/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with this
 * work for additional information regarding copyright ownership. The ASF
 * licenses this file to you 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.
 */

module.exports = {

  /**
   * Examples:
   * <code>
   *   var actual = [{a:1, b: [1, 2], c: 3}],
   *    expected = [{a: 1, b: [1, 2]}];
   *  nestedExpect(expected, actual); // valid
   * </code>
   *
   * <code>
   *   var actual = [{a:1, b: [1, 2]}],
   *    expected = [{a: 1, b: [1, 2], c: 3}];
   *  nestedExpect(expected, actual); // invalid valid (actual[0] doesn't contains key 'c)
   * </code>
   * @param {object[]} expected
   * @param {object[]} actual
   * @method nestedExpect
   */
  nestedExpect: function (expected, actual) {
    expected.forEach(function (group, i) {
      Em.keys(group).forEach(function (key) {
        if ('array' === Em.typeOf(actual[i][key])) {
          expect(group[key]).to.eql(actual[i][key].toArray());
        }
        else {
          expect(group[key]).to.equal(actual[i][key]);
        }
      });
    });
  },

  /**
   * Get arguments for one <code>App.ajax.send</code> call according to the criteria
   * Example:
   * <pre>
   *  sinon.stub(App.ajax, 'send', Em.K);
   *  App.ajax.send({
   *    name: 'n1',
   *    sender: {},
   *    data: {
   *      f1: 'v1',
   *      f2: 'v2'
   *    }
   *  });
   *  App.ajax.send({
   *    name: 'n2',
   *    sender: {}
   *  });
   *  var args = findAjaxRequest('name', 'n1');
   *  console.log(args); // [{name: 'n1', sender: {}, data: {f1: 'v1', f2: 'v2'}}]
   *  App.ajax.send.restore();
   * </pre>
   *
   * @param {string} property field to find
   * @param {*} value value to find
   * @returns {array|null}
   */
  findAjaxRequest: function(property, value) {
    if (Em.typeOf(App.ajax.send.args) !== 'array') {
      return null;
    }
    return App.ajax.send.args.find(function (request) {
      return Em.get(request[0], property) === value;
    });
  },

  /**
   * Get arguments for several <code>App.ajax.send</code> calls according to the criteria
   * Example:
   * <pre>
   *  sinon.stub(App.ajax, 'send', Em.K);
   *  App.ajax.send({
   *    name: 'n1',
   *    sender: {},
   *    data: {
   *      f1: 'v1',
   *      f2: 'v2'
   *    }
   *  });
   *  App.ajax.send({
   *    name: 'n2',
   *    sender: {}
   *  });
   *  App.ajax.send({
   *    name: 'n2',
   *    sender: {},
   *    data: {
   *      d1: 1234
   *    }
   *  });
   *  var args = filterAjaxRequests('name', 'n2');
   *  console.log(args); // [[{name: 'n1', sender: {}}], [{name: 'n2', sender: {}, data: {d1: 1234}}]]
   *  App.ajax.send.restore();
   * </pre>
   *
   * @param {string} property field to filter
   * @param {*} value value to filter
   * @returns {array}
   */
  filterAjaxRequests: function (property, value) {
    if (Em.typeOf(App.ajax.send.args) !== 'array') {
      return [];
    }
    return App.ajax.send.args.filter(function (request) {
      return Em.get(request[0], property) === value;
    });
  }

};