Tab delaying

(cherry picked from commit 386de52b9db1454e0fcec56ef9bfcd2c3a0f8d4a)

bukkit/src/main/java/us/myles/ViaVersion/bukkit/platform/BukkitViaConfig.java

@@ -244,4 +244,9 @@ public class BukkitViaConfig extends Config implements ViaVersionConfig {
     public boolean isSnowCollisionFix() {
         return getBoolean("fix-low-snow-collision", false);
     }
+
+    @Override
+    public int get1_13TabCompleteDelay() {
+        return getInt("1_13-tab-complete-delay", 0);
+    }
 }

bungee/src/main/java/us/myles/ViaVersion/bungee/platform/BungeeViaConfig.java

@@ -297,4 +297,9 @@ public class BungeeViaConfig extends Config implements ViaVersionConfig {
     public boolean isSnowCollisionFix() {
         return getBoolean("fix-low-snow-collision", false);
     }
+
+    @Override
+    public int get1_13TabCompleteDelay() {
+        return getInt("1_13-tab-complete-delay", 0);
+    }
 }

common/src/main/java/us/myles/ViaVersion/api/ViaVersionConfig.java

@@ -302,4 +302,10 @@ public interface ViaVersionConfig {
      * @return True if enabled
      */
     boolean isSnowCollisionFix();
+
+    /**
+     * When greater than 0, enables tab complete request delaying by x ticks
+     * @return the delay in ticks
+     */
+    int get1_13TabCompleteDelay();
 }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/Protocol1_13To1_12_2.java

@@ -852,9 +852,33 @@ public class Protocol1_13To1_12_2 extends Protocol {
                 // Fake the end of the packet
                 create(new ValueCreator() {
                     @Override
-                    public void write(PacketWrapper wrapper) {
+                    public void write(PacketWrapper wrapper) throws Exception {
                         wrapper.write(Type.BOOLEAN, false);
                         wrapper.write(Type.OPTIONAL_POSITION, null);
+                        if (!wrapper.isCancelled() && Via.getConfig().get1_13TabCompleteDelay() > 0) {
+                            TabCompleteTracker tracker = wrapper.user().get(TabCompleteTracker.class);
+                            if (tracker.getLastTabCompleteTask() != null) {
+                                Via.getPlatform().cancelTask(tracker.getLastTabCompleteTask());
+                            }
+                            wrapper.cancel();
+                            wrapper.resetReader();
+                            final PacketWrapper delayedPacket = wrapper.create(0x1);
+                            delayedPacket.write(Type.STRING, wrapper.read(Type.STRING));
+                            delayedPacket.write(Type.BOOLEAN, false);
+                            delayedPacket.write(Type.OPTIONAL_POSITION, null);
+                            tracker.setLastTabCompleteTask(
+                                    Via.getPlatform().runSync(new Runnable() {
+                                        @Override
+                                        public void run() {
+                                            try {
+                                                delayedPacket.sendToServer(Protocol1_13To1_12_2.class);
+                                            } catch (Exception e) {
+                                                e.printStackTrace();
+                                            }
+                                        }
+                                    }, (long) Via.getConfig().get1_13TabCompleteDelay())
+                            );
+                        }
                     }
                 });
             }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/storage/TabCompleteTracker.java

@@ -1,29 +1,19 @@
 package us.myles.ViaVersion.protocols.protocol1_13to1_12_2.storage;
 
+import lombok.Getter;
+import lombok.Setter;
 import us.myles.ViaVersion.api.data.StoredObject;
 import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.platform.TaskId;
 
+@Getter
+@Setter
 public class TabCompleteTracker extends StoredObject {
     private int transactionId;
     private String input;
+    private TaskId lastTabCompleteTask;
 
     public TabCompleteTracker(UserConnection user) {
         super(user);
     }
-
-    public int getTransactionId() {
-        return transactionId;
-    }
-
-    public void setTransactionId(int transactionId) {
-        this.transactionId = transactionId;
-    }
-
-    public String getInput() {
-        return input;
-    }
-
-    public void setInput(String input) {
-        this.input = input;
-    }
 }

common/src/main/resources/assets/viaversion/config.yml

@@ -114,6 +114,8 @@ team-colour-fix: true
 suppress-1_13-conversion-errors: false
 # 1.13 introduced new auto complete which can trigger "Kicked for spamming" for servers older than 1.13, the following option will disable it completely.
 disable-1_13-auto-complete: false
+# The following option will delay the tab complete request in x ticks if greater than 0, if other tab-complete is received, the previous is cancelled
+1_13-tab-complete-delay: 0
 # For 1.13 clients the smallest (1 layer) snow doesn't have collision, this will send these as 2 snowlayers for 1.13+ clients to prevent them bugging through them
 fix-low-snow-collision: false
 #

sponge/src/main/java/us/myles/ViaVersion/sponge/platform/SpongeViaConfig.java

@@ -250,4 +250,9 @@ public class SpongeViaConfig extends Config implements ViaVersionConfig {
     public boolean isSnowCollisionFix() {
         return getBoolean("fix-low-snow-collision", false);
     }
+
+    @Override
+    public int get1_13TabCompleteDelay() {
+        return getInt("1_13-tab-complete-delay", 0);
+    }
 }

velocity/src/main/java/us/myles/ViaVersion/velocity/platform/VelocityViaConfig.java

@@ -302,4 +302,9 @@ public class VelocityViaConfig extends Config implements ViaVersionConfig {
     public boolean isSnowCollisionFix() {
         return getBoolean("fix-low-snow-collision", false);
     }
+
+    @Override
+    public int get1_13TabCompleteDelay() {
+        return getInt("1_13-tab-complete-delay", 0);
+    }
 }