make cb return output yes finally

last bot to have this feature?? prob not lol

src/main/java/land/chipmunk/chayapak/chomens_bot/commands/CommandBlockCommand.java

@@ -1,18 +1,23 @@
 package land.chipmunk.chayapak.chomens_bot.commands;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
 import land.chipmunk.chayapak.chomens_bot.Bot;
 import land.chipmunk.chayapak.chomens_bot.command.Command;
 import land.chipmunk.chayapak.chomens_bot.command.CommandContext;
 import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
 
 public class CommandBlockCommand implements Command {
     public String name() { return "cb"; }
 
     public String description() {
-        return "Executes a command in the command core";
+        return "Executes a command in the command core and return it's output";
     }
 
     public List<String> usage() {
@@ -35,10 +40,22 @@ public class CommandBlockCommand implements Command {
         return 0;
     }
 
-    public Component execute(CommandContext context, String[] args, String[] fullArgs) {
+    public Component execute(CommandContext context, String[] args, String[] fullArgs) throws ExecutionException, InterruptedException {
         final Bot bot = context.bot();
 
-        bot.core().run(String.join(" ", args));
+        final CompletableFuture<CompoundTag> future = bot.core().runTracked(String.join(" ", args));
+
+        future.thenApply(tags -> {
+            if (!tags.contains("LastOutput") || !(tags.get("LastOutput") instanceof StringTag)) return tags;
+
+            final StringTag lastOutput = tags.get("LastOutput");
+
+            final Component output = GsonComponentSerializer.gson().deserialize(lastOutput.getValue());
+
+            context.sendOutput(output);
+
+            return tags;
+        });
 
         return Component.text("success");
     }

src/main/java/land/chipmunk/chayapak/chomens_bot/plugins/CorePlugin.java

@@ -5,8 +5,10 @@ import com.github.steveice10.mc.protocol.data.game.entity.object.Direction;
 import com.github.steveice10.mc.protocol.data.game.entity.player.Hand;
 import com.github.steveice10.mc.protocol.data.game.entity.player.PlayerAction;
 import com.github.steveice10.mc.protocol.data.game.level.block.CommandBlockMode;
+import com.github.steveice10.mc.protocol.packet.ingame.clientbound.level.ClientboundTagQueryPacket;
 import com.github.steveice10.mc.protocol.packet.ingame.serverbound.inventory.ServerboundSetCommandBlockPacket;
 import com.github.steveice10.mc.protocol.packet.ingame.serverbound.inventory.ServerboundSetCreativeModeSlotPacket;
+import com.github.steveice10.mc.protocol.packet.ingame.serverbound.level.ServerboundBlockEntityTagQuery;
 import com.github.steveice10.mc.protocol.packet.ingame.serverbound.player.ServerboundPlayerActionPacket;
 import com.github.steveice10.mc.protocol.packet.ingame.serverbound.player.ServerboundUseItemOnPacket;
 import com.github.steveice10.opennbt.tag.builtin.ByteTag;
@@ -16,11 +18,16 @@ import com.github.steveice10.opennbt.tag.builtin.Tag;
 import com.github.steveice10.packetlib.Session;
 import com.github.steveice10.packetlib.event.session.DisconnectedEvent;
 import com.github.steveice10.packetlib.event.session.SessionAdapter;
+import com.github.steveice10.packetlib.packet.Packet;
 import com.nukkitx.math.vector.Vector3i;
-import lombok.Getter;
 import land.chipmunk.chayapak.chomens_bot.Bot;
+import lombok.Getter;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.TimeUnit;
 
 public class CorePlugin extends PositionPlugin.PositionListener {
@@ -37,6 +44,9 @@ public class CorePlugin extends PositionPlugin.PositionListener {
 
     public Vector3i relativeCorePosition = Vector3i.from(coreStart);
 
+    private int nextTransactionId = 0;
+    private final Map<Integer, CompletableFuture<CompoundTag>> transactions = new HashMap<>();
+
     private final boolean kaboom;
 
     public CorePlugin (Bot bot) {
@@ -50,6 +60,11 @@ public class CorePlugin extends PositionPlugin.PositionListener {
             public void disconnected (DisconnectedEvent event) {
                 ready = false;
             }
+
+            @Override
+            public void packetReceived(Session session, Packet packet) {
+                if (packet instanceof ClientboundTagQueryPacket) CorePlugin.this.packetReceived((ClientboundTagQueryPacket) packet);
+            }
         });
     }
 
@@ -76,6 +91,28 @@ public class CorePlugin extends PositionPlugin.PositionListener {
         incrementBlock();
     }
 
+    public CompletableFuture<CompoundTag> runTracked (String command) {
+        final Vector3i position = absoluteCorePosition();
+
+        run(command);
+
+        final int transactionId = nextTransactionId++;
+
+        // promises are renamed to future lmao
+        final CompletableFuture<CompoundTag> future = new CompletableFuture<>();
+        transactions.put(transactionId, future);
+
+        final Runnable afterTick = () -> bot.session().send(new ServerboundBlockEntityTagQuery(transactionId, position));
+
+        bot.executor().schedule(afterTick, 50, TimeUnit.MILLISECONDS);
+
+        return future;
+    }
+
+    public void packetReceived (ClientboundTagQueryPacket packet) {
+        transactions.get(packet.getTransactionId()).complete(packet.getNbt());
+    }
+
     public Vector3i absoluteCorePosition () {
         return relativeCorePosition.add(origin);
     }