import { includes, words, capitalize, extend } from 'lodash';
import template from './parameters.html';
import parameterSettingsTemplate from './parameter-settings.html';

function humanize(str) {
  return capitalize(words(str).join(' '));
}

const ParameterSettingsComponent = {
  template: parameterSettingsTemplate,
  bindings: {
    resolve: '<',
    close: '&',
    dismiss: '&',
  },
  controller($sce, Query) {
    'ngInject';

    this.trustAsHtml = html => $sce.trustAsHtml(html);
    this.parameter = this.resolve.parameter;
    this.isNewParameter = this.parameter.name === '';
    this.shouldGenerateTitle = this.isNewParameter && this.parameter.title === '';

    this.parameterAlreadyExists = name => includes(this.resolve.existingParameters, name);

    if (this.parameter.queryId) {
      Query.get({ id: this.parameter.queryId }, (query) => {
        this.queries = [query];
      });
    }

    this.searchQueries = (term) => {
      if (!term || term.length < 3) {
        return;
      }

      Query.query({ q: term }, (results) => {
        this.queries = results.results;
      });
    };

    this.updateTitle = () => {
      if (this.shouldGenerateTitle) {
        this.parameter.title = humanize(this.parameter.name);
      }
    };
  },
};

function ParametersDirective($location, $uibModal) {
  return {
    restrict: 'E',
    transclude: true,
    scope: {
      parameters: '=',
      syncValues: '=?',
      editable: '=?',
      changed: '&onChange',
    },
    template,
    link(scope) {
      // is this the correct location for this logic?
      if (scope.syncValues !== false) {
        scope.$watch(
          'parameters',
          () => {
            if (scope.changed) {
              scope.changed({});
            }
            const params = extend({}, $location.search());
            scope.parameters.forEach((param) => {
              extend(params, param.toUrlParams());
            });
            $location.search(params);
          },
          true,
        );
      }

      scope.showParameterSettings = (param) => {
        $uibModal.open({
          component: 'parameterSettings',
          resolve: {
            parameter: param,
          },
        });
      };
    },
  };
}

export default function init(ngModule) {
  ngModule.directive('parameters', ParametersDirective);
  ngModule.component('parameterSettings', ParameterSettingsComponent);
}

init.init = true;