/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import {Component, Directive, ElementRef, Injector, Input, NgModule, destroyPlatform} from '@angular/core';
import {async} from '@angular/core/testing';
import {BrowserModule} from '@angular/platform-browser';
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {fixmeIvy} from '@angular/private/testing';
import {UpgradeComponent, UpgradeModule, downgradeComponent} from '@angular/upgrade/static';
import * as angular from '@angular/upgrade/static/src/common/angular1';

import {bootstrap, html, multiTrim, withEachNg1Version} from '../test_helpers';

withEachNg1Version(() => {
  describe('examples', () => {

    beforeEach(() => destroyPlatform());
    afterEach(() => destroyPlatform());

    it('should have AngularJS loaded', () => expect(angular.version.major).toBe(1));

    fixmeIvy('FW-714: ng1 projected content is not being rendered')
        .it('should verify UpgradeAdapter example', async(() => {

              // This is wrapping (upgrading) an AngularJS component to be used in an Angular
              // component
              @Directive({selector: 'ng1'})
              class Ng1Component extends UpgradeComponent {
                // TODO(issue/24571): remove '!'.
                @Input() title !: string;

                constructor(elementRef: ElementRef, injector: Injector) {
                  super('ng1', elementRef, injector);
                }
              }

              // This is an Angular component that will be downgraded
              @Component({
                selector: 'ng2',
                template: 'ng2[<ng1 [title]="nameProp">transclude</ng1>](<ng-content></ng-content>)'
              })
              class Ng2Component {
                // TODO(issue/24571): remove '!'.
                @Input('name') nameProp !: string;
              }

              // This module represents the Angular pieces of the application
              @NgModule({
                declarations: [Ng1Component, Ng2Component],
                entryComponents: [Ng2Component],
                imports: [BrowserModule, UpgradeModule]
              })
              class Ng2Module {
                ngDoBootstrap() { /* this is a placeholder to stop the bootstrapper from
                                     complaining */
                }
              }

              // This module represents the AngularJS pieces of the application
              const ng1Module =
                  angular
                      .module('myExample', [])
                      // This is an AngularJS component that will be upgraded
                      .directive(
                          'ng1',
                          () => {
                            return {
                              scope: {title: '='},
                              transclude: true,
                              template: 'ng1[Hello {{title}}!](<span ng-transclude></span>)'
                            };
                          })
                      // This is wrapping (downgrading) an Angular component to be used in
                      // AngularJS
                      .directive('ng2', downgradeComponent({component: Ng2Component}));

              // This is the (AngularJS) application bootstrap element
              // Notice that it is actually a downgraded Angular component
              const element = html('<ng2 name="World">project</ng2>');

              // Let's use a helper function to make this simpler
              bootstrap(platformBrowserDynamic(), Ng2Module, element, ng1Module).then(upgrade => {
                expect(multiTrim(element.textContent))
                    .toBe('ng2[ng1[Hello World!](transclude)](project)');
              });
            }));
  });
});