@20minutes/node-google-dfp/README.md

Google DFP API Helper Library for NodeJS

# Google DFP API Client for NodeJS
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This is exactly the same plugin as [node-google-dfp](https://github.com/rubicon-project/node-google-dfp) but with dependencies up to date.

```
yarn add @20minutes/node-google-dfp
```

## Basics

Initialize the DFP Instance.

```JavaScript
import Dfp from 'node-google-dfp'
dfpUser = new Dfp.User(NETWORK_CODE, APP_NAME, VERSION)
```

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

```JavaScript
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


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

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

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

### Service accounts example

If you would like to use a Google [Service Account](https://developers.google.com/doubleclick-publishers/docs/service_accounts) to access DFP, you can do so by creating an instance of the JWT auth client.

```JavaScript
import { JWT } from 'google-auth-library'

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

dfpUser.setClient(jwtClient)

```

### oAuth setup

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](https://developers.google.com/accounts/docs/OAuth2ForDevices#obtainingatoken) 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.

Known Issues
------------

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