Improve Item Rarity API

paper-api/src/main/java/io/papermc/paper/inventory/ItemRarity.java

@@ -0,0 +1,32 @@
+package io.papermc.paper.inventory;
+
+import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.text.format.TextColor;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @deprecated use {@link org.bukkit.inventory.ItemRarity} with {@link org.bukkit.inventory.meta.ItemMeta#getRarity()}
+ */
+@Deprecated(forRemoval = true, since = "1.20.5")
+public enum ItemRarity {
+
+    COMMON(NamedTextColor.WHITE),
+    UNCOMMON(NamedTextColor.YELLOW),
+    RARE(NamedTextColor.AQUA),
+    EPIC(NamedTextColor.LIGHT_PURPLE);
+
+    TextColor color;
+
+    ItemRarity(TextColor color) {
+        this.color = color;
+    }
+
+    /**
+     * Gets the color formatting associated with the rarity.
+     * @return
+     */
+    @NotNull
+    public TextColor getColor() {
+        return color;
+    }
+}

paper-api/src/main/java/org/bukkit/Material.java

@@ -4845,6 +4845,21 @@ public enum Material implements Keyed, Translatable, net.kyori.adventure.transla
     }
     // Paper end - add Translatable
 
+    // Paper start - item rarity API
+    /**
+     * Returns the item rarity for the item. The Material <b>MUST</b> be an Item not a block.
+     * Use {@link #isItem()} before this.
+     *
+     * @return the item rarity
+     * @deprecated use {@link org.bukkit.inventory.meta.ItemMeta#hasRarity()} and {@link org.bukkit.inventory.meta.ItemMeta#getRarity()}
+     */
+    @NotNull
+    @Deprecated(forRemoval = true, since = "1.20.5")
+    public io.papermc.paper.inventory.ItemRarity getItemRarity() {
+        return new org.bukkit.inventory.ItemStack(this).getRarity();
+    }
+    // Paper end - item rarity API
+
     /**
      * Do not use for any reason.
      *

paper-api/src/main/java/org/bukkit/inventory/ItemRarity.java

@@ -9,17 +9,32 @@ public enum ItemRarity {
     /**
      * White item name.
      */
-    COMMON,
+    COMMON(net.kyori.adventure.text.format.NamedTextColor.WHITE), // Paper
     /**
      * Yellow item name.
      */
-    UNCOMMON,
+    UNCOMMON(net.kyori.adventure.text.format.NamedTextColor.YELLOW), // Paper
     /**
      * Aqua item name.
      */
-    RARE,
+    RARE(net.kyori.adventure.text.format.NamedTextColor.AQUA), // Paper
     /**
      * Light purple item name.
      */
-    EPIC;
+    EPIC(net.kyori.adventure.text.format.NamedTextColor.LIGHT_PURPLE); // Paper
+    // Paper start - improve ItemRarity
+    private final net.kyori.adventure.text.format.NamedTextColor color;
+    ItemRarity(final net.kyori.adventure.text.format.NamedTextColor color) {
+        this.color = color;
+    }
+
+    /**
+     * Gets the color formatting associated with this rarity.
+     *
+     * @return the color
+     */
+    public net.kyori.adventure.text.format.@org.jetbrains.annotations.NotNull TextColor color() {
+        return this.color;
+    }
+    // Paper end
 }

paper-api/src/main/java/org/bukkit/inventory/ItemStack.java

@@ -994,5 +994,17 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
     public @NotNull String translationKey() {
         return Bukkit.getUnsafe().getTranslationKey(this);
     }
+
+    /**
+     * Gets the item rarity of the itemstack. The rarity can change based on enchantments.
+     *
+     * @return the itemstack rarity
+     * @deprecated Use {@link ItemMeta#hasRarity()} and {@link ItemMeta#getRarity()}
+     */
+    @NotNull
+    @Deprecated(forRemoval = true, since = "1.20.5")
+    public io.papermc.paper.inventory.ItemRarity getRarity() {
+        return io.papermc.paper.inventory.ItemRarity.valueOf(this.getItemMeta().getRarity().name());
+    }
     // Paper end
 }

paper-api/src/main/java/org/bukkit/inventory/ItemType.java

@@ -2418,4 +2418,13 @@ public interface ItemType extends Keyed, Translatable, net.kyori.adventure.trans
     @Override
     @NotNull String getTranslationKey();
     // Paper end - add Translatable
+
+    // Paper start - expand ItemRarity API
+    /**
+     * Returns the item rarity for the item.
+     *
+     * @return the item rarity (or null if none is set)
+     */
+    @Nullable ItemRarity getItemRarity();
+    // Paper end - expand ItemRarity API
 }