Fix duplicate enchants

build.gradle

@@ -4,7 +4,7 @@ plugins {
 }
 
 group = 'com.kasetoatz'
-version = '1.0'
+version = '1.2'
 
 repositories {
     mavenCentral()
@@ -23,7 +23,7 @@ tasks {
         // Configure the Minecraft version for our task.
         // This is the only required configuration besides applying the plugin.
         // Your plugin's jar (or shadowJar if present) will be used automatically.
-        minecraftVersion("1.21")
+        minecraftVersion("1.21.8")
     }
 }
 

src/main/java/com/kasetoatz/superArmor/SuperArmor.java

@@ -15,6 +15,8 @@ import org.bukkit.inventory.view.AnvilView;
 import org.bukkit.plugin.java.JavaPlugin;
 
 import java.util.Map;
+import java.util.Objects;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import static com.kasetoatz.superArmor.Multiplier.multipliers;
@@ -128,6 +130,10 @@ public final class SuperArmor extends JavaPlugin implements Listener {
             getEnchants(right).forEach((enchant, level) -> {
                 if (isValidEnchant(left, enchant))
                 {
+                    if (Objects.equals(getEnchants(left).getOrDefault(enchant, -1), level))
+                    {
+                        level = Math.min(enchant.getMaxLevel(), level + 1);
+                    }
                     if (result.getItemMeta() instanceof EnchantmentStorageMeta meta)
                     {
                         meta.addStoredEnchant(enchant, level, true);

src/main/resources/plugin.yml

@@ -1,4 +1,4 @@
 name: SuperArmor
-version: '1.1'
+version: '1.2'
 main: com.kasetoatz.superArmor.SuperArmor
 api-version: '1.21'