define([
  'angular',
  '../core_module',
  'app/core/utils/kbn',
],
function (angular, coreModule, kbn) {
  'use strict';

  coreModule.directive('tip', function($compile) {
    return {
      restrict: 'E',
      link: function(scope, elem, attrs) {
        var _t = '<i class="grafana-tip fa fa-'+(attrs.icon||'question-circle')+'" bs-tooltip="\''+
          kbn.addslashes(elem.text())+'\'"></i>';
        _t = _t.replace(/{/g, '\\{').replace(/}/g, '\\}');
        elem.replaceWith($compile(angular.element(_t))(scope));
      }
    };
  });

  coreModule.directive('watchChange', function() {
    return {
      scope: { onchange: '&watchChange' },
      link: function(scope, element) {
        element.on('input', function() {
          scope.$apply(function () {
            scope.onchange({ inputValue: element.val() });
          });
        });
      }
    };
  });

  coreModule.directive('editorOptBool', function($compile) {
    return {
      restrict: 'E',
      link: function(scope, elem, attrs) {
        var ngchange = attrs.change ? (' ng-change="' + attrs.change + '"') : '';
        var tip = attrs.tip ? (' <tip>' + attrs.tip + '</tip>') : '';
        var showIf = attrs.showIf ? (' ng-show="' + attrs.showIf + '" ') : '';

        var template = '<div class="editor-option text-center"' + showIf + '>' +
          ' <label for="' + attrs.model + '" class="small">' +
          attrs.text + tip + '</label>' +
          '<input class="cr1" id="' + attrs.model + '" type="checkbox" ' +
          '       ng-model="' + attrs.model + '"' + ngchange +
          '       ng-checked="' + attrs.model + '"></input>' +
          ' <label for="' + attrs.model + '" class="cr1"></label>';
        elem.replaceWith($compile(angular.element(template))(scope));
      }
    };
  });

  coreModule.directive('editorCheckbox', function($compile, $interpolate) {
    return {
      restrict: 'E',
      link: function(scope, elem, attrs) {
        var text = $interpolate(attrs.text)(scope);
        var model = $interpolate(attrs.model)(scope);
        var ngchange = attrs.change ? (' ng-change="' + attrs.change + '"') : '';
        var tip = attrs.tip ? (' <tip>' + attrs.tip + '</tip>') : '';
        var label = '<label for="' + scope.$id + model + '" class="checkbox-label">' +
          text + tip + '</label>';

        var template = '<input class="cr1" id="' + scope.$id + model + '" type="checkbox" ' +
          '       ng-model="' + model + '"' + ngchange +
          '       ng-checked="' + model + '"></input>' +
          ' <label for="' + scope.$id + model + '" class="cr1"></label>';

        template = label + template;
        elem.replaceWith($compile(angular.element(template))(scope));
      }
    };
  });

  coreModule.directive('gfDropdown', function ($parse, $compile, $timeout) {
    function buildTemplate(items, placement) {
      var upclass = placement === 'top' ? 'dropup' : '';
      var ul = [
        '<ul class="dropdown-menu ' + upclass + '" role="menu" aria-labelledby="drop1">',
        '</ul>'
      ];

      angular.forEach(items, function (item, index) {
        if (item.divider) {
          return ul.splice(index + 1, 0, '<li class="divider"></li>');
        }

        var li = '<li' + (item.submenu && item.submenu.length ? ' class="dropdown-submenu"' : '') + '>' +
          '<a tabindex="-1" ng-href="' + (item.href || '') + '"' + (item.click ? ' ng-click="' + item.click + '"' : '') +
          (item.target ? ' target="' + item.target + '"' : '') + (item.method ? ' data-method="' + item.method + '"' : '') +
          (item.configModal ? ' dash-editor-link="' + item.configModal + '"' : "") +
          '>' + (item.text || '') + '</a>';

        if (item.submenu && item.submenu.length) {
          li += buildTemplate(item.submenu).join('\n');
        }

        li += '</li>';
        ul.splice(index + 1, 0, li);
      });
      return ul;
    }

    return {
      restrict: 'EA',
      scope: true,
      link: function postLink(scope, iElement, iAttrs) {
        var getter = $parse(iAttrs.gfDropdown), items = getter(scope);
        $timeout(function () {
          var placement = iElement.data('placement');
          var dropdown = angular.element(buildTemplate(items, placement).join(''));
          dropdown.insertAfter(iElement);
          $compile(iElement.next('ul.dropdown-menu'))(scope);
        });

        iElement.addClass('dropdown-toggle').attr('data-toggle', 'dropdown');
      }
    };
  });

});
