Display command

src/main/java/emu/nebula/command/commands/HelpCommand.java

@@ -0,0 +1,29 @@
+package emu.nebula.command.commands;
+
+import emu.nebula.Nebula;
+import emu.nebula.command.Command;
+import emu.nebula.command.CommandArgs;
+import emu.nebula.command.CommandHandler;
+
+@Command(label = "help", permission = "player.help", desc = "/help. Displays a list of available commands.")
+public class HelpCommand implements CommandHandler {
+
+    @Override
+    public void execute(CommandArgs args) {
+        args.sendMessage("Displaying list of commands:");
+
+        // Sort command names
+        var labels = Nebula.getCommandManager().getLabels().keySet().stream().sorted().toList();
+        for (var label : labels) {
+            // Get command
+            Command command = Nebula.getCommandManager().getLabels().get(label).getClass().getAnnotation(Command.class);
+            if (command == null) continue;
+
+            // Only send command description if the sender has permission to use the command
+            if (Nebula.getCommandManager().checkPermission(args.getSender(), command)) {
+                args.sendMessage(command.desc());
+            }
+        }
+    }
+
+}