fix: don't run seen (track players' IPs) when it doesn't exist (for ayunboom)

src/main/java/me/chayapak1/chomens_bot/plugins/PlayersPlugin.java

@@ -83,6 +83,8 @@ public class PlayersPlugin implements Listener {
         final CompletableFuture<String> future = getPlayerIP(target, true);
 
         future.thenApply(ip -> {
+            if (ip == null) return null;
+
             target.persistingData.ip = ip;
 
             bot.listener.dispatch(listener -> listener.onQueriedPlayerIP(target, ip));
@@ -106,7 +108,13 @@ public class PlayersPlugin implements Listener {
                 }
             }
 
-            if (!bot.serverFeatures.hasEssentials) {
+            if (
+                    !bot.serverFeatures.hasEssentials ||
+                            (
+                                    !bot.serverFeatures.serverHasCommand("essentials:seen")
+                                            && !bot.serverFeatures.serverHasCommand("seen")
+                            )
+            ) {
                 outputFuture.complete(null);
                 return;
             }
@@ -154,6 +162,7 @@ public class PlayersPlugin implements Listener {
     }
 
     public final PlayerEntry getEntry (final String username) { return getEntry(username, true, true); }
+
     public final PlayerEntry getEntry (final String username, final boolean checkUUID, final boolean checkPastUsernames) {
         synchronized (list) {
             for (final PlayerEntry candidate : list) {

src/main/java/me/chayapak1/chomens_bot/plugins/ServerFeaturesPlugin.java

@@ -1,5 +1,6 @@
 package me.chayapak1.chomens_bot.plugins;
 
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import me.chayapak1.chomens_bot.Bot;
 import me.chayapak1.chomens_bot.data.listener.Listener;
 import org.geysermc.mcprotocollib.network.Session;
@@ -9,9 +10,13 @@ import org.geysermc.mcprotocollib.protocol.data.game.command.CommandNode;
 import org.geysermc.mcprotocollib.protocol.data.game.command.CommandType;
 import org.geysermc.mcprotocollib.protocol.packet.ingame.clientbound.ClientboundCommandsPacket;
 
+import java.util.List;
+
 public class ServerFeaturesPlugin implements Listener {
     private final Bot bot;
 
+    private final List<String> commands = new ObjectArrayList<>();
+
     public boolean hasNamespaces = false;
 
     public boolean hasEssentials = false;
@@ -31,6 +36,8 @@ public class ServerFeaturesPlugin implements Listener {
     }
 
     private void packetReceived (final ClientboundCommandsPacket packet) {
+        commands.clear();
+
         for (final CommandNode node : packet.getNodes()) {
             if (!node.isExecutable() || node.getType() != CommandType.LITERAL) continue;
 
@@ -38,6 +45,8 @@ public class ServerFeaturesPlugin implements Listener {
 
             if (name == null) continue;
 
+            commands.add(name);
+
             if (name.contains(":")) hasNamespaces = true;
 
             if (!name.contains(":")) continue;
@@ -65,10 +74,16 @@ public class ServerFeaturesPlugin implements Listener {
         }
     }
 
+    public boolean serverHasCommand (final String command) {
+        return commands.contains(command);
+    }
+
     @Override
     public void disconnected (final DisconnectedEvent event) {
         hasNamespaces = false;
         hasEssentials = false;
         hasExtras = false;
+        hasIControlU = false;
+        hasCommandSpy = false;
     }
 }