Added /vanish list command and list vanished players on join

src/main/java/de/shiewk/smoderation/command/VanishCommand.java

@@ -3,6 +3,9 @@ package de.shiewk.smoderation.command;
 import de.shiewk.smoderation.SModeration;
 import de.shiewk.smoderation.util.PlayerUtil;
 import it.unimi.dsi.fastutil.objects.ObjectArrayList;
+import it.unimi.dsi.fastutil.objects.ObjectListIterator;
+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;
@@ -20,9 +23,10 @@ public class VanishCommand implements TabExecutor {
 
     @Override
     public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+        if (args.length == 0 || args[0].equalsIgnoreCase("toggle")){
             Player player = null;
-        if (args.length > 0){
+            if (args.length > 1){
-            player = PlayerUtil.findOnlinePlayer(args[0]);
+                player = PlayerUtil.findOnlinePlayer(args[1]);
             } else if (sender instanceof Player){
                 player = (Player) sender;
             }
@@ -32,12 +36,25 @@ public class VanishCommand implements TabExecutor {
             } else {
                 return false;
             }
+        } else if (args[0].equalsIgnoreCase("list")) {
+            if (sender.hasPermission("smod.vanish.see")){
+                listVanishedPlayersTo(sender);
+            } else {
+                sender.sendMessage(text().color(NamedTextColor.RED).content("You do not have permission to list all vanished players."));
+            }
+            return true;
+        } else {
+            return false;
+        }
     }
 
     @Override
     public @Nullable List<String> onTabComplete(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
         if (args.length < 2){
-            return PlayerUtil.listPlayerNames();
+            return List.of("list", "toggle");
+        }
+        if (args.length < 3 && args[0].equalsIgnoreCase("toggle")){
+            return PlayerUtil.listPlayerNames(args[1]);
         }
         return List.of();
     }
@@ -89,4 +106,28 @@ public class VanishCommand implements TabExecutor {
     public static ObjectArrayList<Player> getVanishedPlayers() {
         return vanishedPlayers.clone();
     }
+
+    public static void listVanishedPlayersTo(CommandSender receiver){
+        if (vanishedPlayers.isEmpty()){
+            receiver.sendMessage(CHAT_PREFIX.append(
+                    text().content("No players are currently vanished.").color(PRIMARY_COLOR)
+            ));
+        } else {
+            Component vanishList = CHAT_PREFIX.append(
+                    text().content("The following players are currently vanished: ").color(PRIMARY_COLOR)
+            );
+            for (ObjectListIterator<Player> iterator = vanishedPlayers.iterator(); iterator.hasNext(); ) {
+                Player vanishedPlayer = iterator.next();
+                vanishList = vanishList.append(
+                        vanishedPlayer.displayName().colorIfAbsent(SECONDARY_COLOR)
+                );
+                if (iterator.hasNext()){
+                    vanishList = vanishList.append(
+                            text().content(", ").color(PRIMARY_COLOR)
+                    );
+                }
+            }
+            receiver.sendMessage(vanishList);
+        }
+    }
 }

src/main/java/de/shiewk/smoderation/listener/VanishListener.java

@@ -25,12 +25,14 @@ public class VanishListener implements Listener {
 
     @EventHandler(priority = EventPriority.MONITOR) public void onPlayerJoin(PlayerJoinEvent event){
         Bukkit.getScheduler().scheduleSyncDelayedTask(SModeration.PLUGIN, () -> {
-            final Player player = event.getPlayer();
+            final Player player = event.getPlayer().getPlayer();
+            assert player != null;
             if (player.hasPermission("smod.vanish.see")){
                 for (Player vanishedPlayer : VanishCommand.getVanishedPlayers()) {
                     // to show visible vanished players
                     player.showEntity(SModeration.PLUGIN, vanishedPlayer);
                 }
+                VanishCommand.listVanishedPlayersTo(player);
             }
         });
     }

src/main/java/de/shiewk/smoderation/util/PlayerUtil.java

@@ -6,6 +6,7 @@ import org.bukkit.Bukkit;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
+import org.bukkit.util.StringUtil;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -71,4 +72,8 @@ public abstract class PlayerUtil {
         }
         return List.copyOf(names);
     }
+
+    public static List<String> listPlayerNames(String search) {
+        return StringUtil.copyPartialMatches(search, listPlayerNames(), new ArrayList<>());
+    }
 }

src/main/resources/plugin.yml

@@ -72,7 +72,7 @@ commands:
     permission: smod.enderchestsee
     description: Views the ender chest of another player.
   vanish:
-    usage: "§cUsage: /vanish <player>"
+    usage: "§cUsage: /vanish list or /vanish toggle <player>"
     aliases:
       - smvanish
     permission: smod.vanish