amatriain/openreader

/**
 * Web Worker to add or remove subscriptions in a separate thread.
 */

importScripts('<%= asset_path 'workers/common/do_post' %>');
importScripts('<%= asset_path 'workers/common/do_delete' %>');

// Callback for messages from the main thread
onmessage = function(e){
  // Constants for the different operations the web worker can perform
  var SUBSCRIBE = "subscribe";
  var UNSUBSCRIBE = "unsubscribe";

  // Operation to perform: subscribe or unsubscribe
  var operation = e.data.operation;

  // CSRF token
  var token = e.data.token;

  // Add a subscription
  if (operation == SUBSCRIBE){
    // URL of the feed to subscribe
    var feed_url = e.data.feed_url;
    var url = "/api/feeds.json";
    var data = {feed: {url: feed_url}};
    do_post(operation, url, token, data, 0);
  }
  // Remove a subscription
  else if (operation == UNSUBSCRIBE){
    // ID of the feed to unsubscribe
    var feed_id = e.data.feed_id;
    var data = {feed: {id: feed_id}};
    var url = "/api/feeds/" + feed_id + ".json";
    do_delete(operation, url, token, data, 0);
  }
}