net.minestom.server.adventure.provider.NBTLegacyHoverEventSerializer Maven / Gradle / Ivy

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1.20.4 Lightweight Minecraft server
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package net.minestom.server.adventure.provider;

import net.kyori.adventure.key.Key;
import net.kyori.adventure.nbt.CompoundBinaryTag;
import net.kyori.adventure.nbt.api.BinaryTagHolder;
import net.kyori.adventure.text.Component;
import net.kyori.adventure.text.event.HoverEvent;
import net.kyori.adventure.text.serializer.json.LegacyHoverEventSerializer;
import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer;
import net.kyori.adventure.util.Codec;
import net.minestom.server.adventure.MinestomAdventure;
import org.jetbrains.annotations.NotNull;

import java.io.IOException;
import java.util.Objects;
import java.util.UUID;

final class NBTLegacyHoverEventSerializer implements LegacyHoverEventSerializer {
    static final NBTLegacyHoverEventSerializer INSTANCE = new NBTLegacyHoverEventSerializer();

    private static final String ITEM_TYPE = "id", ITEM_COUNT = "Count", ITEM_TAG = "tag";
    private static final String ENTITY_TYPE = "type", ENTITY_NAME = "name", ENTITY_ID = "id";

    private NBTLegacyHoverEventSerializer() {
    }

    @Override
    public HoverEvent.@NotNull ShowItem deserializeShowItem(@NotNull Component input) throws IOException {
        final String raw = PlainTextComponentSerializer.plainText().serialize(input);
        // attempt the parse
        final CompoundBinaryTag contents = MinestomAdventure.NBT_CODEC.decode(raw);
        final CompoundBinaryTag tag = contents.getCompound(ITEM_TAG);

        // create the event
        return HoverEvent.ShowItem.showItem(
                Key.key(contents.getString(ITEM_TYPE, "")),
                contents.getByte(ITEM_COUNT, (byte) 1),
                tag.size() == 0 ? null : BinaryTagHolder.encode(tag, MinestomAdventure.NBT_CODEC)
        );
    }

    @Override
    public HoverEvent.@NotNull ShowEntity deserializeShowEntity(@NotNull Component input, Codec.Decoder componentDecoder) throws IOException {
        final String raw = PlainTextComponentSerializer.plainText().serialize(input);
        final CompoundBinaryTag contents = MinestomAdventure.NBT_CODEC.decode(raw);
        return HoverEvent.ShowEntity.showEntity(
                Key.key(contents.getString(ENTITY_TYPE, "")),
                UUID.fromString(Objects.requireNonNullElse(contents.getString(ENTITY_ID), "")),
                componentDecoder.decode(Objects.requireNonNullElse(contents.getString(ENTITY_NAME), ""))
        );
    }

    @Override
    public @NotNull Component serializeShowItem(HoverEvent.@NotNull ShowItem input) throws IOException {
        CompoundBinaryTag.Builder tag = CompoundBinaryTag.builder();
        tag.putString(ITEM_TYPE, input.item().asString());
        tag.putByte(ITEM_COUNT, (byte) input.count());
        final BinaryTagHolder nbt = input.nbt();
        if (nbt != null) tag.put(ITEM_TAG, nbt.get(MinestomAdventure.NBT_CODEC));
        return Component.text(MinestomAdventure.NBT_CODEC.encode(tag.build()));
    }

    @Override
    public @NotNull Component serializeShowEntity(HoverEvent.@NotNull ShowEntity input, Codec.Encoder componentEncoder) throws IOException {
        CompoundBinaryTag.Builder tag = CompoundBinaryTag.builder();
        tag.putString(ENTITY_ID, input.id().toString());
        tag.putString(ENTITY_TYPE, input.type().asString());
        final Component name = input.name();
        if (name != null) tag.putString(ENTITY_NAME, componentEncoder.encode(name));
        return Component.text(MinestomAdventure.NBT_CODEC.encode(tag.build()));
    }
}