Create migrate command to update the golden masters

src/main/java/de/retest/recheck/cli/subcommands/Migrate.java

@@ -0,0 +1,90 @@
+package de.retest.recheck.cli.subcommands;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import de.retest.recheck.configuration.ProjectRootFinderUtil;
+import de.retest.recheck.persistence.GoldenMasterProviderImpl;
+import de.retest.recheck.persistence.NoGoldenMasterFoundException;
+import de.retest.recheck.persistence.Persistence;
+import de.retest.recheck.persistence.PersistenceFactory;
+import de.retest.recheck.persistence.xml.util.StdXmlClassesProvider;
+import de.retest.recheck.ui.descriptors.SutState;
+import picocli.CommandLine.Command;
+import picocli.CommandLine.Option;
+import picocli.CommandLine.Parameters;
+
+@Command( name = "migrate", description = "Migrate all Golden Masters." )
+public class Migrate implements Runnable {
+
+	private static final String RECHECK_FOLDER = "\\src\\test\\resources\\retest\\recheck";
+	private static final String GOLDEN_MASTER_ABSOLUTE_PATH =
+			ProjectRootFinderUtil.getProjectRoot().get() + RECHECK_FOLDER;
+	private static final String GOLDEN_MASTER_EXTENTION = "retest.xml";
+	private static final Logger logger = LoggerFactory.getLogger( Migrate.class );
+
+	@Option( names = "--help", usageHelp = true, hidden = true )
+	private boolean displayHelp;
+
+	@Parameters( arity = "1", defaultValue = "", description = "Migrate Golden Master(s) from a specific path." )
+	private String goldenMasterPath;
+
+	private final GoldenMasterProviderImpl goldenMasterProvider =
+			new GoldenMasterProviderImpl( createSutStatePersistence() );
+
+	@Override
+	public void run() {
+		try {
+			migrateAllGoldenMasters( findAndConvertTheGoldenMasterPath() );
+		} catch ( final IOException e ) {
+			logger.error( "An error occurred while loading the test report.", e );
+		}
+	}
+
+	private void migrateAllGoldenMasters( final List<String> goldenMastersPaths ) {
+		if ( goldenMastersPaths.isEmpty() ) {
+			logger.warn( "There is no Golden Masters in this directory." );
+		}
+		goldenMastersPaths.stream().forEach( path -> {
+			File file;
+			try {
+				file = goldenMasterProvider.getGoldenMaster( path );
+				final SutState sutState = goldenMasterProvider.loadGoldenMaster( file );
+				goldenMasterProvider.saveGoldenMaster( file, sutState );
+			} catch ( final NoGoldenMasterFoundException e ) {
+				logger.error( "No Golden Master is found." );
+			}
+		} );
+	}
+
+	private List<String> findAndConvertTheGoldenMasterPath() throws IOException {
+		final Path goldenMasterRootPath = !goldenMasterPath.equals( "" ) ? Paths.get( goldenMasterPath )
+				: Paths.get( GOLDEN_MASTER_ABSOLUTE_PATH );
+		return Files.walk( goldenMasterRootPath )
+				.filter( goldenMaster -> goldenMaster.endsWith( GOLDEN_MASTER_EXTENTION ) )
+				.map( goldenMaster -> goldenMaster.toString()
+						.replace( ProjectRootFinderUtil.getProjectRoot().get().toString() + "\\", "" )
+						.replace( "\\retest.xml", "" ) )
+				.collect( Collectors.toList() );
+	}
+
+	private static Persistence<SutState> createSutStatePersistence() {
+		return new PersistenceFactory( new HashSet<>( Arrays.asList( StdXmlClassesProvider.getXmlDataClasses() ) ) )
+				.getPersistence();
+	}
+
+	boolean isDisplayHelp() {
+		return displayHelp;
+	}
+
+}