Update

src/main/scala/io/izzel/taboolib/module/command/TCommandHandler.java

@@ -2,15 +2,17 @@ package io.izzel.taboolib.module.command;
 
 import io.izzel.taboolib.TabooLibAPI;
 import io.izzel.taboolib.module.command.base.BaseCommand;
-import io.izzel.taboolib.module.locale.TLocale;
 import io.izzel.taboolib.module.command.base.BaseMainCommand;
 import io.izzel.taboolib.module.inject.TFunction;
 import io.izzel.taboolib.module.lite.SimpleReflection;
+import io.izzel.taboolib.module.locale.TLocale;
 import io.izzel.taboolib.util.ArrayUtil;
 import io.izzel.taboolib.util.Files;
 import io.izzel.taboolib.util.Reflection;
 import org.bukkit.Bukkit;
 import org.bukkit.command.*;
+import org.bukkit.permissions.Permission;
+import org.bukkit.permissions.PermissionDefault;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.SimplePluginManager;
 
@@ -110,6 +112,21 @@ public class TCommandHandler {
      */
     public static BaseMainCommand registerCommand(BaseCommand tCommand, String command, BaseMainCommand baseMainCommand, Plugin plugin) {
         if (Bukkit.getPluginCommand(command) == null) {
+            String permission = tCommand.permission();
+            if (tCommand.permissionDefault() == PermissionDefault.TRUE || tCommand.permissionDefault() == PermissionDefault.NOT_OP) {
+                if (permission == null || permission.isEmpty()) {
+                    permission = plugin.getName().toLowerCase() + ".command.use";
+                }
+                if (Bukkit.getPluginManager().getPermission(permission) != null) {
+                    try {
+                        Permission p = new Permission(permission, tCommand.permissionDefault());
+                        Bukkit.getPluginManager().addPermission(p);
+                        Bukkit.getPluginManager().recalculatePermissionDefaults(p);
+                    } catch (Throwable t) {
+                        t.printStackTrace();
+                    }
+                }
+            }
             registerPluginCommand(
                     plugin,
                     command,

src/main/scala/io/izzel/taboolib/module/command/base/BaseCommand.java

@@ -1,5 +1,7 @@
 package io.izzel.taboolib.module.command.base;
 
+import org.bukkit.permissions.PermissionDefault;
+
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -24,4 +26,6 @@ public @interface BaseCommand {
     String usage() default "";
 
     String[] aliases() default {};
+
+    PermissionDefault permissionDefault() default PermissionDefault.OP;
 }

src/main/scala/io/izzel/taboolib/module/command/lite/CommandBuilder.java

@@ -5,6 +5,9 @@ import io.izzel.taboolib.TabooLib;
 import io.izzel.taboolib.module.command.TCommandHandler;
 import io.izzel.taboolib.util.ArrayUtil;
 import io.izzel.taboolib.util.Ref;
+import org.bukkit.Bukkit;
+import org.bukkit.permissions.Permission;
+import org.bukkit.permissions.PermissionDefault;
 import org.bukkit.plugin.Plugin;
 
 import java.util.ArrayList;
@@ -33,6 +36,7 @@ public class CommandBuilder {
     private boolean forceRegister;
     private boolean build;
     private boolean simpleMode;
+    private PermissionDefault permissionDefault = PermissionDefault.OP;
 
     CommandBuilder(String command, Plugin plugin) {
         this.command = command;
@@ -87,6 +91,11 @@ public class CommandBuilder {
         return this;
     }
 
+    public CommandBuilder permissionDefault(PermissionDefault permissionDefault) {
+        this.permissionDefault = permissionDefault;
+        return this;
+    }
+
     public CommandBuilder execute(CompleterCommand completerCommand) {
         this.completerCommand = completerCommand;
         return this;
@@ -109,6 +118,20 @@ public class CommandBuilder {
         if (forceRegister) {
             TCommandHandler.getKnownCommands().remove(command);
         }
+        if (permissionDefault == PermissionDefault.TRUE || permissionDefault == PermissionDefault.NOT_OP) {
+            if (permission == null) {
+                permission = plugin.getName().toLowerCase() + ".command.use";
+            }
+            if (Bukkit.getPluginManager().getPermission(permission) != null) {
+                try {
+                    Permission p = new Permission(permission, permissionDefault);
+                    Bukkit.getPluginManager().addPermission(p);
+                    Bukkit.getPluginManager().recalculatePermissionDefaults(p);
+                } catch (Throwable t) {
+                    t.printStackTrace();
+                }
+            }
+        }
         TCommandHandler.registerPluginCommand(
                 plugin,
                 command,