/**
 * @license
 * Copyright Google LLC 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 {DOCUMENT} from '@angular/common';
import {
  ApplicationRef,
  Component,
  DoCheck,
  NgModule,
  OnInit,
  TestabilityRegistry,
} from '@angular/core';
import {getTestBed} from '@angular/core/testing';
import {BrowserModule} from '@angular/platform-browser';
import {withBody} from '@angular/private/testing';

import {NgModuleFactory} from '../src/render3/ng_module_ref';

describe('ApplicationRef bootstrap', () => {
  @Component({
    selector: 'hello-world',
    template: '<div>Hello {{ name }}</div>',
  })
  class HelloWorldComponent implements OnInit, DoCheck {
    log: string[] = [];
    name = 'World';

    ngOnInit(): void {
      this.log.push('OnInit');
    }
    ngDoCheck(): void {
      this.log.push('DoCheck');
    }
  }

  @NgModule({
    declarations: [HelloWorldComponent],
    bootstrap: [HelloWorldComponent],
    imports: [BrowserModule],
    providers: [{provide: DOCUMENT, useFactory: () => document}],
  })
  class MyAppModule {}

  it(
    'should bootstrap hello world',
    withBody('<hello-world></hello-world>', async () => {
      const MyAppModuleFactory = new NgModuleFactory(MyAppModule);
      const moduleRef = await getTestBed().platform.bootstrapModuleFactory(MyAppModuleFactory, {
        ngZone: 'noop',
      });
      const appRef = moduleRef.injector.get(ApplicationRef);
      const helloWorldComponent = appRef.components[0].instance as HelloWorldComponent;
      expect(document.body.innerHTML).toEqual(
        '<hello-world ng-version="0.0.0-PLACEHOLDER"><div>Hello World</div></hello-world>',
      );
      expect(helloWorldComponent.log).toEqual(['OnInit', 'DoCheck']);

      helloWorldComponent.name = 'Mundo';
      appRef.tick();
      expect(document.body.innerHTML).toEqual(
        '<hello-world ng-version="0.0.0-PLACEHOLDER"><div>Hello Mundo</div></hello-world>',
      );
      expect(helloWorldComponent.log).toEqual(['OnInit', 'DoCheck', 'DoCheck']);

      // Cleanup TestabilityRegistry
      const registry: TestabilityRegistry = getTestBed().get(TestabilityRegistry);
      registry.unregisterAllApplications();
    }),
  );

  it(
    'should expose the `window.ng` global utilities',
    withBody('<hello-world></hello-world>', async () => {
      const MyAppModuleFactory = new NgModuleFactory(MyAppModule);
      const moduleRef = await getTestBed().platform.bootstrapModuleFactory(MyAppModuleFactory, {
        ngZone: 'noop',
      });

      const glob = typeof global !== 'undefined' ? global : window;
      const ngUtils = (glob as any).ng;
      expect(ngUtils.getComponent).toBeTruthy();
    }),
  );
});
