Make BauSystem upgradeable form old BauSystem

Signed-off-by: yoyosource <yoyosource@nidido.de>

BauSystem_Main/src/de/steamwar/bausystem/BauSystem.java

@@ -28,9 +28,11 @@ import de.steamwar.bausystem.region.loader.Updater;
 import de.steamwar.message.Message;
 import lombok.Getter;
 import org.bukkit.Bukkit;
+import org.bukkit.World;
 import org.bukkit.event.Listener;
 import org.bukkit.plugin.java.JavaPlugin;
 
+import java.io.File;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.PrintStream;
@@ -46,8 +48,13 @@ public class BauSystem extends JavaPlugin implements Listener {
 
     public static final String PREFIX = ColorConfig.HIGHLIGHT + "BauSystem" + ColorConfig.OTHER + "» " + ColorConfig.BASE;
 
+    private World world;
+
     @Override
     public void onEnable() {
+        world = Bukkit.getWorlds().get(0);
+        fixBauSystem();
+
         // LOGGER
         fixLogging();
 
@@ -84,7 +91,7 @@ public class BauSystem extends JavaPlugin implements Listener {
             private StringBuilder current = new StringBuilder();
 
             @Override
-            public void write(int b) throws IOException {
+            public void write(int b) {
                 if (b == '\n') {
                     String logging = current.toString();
                     if (logging.contains("SLF4J")) {
@@ -99,4 +106,27 @@ public class BauSystem extends JavaPlugin implements Listener {
             }
         }));
     }
+
+    private void fixBauSystem() {
+        if (!new File(world.getWorldFolder(),"prototypes.yapion").exists()) {
+            createLink("prototypes.yapion");
+        }
+        if (!new File(world.getWorldFolder(),"regions.yapion").exists()) {
+            createLink("regions.yapion");
+        }
+    }
+
+    private void createLink(String name) {
+        try {
+            ProcessBuilder processBuilder = new ProcessBuilder("ln", "-s", "/home/minecraft/backbone/server/Bau15/" + name, name);
+            processBuilder.directory(world.getWorldFolder());
+            processBuilder.inheritIO();
+
+            Process process = processBuilder.start();
+            process.waitFor();
+        } catch (IOException | InterruptedException e) {
+            Thread.currentThread().interrupt();
+            Bukkit.shutdown();
+        }
+    }
 }