The beginning

src/main/java/com/songoda/ultimatetimber/UltimateTimber.java

@@ -2,7 +2,11 @@ package com.songoda.ultimatetimber;
 
 import java.util.*;
 
+import com.songoda.ultimatetimber.adapter.VersionAdapter;
+import com.songoda.ultimatetimber.adapter.current.CurrentAdapter;
+import com.songoda.ultimatetimber.adapter.legacy.LegacyAdapter;
 import com.songoda.ultimatetimber.utils.Metrics;
+import com.songoda.ultimatetimber.utils.NMSUtil;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.World;
@@ -19,18 +23,13 @@ import com.songoda.ultimatetimber.treefall.TreeFallAnimation;
 import com.songoda.ultimatetimber.treefall.TreeFallListener;
 import com.songoda.ultimatetimber.utils.Methods;
 
-/*
-Note: In this plugin, I have called the act of a tree falling over with pseudo-physics "toppling over". This is reflected
-in the documentation, config files and variable names.
-PS: MagmaGuy was here
- */
-
 public class UltimateTimber extends JavaPlugin {
-    
-    private final static CommandSender console = Bukkit.getConsoleSender();
+
+    private static final String prefix = "&8[&6UltimateTimber&8]";
+    private static final CommandSender console = Bukkit.getConsoleSender();
     private static UltimateTimber INSTANCE;
 
-    private final String prefix = "&8[&6UltimateTimber&8]";
+    private VersionAdapter adapter;
     private Set<String> validWorlds = new HashSet<>();
     private List<UUID> isNotChopping = new ArrayList<>();
 
@@ -40,14 +39,17 @@ public class UltimateTimber extends JavaPlugin {
 
     @Override
     public void onEnable() {
-
-        if (!checkVersion()) return;
-
         INSTANCE = this;
 
         console.sendMessage(Methods.formatText("&a============================="));
         console.sendMessage(Methods.formatText("&7" + this.getDescription().getName() + " " + this.getDescription().getVersion() + " by &5Songoda <3&7!"));
         console.sendMessage(Methods.formatText("&7Action: &aEnabling&7..."));
+
+        /*
+        Set up version adapter
+         */
+        this.setupAdapter();
+
         /*
         Register the main event that handles toppling down trees
          */
@@ -85,7 +87,10 @@ public class UltimateTimber extends JavaPlugin {
         CommandHandler commandHandler = new CommandHandler();
         ultimatetimber.setExecutor(commandHandler);
         ultimatetimber.setTabCompleter(commandHandler);
-        
+
+        /*
+        Set up metrics
+         */
         new Metrics(this);
         
         console.sendMessage(Methods.formatText("&a============================="));
@@ -115,20 +120,12 @@ public class UltimateTimber extends JavaPlugin {
         return prefix;
     }
 
-    private boolean checkVersion() {
-        int workingVersion = 13;
-        int currentVersion = Integer.parseInt(Bukkit.getServer().getClass()
-                .getPackage().getName().split("\\.")[3].split("_")[1]);
-
-        if (currentVersion < workingVersion) {
-            Bukkit.getScheduler().scheduleSyncDelayedTask(this, () -> {
-                console.sendMessage("");
-                console.sendMessage(String.format("%sYou installed the 1.%s only version of %s on a 1.%s server. Since you are on the wrong version we disabled the plugin for you. Please install correct version to continue using %s.", ChatColor.RED, workingVersion, this.getDescription().getName(), currentVersion, this.getDescription().getName()));
-                console.sendMessage("");
-            }, 20L);
-            return false;
+    private void setupAdapter() {
+        if (NMSUtil.getVersionNumber() > 12) {
+            this.adapter = new CurrentAdapter();
+        } else {
+            this.adapter = new LegacyAdapter();
         }
-        return true;
     }
 
     public boolean toggleChopping(Player player) {
@@ -142,4 +139,8 @@ public class UltimateTimber extends JavaPlugin {
         return !this.isNotChopping.contains(player.getUniqueId());
     }
 
+    public VersionAdapter getAdapter() {
+        return this.adapter;
+    }
+
 }

src/main/java/com/songoda/ultimatetimber/adapter/VersionAdapter.java

@@ -0,0 +1,14 @@
+package com.songoda.ultimatetimber.adapter;
+
+import jdk.nashorn.internal.ir.Block;
+import org.bukkit.inventory.ItemStack;
+
+import java.util.Set;
+
+public interface VersionAdapter {
+
+    Set<ItemStack> getBlockDrops(Block block);
+
+    void applyToolDurability(Set<Block> blocks, ItemStack tool);
+
+}

src/main/java/com/songoda/ultimatetimber/adapter/current/CurrentAdapter.java

@@ -0,0 +1,7 @@
+package com.songoda.ultimatetimber.adapter.current;
+
+import com.songoda.ultimatetimber.adapter.VersionAdapter;
+
+public class CurrentAdapter implements VersionAdapter {
+
+}

src/main/java/com/songoda/ultimatetimber/adapter/legacy/LegacyAdapter.java

@@ -0,0 +1,7 @@
+package com.songoda.ultimatetimber.adapter.legacy;
+
+import com.songoda.ultimatetimber.adapter.VersionAdapter;
+
+public class LegacyAdapter implements VersionAdapter {
+
+}

src/main/java/com/songoda/ultimatetimber/hooks/TimberHook.java

@@ -10,6 +10,6 @@ public interface TimberHook {
     /**
      * Applies the hook
      */
-    public void apply(Player player, HashSet<Block> treeBlocks) throws Exception;
+    void apply(Player player, HashSet<Block> treeBlocks) throws Exception;
     
 }

src/main/java/com/songoda/ultimatetimber/utils/NMSUtil.java

@@ -0,0 +1,22 @@
+package com.songoda.ultimatetimber.utils;
+
+import org.bukkit.Bukkit;
+
+public class NMSUtil {
+
+    public static String getVersion() {
+        String name = Bukkit.getServer().getClass().getPackage().getName();
+        return name.substring(name.lastIndexOf('.') + 1) + ".";
+    }
+
+    public static int getVersionNumber() {
+        String name = getVersion().substring(3);
+        return Integer.valueOf(name.substring(0, name.length() - 4));
+    }
+
+    public static int getVersionReleaseNumber() {
+        String NMSVersion = getVersion();
+        return Integer.valueOf(NMSVersion.substring(NMSVersion.length() - 2).replace(".", ""));
+    }
+
+}

src/main/resources/plugin.yml

@@ -3,7 +3,7 @@ version: maven-version-number
 author: Songoda
 main: com.songoda.ultimatetimber.UltimateTimber
 api-version: 1.13
-softdepend: [Multiverse-Core, mcMMO, Jobs]
+softdepend: [mcMMO, Jobs]
 commands:
   ultimatetimber:
     description: Reloads the configuration file