/*
 * Copyright (c) 2015 Eike Stepper (Berlin, Germany) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Eike Stepper - initial API and implementation
 */
package org.eclipse.oomph.extractor.lib;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

/**
 * @author Eike Stepper
 */
public final class BINDescriptor
{
  private static final String CHARSET = "UTF-8";

  private static final String NL = "\n";

  private final int format;

  private final JREData jre;

  private final int jdk;

  private final String launcherPath;

  private final String iniPath;

  private final String productName;

  private final String productURI;

  private final String imageURI;

  public BINDescriptor(InputStream in) throws IOException
  {
    BufferedReader reader = new BufferedReader(new InputStreamReader(in, CHARSET));

    format = readInt(reader);

    int major = readInt(reader);
    int minor = readInt(reader);
    int micro = readInt(reader);
    int bitness = readInt(reader);

    jre = new JREData(major, minor, micro, bitness);
    jdk = readInt(reader);

    launcherPath = reader.readLine();
    iniPath = reader.readLine();
    productName = reader.readLine();
    productURI = reader.readLine();
    imageURI = reader.readLine();
  }

  public int getFormat()
  {
    return format;
  }

  public JREData getJRE()
  {
    return jre;
  }

  public int getJDK()
  {
    return jdk;
  }

  public String getLauncherPath()
  {
    return launcherPath;
  }

  public String getIniPath()
  {
    return iniPath;
  }

  public String getProductName()
  {
    return productName;
  }

  public String getProductURI()
  {
    return productURI;
  }

  public String getImageURI()
  {
    return imageURI;
  }

  public void write(File file) throws IOException
  {
    FileOutputStream out = new FileOutputStream(file);

    try
    {
      BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out, CHARSET));
      writeInt(writer, format);

      writeInt(writer, jre.getMajor());
      writeInt(writer, jre.getMinor());
      writeInt(writer, jre.getMicro());
      writeInt(writer, jre.getBitness());
      writeInt(writer, jdk);

      writeString(writer, launcherPath);
      writeString(writer, iniPath);
      writeString(writer, productName);
      writeString(writer, productURI);
      writeString(writer, imageURI);

      writer.flush();
    }
    finally
    {
      IO.close(out);
    }
  }

  private static int readInt(BufferedReader reader) throws IOException
  {
    return Integer.parseInt(reader.readLine());
  }

  private static void writeInt(BufferedWriter writer, int value) throws IOException
  {
    writer.write(Integer.toString(value));
    writer.write(NL);
  }

  private void writeString(BufferedWriter writer, String value) throws IOException
  {
    writer.write(value);
    writer.write(NL);
  }
}