/**
 * 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.
 */

'use strict';

describe('Controller: RcmedSelectionCtrl', function () {

  // load the controller's module
  beforeEach(module('ocwUiApp'));

  var RcmedselectionCtrl,
    scope;

  // Initialize the controller and a mock scope
  beforeEach(inject(function ($controller, $rootScope) {
    scope = $rootScope.$new();
    RcmedselectionCtrl = $controller('RcmedSelectionCtrl', {
      $scope: scope
    });
  }));

  it('should automatically query RCMED on initialization', function() {
    inject(function($rootScope, $httpBackend) {
      $httpBackend.expectJSONP($rootScope.baseURL + '/rcmed/datasets/?callback=JSON_CALLBACK').
        respond(200, [{longname: 1}, {longname: 2}]);
      $httpBackend.expectGET($rootScope.baseURL + '/rcmed/parameters/bounds/').respond(503)
      $httpBackend.expectGET('views/main.html').respond(200);
      $httpBackend.flush();

      expect(scope.availableObs.length).toBe(3);
      expect(scope.availableObs[0]).toEqual({longname: "Please select an option"});
      expect(scope.availableObs[1]).toEqual({longname: 1});
    });
  });

  it('should initialize the getObservations function', function() {
    inject(function($rootScope, $httpBackend) {
      $httpBackend.expectJSONP($rootScope.baseURL + '/rcmed/datasets/?callback=JSON_CALLBACK').
        respond(200, [{longname: 1}, {longname: 2}]);
      $httpBackend.expectGET($rootScope.baseURL + '/rcmed/parameters/bounds/').respond(503)
      $httpBackend.expectGET('views/main.html').respond(200);
      $httpBackend.flush();

      expect(scope.availableObs.length).toBe(3);
      expect(scope.availableObs[0]).toEqual({longname: "Please select an option"});
      expect(scope.availableObs[1]).toEqual({longname: 1});

      // Set up a failed query
      $httpBackend.expectJSONP($rootScope.baseURL + '/rcmed/datasets/?callback=JSON_CALLBACK').
        respond(404);
      scope.getObservations();
      $httpBackend.flush();

      expect(scope.availableObs.length).toBe(1);
      expect(scope.availableObs[0]).toEqual('Unable to query RCMED');
    });
  });

  it('should initialize dataSelectUpdated function', function() {
    inject(function($rootScope, $controller, $httpBackend) {
      $httpBackend.expectJSONP($rootScope.baseURL + '/rcmed/datasets/?callback=JSON_CALLBACK').
        respond(200, [{longname: 1}, {longname: 2}]);
      $httpBackend.expectGET($rootScope.baseURL + '/rcmed/parameters/bounds/').respond(503)
      $httpBackend.expectGET('views/main.html').respond(200);
      $httpBackend.flush();

      // Add the test dataset to our scope
      scope.datasetSelection = {shortname: 'TRMM'}

      // Test return with only single parameter
      $httpBackend.expectJSONP($rootScope.baseURL + '/rcmed/parameters/dataset/' +
                  scope.datasetSelection['shortname'] +
                  '?callback=JSON_CALLBACK').
             respond(200, ['pcp']);
      scope.dataSelectUpdated();
      $httpBackend.flush();

      expect(scope.parameterSelection).toEqual('pcp');

      // Test return with multiple parameters
      $httpBackend.expectJSONP($rootScope.baseURL + '/rcmed/parameters/dataset/' +
                  scope.datasetSelection['shortname'] +
                  '?callback=JSON_CALLBACK').
             respond(200, ['pcp', 'pcp2']);
      scope.dataSelectUpdated();
      $httpBackend.flush();

      expect(scope.parameterSelection).toEqual({shortname: 'Please select a parameter'});
    });
  });

  it('should initialze the addObservation function', function() {
    inject(function($rootScope, $controller, $httpBackend) {
      $httpBackend.expectJSONP($rootScope.baseURL + '/rcmed/datasets/?callback=JSON_CALLBACK').
        respond(200, [{longname: 1}, {longname: 2}]);
      $httpBackend.expectGET($rootScope.baseURL + '/rcmed/parameters/bounds/').respond(503)
      $httpBackend.expectGET('views/main.html').respond(200);
      $httpBackend.flush();

      scope.datasetSelection = {
        "dataset_id" : "3",
        "shortname"  : "TRMM",
        "longname"   : "Tropical Rainfall Measuring Mission Dataset",
        "source"     : "Readme for the Tropical Rainfall Measuring Mission (TRMM) Data Set"
      };

      scope.parameterSelection = {
        "parameter_id":"36",
        "shortname":"pcp",
        "datasetshortname":"TRMM",
        "longname":"TRMM v.6 Monthly Precipitation",
        "units":"mm\/day"
      };

      // addObservations does a refresh of the selections with a re-query of the backend
      // so we need to catch that call!
      $httpBackend.expectJSONP($rootScope.baseURL + '/rcmed/datasets/?callback=JSON_CALLBACK').
        respond(200, [{longname: 1}, {longname: 2}]);

      scope.addObservation();
      $httpBackend.flush();

      expect(scope.datasetCount.length).toBe(1);
      // The selection observation should be reset so we shouldn't have
      // any selected observation parameters.
      expect(scope.retrievedObsParams).toEqual([]);
    });
  });
});