dynmap/fabric-1.17.1/src/main/java/org/dynmap/fabric_1_17_1/mixin/ServerPlayNetworkHandlerMixin.java

package org.dynmap.fabric_1_17_1.mixin;

import net.minecraft.server.filter.TextStream;
import net.minecraft.server.network.ServerPlayNetworkHandler;
import net.minecraft.server.network.ServerPlayerEntity;
import org.dynmap.fabric_1_17_1.event.ServerChatEvents;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;

@Mixin(ServerPlayNetworkHandler.class)
public abstract class ServerPlayNetworkHandlerMixin {
    @Shadow
    public ServerPlayerEntity player;

    @Inject(
            method = "handleMessage",
            at = @At(
                    value = "INVOKE",
                    target = "Lnet/minecraft/server/PlayerManager;broadcast(Lnet/minecraft/text/Text;Ljava/util/function/Function;Lnet/minecraft/network/MessageType;Ljava/util/UUID;)V",
                    shift = At.Shift.BEFORE
            )
    )
    public void onGameMessage(TextStream.Message message, CallbackInfo info) {
        ServerChatEvents.EVENT.invoker().onChatMessage(player, message.getRaw());
    }
}