describe('Form reducer factory', () => {

    const config: FormReducerOptions<ExtendedFormState> = {
        show: 'show',
        hide: 'hide',
        toggle: 'toggle',
        request: 'request',
        success: 'success',
        failure: 'failure',
        extras: [{
            types: 'setExtraProp',
            func: (state, action) => assign(state, { extraProp: (action as any).payload })
        }],
        successMessage: 'success!'
    };

    interface ExtendedFormState extends FormState {
        extraProp: any;
    }

    const reducer = formReducer<ExtendedFormState>(config);

    let oldState: ExtendedFormState;

    beforeEach(() => {
        oldState = assignDeep(FormStates.Default as any, { extraProp: 'hello' });
    });

    shouldNotAlterStateOnUnknownAction(reducer);

    it('applies the form visibility WHEN show is called', () => {
        oldState.showForm = false;
        const newState = reducer(oldState, action(config.show as string));
        expect(newState).toEqual(assign(oldState, { showForm: true }));
    });

    it('applies the form visibility WHEN hide is called', () => {
        oldState.showForm = true;
        const newState = reducer(oldState, action(config.hide as string));
        expect(newState).toEqual(assign(oldState, { showForm: false }));
    });

    it('applies the form visibility WHEN toggle is called', () => {
        oldState.showForm = false;
        let newState = reducer(oldState, action(config.toggle as string));
        expect(newState).toEqual(assign(oldState, { showForm: true }));
        newState = reducer(newState, action(config.toggle as string));
        expect(newState).toEqual(assign(oldState, { showForm: false }));
    });

    it('applies the requesting state WHEN request is called', () => {
        const newState = reducer(oldState, action(config.request as string));
        expect(newState).toEqual(assign(oldState, FormStates.Requesting));
    });

    it('applies the success state WHEN success is called', () => {
        const newState = reducer(oldState, action(config.success as string));
        expect(newState).toEqual(assign(oldState, FormStates.Success(config.successMessage)));
    });

    it('applies the failure state WHEN failure is called', () => {
        const newState = reducer(oldState, action(config.failure as string));
        expect(newState).toEqual(assign(oldState, FormStates.Failure(getErrorMessage(undefined))));
    });

    it('Runs custom cases WHEN they are passed', () => {
        const newState = reducer(oldState, action('setExtraProp', '1234'));
        expect(newState).toEqual(assign(oldState, { extraProp: '1234' }));
    });
});

export function resendEmailVerificationReducer(state: FormState,  action: Action) {
    return formReducer({
        request: ResendEmailVerificationActionTypes.Resend,
        failure: ResendEmailVerificationActionTypes.Failure,
        success: ResendEmailVerificationActionTypes.Success,
        successMessage: Messages.ApiResponse.SendVerificationEmailSuccess,
    })(state, action);
}

export function updateEmailReducer(state: FormState, action: Action) {
    return formReducer({
        toggle: UpdateEmailActionTypes.ToggleForm,
        request: UpdateEmailActionTypes.Update,
        success: UpdateEmailActionTypes.Success,
        failure: UpdateEmailActionTypes.Failure,
        successMessage: Messages.ApiResponse.UpdateEmailSuccess,
    })(state, action);
}

export function resetPasswordFormReducer(
    state: FormState,
    action: Action
): FormState {
    return formReducer({
        request: ResetPasswordFormActionTypes.Reset,
        failure: ResetPasswordFormActionTypes.Failure,
        success: ResetPasswordFormActionTypes.Success,
    })(state, action);
}

export function logInReducer(
    state: FormState,
    action: LogInActions.LogInAction
): FormState {
    return formReducer({
        show: LogInActionTypes.ShowModal,
        hide: LogInActionTypes.HideModal,
        request: LogInActionTypes.LogIn,
        success: LogInActionTypes.Success,
        failure: LogInActionTypes.Failure,
    })(state, action);
};

export function updatePasswordReducer(
    state: FormState,
    action: Action
): FormState {
    return formReducer({
        toggle: UpdatePasswordActionTypes.ToggleForm,
        request: UpdatePasswordActionTypes.Update,
        failure: UpdatePasswordActionTypes.Failure,
        success: UpdatePasswordActionTypes.Success,
        successMessage: Messages.ApiResponse.UpdatePasswordSuccess,
        failureMessage: Messages.ApiResponse.ServerError,
    })(state, action);
}

export function signUpFormReducer(state: FormState, action: Action): FormState {
    return formReducer({
        request: SignUpFormActionTypes.SignUp,
        failure: SignUpFormActionTypes.Failure,
    })(state, action);
}