import { waitForAsync, ComponentFixture, TestBed, tick, fakeAsync } from '@angular/core/testing';
import { of as observableOf, of } from 'rxjs';
import { RestResponse } from '../core/cache/response.models';
import { CommonModule } from '@angular/common';
import { RouterTestingModule } from '@angular/router/testing';
import { TranslateModule } from '@ngx-translate/core';
import { FormBuilder, ReactiveFormsModule } from '@angular/forms';
import { Router } from '@angular/router';
import { NotificationsService } from '../shared/notifications/notifications.service';
import { CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { EpersonRegistrationService } from '../core/data/eperson-registration.service';
import { By } from '@angular/platform-browser';
import { RouterStub } from '../shared/testing/router.stub';
import { NotificationsServiceStub } from '../shared/testing/notifications-service.stub';
import { RegisterEmailFormComponent } from './register-email-form.component';
import { createSuccessfulRemoteDataObject$ } from '../shared/remote-data.utils';
import { ConfigurationDataService } from '../core/data/configuration-data.service';
import { GoogleRecaptchaService } from '../core/google-recaptcha/google-recaptcha.service';
import { CookieService } from '../core/services/cookie.service';
import { CookieServiceMock } from '../shared/mocks/cookie.service.mock';

describe('RegisterEmailComponent', () => {

  let comp: RegisterEmailFormComponent;
  let fixture: ComponentFixture<RegisterEmailFormComponent>;

  let router;
  let epersonRegistrationService: EpersonRegistrationService;
  let notificationsService;

  const configurationDataService = jasmine.createSpyObj('configurationDataService', {
    findByPropertyName: jasmine.createSpy('findByPropertyName')
  });

  const captchaVersion$ = of('v3');
  const captchaMode$ = of('invisible');
  const confResponse$ = createSuccessfulRemoteDataObject$({ values: ['true'] });
  const confResponseDisabled$ = createSuccessfulRemoteDataObject$({ values: ['false'] });

  const googleRecaptchaService = jasmine.createSpyObj('googleRecaptchaService', {
    getRecaptchaToken: Promise.resolve('googleRecaptchaToken'),
    executeRecaptcha: Promise.resolve('googleRecaptchaToken'),
    getRecaptchaTokenResponse: Promise.resolve('googleRecaptchaToken'),
    captchaVersion: captchaVersion$,
    captchaMode: captchaMode$,
  });
  beforeEach(waitForAsync(() => {

    router = new RouterStub();
    notificationsService = new NotificationsServiceStub();

    epersonRegistrationService = jasmine.createSpyObj('epersonRegistrationService', {
      registerEmail: createSuccessfulRemoteDataObject$({})
    });

    TestBed.configureTestingModule({
      imports: [CommonModule, RouterTestingModule.withRoutes([]), TranslateModule.forRoot(), ReactiveFormsModule],
      declarations: [RegisterEmailFormComponent],
      providers: [
        {provide: Router, useValue: router},
        {provide: EpersonRegistrationService, useValue: epersonRegistrationService},
        {provide: ConfigurationDataService, useValue: configurationDataService},
        {provide: FormBuilder, useValue: new FormBuilder()},
        {provide: NotificationsService, useValue: notificationsService},
        {provide: CookieService, useValue: new CookieServiceMock()},
        {provide: GoogleRecaptchaService, useValue: googleRecaptchaService},
      ],
      schemas: [CUSTOM_ELEMENTS_SCHEMA]
    }).compileComponents();
  }));
  beforeEach(() => {
    fixture = TestBed.createComponent(RegisterEmailFormComponent);
    comp = fixture.componentInstance;
    googleRecaptchaService.captchaVersion$ = captchaVersion$;
    googleRecaptchaService.captchaMode$ = captchaMode$;
    configurationDataService.findByPropertyName.and.returnValues(confResponseDisabled$, confResponseDisabled$, confResponseDisabled$, confResponseDisabled$, confResponseDisabled$, confResponseDisabled$, confResponseDisabled$, confResponseDisabled$, confResponseDisabled$, confResponseDisabled$);

    fixture.detectChanges();
  });
  describe('init', () => {
    it('should initialise the form', () => {
      const elem = fixture.debugElement.queryAll(By.css('input#email'))[0].nativeElement;
      expect(elem).toBeDefined();
    });
  });
  describe('email validation', () => {
    it('should be invalid when no email is present', () => {
      expect(comp.form.invalid).toBeTrue();
    });
    it('should be invalid when no valid email is present', () => {
      comp.form.patchValue({email: 'invalid'});
      expect(comp.form.invalid).toBeTrue();
    });
    it('should be valid when a valid email is present', () => {
      comp.form.patchValue({email: 'valid@email.org'});
      expect(comp.form.invalid).toBeFalse();
    });
  });
  describe('register', () => {
    it('should send a registration to the service and on success display a message and return to home', () => {
      comp.form.patchValue({email: 'valid@email.org'});

      comp.register();
      expect(epersonRegistrationService.registerEmail).toHaveBeenCalledWith('valid@email.org');
      expect(notificationsService.success).toHaveBeenCalled();
      expect(router.navigate).toHaveBeenCalledWith(['/home']);
    });
    it('should send a registration to the service and on error display a message', () => {
      (epersonRegistrationService.registerEmail as jasmine.Spy).and.returnValue(observableOf(new RestResponse(false, 400, 'Bad Request')));

      comp.form.patchValue({email: 'valid@email.org'});

      comp.register();
      expect(epersonRegistrationService.registerEmail).toHaveBeenCalledWith('valid@email.org');
      expect(notificationsService.error).toHaveBeenCalled();
      expect(router.navigate).not.toHaveBeenCalled();
    });
  });
  describe('register with google recaptcha', () => {
    beforeEach(fakeAsync(() => {
      configurationDataService.findByPropertyName.and.returnValues(confResponse$, confResponse$, confResponse$, confResponse$, confResponse$, confResponse$, confResponse$, confResponse$, confResponse$, confResponse$);
      googleRecaptchaService.captchaVersion$ = captchaVersion$;
      googleRecaptchaService.captchaMode$ = captchaMode$;
      comp.ngOnInit();
      fixture.detectChanges();
    }));

    it('should send a registration to the service and on success display a message and return to home', fakeAsync(() => {
      comp.form.patchValue({email: 'valid@email.org'});
      comp.register();
      tick();
      expect(epersonRegistrationService.registerEmail).toHaveBeenCalledWith('valid@email.org', 'googleRecaptchaToken');
      expect(notificationsService.success).toHaveBeenCalled();
      expect(router.navigate).toHaveBeenCalledWith(['/home']);
    }));
    it('should send a registration to the service and on error display a message', fakeAsync(() => {
      (epersonRegistrationService.registerEmail as jasmine.Spy).and.returnValue(observableOf(new RestResponse(false, 400, 'Bad Request')));

      comp.form.patchValue({email: 'valid@email.org'});

      comp.register();
      tick();
      expect(epersonRegistrationService.registerEmail).toHaveBeenCalledWith('valid@email.org', 'googleRecaptchaToken');
      expect(notificationsService.error).toHaveBeenCalled();
      expect(router.navigate).not.toHaveBeenCalled();
    }));
  });
});