Add show_item rewriting to 1.20.5->1.20.3 (#931)

Author: FlorianMichael

common/src/main/java/com/viaversion/viabackwards/protocol/v1_20_5to1_20_3/Protocol1_20_5To1_20_3.java

@@ -23,6 +23,7 @@
 import com.viaversion.viabackwards.api.rewriters.text.JsonNBTComponentRewriter;
 import com.viaversion.viabackwards.protocol.v1_20_5to1_20_3.provider.TransferProvider;
 import com.viaversion.viabackwards.protocol.v1_20_5to1_20_3.rewriter.BlockItemPacketRewriter1_20_5;
+import com.viaversion.viabackwards.protocol.v1_20_5to1_20_3.rewriter.ComponentRewriter1_20_5;
 import com.viaversion.viabackwards.protocol.v1_20_5to1_20_3.rewriter.EntityPacketRewriter1_20_5;
 import com.viaversion.viabackwards.protocol.v1_20_5to1_20_3.storage.CookieStorage;
 import com.viaversion.viabackwards.protocol.v1_20_5to1_20_3.storage.RegistryDataStorage;
@@ -60,7 +61,6 @@
 import com.viaversion.viaversion.rewriter.ParticleRewriter;
 import com.viaversion.viaversion.rewriter.StatisticsRewriter;
 import com.viaversion.viaversion.rewriter.TagRewriter;
-import com.viaversion.viaversion.rewriter.text.ComponentRewriterBase;
 
 import static com.viaversion.viaversion.util.ProtocolUtil.packetTypeMap;
 
@@ -70,7 +70,7 @@ public final class Protocol1_20_5To1_20_3 extends BackwardsProtocol<ClientboundP
     private final EntityPacketRewriter1_20_5 entityRewriter = new EntityPacketRewriter1_20_5(this);
     private final BlockItemPacketRewriter1_20_5 itemRewriter = new BlockItemPacketRewriter1_20_5(this);
     private final ParticleRewriter<ClientboundPacket1_20_5> particleRewriter = new ParticleRewriter<>(this);
-    private final JsonNBTComponentRewriter<ClientboundPacket1_20_5> translatableRewriter = new JsonNBTComponentRewriter<>(this, ComponentRewriterBase.ReadType.NBT);
+    private final JsonNBTComponentRewriter<ClientboundPacket1_20_5> translatableRewriter = new ComponentRewriter1_20_5(this);
     private final TagRewriter<ClientboundPacket1_20_5> tagRewriter = new TagRewriter<>(this);
 
     public Protocol1_20_5To1_20_3() {

common/src/main/java/com/viaversion/viabackwards/protocol/v1_20_5to1_20_3/rewriter/ComponentRewriter1_20_5.java

@@ -0,0 +1,82 @@
+/*
+ * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards
+ * 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.viabackwards.protocol.v1_20_5to1_20_3.rewriter;
+
+import com.viaversion.nbt.tag.CompoundTag;
+import com.viaversion.nbt.tag.StringTag;
+import com.viaversion.viabackwards.api.BackwardsProtocol;
+import com.viaversion.viabackwards.api.rewriters.text.JsonNBTComponentRewriter;
+import com.viaversion.viaversion.api.connection.UserConnection;
+import com.viaversion.viaversion.api.minecraft.data.StructuredData;
+import com.viaversion.viaversion.api.minecraft.data.StructuredDataContainer;
+import com.viaversion.viaversion.api.minecraft.item.Item;
+import com.viaversion.viaversion.api.minecraft.item.StructuredItem;
+import com.viaversion.viaversion.api.type.types.version.Types1_20_5;
+import com.viaversion.viaversion.protocols.v1_20_3to1_20_5.packet.ClientboundPacket1_20_5;
+import com.viaversion.viaversion.util.SerializerVersion;
+import java.util.List;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public final class ComponentRewriter1_20_5 extends JsonNBTComponentRewriter<ClientboundPacket1_20_5> {
+
+    private final com.viaversion.viaversion.protocols.v1_20_3to1_20_5.rewriter.ComponentRewriter1_20_5<ClientboundPacket1_20_5> vvRewriter;
+
+    public ComponentRewriter1_20_5(final BackwardsProtocol<ClientboundPacket1_20_5, ?, ?, ?> protocol) {
+        super(protocol, ReadType.NBT);
+        vvRewriter = new com.viaversion.viaversion.protocols.v1_20_3to1_20_5.rewriter.ComponentRewriter1_20_5<>(protocol, Types1_20_5.STRUCTURED_DATA);
+    }
+
+    @Override
+    protected void handleShowItem(final UserConnection connection, final CompoundTag itemTag, @Nullable final CompoundTag componentsTag) {
+        super.handleShowItem(connection, itemTag, componentsTag);
+        if (componentsTag == null) {
+            return;
+        }
+
+        final StringTag idTag = itemTag.getStringTag("id");
+        if (idTag == null) {
+            return;
+        }
+
+        final List<StructuredData<?>> data = vvRewriter.toData(connection, componentsTag);
+        if (data.isEmpty()) {
+            return;
+        }
+
+        final int identifier = this.protocol.getMappingData().getFullItemMappings().id(idTag.getValue());
+
+        final StructuredItem structuredItem = new StructuredItem(identifier, 1, new StructuredDataContainer(data.toArray(StructuredData[]::new)));
+        final Item dataItem = protocol.getItemRewriter().handleItemToClient(connection, structuredItem);
+        if (dataItem.tag() == null) {
+            return;
+        }
+
+        itemTag.remove("components");
+        itemTag.put("tag", new StringTag(outputSerializerVersion().toSNBT(dataItem.tag())));
+    }
+
+    @Override
+    protected SerializerVersion inputSerializerVersion() {
+        return SerializerVersion.V1_20_5;
+    }
+
+    @Override
+    protected SerializerVersion outputSerializerVersion() {
+        return SerializerVersion.V1_20_3;
+    }
+}