Add saveConfig() and filter-config value

src/main/java/de/marc/advancedKill/AdvancedKill.java

@@ -19,7 +19,11 @@ public final class AdvancedKill extends JavaPlugin {
         saveDefaultConfig();
 
         getCommand("akill").setExecutor(this);
-        getCommand("afilter").setExecutor(new AdvancedKillFilter());
+
+        if (getConfig().getBoolean("filter-player")) {
+            getCommand("afilter").setExecutor(new AdvancedKillFilter(this));
+        }
+
         getLogger().info("AdvancedKill was loaded!");
     }
 
@@ -110,21 +114,32 @@ public final class AdvancedKill extends JavaPlugin {
 
     //Completions
     @Override
-    public @Nullable List<String> onTabComplete(CommandSender sender, Command command, String alias, String[] args) {
+    public @Nullable List<String> onTabComplete(CommandSender sender, Command command, String label, String[] args) {
         List<String> completions = new ArrayList<>();
-        if (sender.hasPermission("akill.use")) {
-            if (args.length == 1) {
-                completions.add("lightning");
-                completions.add("void");
-                completions.add("zombie");
-                completions.add("half");
-                completions.add("anvil");
-                completions.add("explosion");
-                completions.add("fall");
-                completions.add("lava");
-            }
 
-            if (args.length == 2) {
+        if (label.equals("akill")) {
+            if (sender.hasPermission("akill.use")) {
+                if (args.length == 1) {
+                    completions.add("lightning");
+                    completions.add("void");
+                    completions.add("zombie");
+                    completions.add("half");
+                    completions.add("anvil");
+                    completions.add("explosion");
+                    completions.add("fall");
+                    completions.add("lava");
+                }
+
+                if (args.length == 2) {
+                    for (Player player : Bukkit.getOnlinePlayers()) {
+                        completions.add(player.getName());
+                    }
+                }
+            }
+        }
+
+        if (label.equals("afilter")) {
+            if (args.length == 1) {
                 for (Player player : Bukkit.getOnlinePlayers()) {
                     completions.add(player.getName());
                 }