ViaVersion/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_19_4to1_19_3/Protocol1_19_4To1_19_3.java

/*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
 * Copyright (C) 2016-2024 ViaVersion and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3;

import com.google.gson.JsonElement;
import com.viaversion.viaversion.api.connection.UserConnection;
import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_19_4;
import com.viaversion.viaversion.api.protocol.AbstractProtocol;
import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
import com.viaversion.viaversion.api.type.Type;
import com.viaversion.viaversion.api.type.types.misc.ParticleType;
import com.viaversion.viaversion.api.type.types.version.Types1_19_4;
import com.viaversion.viaversion.data.entity.EntityTrackerBase;
import com.viaversion.viaversion.protocols.protocol1_19_3to1_19_1.ClientboundPackets1_19_3;
import com.viaversion.viaversion.protocols.protocol1_19_3to1_19_1.ServerboundPackets1_19_3;
import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.data.MappingData;
import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.packets.EntityPackets;
import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.packets.InventoryPackets;
import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.storage.PlayerVehicleTracker;
import com.viaversion.viaversion.rewriter.CommandRewriter;
import com.viaversion.viaversion.rewriter.SoundRewriter;
import com.viaversion.viaversion.rewriter.StatisticsRewriter;
import com.viaversion.viaversion.rewriter.TagRewriter;
import com.viaversion.viaversion.util.ComponentUtil;
import java.nio.charset.StandardCharsets;
import java.util.Base64;

public final class Protocol1_19_4To1_19_3 extends AbstractProtocol<ClientboundPackets1_19_3, ClientboundPackets1_19_4, ServerboundPackets1_19_3, ServerboundPackets1_19_4> {

    public static final MappingData MAPPINGS = new MappingData();
    private final EntityPackets entityRewriter = new EntityPackets(this);
    private final InventoryPackets itemRewriter = new InventoryPackets(this);
    private final TagRewriter<ClientboundPackets1_19_3> tagRewriter = new TagRewriter<>(this);

    public Protocol1_19_4To1_19_3() {
        super(ClientboundPackets1_19_3.class, ClientboundPackets1_19_4.class, ServerboundPackets1_19_3.class, ServerboundPackets1_19_4.class);
    }

    @Override
    protected void registerPackets() {
        super.registerPackets();

        tagRewriter.registerGeneric(ClientboundPackets1_19_3.TAGS);
        new StatisticsRewriter<>(this).register(ClientboundPackets1_19_3.STATISTICS);

        final SoundRewriter<ClientboundPackets1_19_3> soundRewriter = new SoundRewriter<>(this);
        soundRewriter.register1_19_3Sound(ClientboundPackets1_19_3.ENTITY_SOUND);
        soundRewriter.register1_19_3Sound(ClientboundPackets1_19_3.SOUND);

        new CommandRewriter<ClientboundPackets1_19_3>(this) {
            @Override
            public void handleArgument(final PacketWrapper wrapper, final String argumentType) throws Exception {
                if (argumentType.equals("minecraft:time")) {
                    // Minimum
                    wrapper.write(Type.INT, 0);
                } else {
                    super.handleArgument(wrapper, argumentType);
                }
            }
        }.registerDeclareCommands1_19(ClientboundPackets1_19_3.DECLARE_COMMANDS);

        registerClientbound(ClientboundPackets1_19_3.SERVER_DATA, wrapper -> {
            JsonElement element = wrapper.read(Type.OPTIONAL_COMPONENT);
            if (element != null) {
                wrapper.write(Type.COMPONENT, element);
            } else {
                wrapper.write(Type.COMPONENT, ComponentUtil.emptyJsonComponent());
            }

            final String iconBase64 = wrapper.read(Type.OPTIONAL_STRING);
            byte[] iconBytes = null;
            if (iconBase64 != null && iconBase64.startsWith("data:image/png;base64,")) {
                iconBytes = Base64.getDecoder().decode(iconBase64.substring("data:image/png;base64,".length()).getBytes(StandardCharsets.UTF_8));
            }
            wrapper.write(Type.OPTIONAL_BYTE_ARRAY_PRIMITIVE, iconBytes);
        });
    }

    @Override
    protected void onMappingDataLoaded() {
        super.onMappingDataLoaded();
        EntityTypes1_19_4.initialize(this);
        Types1_19_4.PARTICLE.filler(this)
                .reader("block", ParticleType.Readers.BLOCK)
                .reader("block_marker", ParticleType.Readers.BLOCK)
                .reader("dust", ParticleType.Readers.DUST)
                .reader("falling_dust", ParticleType.Readers.BLOCK)
                .reader("dust_color_transition", ParticleType.Readers.DUST_TRANSITION)
                .reader("item", ParticleType.Readers.ITEM1_13_2)
                .reader("vibration", ParticleType.Readers.VIBRATION1_19)
                .reader("sculk_charge", ParticleType.Readers.SCULK_CHARGE)
                .reader("shriek", ParticleType.Readers.SHRIEK);
    }

    @Override
    public void init(final UserConnection user) {
        addEntityTracker(user, new EntityTrackerBase(user, EntityTypes1_19_4.PLAYER));

        user.put(new PlayerVehicleTracker());
    }

    @Override
    public MappingData getMappingData() {
        return MAPPINGS;
    }

    @Override
    public EntityPackets getEntityRewriter() {
        return entityRewriter;
    }

    @Override
    public InventoryPackets getItemRewriter() {
        return itemRewriter;
    }

    @Override
    public TagRewriter<ClientboundPackets1_19_3> getTagRewriter() {
        return tagRewriter;
    }
}