AWS Lambda for my "contact me" form on my personal site, iamandrew.io

contact-me-lambda.js

const aws = require('aws-sdk');
const ses = new aws.SES({ region: 'us-west-2' });

const MY_EMAIL = 'me@iamandrew.io';

exports.handler = async (event, context, callback) => {
    console.log('event: ', event);

    const response = {
        statusCode: 200,
        headers: {
            'Content-Type': 'application/json',
            'Access-Control-Allow-Origin': '*',
            'Access-Control-Allow-Methods': 'DELETE,GET,HEAD,OPTIONS,PATCH,POST,PUT',
            'Access-Control-Allow-Headers': 'Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token'
        },
        body: ''
    };
    
    switch(event.httpMethod) {

        case 'POST':

            const { name, email, subject, message } = JSON.parse(event.body);
            
            if(!name || !email || !subject || !message) {
                response.statusCode = 403;
                response.body = JSON.stringify({message: 'Bad request'});
                callback(null, response);
            }

            const params = {
                Destination: {
                    ToAddresses: [MY_EMAIL]
                },
                Message: {
                    Body: {
                        Text: {
                            Data: `New Message from ${name} @ ${email}\n\n-----------------------------\n\n${message}`
                        }
                    },
                    Subject: {
                        Data: subject
                    }
                },
                Source: MY_EMAIL
            };

            console.log('sending email to: ', JSON.stringify(params));

            ses.sendEmail(params, (err, data) => {
                if(err) {
                    console.log('Error: ', err);
                    const message = err.message || 'An unknown error has occured...';
                    
                    response.statusCode = 500;
                    response.body = JSON.stringify({message: message});
                    callback(null, response);
                }
                else {
                    console.log('email success: ', data);
                    response.body = JSON.stringify({message: 'Success'});
                    callback(null, response);
                }
            });
            
        case 'OPTIONS':
            callback(null, response);

        default:
            response.statusCode = 405;
            response.body = JSON.stringify({message: 'Not a supported method.'});
            callback(null, response);
    }
};