Show teams in command suggestions

core/src/main/java/org/geysermc/geyser/scoreboard/Scoreboard.java

@@ -37,6 +37,7 @@ import org.geysermc.geyser.entity.type.Entity;
 import org.geysermc.geyser.entity.type.player.PlayerEntity;
 import org.geysermc.geyser.session.GeyserSession;
 import org.geysermc.geyser.text.GeyserLocale;
+import org.jetbrains.annotations.Contract;
 
 import javax.annotation.Nullable;
 import java.util.*;
@@ -132,6 +133,10 @@ public final class Scoreboard {
         team = new Team(this, teamName);
         team.addEntities(players);
         teams.put(teamName, team);
+
+        // Update command parameters - is safe to send even if the command enum doesn't exist on the client (as of 1.19.51)
+        session.addCommandEnum("Geyser_Teams", team.getId());
+
         return team;
     }
 
@@ -343,9 +348,16 @@ public final class Scoreboard {
             // We need to use the direct entities list here, so #refreshSessionPlayerDisplays also updates accordingly
             // With the player's lack of a team in visibility checks
             updateEntityNames(remove, remove.getEntities(), true);
+
+            session.removeCommandEnum("Geyser_Teams", remove.getId());
         }
     }
 
+    @Contract("-> new")
+    public String[] getTeamNames() {
+        return teams.keySet().toArray(new String[0]);
+    }
+
     /**
      * Updates the display names of all entities in a given team.
      * @param teamChange the players have either joined or left the team. Used for optimizations when just the display name updated.

core/src/main/java/org/geysermc/geyser/session/GeyserSession.java

@@ -67,7 +67,9 @@ import com.nukkitx.nbt.NbtMap;
 import com.nukkitx.protocol.bedrock.BedrockPacket;
 import com.nukkitx.protocol.bedrock.BedrockServerSession;
 import com.nukkitx.protocol.bedrock.data.*;
+import com.nukkitx.protocol.bedrock.data.command.CommandEnumData;
 import com.nukkitx.protocol.bedrock.data.command.CommandPermission;
+import com.nukkitx.protocol.bedrock.data.command.SoftEnumUpdateType;
 import com.nukkitx.protocol.bedrock.data.entity.EntityFlag;
 import com.nukkitx.protocol.bedrock.packet.*;
 import io.netty.channel.Channel;
@@ -1895,4 +1897,19 @@ public class GeyserSession implements GeyserConnection, GeyserCommandSource {
         sendUpstreamPacket(transferPacket);
         return true;
     }
+
+    public void addCommandEnum(String name, String... enums) {
+        softEnumPacket(name, SoftEnumUpdateType.ADD, enums);
+    }
+
+    public void removeCommandEnum(String name, String... enums) {
+        softEnumPacket(name, SoftEnumUpdateType.REMOVE, enums);
+    }
+
+    private void softEnumPacket(String name, SoftEnumUpdateType type, String... enums) {
+        UpdateSoftEnumPacket packet = new UpdateSoftEnumPacket();
+        packet.setType(type);
+        packet.setSoftEnum(new CommandEnumData(name, enums, true));
+        sendUpstreamPacket(packet);
+    }
 }

core/src/main/java/org/geysermc/geyser/translator/protocol/java/JavaCommandsTranslator.java

@@ -240,6 +240,7 @@ public class JavaCommandsTranslator extends PacketTranslator<ClientboundCommands
             case RESOURCE -> handleResource(context, ((ResourceProperties) node.getProperties()).getRegistryKey(), false);
             case RESOURCE_OR_TAG -> handleResource(context, ((ResourceProperties) node.getProperties()).getRegistryKey(), true);
             case DIMENSION -> context.session.getLevels();
+            case TEAM -> context.getTeams(); // Note: as of Java 1.19.3, objectives are currently parsed from the server
             default -> CommandParam.STRING;
         };
     }
@@ -271,6 +272,7 @@ public class JavaCommandsTranslator extends PacketTranslator<ClientboundCommands
         private Object biomesNoTags;
         private String[] blockStates;
         private String[] entityTypes;
+        private CommandEnumData teams;
 
         CommandBuilderContext(GeyserSession session) {
             this.session = session;
@@ -307,6 +309,14 @@ public class JavaCommandsTranslator extends PacketTranslator<ClientboundCommands
             }
             return (entityTypes = Registries.JAVA_ENTITY_IDENTIFIERS.get().keySet().toArray(new String[0]));
         }
+
+        private CommandEnumData getTeams() {
+            if (teams != null) {
+                return teams;
+            }
+            return (teams = new CommandEnumData("Geyser_Teams",
+                    session.getWorldCache().getScoreboard().getTeamNames(), true));
+        }
     }
 
     @Getter
@@ -376,7 +386,10 @@ public class JavaCommandsTranslator extends PacketTranslator<ClientboundCommands
                     CommandEnumData enumData = null;
                     CommandParam type = null;
                     boolean optional = this.paramNode.isExecutable();
-                    if (mappedType instanceof String[]) {
+                    if (mappedType instanceof CommandEnumData) {
+                        // Likely to specify isSoft, to be possibly updated later.
+                        enumData = (CommandEnumData) mappedType;
+                    } else if (mappedType instanceof String[]) {
                         enumData = new CommandEnumData(getEnumDataName(paramNode).toLowerCase(Locale.ROOT), (String[]) mappedType, false);
                     } else {
                         type = (CommandParam) mappedType;

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ netty = "4.1.80.Final"
 guava = "29.0-jre"
 gson = "2.3.1" # Provided by Spigot 1.8.8
 websocket = "1.5.1"
-protocol = "2.9.15-20221129.204554-2"
+protocol = "2.9.15-20230106.005737-3"
 raknet = "1.6.28-20220125.214016-6"
 mcauthlib = "d9d773e"
 mcprotocollib = "1.19.3-20230107.194116-10"