added CommandHandler support

Author: FlorianMichael

src/main/java/de/florianmichael/vialoadingbase/ViaLoadingBase.java

@@ -27,6 +27,7 @@
 import de.florianmichael.vialoadingbase.model.ComparableProtocolVersion;
 import de.florianmichael.vialoadingbase.platform.ViaBackwardsPlatformImpl;
 import de.florianmichael.vialoadingbase.platform.ViaRewindPlatformImpl;
+import de.florianmichael.vialoadingbase.platform.viaversion.VLBCommandHandler;
 import de.florianmichael.vialoadingbase.platform.viaversion.VLBViaProviders;
 import de.florianmichael.vialoadingbase.platform.ViaVersionPlatformImpl;
 import de.florianmichael.vialoadingbase.platform.viaversion.VLBViaInjector;
@@ -105,7 +106,13 @@ public void initPlatform() {
         this.targetProtocolVersion = this.nativeProtocolVersion;
 
         final ViaVersionPlatformImpl viaVersionPlatform = new ViaVersionPlatformImpl(ViaLoadingBase.LOGGER);
-        final ViaManagerImpl.ViaManagerBuilder builder = ViaManagerImpl.builder().injector(new VLBViaInjector()).loader(new VLBViaProviders()).platform(viaVersionPlatform);
+        final ViaManagerImpl.ViaManagerBuilder builder = ViaManagerImpl.builder().
+                platform(viaVersionPlatform).
+                loader(new VLBViaProviders()).
+                injector(new VLBViaInjector()).
+                commandHandler(new VLBCommandHandler())
+                ;
+
         if (this.managerBuilderConsumer != null) this.managerBuilderConsumer.accept(builder);
 
         Via.init(builder.build());

src/main/java/de/florianmichael/vialoadingbase/command/UserCommandSender.java

@@ -0,0 +1,52 @@
+/*
+ * This file is part of ViaLoadingBase - https://github.com/FlorianMichael/ViaLoadingBase
+ * Copyright (C) 2023 FlorianMichael/EnZaXD and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.florianmichael.vialoadingbase.command;
+
+import com.viaversion.viaversion.api.Via;
+import com.viaversion.viaversion.api.command.ViaCommandSender;
+import com.viaversion.viaversion.api.connection.UserConnection;
+
+import java.util.UUID;
+
+public class UserCommandSender implements ViaCommandSender {
+    private final UserConnection user;
+
+    public UserCommandSender(UserConnection user) {
+        this.user = user;
+    }
+
+    @Override
+    public boolean hasPermission(String s) {
+        return false;
+    }
+
+    @Override
+    public void sendMessage(String s) {
+        Via.getPlatform().sendMessage(getUUID(), s);
+    }
+
+    @Override
+    public UUID getUUID() {
+        return user.getProtocolInfo().getUuid();
+    }
+
+    @Override
+    public String getName() {
+        return user.getProtocolInfo().getUsername();
+    }
+}

src/main/java/de/florianmichael/vialoadingbase/command/impl/LeakDetectSubCommand.java

@@ -0,0 +1,63 @@
+/*
+ * This file is part of ViaLoadingBase - https://github.com/FlorianMichael/ViaLoadingBase
+ * Copyright (C) 2023 FlorianMichael/EnZaXD and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.florianmichael.vialoadingbase.command.impl;
+
+import io.netty.util.ResourceLeakDetector;
+import com.viaversion.viaversion.api.command.ViaCommandSender;
+import com.viaversion.viaversion.api.command.ViaSubCommand;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class LeakDetectSubCommand extends ViaSubCommand {
+
+    @Override
+    public String name() {
+        return "leakdetect";
+    }
+
+    @Override
+    public String description() {
+        return "Sets ResourceLeakDetector level";
+    }
+
+    @Override
+    public boolean execute(ViaCommandSender viaCommandSender, String[] strings) {
+        if (strings.length == 1) {
+            try {
+                ResourceLeakDetector.Level level = ResourceLeakDetector.Level.valueOf(strings[0]);
+                ResourceLeakDetector.setLevel(level);
+                viaCommandSender.sendMessage("Set leak detector level to " + level);
+            } catch (IllegalArgumentException e) {
+                viaCommandSender.sendMessage("Invalid level (" + Arrays.toString(ResourceLeakDetector.Level.values()) + ")");
+            }
+        } else {
+            viaCommandSender.sendMessage("Current leak detection level is " + ResourceLeakDetector.getLevel());
+        }
+        return true;
+    }
+
+    @Override
+    public List<String> onTabComplete(ViaCommandSender sender, String[] args) {
+        if (args.length == 1) {
+            return Arrays.stream(ResourceLeakDetector.Level.values()).map(Enum::name).filter(it -> it.startsWith(args[0])).collect(Collectors.toList());
+        }
+        return super.onTabComplete(sender, args);
+    }
+}

src/main/java/de/florianmichael/vialoadingbase/platform/viaversion/VLBCommandHandler.java

@@ -0,0 +1,33 @@
+/*
+ * This file is part of ViaLoadingBase - https://github.com/FlorianMichael/ViaLoadingBase
+ * Copyright (C) 2023 FlorianMichael/EnZaXD and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.florianmichael.vialoadingbase.platform.viaversion;
+
+import com.viaversion.viaversion.commands.ViaCommandHandler;
+import de.florianmichael.vialoadingbase.command.impl.LeakDetectSubCommand;
+
+public class VLBCommandHandler extends ViaCommandHandler {
+
+    public VLBCommandHandler() {
+        super();
+        this.registerVLBDefaults();
+    }
+
+    public void registerVLBDefaults() {
+        this.registerSubCommand(new LeakDetectSubCommand());
+    }
+}