Github = {};

// Request Github credentials for the user

// @param options {optional}

// @param credentialRequestCompleteCallback {Function} Callback function to call on

// completion. Takes one argument, credentialToken on success, or Error on

// error.

Github.requestCredential = function (options, credentialRequestCompleteCallback) {

// support both (options, callback) and (callback).

if (!credentialRequestCompleteCallback && typeof options === 'function') {

credentialRequestCompleteCallback = options;

options = {};

}

var config = ServiceConfiguration.configurations.findOne({service: 'github'});

if (!config) {

credentialRequestCompleteCallback && credentialRequestCompleteCallback(

new ServiceConfiguration.ConfigError());

return;

}

var credentialToken = Random.secret();

var scope = (options && options.requestPermissions) || ['user:email'];

var flatScope = _.map(scope, encodeURIComponent).join('+');

var loginStyle = OAuth._loginStyle('github', config, options);

var loginUrl =

'https://github.com/login/oauth/authorize' +

'?client_id=' + config.clientId +

'&scope=' + flatScope +

'&redirect_uri=' + OAuth._redirectUri('github', config) +

'&state=' + OAuth._stateParam(loginStyle, credentialToken, options && options.redirectUrl);

OAuth.launchLogin({

loginService: "github",

loginStyle: loginStyle,

loginUrl: loginUrl,

credentialRequestCompleteCallback: credentialRequestCompleteCallback,

credentialToken: credentialToken,

popupOptions: {width: 900, height: 450}

});

};