/**
 * An element which displays the vulnerabilities in an image.
 */
angular.module('quay').directive('imageVulnerabilityView', function () {
  var directiveDefinitionObject = {
    priority: 0,
    templateUrl: '/static/directives/image-vulnerability-view.html',
    replace: false,
    transclude: true,
    restrict: 'C',
    scope: {
      'repository': '=repository',
      'image': '=image',
      'isEnabled': '=isEnabled'
    },
    controller: function($scope, $element, Config, ApiService, VulnerabilityService, ViewArrayFactory, ImageMetadataService, TableService) {
      $scope.options = {
        'filter': null,
        'fixableVulns': false,
        'predicate': 'score',
        'reverse': false,
      };

      $scope.TableService = TableService;
      $scope.loading = false;

      $scope.toggleDetails = function(vuln) {
        vuln.expanded = !vuln.expanded;
      };

      $scope.getDistro = function(vuln) {
        if (vuln['severity'] == 'Defcon 1') {
          return 'the Quay Engineering Team';
        }

        return vuln['namespace'].split(':', 1);
      };

      $scope.getSeverityTooltip = function(vuln) {
        var distro = $scope.getDistro(vuln);

        if (vuln.scoreDivergence != 'adjusted-lower') {
          return 'Marked with a ' + vuln['severity'] + ' severity by ' + distro;
        }

        return 'Note: This vulnerability was originally given a CVSSv2 score ' +
               'of ' + vuln['cvssScore'] + ' by NVD, but was subsequently reclassifed as a ' +
               vuln['severity'] + ' issue by ' + distro;
      };

      var buildOrderedVulnerabilities = function() {
        if (!$scope.vulnerabilitiesInfo) {
          return;
        }

        var vulnerabilities = $scope.vulnerabilitiesInfo.vulnerabilities;
        $scope.orderedVulnerabilities = TableService.buildOrderedItems(vulnerabilities, $scope.options,
            ['name', 'featureName', 'imageCommand'],
            ['score'],
            function(item) {
              return !$scope.options.fixableVulns || item['fixedInVersion'];
            })
      };

      var buildChart = function() {
        var chartData = $scope.vulnerabilitiesInfo.severityBreakdown;
        if (chartData.length == 0) {
          chartData = [{
            'label': 'None',
            'value': 1,
            'color': '#2FC98E'
          }];
        }

        var colors = [];
        for (var i = 0; i < chartData.length; ++i) {
          colors.push(chartData[i].color);
        }

        nv.addGraph(function() {
          var chart = nv.models.pieChart()
              .x(function(d) { return d.label })
              .y(function(d) { return d.value })
              .margin({left: -10, right: -10, top: -10, bottom: -10})
              .showLegend(false)
              .showLabels(true)
              .labelThreshold(.05)
              .labelType("percent")
              .donut(true)
              .color(colors)
              .donutRatio(0.5);

            d3.select("#vulnDonutChart svg")
                .datum(chartData)
                .transition()
                .duration(350)
                .call(chart);

          return chart;
        });
      };

      var loadImageVulnerabilities = function() {
        if ($scope.loading) {
          return;
        }

        $scope.loading = true;
        VulnerabilityService.loadImageVulnerabilities($scope.repository, $scope.image.id, function(resp) {
          $scope.securityStatus = resp.status;
          $scope.vulnerabilitiesInfo = VulnerabilityService.buildVulnerabilitiesInfo($scope.image, resp);

          buildOrderedVulnerabilities();
          buildChart();
          return resp;
        }, function() {
          $scope.securityStatus = 'error';
        });
      };

      $scope.$watch('options.predicate', buildOrderedVulnerabilities);
      $scope.$watch('options.reverse', buildOrderedVulnerabilities);
      $scope.$watch('options.filter', buildOrderedVulnerabilities);
      $scope.$watch('options.fixableVulns', buildOrderedVulnerabilities);

      $scope.$watch('isEnabled', function(isEnabled) {
        if ($scope.isEnabled && $scope.repository && $scope.image) {
          loadImageVulnerabilities();
        }
      });
    }
  };
  return directiveDefinitionObject;
});