// Copyright 2016, Google, Inc.

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

'use strict';

// [START helloworld]

/**

* Background Cloud Function.

*

* @param {Object} context Cloud Function context.

* @param {Object} data Request data, provided by a trigger.

* @param {string} data.message Message, provided by the trigger.

*/

exports.helloWorld = function helloWorld (context, data) {

if (data.message === undefined) {

// This is an error case, "message" is required

context.failure('No message defined!');

} else {

// Everything is ok

console.log(data.message);

context.success();

}

};

// [END helloworld]

// [START helloPromise]

var request = require('request-promise');

/**

* Background Cloud Function that returns a Promise. Note that we don't pass

* a "context" argument to the function.

*

* @param {Object} data Request data, provided by a trigger.

* @returns {Promise}

*/

exports.helloPromise = function helloPromise (data) {

return request({

uri: data.endpoint

});

};

// [END helloPromise]

// [START helloSynchronous]

/**

* Background Cloud Function that returns synchronously. Note that we don't pass

* a "context" argument to the function.

*

* @param {Object} data Request data, provided by a trigger.

*/

exports.helloSynchronous = function helloSynchronous (data) {

// This function returns synchronously

if (data.something === true) {

return 'Something is true!';

} else {

throw new Error('Something was not true!');

}

};

// [END helloSynchronous]