/*
 * 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.service;

import com.thoughtworks.go.config.*;
import com.thoughtworks.go.helper.PipelineConfigMother;
import com.thoughtworks.go.server.dao.PipelineSqlMapDao;
import com.thoughtworks.go.server.domain.Username;
import com.thoughtworks.go.server.service.result.HttpLocalizedOperationResult;
import org.junit.Before;
import org.junit.Test;

import static javax.servlet.http.HttpServletResponse.*;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.*;

public class PipelinePauseServiceTest {
    private PipelineSqlMapDao pipelineDao;
    public PipelinePauseService pipelinePauseService;
    private GoConfigService goConfigService;
    private GoConfigDao goConfigDao;
    private SecurityService securityService;

    private static final String VALID_PIPELINE = "some-pipeline";
    private static final Username VALID_USER = new Username(new CaseInsensitiveString("admin"));
    private static final String INVALID_PIPELINE = "nonexistent-pipeline";
    private static final Username INVALID_USER = new Username(new CaseInsensitiveString("someone-who-not-operate"));

    @Before
    public void setUp() throws Exception {
        pipelineDao = mock(PipelineSqlMapDao.class);
        goConfigDao = mock(GoConfigDao.class);
        goConfigService = new GoConfigService(goConfigDao, null, (GoConfigMigration) null, null, null, null, null, null, null, null);
        securityService = mock(SecurityService.class);
        pipelinePauseService = new PipelinePauseService(pipelineDao, goConfigService, securityService);
    }

    private void setUpValidPipelineWithAuth() {
        Authorization authorization = new Authorization(new OperationConfig(new AdminUser(VALID_USER.getUsername())));
        CruiseConfig cruiseConfig = new BasicCruiseConfig(new BasicPipelineConfigs("my_group", authorization, PipelineConfigMother.pipelineConfig(VALID_PIPELINE)));
        when(goConfigDao.load()).thenReturn(cruiseConfig);
        when(securityService.hasOperatePermissionForGroup(eq(VALID_USER.getUsername()), any(String.class))).thenReturn(true);
    }

    private void setUpValidPipelineWithInvalidAuth() {
        Authorization authorization = new Authorization(new OperationConfig(new AdminUser(INVALID_USER.getUsername())));
        CruiseConfig cruiseConfig = new BasicCruiseConfig(new BasicPipelineConfigs("my_group", authorization, PipelineConfigMother.pipelineConfig(VALID_PIPELINE)));
        when(goConfigDao.load()).thenReturn(cruiseConfig);
        when(securityService.hasOperatePermissionForGroup(eq(INVALID_USER.getUsername()), any(String.class))).thenReturn(false);
    }

    @Test
    public void shouldPausePipeline() throws Exception {

        setUpValidPipelineWithAuth();

        HttpLocalizedOperationResult result = new HttpLocalizedOperationResult();

        pipelinePauseService.pause(VALID_PIPELINE, "cause", VALID_USER, result);
        verify(pipelineDao).pause(VALID_PIPELINE, "cause", VALID_USER.getUsername().toString());

        assertThat(result.isSuccessful(), is(true));
        assertThat(result.httpCode(), is(SC_OK));
    }


    @Test
    public void shouldUnPausePipeline() throws Exception {

        setUpValidPipelineWithAuth();

        HttpLocalizedOperationResult result = new HttpLocalizedOperationResult();

        pipelinePauseService.unpause(VALID_PIPELINE, VALID_USER, result);
        verify(pipelineDao).unpause(VALID_PIPELINE);

        assertThat(result.isSuccessful(), is(true));
        assertThat(result.httpCode(), is(SC_OK));
    }

    @Test
    public void shouldPopulateHttpResult404WhenPipelineIsNotFoundForPause() throws Exception {
        HttpLocalizedOperationResult result = new HttpLocalizedOperationResult();
        when(goConfigDao.load()).thenReturn(new BasicCruiseConfig());

        pipelinePauseService.pause(INVALID_PIPELINE, "cause", VALID_USER, result);

        assertThat(result.isSuccessful(), is(false));
        assertThat(result.httpCode(), is(SC_NOT_FOUND));
        verify(pipelineDao, never()).pause(INVALID_PIPELINE, "cause", "admin");
    }

    @Test
    public void shouldPopulateHttpResult404WhenPipelineIsNotFoundForUnpause() throws Exception {
        HttpLocalizedOperationResult result = new HttpLocalizedOperationResult();
        when(goConfigDao.load()).thenReturn(new BasicCruiseConfig());

        pipelinePauseService.unpause(INVALID_PIPELINE, VALID_USER, result);

        assertThat(result.isSuccessful(), is(false));
        assertThat(result.httpCode(), is(SC_NOT_FOUND));
        verify(pipelineDao, never()).unpause(INVALID_PIPELINE);
    }

    @Test
    public void shouldPopulateHttpResult500WhenPipelinePauseResultsInAnError() throws Exception {

        setUpValidPipelineWithAuth();

        HttpLocalizedOperationResult result = new HttpLocalizedOperationResult();

        doThrow(new RuntimeException("Failed to pause")).when(pipelineDao).pause(VALID_PIPELINE, "cause", VALID_USER.getUsername().toString());

        pipelinePauseService.pause(VALID_PIPELINE, "cause", VALID_USER, result);

        assertThat(result.isSuccessful(), is(false));
        assertThat(result.httpCode(), is(SC_INTERNAL_SERVER_ERROR));

        verify(pipelineDao).pause(VALID_PIPELINE, "cause", VALID_USER.getUsername().toString());
    }

    @Test
    public void shouldPopulateHttpResult500WhenPipelineUnPauseResultsInAnError() throws Exception {

        setUpValidPipelineWithAuth();

        HttpLocalizedOperationResult result = new HttpLocalizedOperationResult();

        doThrow(new RuntimeException("Failed to unpause")).when(pipelineDao).unpause(VALID_PIPELINE);

        pipelinePauseService.unpause(VALID_PIPELINE, VALID_USER, result);

        assertThat(result.isSuccessful(), is(false));
        assertThat(result.httpCode(), is(SC_INTERNAL_SERVER_ERROR));

        verify(pipelineDao).unpause(VALID_PIPELINE);
    }

    @Test
    public void shouldPopulateHttpResult401WhenPipelineIsNotAuthorizedForPausing() throws Exception {
        setUpValidPipelineWithInvalidAuth();

        HttpLocalizedOperationResult result = new HttpLocalizedOperationResult();

        pipelinePauseService.pause(VALID_PIPELINE, "cause", INVALID_USER, result);

        assertThat(result.isSuccessful(), is(false));
        assertThat(result.httpCode(), is(SC_UNAUTHORIZED));
        verify(pipelineDao, never()).pause(VALID_PIPELINE, "cause", "admin");
    }

    @Test
    public void shouldPopulateHttpResult401WhenPipelineIsNotAuthorizedForUnPausing() throws Exception {
        setUpValidPipelineWithInvalidAuth();

        HttpLocalizedOperationResult result = new HttpLocalizedOperationResult();

        pipelinePauseService.unpause(VALID_PIPELINE, INVALID_USER, result);

        assertThat(result.isSuccessful(), is(false));
        assertThat(result.httpCode(), is(SC_UNAUTHORIZED));
        verify(pipelineDao, never()).unpause(VALID_PIPELINE);
    }

    @Test
    public void shouldPausePipelineEvenWhenPauseCauseIsNull() throws Exception {
        setUpValidPipelineWithAuth();

        HttpLocalizedOperationResult result = new HttpLocalizedOperationResult();

        pipelinePauseService.pause(VALID_PIPELINE, null, VALID_USER, result);

        assertThat(result.isSuccessful(), is(true));
        assertThat(result.httpCode(), is(SC_OK));
        verify(pipelineDao).pause(VALID_PIPELINE, "", VALID_USER.getUsername().toString());
    }

}