var helper = require('sendgrid').mail;
var fromEmail = new helper.Email('[email protected]');
var toEmail = new helper.Email('[email protected]');
var subject = 'Sending with SendGrid is Fun';
var content = new helper.Content('text/plain', 'and easy to do anywhere, even with Node.js');
var mail = new helper.Mail(fromEmail, subject, toEmail, content);

var sg = require('sendgrid')(process.env.SENDGRID_API_KEY);
var request = sg.emptyRequest({
  method: 'POST',
  path: '/v3/mail/send',
  body: mail.toJSON()
});

sg.API(request, function (error, response) {
  if (error) {
    console.log('Error response received');
  }
  console.log(response.statusCode);
  console.log(response.body);
  console.log(response.headers);
});

var sg = require('sendgrid')(process.env.SENDGRID_API_KEY);
var request = sg.emptyRequest({
  method: 'POST',
  path: '/v3/mail/send',
  body: {
    personalizations: [
      {
        to: [
          {
            email: '[email protected]'
          }
        ],
        subject: 'Sending with SendGrid is Fun'
      }
    ],
    from: {
      email: '[email protected]'
    },
    content: [
      {
        type: 'text/plain',
        value: 'and easy to do anywhere, even with Node.js'
      }
    ]
  }
});

// With promise
sg.API(request)
  .then(function (response) {
    console.log(response.statusCode);
    console.log(response.body);
    console.log(response.headers);
  })
  .catch(function (error) {
    // error is an instance of SendGridError
    // The full response is attached to error.response
    console.log(error.response.statusCode);
  });

// With callback
sg.API(request, function (error, response) {
  if (error) {
    console.log('Error response received');
  }
  console.log(response.statusCode);
  console.log(response.body);
  console.log(response.headers);
});

var sg = require('sendgrid')(process.env.SENDGRID_API_KEY);

// GET Collection
var request = sg.emptyRequest({
  method: 'GET',
  path: '/v3/api_keys'
});

// With promise
sg.API(request)
  .then(function (response) {
    console.log(response.statusCode);
    console.log(response.body);
    console.log(response.headers);
  })
  .catch(function (error) {
    // error is an instance of SendGridError
    // The full response is attached to error.response
    console.log(error.response.statusCode);
  });

// With callback
sg.API(request, function (error, response) {
  if (error) {
    console.log('Error response received');
  }
  console.log(response.statusCode);
  console.log(response.body);
  console.log(response.headers);
});