Provide access to Pointer values

proxy/src/main/java/com/velocitypowered/proxy/connection/client/ConnectedPlayer.java

@@ -94,12 +94,15 @@ import java.util.concurrent.ThreadLocalRandom;
 import net.kyori.adventure.audience.MessageType;
 import net.kyori.adventure.bossbar.BossBar;
 import net.kyori.adventure.identity.Identity;
+import net.kyori.adventure.permission.PermissionChecker;
+import net.kyori.adventure.pointer.Pointer;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.TranslatableComponent;
 import net.kyori.adventure.text.format.NamedTextColor;
 import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
 import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
 import net.kyori.adventure.text.serializer.plain.PlainComponentSerializer;
+import net.kyori.adventure.util.TriState;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
@@ -122,6 +125,7 @@ public class ConnectedPlayer implements MinecraftConnectionAssociation, Player {
   private final MinecraftConnection connection;
   private final @Nullable InetSocketAddress virtualHost;
   private GameProfile profile;
+  private PermissionChecker permissionChecker;
   private PermissionFunction permissionFunction;
   private int tryIndex = 0;
   private long ping = -1;
@@ -149,6 +153,7 @@ public class ConnectedPlayer implements MinecraftConnectionAssociation, Player {
     this.profile = profile;
     this.connection = connection;
     this.virtualHost = virtualHost;
+    this.permissionChecker = PermissionChecker.always(TriState.FALSE);
     this.permissionFunction = PermissionFunction.ALWAYS_UNDEFINED;
     this.connectionPhase = connection.getType().getInitialClientPhase();
     this.knownChannels = CappedSet.create(MAX_PLUGIN_CHANNELS);
@@ -249,6 +254,18 @@ public class ConnectedPlayer implements MinecraftConnectionAssociation, Player {
 
   void setPermissionFunction(PermissionFunction permissionFunction) {
     this.permissionFunction = permissionFunction;
+    this.permissionChecker = permission -> {
+      final Tristate state = permissionFunction.getPermissionValue(permission);
+      if (state == Tristate.TRUE) {
+        return TriState.TRUE;
+      } else if (state == Tristate.UNDEFINED) {
+        return TriState.NOT_SET;
+      } else if (state == Tristate.FALSE) {
+        return TriState.FALSE;
+      } else {
+        throw new IllegalArgumentException();
+      }
+    };
   }
 
   @Override
@@ -261,6 +278,19 @@ public class ConnectedPlayer implements MinecraftConnectionAssociation, Player {
     return connection.getProtocolVersion();
   }
 
+  @Override
+  @SuppressWarnings("unchecked") // safe casts
+  public <T> Optional<T> get(final Pointer<T> pointer) {
+    if (pointer == Identity.UUID) {
+      return Optional.of((T) this.getUniqueId());
+    } else if (pointer == Identity.NAME) {
+      return Optional.of((T) this.getGameProfile().getName());
+    } else if (pointer == PermissionChecker.POINTER) {
+      return Optional.of((T) this.permissionChecker);
+    }
+    return Player.super.get(pointer);
+  }
+
   @Override
   public void sendMessage(net.kyori.text.Component component, MessagePosition position) {
     Preconditions.checkNotNull(component, "component");