/*
 * Copyright 2017 ThoughtWorks, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.thoughtworks.go.server.security.providers;

import com.thoughtworks.go.server.security.GoAuthority;
import com.thoughtworks.go.server.service.UserService;
import com.thoughtworks.go.server.util.UserHelper;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.springframework.security.Authentication;
import org.springframework.security.GrantedAuthority;
import org.springframework.security.providers.AuthenticationProvider;
import org.springframework.security.providers.UsernamePasswordAuthenticationToken;
import org.springframework.security.userdetails.User;

import static org.hamcrest.core.Is.is;
import static org.hamcrest.core.IsNull.nullValue;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.*;

public class GoAuthenticationProviderTest {
    private UserService userService;
    private GoAuthenticationProvider enforcementProvider;
    private UsernamePasswordAuthenticationToken auth;
    private Authentication resultantAuthorization;
    private AuthenticationProvider underlyingProvider;

    @Before
    public void setUp() throws Exception {
        userService = mock(UserService.class);
        underlyingProvider = mock(AuthenticationProvider.class);
        enforcementProvider = new GoAuthenticationProvider(userService, underlyingProvider);
        auth = new UsernamePasswordAuthenticationToken(new User("user", "pass", true, true, true, true, new GrantedAuthority[]{}), "credentials");
        resultantAuthorization = new UsernamePasswordAuthenticationToken(new User("user-authenticated", "pass", true, true, true, true,
                new GrantedAuthority[]{GoAuthority.ROLE_GROUP_SUPERVISOR.asAuthority()}), "credentials");
        when(underlyingProvider.authenticate(auth)).thenReturn(resultantAuthorization);
    }

    @After
    public void tearDown() {
        verifyNoMoreInteractions(userService);
    }

    @Test
    public void shouldEnforceLicenseLimit() throws Exception {
        Authentication authentication = enforcementProvider.authenticate(auth);
        assertThat(authentication, is(resultantAuthorization));
        verify(userService).addUserIfDoesNotExist(UserHelper.getUser(resultantAuthorization));
    }

    @Test
    public void shouldNotFailWhenUnderlyingProviderDoesNotAuthenticate() throws Exception {
        when(underlyingProvider.authenticate(auth)).thenReturn(null);
        Authentication authentication = enforcementProvider.authenticate(auth);
        assertThat(authentication, is(nullValue()));
    }
}