getting yahoo oauth 2.0 tokens in your ionic application

yahooLogin.js

//should install cordova InAppBrowser plugin
//http://docs.phonegap.com/en/edge/cordova_inappbrowser_inappbrowser.md.html

//yahoo configs
//YAHOO.clientId, clientSecret - your yahoo application values - https://developer.yahoo.com/
//YAHOO.redirectUri - your redirect uri (should be with domain that set in yahoo app configs)
var YAHOO = {
  clientId: 'xxxxxxx',
  clientSecret: 'xxxxxxx',
  redirectUrl: 'your redirect url',
  requestAuthUrl: 'https://api.login.yahoo.com/oauth2/request_auth',
  requestTokenUrl: 'https://api.login.yahoo.com/oauth2/get_token'
}
var access_code = null,
    yahooCreadentials = btoa(YAHOO.clientId + ':' + YAHOO.clientSecret),
    yahooLoginUrl = YAHOO.requestAuthUrl +
      '?client_id=' + YAHOO.clientId +
      '&redirect_uri=' + YAHOO.redirectUrl +
      '&response_type=code';
    

//open url in in app browser and 
//add event listener to yahoo request on redirect url
var ref = window.open(yahooLoginUrl, '_blank', 'location=no');
ref.addEventListener('loadstart', function(event) {
  if(event.url.indexOf(YAHOO.redirectUrl) == 0) {
    access_code = (event.url).split("code=")[1];
    
    //post on yahoo to get access and refresh tokens
    $http({
      method: 'POST',
      url: YAHOO.requestTokenUrl,
      headers: {
        Authorization: 'Basic ' + yahooCreadentials,
       'Content-Type': 'application/x-www-form-urlencoded'
      },
      data: {
        redirect_uri: + YAHOO.redirectUrl,
        grant_type: 'authorization_code',
        code: access_code
      }
    })
    .then(
      function(response) {
        //accessToken: response.access_token
        //refreshToken: response.refresh_token
        //expiresIn: response.expires_in
        //xoauthYahooGuid: response.xoauth_yahoo_guid
      },
      function(error) {
        //show errors
      }
    );
  }
  else {
    //show errors
  }
});

//using this tokens you can get info from yahoo via api
//for example get user profile
var socialApiUrl = 'https://social.yahooapis.com/v1/user/' + xoauthYahooGuid + '/profile?format=json';
$http({
  method: 'GET',
  url: socialApiUrl,
  headers: {
    Authorization: 'Bearer ' + accessToken
  }
})
.then(
  function(response) {
    //response - user profile
  },
  function(error) {
    //show errors
  }
);