Initialize the DFP Instance.

var Dfp = require('node-google-dfp'),
    dfpUser = new Dfp.User(NETWORK_CODE, APP_NAME, VERSION);

Next, setup your client settings and your user's OAUTH token information.

dfpUser.setSettings({
  client_id : "YOUR CLIENT ID",
  client_secret : "YOUR CLIENT SECRET",
  refresh_token : "A REFRESH TOKEN",
  redirect_url : "YOUR OAUTH REDIRECT URL"
});

You can instance any of DFP's API Services; https://developers.google.com/doubleclick-publishers/docs/start

dfpUser.getService('LineItemService', function (err, lineItemService) {
  if (err) {
    return console.error(err);
  }

  var statement = new DfpClass.Statement('WHERE id = 103207340');

  lineItemService.getLineItemsByStatement(statement, function (err, results) {
    console.log(results);
  });

});

If you would like to use a Google Service Account to access DFP, you can do so by creating an instance of the JWT auth client.

var google = require('googleapis')

var jwtClient = new google.auth.JWT(
  SERVICE_ACCOUNT_EMAIL,
  'path/to/key.pem,
  null,
  ['https://www.googleapis.com/auth/dfp']);

dfpUser.setClient(jwtClient)

=======

This application requires a working oAuth refresh token to make requests. If you don't include a refresh token you will get an "No refresh token is set" error. If you include a bad token, you'll get an "illegal access" error. Service accounts are not supported.

To setup a refresh token manually, follow Google's instructions for using cURL. The main steps are included below.

• Setup a oAuth "installed application" in the Google Developer Console.

• Create a verification request using this installed application's client ID. (If you miss this step you'll get an authorization_pending error from Google on the next step.) Note that any slashes in a device_code will need to be escaped.

curl -d "client_id={YOUR_OAUTH_CLIENT_ID}&scope=https://www.googleapis.com/auth/dfp" https://accounts.google.com/o/oauth2/device/code

{
  "device_code" : "ABCD-EFGH4/MEiMYvOO1THXLV_fHGGN8obAgb5XFs1Uctj-QsyYsQk",
  "user_code" : "ABCD-EFGH",
  "verification_url" : "https://www.google.com/device",
  "expires_in" : 1800,
  "interval" : 5
}

• Visit the verification_url contained in the verification request response (e.g. https://www.google.com/device) in a browser and type in the user_code provided in the verification response. A verification code will be given as a response.

• Use the provided code and your client ID and secret from the Google oAuth application to create a refresh token.

curl -d "client_id={YOUR_OAUTH_CLIENT_ID}&client_secret={YOUR_OAUTH_CLIENT_SECRET}&code={YOUR_VERIFICATION_CODE}&grant_type=http://oauth.net/grant_type/device/1.0" https://accounts.google.com/o/oauth2/token

{
  "access_token" : "ya29.JAHynQpVpjBFhvg-7VKdQ7nmD0DkmCYoWTWo535TP8QsKa6j2rFOI1i0pdclFepv_GZo9A2SrN41dA",
  "token_type" : "Bearer",
  "expires_in" : 3600,
  "id_token" : "eyJhbGciOiJSUzI1NiIsImtpZCI6IjdjZmM3YTJhMDkwYWJjOGYxMDU5MjJmMzFiN2FjZGUzYzA2NmU1NTYifQ.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.T9mTcSl5bJLKrFhldXOd1L1CnGFfZHNF1eQOmJYyp7wR3vKbz8ATTNAfyo8_2hSGt9kGrHDBcdgaq_18RYS72Tt0MclNy020romjl6rYRjs6GH93S3ZMiwra3UI3kmDXym9kyntedMS5gIPgJWfcoh0J0CTDNPBisLNrZntJv7Y",
  "refresh_token" : "1/CGpCHgTgJ28PMnh84PgQBOgHHHaLCDbDQ_0ZiINmO_g"
}

You can use urn:ietf:wg:oauth:2.0:oob for the redirect URL of non-public apps.

1. OAuth Support for more than just Refresh Token
2. No unit tests

Follow Github's recommended workflow for contributing to this project.

1. Fork it
2. Create your feature branch (git checkout -b your-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin your-new-feature)
5. Create new Pull Request