package org.litesoft.util;

import org.litesoft.commonfoundation.base.*;
import org.litesoft.commonfoundation.typeutils.*;
import org.litesoft.server.file.*;
import org.litesoft.server.util.*;

import java.io.*;

public class JavaNewLineNormalizer implements DirectoriesDepthFirst.Visitor {
    public static void main( String[] args )
            throws Exception {
        new DirectoriesDepthFirst( new JavaNewLineNormalizer( FileUtils.createFileNameFilter( "", ".java" ) ) )
                .process( new File( Directories.currentWorking() ) );
    }

    private FilenameFilter mFileNameFilter;

    private JavaNewLineNormalizer( FilenameFilter pFileNameFilter ) {

        mFileNameFilter = pFileNameFilter;
    }

    @Override
    public void process( File pDirectory )
            throws IOException {
        String[] zFileNames = pDirectory.list( mFileNameFilter );
        if ( Currently.isNotNullOrEmpty( zFileNames ) ) {
            System.out.println( "  " + pDirectory + ":" );
            for ( String zFileName : zFileNames ) {
                process( pDirectory, zFileName );
            }
        }
    }

    private void process( File pDirectory, String pFileName )
            throws UnsupportedEncodingException {
        System.out.print( "    " + pFileName );
        File zFile = new File( pDirectory, pFileName );
        byte[] zBytes = FileUtils.loadTextFileAsString( zFile ).getBytes( IOUtils.UTF_8 );
        FileUtils.Change zChange = FileUtils.storeFile( zFile, Lists.of( zBytes ) );
        System.out.println( (zChange == null) ? "" : (" ---------------> " + zChange) );
    }
}