Removes some redundant code

src/main/java/net/apunch/blacksmith/BlacksmithPlugin.java

@@ -1,7 +1,7 @@
 package net.apunch.blacksmith;
 
-import net.apunch.blacksmith.util.Setting;
-import net.apunch.blacksmith.util.Settings;
+import net.apunch.blacksmith.config.Setting;
+import net.apunch.blacksmith.config.Settings;
 import net.citizensnpcs.api.CitizensAPI;
 import net.citizensnpcs.api.util.DataKey;
 import net.milkbowl.vault.economy.Economy;
@@ -29,6 +29,8 @@ import java.util.ArrayList;
 import java.util.Objects;
 import java.util.logging.Level;
 
+import static net.apunch.blacksmith.util.Sanitizer.sanitizeItemName;
+
 /**
  * Blacksmith's main class
  */
@@ -209,7 +211,7 @@ public class BlacksmithPlugin extends JavaPlugin {
 
     private double getCost(ItemStack item, Player player) {
         DataKey root = config.getConfig().getKey("");
-        String itemName = item.getType().name().toLowerCase().replace('_', '-');
+        String itemName = sanitizeItemName(item.getType().name());
         double price;
         if (root.keyExists("base-prices." + itemName)) {
             price = root.getDouble("base-prices." + itemName);
@@ -237,16 +239,7 @@ public class BlacksmithPlugin extends JavaPlugin {
         }
 
         //Add the enchantment modifier for each enchantment on the item
-        double enchantmentModifier = Setting.ENCHANTMENT_MODIFIER.asDouble();
-        for (Enchantment enchantment : item.getEnchantments().keySet()) {
-            String enchantmentKey = "enchantment-modifiers." +
-                    enchantment.getKey().asString().toLowerCase().replace('_', '-');
-            if (root.keyExists(enchantmentKey)) {
-                price += root.getDouble(enchantmentKey) * item.getEnchantmentLevel(enchantment);
-            } else {
-                price += enchantmentModifier * item.getEnchantmentLevel(enchantment);
-            }
-        }
+        price += getEnchantmentCost(item, root);
         return price;
     }
 
@@ -293,16 +286,30 @@ public class BlacksmithPlugin extends JavaPlugin {
         double hyperPricePerDurability = hyperPrice / item.getType().getMaxDurability();
         price += getDurability(item) * hyperPricePerDurability;
 
-        double enchantmentModifier = Setting.ENCHANTMENT_MODIFIER.asDouble();
-        for (Enchantment enchantment : item2.getEnchantments().keySet()) {
-            if (root.keyExists("enchantment-modifiers." + enchantment.getKey().asString().toLowerCase().replace('_', '-'))) {
-                enchantmentModifier = root.getDouble("enchantment-modifiers."
-                        + enchantment.getKey().asString().toLowerCase().replace('_', '-'));
-            }
-            price += enchantmentModifier * item2.getEnchantmentLevel(enchantment);
-        }
+        price += getEnchantmentCost(item2, root);
 
         return price;
     }
 
+    /**
+     * Gets the cost resulting from all enchantments on the given item
+     *
+     * @param item <p>The item to calculate enchantment cost for</p>
+     * @param root <p>The data key containing the enchantment-modifiers option</p>
+     * @return <p>The resulting enchantment cost</p>
+     */
+    private double getEnchantmentCost(ItemStack item, DataKey root) {
+        double enchantmentModifier = Setting.ENCHANTMENT_MODIFIER.asDouble();
+        double price = 0;
+        for (Enchantment enchantment : item.getEnchantments().keySet()) {
+            String enchantmentKey = "enchantment-modifiers." + sanitizeItemName(enchantment.getKey().asString());
+            if (root.keyExists(enchantmentKey)) {
+                price += root.getDouble(enchantmentKey) * item.getEnchantmentLevel(enchantment);
+            } else {
+                price += enchantmentModifier * item.getEnchantmentLevel(enchantment);
+            }
+        }
+        return price;
+    }
+
 }

src/main/java/net/apunch/blacksmith/BlacksmithTrait.java

@@ -1,6 +1,7 @@
 package net.apunch.blacksmith;
 
-import net.apunch.blacksmith.util.Settings;
+import net.apunch.blacksmith.config.Settings;
+import net.apunch.blacksmith.util.Sanitizer;
 import net.citizensnpcs.api.CitizensAPI;
 import net.citizensnpcs.api.npc.NPC;
 import net.citizensnpcs.api.trait.Trait;
@@ -26,6 +27,8 @@ import java.util.Map;
 import java.util.Objects;
 import java.util.UUID;
 
+import static net.apunch.blacksmith.util.Sanitizer.sanitizedToItemName;
+
 /**
  * The class representing the Blacksmith NPC trait
  */
@@ -67,8 +70,9 @@ public class BlacksmithTrait extends Trait {
     @Override
     public void load(DataKey key) {
         for (DataKey sub : key.getRelative("reforge-able-items").getIntegerSubKeys()) {
-            if (Material.getMaterial(sub.getString("").toUpperCase().replace('-', '_')) != null) {
-                reforgeAbleItems.add(Material.getMaterial(sub.getString("").toUpperCase().replace('-', '_')));
+            Material material = Material.getMaterial(sanitizedToItemName(sub.getString("")));
+            if (material != null) {
+                reforgeAbleItems.add(material);
             }
         }
         config.loadVariables(key);
@@ -78,8 +82,8 @@ public class BlacksmithTrait extends Trait {
     public void save(DataKey key) {
         //Save all items the blacksmith knows how to reforge
         for (int i = 0; i < reforgeAbleItems.size(); i++) {
-            key.getRelative("reforge-able-items").setString(String.valueOf(i),
-                    reforgeAbleItems.get(i).name().toLowerCase().replace('_', '-'));
+            key.getRelative("reforge-able-items").setString(String.valueOf(i), Sanitizer.sanitizeItemName(
+                    reforgeAbleItems.get(i).name()));
         }
 
         //Save all other config values

src/main/java/net/apunch/blacksmith/ReforgeSession.java

@@ -1,6 +1,6 @@
 package net.apunch.blacksmith;
 
-import net.apunch.blacksmith.util.Settings;
+import net.apunch.blacksmith.config.Settings;
 import net.citizensnpcs.api.npc.NPC;
 import org.bukkit.NamespacedKey;
 import org.bukkit.enchantments.Enchantment;
@@ -14,7 +14,11 @@ import java.util.Calendar;
 import java.util.Objects;
 import java.util.Random;
 
-class ReforgeSession implements Runnable {
+/**
+ * A representation of the session between a player and a blacksmith
+ */
+public class ReforgeSession implements Runnable {
+
     private final BlacksmithTrait blacksmithTrait;
     private final Player player;
     private final NPC npc;
@@ -23,6 +27,14 @@ class ReforgeSession implements Runnable {
     private final Settings config;
     private static final String[] enchantments = new String[Enchantment.values().length];
 
+    /**
+     * Instantiates a new session
+     *
+     * @param blacksmithTrait <p>A reference to the blacksmith trait</p>
+     * @param player          <p>The player initiating the session</p>
+     * @param npc             <p>The Blacksmith NPC involved in the session</p>
+     * @param config          <p>The config to use for the session</p>
+     */
     ReforgeSession(BlacksmithTrait blacksmithTrait, Player player, NPC npc, Settings config) {
         this.blacksmithTrait = blacksmithTrait;
         this.player = player;
@@ -150,4 +162,5 @@ class ReforgeSession implements Runnable {
     public Player getPlayer() {
         return player;
     }
+
 }

src/main/java/net/apunch/blacksmith/config/Setting.java

@@ -1,4 +1,4 @@
-package net.apunch.blacksmith.util;
+package net.apunch.blacksmith.config;
 
 import java.util.Arrays;
 

src/main/java/net/apunch/blacksmith/config/Settings.java

@@ -1,4 +1,4 @@
-package net.apunch.blacksmith.util;
+package net.apunch.blacksmith.config;
 
 import net.apunch.blacksmith.BlacksmithPlugin;
 import net.citizensnpcs.api.util.DataKey;

src/main/java/net/apunch/blacksmith/util/Sanitizer.java

@@ -0,0 +1,29 @@
+package net.apunch.blacksmith.util;
+
+public final class Sanitizer {
+
+    private Sanitizer() {
+
+    }
+
+    /**
+     * Sanitizes an item name to the format used by this plugin
+     *
+     * @param itemName <p>The item name to sanitize</p>
+     * @return <p>The sanitized name</p>
+     */
+    public static String sanitizeItemName(String itemName) {
+        return itemName.toLowerCase().replace('_', '-');
+    }
+
+    /**
+     * Converts a sanitized item name to the original name
+     *
+     * @param itemName <p>The item name to convert</p>
+     * @return <p>The un-sanitized name</p>
+     */
+    public static String sanitizedToItemName(String itemName) {
+        return itemName.toUpperCase().replace('-', '_');
+    }
+
+}