SelfUpdate.java

package eu.thog92.launcher.updater;

import eu.thog92.launcher.util.OperatingSystem;
import javax.swing.*;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;
import java.util.ArrayList;
import java.util.List;

public class SelfUpdate
{
    public static void runUpdate(String currentPath, String temporaryUpdatePath)
    {
        List<String> arguments = new ArrayList<String>();

        String separator = System.getProperty("file.separator");
        String path = System.getProperty("java.home") + separator + "bin" + separator + "java";
        arguments.add(path);
        arguments.add("-cp");
        arguments.add(temporaryUpdatePath);
        arguments.add(SelfUpdate.class.getCanonicalName());
        arguments.add(currentPath);
        arguments.add(temporaryUpdatePath);

        System.out.println("Would update with: " + arguments);
        System.out.println("c: " + currentPath);
        System.out.println("n: " + temporaryUpdatePath);
        ProcessBuilder processBuilder = new ProcessBuilder();
        processBuilder.command(arguments);

        try
        {
            System.out.println("Run Updater");
            processBuilder.start();
        } catch (IOException e)
        {
            e.printStackTrace();
        }
        System.out.println("Exiting for update ...");
        System.exit(0);
    }

    public static void main(String[] args)
    {
        try
        {
            if (OperatingSystem.getCurrentPlatform() != OperatingSystem.LINUX || OperatingSystem.getCurrentPlatform() != OperatingSystem.OSX)
            {
                Thread.sleep(4000);
            }
        } catch (InterruptedException ignored)
        {
            JOptionPane.showMessageDialog(null, "Auto Updating Failed");
            ignored.printStackTrace();
        }
        String launcherPath = args[0];
        String temporaryUpdatePath = args[1];
        File launcher2 = new File(launcherPath);
        File temporaryUpdate = new File(temporaryUpdatePath);
        try
        {
            Files.copy(temporaryUpdate.toPath(), launcher2.toPath(), StandardCopyOption.REPLACE_EXISTING);
        } catch (IOException e)
        {
            JOptionPane.showMessageDialog(null, "Auto Updating Failed - " + e.getLocalizedMessage());
            e.printStackTrace();
        }

        List<String> arguments = new ArrayList<String>();

        String separator = System.getProperty("file.separator");
        String path = System.getProperty("java.home") + separator + "bin" + separator + "java";
        arguments.add(path);
        arguments.add("-jar");
        arguments.add(launcherPath);
        JOptionPane.showMessageDialog(null, "ReRun with args : " + arguments);
        ProcessBuilder processBuilder = new ProcessBuilder();
        processBuilder.command(arguments);
        try
        {
            processBuilder.start();
        } catch (IOException e)
        {
            JOptionPane.showMessageDialog(null, "Failed to start launcher process after updating. Relaunch your launcher.");
            e.printStackTrace();
        }
    }
}