Paper/patches/server/0386-Paper-dumpitem-command.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 28 Jun 2020 19:27:20 -0400
Subject: [PATCH] Paper dumpitem command

Let's you quickly view the item in your hands NBT data

diff --git a/src/main/java/io/papermc/paper/command/PaperCommand.java b/src/main/java/io/papermc/paper/command/PaperCommand.java
index 69d093d3450931038ac3d27d7874060d13dc2225..27775df10a490ff75ca377e8373931738f1b817c 100644
--- a/src/main/java/io/papermc/paper/command/PaperCommand.java
+++ b/src/main/java/io/papermc/paper/command/PaperCommand.java
@@ -39,6 +39,7 @@ public final class PaperCommand extends Command {
         commands.put(Set.of("version"), new VersionCommand());
         commands.put(Set.of("dumpplugins"), new DumpPluginsCommand());
         commands.put(Set.of("syncloadinfo"), new SyncLoadInfoCommand());
+        commands.put(Set.of("dumpitem"), new DumpItemCommand());
 
         return commands.entrySet().stream()
             .flatMap(entry -> entry.getKey().stream().map(s -> Map.entry(s, entry.getValue())))
diff --git a/src/main/java/io/papermc/paper/command/subcommands/DumpItemCommand.java b/src/main/java/io/papermc/paper/command/subcommands/DumpItemCommand.java
new file mode 100644
index 0000000000000000000000000000000000000000..efc4ec58ab4b3ceefd66b714d286a6187babc724
--- /dev/null
+++ b/src/main/java/io/papermc/paper/command/subcommands/DumpItemCommand.java
@@ -0,0 +1,94 @@
+package io.papermc.paper.command.subcommands;
+
+import io.papermc.paper.adventure.PaperAdventure;
+import io.papermc.paper.command.PaperSubcommand;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.ComponentLike;
+import net.kyori.adventure.text.JoinConfiguration;
+import net.kyori.adventure.text.TextComponent;
+import net.minecraft.core.Registry;
+import net.minecraft.core.RegistryAccess;
+import net.minecraft.core.component.DataComponentPatch;
+import net.minecraft.core.component.DataComponentType;
+import net.minecraft.core.registries.Registries;
+import net.minecraft.nbt.NbtOps;
+import net.minecraft.nbt.NbtUtils;
+import net.minecraft.nbt.Tag;
+import net.minecraft.resources.RegistryOps;
+import net.minecraft.world.item.ItemStack;
+import org.bukkit.command.CommandSender;
+import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+import org.bukkit.entity.Player;
+import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.framework.qual.DefaultQualifier;
+
+import static net.kyori.adventure.text.Component.join;
+import static net.kyori.adventure.text.Component.text;
+import static net.kyori.adventure.text.Component.textOfChildren;
+import static net.kyori.adventure.text.event.ClickEvent.copyToClipboard;
+import static net.kyori.adventure.text.format.NamedTextColor.AQUA;
+import static net.kyori.adventure.text.format.NamedTextColor.GRAY;
+import static net.kyori.adventure.text.format.NamedTextColor.RED;
+import static net.kyori.adventure.text.format.NamedTextColor.WHITE;
+import static net.kyori.adventure.text.format.NamedTextColor.YELLOW;
+import static net.kyori.adventure.text.format.TextDecoration.ITALIC;
+
+@DefaultQualifier(NonNull.class)
+public final class DumpItemCommand implements PaperSubcommand {
+    @Override
+    public boolean execute(final CommandSender sender, final String subCommand, final String[] args) {
+        this.doDumpItem(sender);
+        return true;
+    }
+
+    private void doDumpItem(final CommandSender sender) {
+        if (!(sender instanceof final Player player)) {
+            sender.sendMessage("Only players can use this command");
+            return;
+        }
+        final ItemStack itemStack = CraftItemStack.asNMSCopy(player.getInventory().getItemInMainHand());
+        final TextComponent.Builder visualOutput = Component.text();
+        final StringBuilder itemCommandBuilder = new StringBuilder();
+        final String itemName = itemStack.getItemHolder().unwrapKey().orElseThrow().location().toString();
+        itemCommandBuilder.append(itemName);
+        visualOutput.append(text(itemName, YELLOW)); // item type
+        final DataComponentPatch patch = itemStack.getComponentsPatch();
+
+        final RegistryAccess.Frozen access = ((CraftServer) sender.getServer()).getServer().registryAccess();
+        final RegistryOps<Tag> ops = access.createSerializationContext(NbtOps.INSTANCE);
+        final Registry<DataComponentType<?>> registry = access.registryOrThrow(Registries.DATA_COMPONENT_TYPE);
+        if (!patch.isEmpty()) {
+            visualOutput.append(text("[", WHITE));
+            itemCommandBuilder.append("[");
+            final List<ComponentLike> componentComponents = new ArrayList<>();
+            final List<String> commandComponents = new ArrayList<>();
+            for (final Map.Entry<DataComponentType<?>, Optional<?>> entry : patch.entrySet()) {
+                final String path = registry.getResourceKey(entry.getKey()).orElseThrow().location().getPath();
+                if (entry.getValue().isEmpty()) {
+                    componentComponents.add(text().append(text('!', RED), text(path, AQUA)));
+                    commandComponents.add("!" + path);
+                } else {
+                    final Tag serialized = (Tag) ((DataComponentType) entry.getKey()).codecOrThrow().encodeStart(ops, entry.getValue().get()).getOrThrow();
+                    componentComponents.add(textOfChildren(
+                        text(path, AQUA),
+                        text("=", WHITE),
+                        PaperAdventure.asAdventure(NbtUtils.toPrettyComponent(serialized))
+                    ));
+                    commandComponents.add(path + "=" + serialized.getAsString());
+                }
+
+            }
+            visualOutput
+                .append(join(JoinConfiguration.separator(text(",", WHITE)), componentComponents))
+                .append(text("]", WHITE));
+            itemCommandBuilder.append(String.join(",", commandComponents)).append("]");
+        }
+        final Component hoverMsg = text("Click to copy item definition to clipboard for use with /pgive", GRAY, ITALIC);
+        player.sendMessage(visualOutput.build().compact().hoverEvent(hoverMsg).clickEvent(copyToClipboard(itemCommandBuilder.toString())));
+    }
+}