ImportManager.java

/*
 * Copyright (c) 2005 (Mike) Maurice Kienenberger (mkienenb@gmail.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package org.gamenet.application.mm8leveleditor.lod;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.List;

import org.gamenet.util.MonitoredTaskThread;

import com.mmbreakfast.unlod.lod.LodFile;

public class ImportManager
{
    private ProgressDisplayer progressDisplayer = null;
    private MonitoredTaskThread importThread = null;
    
    public ImportManager(ProgressDisplayer progressDisplayer)
    {
        super();
        
        this.progressDisplayer = progressDisplayer;
    }

    public class ImportTask implements Runnable 
    {
        private LodFile oldLodFile = null;
        private File newLodFileToCreate = null;
        private List filesToImportList = null;
        private LodResource resourceToImport = null;
        
        public ImportTask(LodFile oldLodFile, File newLodFileToCreate, List filesToImportList)
        {
            this.oldLodFile = oldLodFile;
            this.newLodFileToCreate = newLodFileToCreate;
            this.filesToImportList = filesToImportList;
        }

        public ImportTask(LodFile oldLodFile, File newLodFileToCreate, LodResource resourceToImport)
        {
            this.oldLodFile = oldLodFile;
            this.newLodFileToCreate = newLodFileToCreate;
            this.resourceToImport = resourceToImport;
        }

        public void run()
        {
            String error = importResources(oldLodFile, newLodFileToCreate, filesToImportList, resourceToImport);
            if (null != error)
            {
                throw new RuntimeException(error);
            }
        }
    }
    
    /**
     * @param oldLodFile original lod file
     * @param newLodFileToCreate new lod file based on old lod file + files to import.
     * @param filesToImportList list of File objects to update or add to new lod file.
     */
    public void importAndMonitorResources(LodFile oldLodFile, File newLodFileToCreate, List filesToImportList)
    {
        ImportTask importTask = new ImportTask(oldLodFile, newLodFileToCreate, filesToImportList);
        importThread = new MonitoredTaskThread(progressDisplayer, "Please wait.\nImporting...", "startup", importTask);
        importThread.start();
    }

    /**
     * @param oldLodFile original lod file
     * @param newLodFileToCreate new lod file based on old lod file + files to import.
     * @param filesToImportList list of File objects to update or add to new lod file.
     */
    public void importAndMonitorResource(LodFile oldLodFile, File newLodFileToCreate, LodResource resourceToReplace)
    {
        ImportTask importTask = new ImportTask(oldLodFile, newLodFileToCreate, resourceToReplace);
        importThread = new MonitoredTaskThread(progressDisplayer, "Please wait.\nImporting...", "startup", importTask);
        importThread.start();
    }


    public class UpdateTask implements Runnable 
    {
        private LodFile oldLodFile = null;
        private LodResource resourceToImport = null;
        
        public UpdateTask(LodFile oldLodFile, LodResource resourceToImport)
        {
            this.oldLodFile = oldLodFile;
            this.resourceToImport = resourceToImport;
        }

        public void run()
        {
            String error = updateResource(oldLodFile, resourceToImport);
            if (null != error)
            {
                throw new RuntimeException(error);
            }
        }
    }
    
    public void updateAndMonitorResource(LodFile oldLodFile, LodResource resourceToReplace)
    {
        UpdateTask updateTask = new UpdateTask(oldLodFile, resourceToReplace);
        importThread = new MonitoredTaskThread(progressDisplayer, "Please wait.\nUpdating...", "startup", updateTask);
        importThread.start();
    }

    /**
     * @param oldLodFile original lod file
     * @param filesToImportList list of File objects to update or add to new lod file.
     */
    protected String updateResource(LodFile oldLodFile, LodResource resourceToImport)
    {
        RandomAccessFile randomAccessFile = null;
        try
        {
            randomAccessFile = new RandomAccessFile(oldLodFile.getFile(), "rw");
        }
        catch (FileNotFoundException exception)
        {
            exception.printStackTrace();
            return "Unable to update file '" + oldLodFile.getFile().getAbsolutePath() + "': File not found -- " + exception.getMessage();
        }
        
        try
        {
            oldLodFile.updateByAppendingData(importThread, randomAccessFile, resourceToImport);
        }
        catch (IOException exception)
        {
            exception.printStackTrace();
            return "Unable to update file '" + oldLodFile.getFile().getAbsolutePath() + "': IOException -- " + exception.getMessage();
        }
        catch (InterruptedException exception)
        {
            return "Cancelled by User.";
        }
        finally
        {
            try
            {
                randomAccessFile.close();
            }
            catch (IOException e)
            {
                // ignore other than putting out stacktrace
                e.printStackTrace();
            }
        }
        
        return null;
    }
    
    /**
     * @param oldLodFile original lod file
     * @param newLodFileToCreate new lod file based on old lod file + files to import.
     * @param filesToImportList list of File objects to update or add to new lod file.
     */
    protected String importResources(LodFile oldLodFile, File newLodFileToCreate, List filesToImportList, LodResource resourceToImport)
    {
        RandomAccessFile randomAccessFile = null;
        try
        {
            randomAccessFile = new RandomAccessFile(newLodFileToCreate, "rw");
        }
        catch (FileNotFoundException exception)
        {
            exception.printStackTrace();
            return "Unable to create file '" + newLodFileToCreate.getAbsolutePath() + "': File not found -- " + exception.getMessage();
        }
        
        try
        {
            oldLodFile.write(importThread, randomAccessFile, filesToImportList, resourceToImport);
        }
        catch (IOException exception)
        {
            exception.printStackTrace();
            return "Unable to create file '" + newLodFileToCreate.getAbsolutePath() + "': IOException -- " + exception.getMessage();
        }
        catch (InterruptedException exception)
        {
            return "Cancelled by User.";
        }
        finally
        {
            try
            {
                randomAccessFile.close();
            }
            catch (IOException e)
            {
                // ignore other than putting out stacktrace
                e.printStackTrace();
            }
        }
        
        return null;
    }

}