      `<strong>Additional notes:</strong><br />
      ${this.calEvent.description}<br />
      ` +
      this.getAdditionalFooter() +
      `
    </div>
  `
    );
  }

  /**
   * Adds the video call information to the mail body.
   *
   * @protected
   */
  protected getLocation(): string {
    if (this.additionInformation?.hangoutLink) {
      return `<strong>Location:</strong> <a href="${this.additionInformation?.hangoutLink}">${this.additionInformation?.hangoutLink}</a><br />`;
    }

    if (this.additionInformation?.entryPoints && this.additionInformation?.entryPoints.length > 0) {
      const locations = this.additionInformation?.entryPoints
        .map((entryPoint) => {
          return `
          Join by ${entryPoint.entryPointType}: <br />
          <a href="${entryPoint.uri}">${entryPoint.label}</a> <br />
        `;
        })
        .join("<br />");

      return `<strong>Locations:</strong><br /> ${locations}`;
    }

    return this.calEvent.location ? `<strong>Location:</strong> ${this.calEvent.location}<br /><br />` : "";
  }

  protected getAdditionalBody(): string {
    return `
      ${this.getLocation()}
    `;
  }

  /**
   * Returns the payload object for the nodemailer.
   *
   * @protected
   */
  protected getNodeMailerPayload(): Record<string, unknown> {
    return {
      to: `${this.calEvent.attendees[0].name} <${this.calEvent.attendees[0].email}>`,
      from: `${this.calEvent.organizer.name} <${this.getMailerOptions().from}>`,
      replyTo: this.calEvent.organizer.email,
      subject: `Confirmed: ${this.calEvent.type} with ${
        this.calEvent.organizer.name
      } on ${this.getInviteeStart().format("dddd, LL")}`,
      html: this.getHtmlRepresentation(),
      text: this.getPlainTextRepresentation(),
    };
  }

  protected printNodeMailerError(error: string): void {
    console.error("SEND_BOOKING_CONFIRMATION_ERROR", this.calEvent.attendees[0].email, error);
  }

  /**
   * Returns the inviteeStart value used at multiple points.
   *
   * @private
   */
  protected getInviteeStart(): Dayjs {
    return <Dayjs>dayjs(this.calEvent.startTime).tz(this.calEvent.attendees[0].timeZone);
  }
}