package org.apache.maven.plugin.changelog;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import junit.framework.TestCase;
import org.apache.maven.scm.command.changelog.ChangeLogSet;
import org.apache.maven.scm.ChangeSet;
import org.apache.maven.scm.ChangeFile;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.List;
import java.util.Calendar;

/**
 * @author Edwin Punzalan
 * @version $Id$
 */
public class ChangeLogTest
    extends TestCase
{
    public void testReadFile()
        throws Exception
    {
        List changedLogs = readChangeLogXml( "min-changelog.xml" );

        assertNotNull( "Test changedSets were parsed", changedLogs );

        assertEquals( "Test number of changelog entries", 2, changedLogs.size() );

        ChangeLogSet changelogSets = (ChangeLogSet) changedLogs.get( 0 );

        assertEquals( "Test number of revisions on changelog 1", 2, changelogSets.getChangeSets().size() );

        ChangeSet changeSet = (ChangeSet) changelogSets.getChangeSets().get( 0 );


        Calendar cal = Calendar.getInstance(); // new cal with default TZ

        cal.set( 1977, 7, 6, 5, 30, 0); // expected date from min-changelog.xml

        cal.set( Calendar.MILLISECOND, 0);


        assertEquals( "Test changelog 1 set 1 date/time", cal.getTime().getTime(), changeSet.getDate().getTime() );

        assertEquals( "Test changelog 1 set 1 author", "Edwin Punzalan", changeSet.getAuthor() );

        assertEquals( "Test changelog 1 set 1 msg", "First commit msg", changeSet.getComment() );

        assertEquals( "Test changelog 1 set 1 files", 1, changeSet.getFiles().size() );

        ChangeFile changeFile = (ChangeFile) changeSet.getFiles().get( 0 );

        assertEquals( "Test changelog 1 set 1 file 1 filename", "/path/to/file.extension", changeFile.getName() );

        assertEquals( "Test changelog 1 set 1 file 1 revision", "1", changeFile.getRevision() );


        changeSet = (ChangeSet) changelogSets.getChangeSets().get( 1 );

        cal.set( 2005, 1, 24, 21, 30, 0 );

        assertEquals( "Test changelog 1 set 2 date/time", cal.getTime().getTime(), changeSet.getDate().getTime() );

        assertEquals( "Test changelog 1 set 2 author", "Edwin Punzalan", changeSet.getAuthor() );

        assertEquals( "Test changelog 1 set 2 msg", "Second commit msg", changeSet.getComment() );

        assertEquals( "Test changelog 1 set 2 files", 2, changeSet.getFiles().size() );

        changeFile = (ChangeFile) changeSet.getFiles().get( 0 );

        assertEquals( "Test changelog 1 set 2 file 1 filename", "/path/to/file.extension", changeFile.getName() );

        assertEquals( "Test changelog 1 set 2 file 1 revision", "2", changeFile.getRevision() );

        changeFile = (ChangeFile) changeSet.getFiles().get( 1 );

        assertEquals( "Test changelog 1 set 2 file 2 filename", "/path/to/file2.extension", changeFile.getName() );

        assertEquals( "Test changelog 1 set 2 file 2 revision", "2", changeFile.getRevision() );


        changelogSets = (ChangeLogSet) changedLogs.get( 1 );

        assertEquals( "Test number of revisions on changelog 2", 2, changelogSets.getChangeSets().size() );

        changeSet = (ChangeSet) changelogSets.getChangeSets().get( 0 );

        cal.set( 2005, 1, 25, 22, 45, 0 );

        assertEquals( "Test changelog 2 set 1 date/time", cal.getTime().getTime(), changeSet.getDate().getTime() );

        assertEquals( "Test changelog 2 set 1 author", "Keogh Edrich Punzalan", changeSet.getAuthor() );

        assertEquals( "Test changelog 2 set 1 msg", "Third commit msg", changeSet.getComment() );

        assertEquals( "Test changelog 2 set 1 files", 1, changeSet.getFiles().size() );

        changeFile = (ChangeFile) changeSet.getFiles().get( 0 );

        assertEquals( "Test changelog 2 set 1 file 1 filename", "/path/to/file.extension", changeFile.getName() );

        assertEquals( "Test changelog 2 set 1 file 1 revision", "3", changeFile.getRevision() );


        changeSet = (ChangeSet) changelogSets.getChangeSets().get( 1 );

        cal.set( 2100, 1, 25, 5, 30, 0 );

        assertEquals( "Test changelog 2 set 2 date/time", cal.getTime().getTime(), changeSet.getDate().getTime() );

        assertEquals( "Test changelog 2 set 2 author", "Keogh Edrich Punzalan", changeSet.getAuthor() );

        assertEquals( "Test changelog 2 set 2 msg", "Last commit msg", changeSet.getComment() );

        assertEquals( "Test changelog 2 set 2 files", 2, changeSet.getFiles().size() );

        changeFile = (ChangeFile) changeSet.getFiles().get( 0 );

        assertEquals( "Test changelog 2 set 2 file 1 filename", "/path/to/file.extension", changeFile.getName() );

        assertEquals( "Test changelog 2 set 2 file 1 revision", "4", changeFile.getRevision() );

        changeFile = (ChangeFile) changeSet.getFiles().get( 1 );

        assertEquals( "Test changelog 2 set 2 file 2 filename", "/path/to/file2.extension", changeFile.getName() );

        assertEquals( "Test changelog 2 set 2 file 2 revision", "4", changeFile.getRevision() );
    }

    private List readChangeLogXml( String filename )
        throws Exception
    {
        File inputFile = new File( getBasedir(), "src/test/changelog-xml/" + filename );
        InputStream in = new FileInputStream( inputFile );

        return ChangeLog.loadChangedSets( in );
    }

    private String getBasedir()
    {
        return System.getProperty( "basedir" );
    }
}