/*
 * Copyright 2015 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.domain.GoVersion;
import com.thoughtworks.go.domain.VersionInfo;
import com.thoughtworks.go.server.dao.VersionInfoDao;
import com.thoughtworks.go.server.util.ServerVersion;
import org.junit.Before;
import org.junit.Test;

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

public class ServerVersionInfoBuilderTest {
    private ServerVersion serverVersion;
    private VersionInfoDao versionInfoDao;
    private ServerVersionInfoBuilder builder;

    @Before
    public void setUp() {
        serverVersion = mock(ServerVersion.class);
        versionInfoDao = mock(VersionInfoDao.class);
        builder = new ServerVersionInfoBuilder(versionInfoDao, serverVersion);
    }

    @Test
    public void shouldGetVersionInfoForGOServerIfExists(){
        VersionInfo goVersionInfo = new VersionInfo("go_server", new GoVersion("1.2.3-1"));
        when(versionInfoDao.findByComponentName("go_server")).thenReturn(goVersionInfo);
        when(serverVersion.version()).thenReturn("1.2.3-1");

        VersionInfo versionInfo = builder.getServerVersionInfo();

        assertThat(versionInfo.getComponentName(), is(goVersionInfo.getComponentName()));
        assertThat(versionInfo.getInstalledVersion(), is(goVersionInfo.getInstalledVersion()));
    }

    @Test
    public void shouldCreateVersionInfoForGOServerIfDoesNotExist(){
        when(versionInfoDao.findByComponentName("go_server")).thenReturn(null);
        when(serverVersion.version()).thenReturn("1.2.3-1");

        VersionInfo versionInfo = builder.getServerVersionInfo();

        verify(versionInfoDao).saveOrUpdate(isA(VersionInfo.class));
        assertThat(versionInfo.getComponentName(), is("go_server"));
        assertThat(versionInfo.getInstalledVersion().toString(), is("1.2.3-1"));
    }

    @Test
    public void shouldUpdateTheVersionInfoIfInstalledVersionHasChanged(){
        VersionInfo goVersionInfo = new VersionInfo("go_server", new GoVersion("1.2.3-1"));
        when(versionInfoDao.findByComponentName("go_server")).thenReturn(goVersionInfo);
        when(serverVersion.version()).thenReturn("5.6.7-8");

        VersionInfo versionInfo = builder.getServerVersionInfo();

        verify(versionInfoDao).saveOrUpdate(isA(VersionInfo.class));
        assertThat(versionInfo.getComponentName(), is(goVersionInfo.getComponentName()));
        assertThat(versionInfo.getInstalledVersion().toString(), is("5.6.7-8"));
    }

    @Test
    public void shouldNotCreateAVersionInfoOnDevelopmentServer(){
        when(versionInfoDao.findByComponentName("go_server")).thenReturn(null);
        when(serverVersion.version()).thenReturn("N/A");

        VersionInfo versionInfo = builder.getServerVersionInfo();

        verify(versionInfoDao, never()).saveOrUpdate(isA(VersionInfo.class));
        assertNull(versionInfo);
    }

    @Test
    public void shouldNotUpdateTheVersionInfoIfUnableToParseTheInstalledVersion(){
        VersionInfo goVersionInfo = new VersionInfo("go_server", new GoVersion("1.2.3-1"));
        when(versionInfoDao.findByComponentName("go_server")).thenReturn(goVersionInfo);
        when(serverVersion.version()).thenReturn("N/A");

        VersionInfo versionInfo = builder.getServerVersionInfo();

        verify(versionInfoDao, never()).saveOrUpdate(isA(VersionInfo.class));
        assertThat(versionInfo.getComponentName(), is(goVersionInfo.getComponentName()));
        assertThat(versionInfo.getInstalledVersion(), is(goVersionInfo.getInstalledVersion()));
    }
}