From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Yannick Lamprecht <yannicklamprecht@live.de>
Date: Mon, 22 Jan 2024 13:27:30 +0100
Subject: [PATCH] ItemStack Tooltip API


diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
index 6fc7b20c0f8f14c1d6a47177f9ccf402e88153e6..1fabc9cf3bf7a05a2593f64eb3e41c21b5f4ee84 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
@@ -638,6 +638,21 @@ public final class CraftMagicNumbers implements UnsafeValues {
     }
     // Paper end - fix custom stats criteria creation
 
+    // Paper start - expose itemstack tooltip lines
+    @Override
+    public java.util.List<net.kyori.adventure.text.Component> computeTooltipLines(final ItemStack itemStack, final io.papermc.paper.inventory.tooltip.TooltipContext tooltipContext, final org.bukkit.entity.Player player) {
+        Preconditions.checkArgument(tooltipContext != null, "tooltipContext cannot be null");
+        net.minecraft.world.item.TooltipFlag.Default flag = tooltipContext.isAdvanced() ? net.minecraft.world.item.TooltipFlag.ADVANCED : net.minecraft.world.item.TooltipFlag.NORMAL;
+        if (tooltipContext.isCreative()) {
+            flag = flag.asCreative();
+        }
+        final java.util.List<net.minecraft.network.chat.Component> lines = CraftItemStack.asNMSCopy(itemStack).getTooltipLines(
+            net.minecraft.world.item.Item.TooltipContext.of(player == null ? net.minecraft.server.MinecraftServer.getServer().registryAccess() : ((org.bukkit.craftbukkit.entity.CraftPlayer) player).getHandle().level().registryAccess()),
+            player == null ? null : ((org.bukkit.craftbukkit.entity.CraftPlayer) player).getHandle(), flag);
+        return lines.stream().map(io.papermc.paper.adventure.PaperAdventure::asAdventure).toList();
+    }
+    // Paper end - expose itemstack tooltip lines
+
     @Override
     public String get(Class<?> aClass, String s) {
         if (aClass == Enchantment.class) {