import { TestBed } from '@angular/core/testing';

import { provideMockActions } from '@ngrx/effects/testing';
import { Store } from '@ngrx/store';
import { cold, hot } from 'jasmine-marbles';

import { Observable, of as observableOf, throwError as observableThrow } from 'rxjs';

import { AuthEffects } from './auth.effects';
import {
  AuthActionTypes,
  AuthenticatedAction,
  AuthenticatedErrorAction,
  AuthenticatedSuccessAction,
  AuthenticationErrorAction,
  AuthenticationSuccessAction,
  CheckAuthenticationTokenCookieAction,
  LogOutErrorAction,
  LogOutSuccessAction,
  RefreshTokenErrorAction,
  RefreshTokenSuccessAction, RetrieveAuthMethodsAction, RetrieveAuthMethodsErrorAction, RetrieveAuthMethodsSuccessAction
} from './auth.actions';
import { authMethodsMock, AuthServiceStub } from '../../shared/testing/auth-service-stub';
import { AuthService } from './auth.service';
import { AuthState } from './auth.reducer';

import { EPersonMock } from '../../shared/testing/eperson-mock';
import { AuthStatus } from './models/auth-status.model';

describe('AuthEffects', () => {
  let authEffects: AuthEffects;
  let actions: Observable<any>;
  let authServiceStub;
  const store: Store<AuthState> = jasmine.createSpyObj('store', {
    /* tslint:disable:no-empty */
    dispatch: {},
    /* tslint:enable:no-empty */
    select: observableOf(true)
  });
  let token;

  function init() {
    authServiceStub = new AuthServiceStub();
    token = authServiceStub.getToken();
  }
  beforeEach(() => {
    init();
    TestBed.configureTestingModule({
      providers: [
        AuthEffects,
        {provide: AuthService, useValue: authServiceStub},
        {provide: Store, useValue: store},
        provideMockActions(() => actions),
        // other providers
      ],
    });

    authEffects = TestBed.get(AuthEffects);
  });

  describe('authenticate$', () => {
    describe('when credentials are correct', () => {
      it('should return a AUTHENTICATE_SUCCESS action in response to a AUTHENTICATE action', () => {
        actions = hot('--a-', {
          a: {
            type: AuthActionTypes.AUTHENTICATE,
            payload: {email: 'user', password: 'password'}
          }
        });

        const expected = cold('--b-', {b: new AuthenticationSuccessAction(token)});

        expect(authEffects.authenticate$).toBeObservable(expected);
      });
    });

    describe('when credentials are wrong', () => {
      it('should return a AUTHENTICATE_ERROR action in response to a AUTHENTICATE action', () => {
        spyOn((authEffects as any).authService, 'authenticate').and.returnValue(observableThrow(new Error('Message Error test')));

        actions = hot('--a-', {
          a: {
            type: AuthActionTypes.AUTHENTICATE,
            payload: {email: 'user', password: 'wrongpassword'}
          }
        });

        const expected = cold('--b-', {b: new AuthenticationErrorAction(new Error('Message Error test'))});

        expect(authEffects.authenticate$).toBeObservable(expected);
      });
    });
  });

  describe('authenticateSuccess$', () => {

    it('should return a AUTHENTICATED action in response to a AUTHENTICATE_SUCCESS action', () => {
      actions = hot('--a-', {a: {type: AuthActionTypes.AUTHENTICATE_SUCCESS, payload: token}});

      const expected = cold('--b-', {b: new AuthenticatedAction(token)});

      expect(authEffects.authenticateSuccess$).toBeObservable(expected);
    });
  });

  describe('authenticated$', () => {

    describe('when token is valid', () => {
      it('should return a AUTHENTICATED_SUCCESS action in response to a AUTHENTICATED action', () => {
        actions = hot('--a-', {a: {type: AuthActionTypes.AUTHENTICATED, payload: token}});

        const expected = cold('--b-', {b: new AuthenticatedSuccessAction(true, token, EPersonMock)});

        expect(authEffects.authenticated$).toBeObservable(expected);
      });
    });

    describe('when token is not valid', () => {
      it('should return a AUTHENTICATED_ERROR action in response to a AUTHENTICATED action', () => {
        spyOn((authEffects as any).authService, 'authenticatedUser').and.returnValue(observableThrow(new Error('Message Error test')));

        actions = hot('--a-', {a: {type: AuthActionTypes.AUTHENTICATED, payload: token}});

        const expected = cold('--b-', {b: new AuthenticatedErrorAction(new Error('Message Error test'))});

        expect(authEffects.authenticated$).toBeObservable(expected);
      });
    });
  });

  describe('checkToken$', () => {

    describe('when check token succeeded', () => {
      it('should return a AUTHENTICATED action in response to a CHECK_AUTHENTICATION_TOKEN action', () => {

        actions = hot('--a-', {a: {type: AuthActionTypes.CHECK_AUTHENTICATION_TOKEN}});

        const expected = cold('--b-', {b: new AuthenticatedAction(token)});

        expect(authEffects.checkToken$).toBeObservable(expected);
      });
    });

    describe('when check token failed', () => {
      it('should return a CHECK_AUTHENTICATION_TOKEN_ERROR action in response to a CHECK_AUTHENTICATION_TOKEN action', () => {
        spyOn((authEffects as any).authService, 'hasValidAuthenticationToken').and.returnValue(observableThrow(''));

        actions = hot('--a-', {a: {type: AuthActionTypes.CHECK_AUTHENTICATION_TOKEN, payload: token}});

        const expected = cold('--b-', {b: new CheckAuthenticationTokenCookieAction()});

        expect(authEffects.checkToken$).toBeObservable(expected);
      });
    })
  });

  describe('checkTokenCookie$', () => {

    describe('when check token succeeded', () => {
      it('should return a AUTHENTICATED action in response to a CHECK_AUTHENTICATION_TOKEN_COOKIE action when authenticated is true', () => {
        spyOn((authEffects as any).authService, 'checkAuthenticationCookie').and.returnValue(
          observableOf(
            { authenticated: true,
                  token
            })
        );
        actions = hot('--a-', {a: {type: AuthActionTypes.CHECK_AUTHENTICATION_TOKEN_COOKIE}});

        const expected = cold('--b-', {b: new AuthenticatedAction(token)});

        expect(authEffects.checkTokenCookie$).toBeObservable(expected);
      });

      it('should return a RETRIEVE_AUTH_METHODS action in response to a CHECK_AUTHENTICATION_TOKEN_COOKIE action when authenticated is false', () => {
        spyOn((authEffects as any).authService, 'checkAuthenticationCookie').and.returnValue(
          observableOf(
            { authenticated: false })
        );
        actions = hot('--a-', {a: {type: AuthActionTypes.CHECK_AUTHENTICATION_TOKEN_COOKIE}});

        const expected = cold('--b-', {b: new RetrieveAuthMethodsAction({ authenticated: false } as AuthStatus)});

        expect(authEffects.checkTokenCookie$).toBeObservable(expected);
      });
    });

    describe('when check token failed', () => {
      it('should return a AUTHENTICATED_ERROR action in response to a CHECK_AUTHENTICATION_TOKEN_COOKIE action', () => {
        spyOn((authEffects as any).authService, 'checkAuthenticationCookie').and.returnValue(observableThrow(new Error('Message Error test')));

        actions = hot('--a-', {a: {type: AuthActionTypes.CHECK_AUTHENTICATION_TOKEN_COOKIE, payload: token}});

        const expected = cold('--b-', {b: new AuthenticatedErrorAction(new Error('Message Error test'))});

        expect(authEffects.checkTokenCookie$).toBeObservable(expected);
      });
    })
  });

  describe('refreshToken$', () => {

    describe('when refresh token succeeded', () => {
      it('should return a REFRESH_TOKEN_SUCCESS action in response to a REFRESH_TOKEN action', () => {

        actions = hot('--a-', {a: {type: AuthActionTypes.REFRESH_TOKEN}});

        const expected = cold('--b-', {b: new RefreshTokenSuccessAction(token)});

        expect(authEffects.refreshToken$).toBeObservable(expected);
      });
    });

    describe('when refresh token failed', () => {
      it('should return a REFRESH_TOKEN_ERROR action in response to a REFRESH_TOKEN action', () => {
        spyOn((authEffects as any).authService, 'refreshAuthenticationToken').and.returnValue(observableThrow(''));

        actions = hot('--a-', {a: {type: AuthActionTypes.REFRESH_TOKEN, payload: token}});

        const expected = cold('--b-', {b: new RefreshTokenErrorAction()});

        expect(authEffects.refreshToken$).toBeObservable(expected);
      });
    })
  });

  describe('logOut$', () => {

    describe('when refresh token succeeded', () => {
      it('should return a LOG_OUT_SUCCESS action in response to a LOG_OUT action', () => {

        actions = hot('--a-', {a: {type: AuthActionTypes.LOG_OUT}});

        const expected = cold('--b-', {b: new LogOutSuccessAction()});

        expect(authEffects.logOut$).toBeObservable(expected);
      });
    });

    describe('when refresh token failed', () => {
      it('should return a REFRESH_TOKEN_ERROR action in response to a LOG_OUT action', () => {
        spyOn((authEffects as any).authService, 'logout').and.returnValue(observableThrow(new Error('Message Error test')));

        actions = hot('--a-', {a: {type: AuthActionTypes.LOG_OUT, payload: token}});

        const expected = cold('--b-', {b: new LogOutErrorAction(new Error('Message Error test'))});

        expect(authEffects.logOut$).toBeObservable(expected);
      });
    })
  });

  describe('retrieveMethods$', () => {

    describe('when retrieve authentication methods succeeded', () => {
      it('should return a RETRIEVE_AUTH_METHODS_SUCCESS action in response to a RETRIEVE_AUTH_METHODS action', () => {

        actions = hot('--a-', {a: {type: AuthActionTypes.RETRIEVE_AUTH_METHODS}});

        const expected = cold('--b-', {b: new RetrieveAuthMethodsSuccessAction(authMethodsMock)});

        expect(authEffects.retrieveMethods$).toBeObservable(expected);
      });
    });

    describe('when retrieve authentication methods failed', () => {
      it('should return a RETRIEVE_AUTH_METHODS_ERROR action in response to a RETRIEVE_AUTH_METHODS action', () => {
        spyOn((authEffects as any).authService, 'retrieveAuthMethods').and.returnValue(observableThrow(''));

        actions = hot('--a-', {a: {type: AuthActionTypes.RETRIEVE_AUTH_METHODS}});

        const expected = cold('--b-', {b: new RetrieveAuthMethodsErrorAction()});

        expect(authEffects.retrieveMethods$).toBeObservable(expected);
      });
    })
  });
});