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/*
 * ZipStorage.java
 *
 * Created on January 30, 2004, 7:15 PM
 */

package com.sun.enterprise.backup;

import com.sun.enterprise.util.io.*;
import com.sun.enterprise.util.zip.*;

import java.io.*;

/** 
 * This class implements storing backups as zip files.  
 * @author Byron Nevins
 */
class ZipStorage {

    /**
     * @param req
     * @throws BackupException
     */    
    ZipStorage(BackupRequest req) throws BackupException {

        if(req == null)
            throw new BackupException("backup-res.NoBackupRequest",
                getClass().getName() + ".ctor");
        
        request = req;
    }
    
    /** 
     * Backups the files to a zip file.  
     * @throws BackupException if there were any errors writing the file.
     */
    void store() throws BackupException {

        File backupFileDir = null;
        if (request.configOnly) {
            backupFileDir = new File(request.domainDir, Constants.CONFIG_DIR) ;
        } else {
            backupFileDir = request.domainDir;
        }

        String zipName = FileUtils.safeGetCanonicalPath(request.backupFile);
        String domainDirName = FileUtils.safeGetCanonicalPath(backupFileDir);
        
        FileListerRelative lister = new FileListerRelative(backupFileDir);
        lister.keepEmptyDirectories(); // we want to restore any empty directories too!
        String[] files = lister.getFiles();
        
        LoggerHelper.fine("Writing " + zipName);
        
        try {

            ZipWriter writer = new ZipWriter(zipName, domainDirName, files);

            if(request.excludeDirs != null && request.excludeDirs.length > 0)
                writer.excludeDirs(request.excludeDirs);
            
            writer.safeWrite();
        }
        catch(ZipFileException zfe)  {
            throw new BackupException("backup-res.ZipBackupError", zfe, zipName);
        }
    }

    void write() throws BackupException  {
        
    }

    private    BackupRequest request;
}