// posts AJAX request to Ingress API.
// action: last part of the actual URL, the rpc/dashboard. is
//         added automatically
// data: JSON data to post. method will be derived automatically from
//       action, but may be overridden. Expects to be given Hash.
//       Strings are not supported.
// success: method to call on success. See jQuery API docs for avail-
//          able arguments: http://api.jquery.com/jQuery.ajax/
// error: see above. Additionally it is logged if the request failed.
window.postAjax = function(action, data, success, error) {

  var versionStr = nemesis.dashboard.config.CURRENT_VERSION;
  var post_data = JSON.stringify($.extend({}, data, {v: versionStr, b: "", c: ""}));

  var remove = function(data, textStatus, jqXHR) { window.requests.remove(jqXHR); };
  var errCnt = function(jqXHR) { window.failedRequestCount++; window.requests.remove(jqXHR); };
  var result = $.ajax({
    url: '/r/'+action,
    type: 'POST',
    data: post_data,
    context: data,
    dataType: 'json',
    success: [remove, success],
    error: error ? [errCnt, error] : errCnt,
    contentType: 'application/json; charset=utf-8',
    beforeSend: function(req) {
      req.setRequestHeader('X-CSRFToken', readCookie('csrftoken'));
    }
  });
  result.action = action;
  return result;
}