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/*
 * SonarQube
 * Copyright (C) 2009-2017 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
import $ from 'jquery';
import { uniqueId } from 'lodash';

function createFrame() {
  const uuid = uniqueId('upload-form-');
  return $('<iframe></iframe>')
    .prop('frameborder', 0)
    .prop('width', 0)
    .prop('height', 0)
    .prop('id', uuid)
    .prop('name', uuid)
    .css('display', 'none');
}

export default function(options) {
  const deferred = new $.Deferred();
  const body = $('body');
  const frame = createFrame();
  const parent = options.form.parent();
  const clonedForm = options.form.detach();

  clonedForm.prop('target', frame.prop('id')).appendTo(frame);

  frame.appendTo(body);

  frame.on('load', function() {
    const result = this.contentWindow.document.body.textContent;
    try {
      const js = JSON.parse(result);
      deferred.resolve(js);
    } catch (e) {
      deferred.resolve(result);
    }
    clonedForm.detach().appendTo(parent);
    frame.off('load').remove();
  });

  clonedForm.submit();

  return deferred.promise();
}