Finishes the scrapper implementation

src/main/java/net/knarcraft/blacksmith/util/ItemHelper.java

@@ -8,7 +8,6 @@ import org.bukkit.inventory.CraftingRecipe;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.Recipe;
-import org.bukkit.inventory.SmithingTransformRecipe;
 import org.bukkit.inventory.meta.Damageable;
 import org.bukkit.inventory.meta.ItemMeta;
 import org.jetbrains.annotations.NotNull;
@@ -46,7 +45,11 @@ public final class ItemHelper {
      * @return <p>The max durability of the item</p>
      */
     public static short getMaxDurability(@NotNull ItemStack itemStack) {
-        return itemStack.getType().getMaxDurability();
+        if (itemStack.getItemMeta() instanceof Damageable) {
+            return itemStack.getType().getMaxDurability();
+        } else {
+            return 0;
+        }
     }
 
     /**
@@ -56,12 +59,11 @@ public final class ItemHelper {
      * @return <p>The durability of the item</p>
      */
     public static short getDurability(@NotNull ItemStack itemStack) {
-        Damageable damageable = (Damageable) itemStack.getItemMeta();
-        int maxDurability = getMaxDurability(itemStack);
-        if (damageable != null) {
+        if (itemStack.getItemMeta() instanceof Damageable damageable) {
+            int maxDurability = getMaxDurability(itemStack);
             return (short) (maxDurability - damageable.getDamage());
         } else {
-            return (short) maxDurability;
+            return 0;
         }
     }
 
@@ -72,8 +74,7 @@ public final class ItemHelper {
      * @return <p>The damage done to the item</p>
      */
     public static short getDamage(@NotNull ItemStack itemStack) {
-        Damageable damageable = (Damageable) itemStack.getItemMeta();
-        if (damageable != null) {
+        if (itemStack.getItemMeta() instanceof Damageable damageable) {
             return (short) damageable.getDamage();
         } else {
             return 0;
@@ -173,26 +174,49 @@ public final class ItemHelper {
      * @return <p>True if the item can be salvaged</p>
      */
     public static boolean isSalvageable(@NotNull Server server, @NotNull ItemStack item) {
-        for (Recipe recipe : server.getRecipesFor(item)) {
-            // Only crafting recipes, and smithing transform recipes (diamond -> netherite) are allowed.
-            if (recipe instanceof CraftingRecipe || recipe instanceof SmithingTransformRecipe &&
-                    item.getAmount() >= recipe.getResult().getAmount()) {
+        for (Recipe recipe : server.getRecipesFor(new ItemStack(item.getType(), item.getAmount()))) {
+            // Only crafting recipes are allowed.
+            if ((recipe instanceof CraftingRecipe) && item.getAmount() >= recipe.getResult().getAmount()) {
                 return true;
             }
         }
         return false;
     }
 
+    /**
+     * Gets the amount of an item that's required to salvage that item
+     *
+     * @param server <p>The server to get recipes from</p>
+     * @param item   <p>The item to check</p>
+     * @return <p>The number of items required for salvage, or -1 if the recipe was not found</p>
+     */
+    public static int getRequiredAmountForSalvage(@NotNull Server server, @NotNull ItemStack item) {
+        for (Recipe recipe : server.getRecipesFor(new ItemStack(item.getType(), item.getAmount()))) {
+            // Only crafting recipes are allowed.
+            if (recipe instanceof CraftingRecipe) {
+                return recipe.getResult().getAmount();
+            }
+        }
+        return -1;
+    }
+
     /**
      * Gets all materials matching the given material wildcard
      *
      * @param materialName <p>The material name or material wildcard to match</p>
+     * @param extended     <p>Whether to use an extended match, allowing any material</p>
      * @return <p>The matched material(s)</p>
      */
-    public static @NotNull List<Material> getWildcardMatch(@NotNull String materialName) {
+    public static @NotNull List<Material> getWildcardMatch(@NotNull String materialName, boolean extended) {
         String search = InputParsingHelper.regExIfy(materialName);
         List<Material> materials = new ArrayList<>();
-        for (Material material : ItemHelper.getAllReforgeAbleMaterials()) {
+        List<Material> all;
+        if (extended) {
+            all = List.of(Material.values());
+        } else {
+            all = ItemHelper.getAllReforgeAbleMaterials();
+        }
+        for (Material material : all) {
             if (material.name().matches(search)) {
                 materials.add(material);
             }
@@ -249,7 +273,7 @@ public final class ItemHelper {
     }
 
     /**
-     * Replaces smoth presets in the given list of strings
+     * Replaces smith presets in the given list of strings
      *
      * @param stringList <p>The value specified by a user</p>
      * @return <p>The value with smith presets replaced</p>