Made items with InnateEnchantments be enchantable in the enchanting table

src/main/java/chronosacaria/mcdw/api/interfaces/IInnateEnchantment.java

@@ -2,7 +2,7 @@
 
 import chronosacaria.mcdw.Mcdw;
 import chronosacaria.mcdw.enums.SettingsID;
-import net.minecraft.enchantment.Enchantment;
+import net.minecraft.enchantment.*;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -41,4 +41,30 @@ public interface IInnateEnchantment {
         }
         return itemStack;
     }
+
+    /**
+     * Checks a stack if it only has enchantments that are lower or equal its InnateEnchantments,
+     * meaning enchantments had been added on top of the innate ones.
+     *
+     * Copyright 2023 DaFuqs
+     * <br/><br/>
+     * Used with Permission, modifications made to allow for checking whether innate enchantments are enabled or not.
+     * <br/><br/>
+     * The following code is from Spectrum and can be found here:<br/>
+     * <a href = "https://github.com/DaFuqs/Spectrum/blob/1.19-deeper-down/src/main/java/de/dafuqs/spectrum/items/Preenchanted.java#L13">Preenchanted#onlyHasPreEnchantments</a>
+     */
+    default boolean onlyHasInnateEnchantments(ItemStack stack) {
+        Map<Enchantment, Integer> innateEnchantments = getInnateEnchantments();
+        Map<Enchantment, Integer> stackEnchantments = EnchantmentHelper.get(stack);
+
+        for(Map.Entry<Enchantment, Integer> stackEnchantment : stackEnchantments.entrySet()) {
+            int innateLevel = innateEnchantments.getOrDefault(stackEnchantment.getKey(), 0);
+            if(stackEnchantment.getValue() > innateLevel) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
 }

src/main/java/chronosacaria/mcdw/mixin/mcdw/ItemStackMixin.java

@@ -1,5 +1,6 @@
 package chronosacaria.mcdw.mixin.mcdw;
 
+import chronosacaria.mcdw.api.interfaces.*;
 import chronosacaria.mcdw.api.util.CleanlinessHelper;
 import chronosacaria.mcdw.enums.SwordsID;
 import chronosacaria.mcdw.registries.ItemsRegistry;
@@ -14,7 +15,7 @@
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.*;
 
 import java.util.Map;
 import java.util.function.Consumer;
@@ -25,19 +26,30 @@ public abstract class ItemStackMixin {
     @Shadow public abstract int getDamage();
     @Shadow public abstract int getMaxDamage();
     @Shadow public abstract NbtList getEnchantments();
-
+    
     // When the Mechanised Sawblade breaks, it "becomes" the Broken Sawblade
     @Inject(at = @At("HEAD"), method = "damage(ILnet/minecraft/entity/LivingEntity;Ljava/util/function/Consumer;)V")
     public <T extends LivingEntity> void mcdw$damage(int amount, T entity, Consumer<T> breakCallback, CallbackInfo ci) {
         ItemStack itemStack = this.getItem().getDefaultStack();
         if (itemStack.getItem() == ItemsRegistry.SWORD_ITEMS.get(SwordsID.SWORD_MECHANIZED_SAWBLADE) && getDamage() + amount >= getMaxDamage()) {
             NbtList oldEnchantments = this.getEnchantments().copy();
             ItemStack brokenSawblade = new ItemStack(ItemsRegistry.SWORD_ITEMS.get(SwordsID.SWORD_BROKEN_SAWBLADE));
-            brokenSawblade.setSubNbt("Enchantments", oldEnchantments);
+            brokenSawblade.setSubNbt(ItemStack.ENCHANTMENTS_KEY, oldEnchantments);
             CleanlinessHelper.mcdw$dropItem(entity, brokenSawblade);
             Map<Enchantment, Integer> brokenSawbladeEnchantments = EnchantmentHelper.get(brokenSawblade);
             brokenSawbladeEnchantments.remove(Enchantments.FIRE_ASPECT);
             EnchantmentHelper.set(brokenSawbladeEnchantments, brokenSawblade);
         }
     }
+
+    // The enchantment table does not allow enchanting items that already have enchantments applied
+    // This mixin changes items, that only got their IInnateEnchantments to still be enchantable
+    @Inject(method = "isEnchantable()Z", at = @At(value = "INVOKE", target = "Lnet/minecraft/item/ItemStack;hasEnchantments()Z"), cancellable = true)
+    public void mcdw$isEnchantable(CallbackInfoReturnable<Boolean> cir) {
+        if (this.getItem() instanceof IInnateEnchantment iInnateEnchantment && iInnateEnchantment.onlyHasInnateEnchantments((ItemStack)(Object) this)) {
+            cir.setReturnValue(true);
+        }
+    }
+
+
 }