Small JS sample to push pins from inside a PebbleKit JS app

timeline.js

/******************************* timeline lib *********************************/

// The timeline public URL root
var API_URL_ROOT = 'https://timeline-api.getpebble.com/';

/**
 * Send a request to the Pebble public web timeline API.
 * @param pin The JSON pin to insert. Must contain 'id' field.
 * @param type The type of request, either PUT or DELETE.
 * @param topics Array of topics if a shared pin, 'null' otherwise.
 * @param apiKey Timeline API key for this app, available from dev-portal.getpebble.com
 * @param callback The callback to receive the responseText after the request has completed.
 */
function timelineRequest(pin, type, topics, apiKey, callback) {
  // User or shared?
  var url = API_URL_ROOT + 'v1/' + ((topics != null) ? 'shared/' : 'user/') + 'pins/' + pin.id;

  // Create XHR
  var xhr = new XMLHttpRequest();
  xhr.onload = function () {
    console.log('timeline: response received: ' + this.responseText);
    callback(this.responseText);
  };
  xhr.open(type, url);

  // Set headers
  xhr.setRequestHeader('Content-Type', 'application/json');
  if(topics != null) {
    xhr.setRequestHeader('X-Pin-Topics', '' + topics.join(','));
    xhr.setRequestHeader('X-API-Key', '' + apiKey);
  }

  // Get token
  Pebble.getTimelineToken(function(token) {
    // Add headers
    xhr.setRequestHeader('X-User-Token', '' + token);

    // Send
    xhr.send(JSON.stringify(pin));
    console.log('timeline: request sent.');
  }, function(error) { console.log('timeline: error getting timeline token: ' + error); });
}

/**
 * Insert a pin into the timeline for this user.
 * @param pin The JSON pin to insert.
 * @param callback The callback to receive the responseText after the request has completed.
 */
function insertUserPin(pin, callback) {
  timelineRequest(pin, 'PUT', null, null, callback);
}

module.exports.insertUserPin = insertUserPin;

/**
 * Delete a pin from the timeline for this user.
 * @param pin The JSON pin to delete.
 * @param callback The callback to receive the responseText after the request has completed.
 */
function deleteUserPin(pin, callback) {
  timelineRequest(pin, 'DELETE', null, null, callback);
}

module.exports.deleteUserPin = deleteUserPin;

/**
 * Insert a pin into the timeline for these topics.
 * @param pin The JSON pin to insert.
 * @param topics Array of topics to insert pin to.
 * @param apiKey Timeline API key for this app, available from dev-portal.getpebble.com
 * @param callback The callback to receive the responseText after the request has completed.
 */
function insertSharedPin(pin, topics, apiKey, callback) {
  timelineRequest(pin, 'PUT', topics, apiKey, callback);
}

module.exports.insertSharedPin = insertSharedPin;

/**
 * Delete a pin from the timeline for these topics.
 * @param pin The JSON pin to delete.
 * @param topics Array of topics to delete pin from.
 * @param apiKey Timeline API key for this app, available from dev-portal.getpebble.com
 * @param callback The callback to receive the responseText after the request has completed.
 */
function deleteSharedPin(pin, topics, apiKey, callback) {
  timelineRequest(pin, 'DELETE', topics, apiKey, callback);
}

module.exports.deleteSharedPin = deleteSharedPin;

/****************************** end timeline lib ******************************/