calendar/packages/features/ee/workflows/lib/reminders/providers/twilioProvider.ts

import TwilioClient from "twilio";

declare global {
  // eslint-disable-next-line no-var
  var twilio: TwilioClient.Twilio | undefined;
}

export const twilio =
  globalThis.twilio ||
  (process.env.TWILIO_SID && process.env.TWILIO_TOKEN && process.env.TWILIO_MESSAGING_SID)
    ? TwilioClient(process.env.TWILIO_SID, process.env.TWILIO_TOKEN)
    : undefined;

if (process.env.NODE_ENV !== "production") {
  globalThis.twilio = twilio;
}

function assertTwilio(twilio: TwilioClient.Twilio | undefined): asserts twilio is TwilioClient.Twilio {
  if (!twilio) throw new Error("Twilio credentials are missing from the .env file");
}

function getDefaultSender(whatsapp = false) {
  let defaultSender = process.env.TWILIO_PHONE_NUMBER;
  if (whatsapp) {
    defaultSender = `whatsapp:+${process.env.TWILIO_WHATSAPP_PHONE_NUMBER}`;
  }
  return defaultSender;
}

function getSMSNumber(phone: string, whatsapp = false) {
  return whatsapp ? `whatsapp:${phone}` : phone;
}

export const sendSMS = async (phoneNumber: string, body: string, sender: string, whatsapp = false) => {
  assertTwilio(twilio);
  const response = await twilio.messages.create({
    body: body,
    messagingServiceSid: process.env.TWILIO_MESSAGING_SID,
    to: getSMSNumber(phoneNumber, whatsapp),
    from: whatsapp ? getDefaultSender(whatsapp) : sender ? sender : getDefaultSender(),
  });

  return response;
};

export const scheduleSMS = async (
  phoneNumber: string,
  body: string,
  scheduledDate: Date,
  sender: string,
  whatsapp = false
) => {
  assertTwilio(twilio);
  const response = await twilio.messages.create({
    body: body,
    messagingServiceSid: process.env.TWILIO_MESSAGING_SID,
    to: getSMSNumber(phoneNumber, whatsapp),
    scheduleType: "fixed",
    sendAt: scheduledDate,
    from: whatsapp ? getDefaultSender(whatsapp) : sender ? sender : getDefaultSender(),
  });

  return response;
};

export const cancelSMS = async (referenceId: string) => {
  assertTwilio(twilio);
  await twilio.messages(referenceId).update({ status: "canceled" });
};

export const sendVerificationCode = async (phoneNumber: string) => {
  assertTwilio(twilio);
  if (process.env.TWILIO_VERIFY_SID) {
    await twilio.verify
      .services(process.env.TWILIO_VERIFY_SID)
      .verifications.create({ to: phoneNumber, channel: "sms" });
  }
};

export const verifyNumber = async (phoneNumber: string, code: string) => {
  assertTwilio(twilio);
  if (process.env.TWILIO_VERIFY_SID) {
    try {
      const verification_check = await twilio.verify.v2
        .services(process.env.TWILIO_VERIFY_SID)
        .verificationChecks.create({ to: phoneNumber, code: code });
      return verification_check.status;
    } catch (e) {
      return "failed";
    }
  }
};