sendMail

handler.js

// Copyright (c) 2018 AndreaSonny <[email protected]> (https://github.com/andreasonny83)
//
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT

'use strict';

const AWS = require('aws-sdk');
const ses = new AWS.SES();

require('dotenv').config();

const from = process.env.FROM;
const to = process.env.TO;
const subject = process.env.SUBJECT;
const debug = process.env.DEBUG === 'true';

class EmailSenderError extends Error {
  constructor(...params) {
    super(...params);
    this.name = 'EmailSenderError';
    Error.captureStackTrace(this, EmailSenderError);
  }
}

function generateError(err, statusCode) {
  const error = new EmailSenderError(err);

  return {
    statusCode,
    headers: {
      'Content-Type': 'application/json',
      'Access-Control-Allow-Origin': '*',
      'Access-Control-Allow-Credentials': true,
    },
    body: JSON.stringify({
      name: error.name,
      message: error.message,
    }),
  };
}

const prepareEmail = (subject, from, to) => ({
  Destination: {
    ToAddresses: [to],
  },
  Message: {
    Subject: {
      Data: subject,
      Charset: 'UTF-8',
    },
    Body: {
      Text: {
        Data: 'this is a test email',
        Charset: 'UTF-8',
      },
    },
  },
  Source: from,
});

module.exports.send = async (event, context) => {
  const params = prepareEmail(subject, from, to);
  let data = event.body;
  let sendEmail;

  try {
    data = JSON.parse(data);
  } catch (err) {
    return generateError(err, 500);
  }

  if (debug) {
    console.log('event received');
    console.log(JSON.parse(data));
  }

  try {
    sendEmail = await ses.sendEmail(params).promise();
  } catch (err) {
    return generateError(err, 500);
  }

  return {
    statusCode: 200,
    headers: { 'Access-Control-Allow-Origin': '*' },
    body: JSON.stringify({
      status: 'success',
    }),
  };
};