i'm very eepy, but it compiles and works normally if you don't interact with the group system uwu

src/main/java/de/lunarakai/minecleaner/commands/groups/InviteCommand.java

@@ -0,0 +1,74 @@
+package de.lunarakai.minecleaner.commands.groups;
+
+import de.iani.cubesideutils.bukkit.commands.SubCommand;
+import de.iani.cubesideutils.bukkit.commands.exceptions.*;
+import de.iani.cubesideutils.commands.ArgsParser;
+import de.lunarakai.minecleaner.MinecleanerGroupManager;
+import de.lunarakai.minecleaner.MinecleanerPlugin;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import org.bukkit.Bukkit;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+public class InviteCommand extends SubCommand {
+    /*
+        TODO:
+            - Invite other Players to play in Duo Mode
+            - Add Functionality to support multiple Players in the same game
+            - use settings of player that invited the other player
+     */
+
+    private final MinecleanerPlugin plugin;
+
+    public InviteCommand(MinecleanerPlugin plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public String getUsage() {
+        return "<Player>";
+    }
+
+    @Override
+    public boolean requiresPlayer() {
+        return true;
+    }
+
+    @Override
+    public String getRequiredPermission() {
+        return MinecleanerPlugin.PERMISSION_PLAY;
+    }
+
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String s, String commandString, ArgsParser args) throws DisallowsCommandBlockException, RequiresPlayerException, NoPermissionException, IllegalSyntaxException, InternalCommandException {
+        Player player = (Player) sender;
+        if(args.remaining() < 1 || args.remaining() >= 2) {
+            sender.sendMessage(Component.text(commandString + getUsage(), NamedTextColor.DARK_RED));
+            return true;
+        }
+        String playerName = args.getNext().trim();
+        Player invitedPlayer = plugin.getServer().getPlayer(playerName);
+
+        MinecleanerGroupManager groupManager = plugin.getGroupManager();
+        if(groupManager.getInvitedGroup(player) != null) {
+            player.sendMessage(Component.text("Du wurdest bereits in eine Gruppe eingeladen. Bitte kümmere dich zuerst um die Einladung bevor du eine eigene Gruppe erstellst.", NamedTextColor.YELLOW));
+            return true;
+        }
+
+        if(groupManager.getGroup(player) != null && Bukkit.getPlayer(groupManager.getGroup(player).getOwner()).equals(player)) {
+            player.sendMessage(Component.text("Nur als Ersteller der Gruppe bist du berechtigt Leute einzuladen.", NamedTextColor.YELLOW));
+            return true;
+        }
+
+        if(groupManager.getGroup(player) == null) {
+            groupManager.createGroup(player);
+        }
+
+        assert invitedPlayer != null;
+        groupManager.getGroup(player).invitePlayerToGroup(invitedPlayer);
+
+        return true;
+    }
+}