Add landmine item recipe

src/main/kotlin/dev/w1zzrd/spigot/landmines2/LandminePlugin.kt

@@ -1,19 +1,61 @@
 package dev.w1zzrd.spigot.landmines2
 
 import kr.entree.spigradle.annotations.SpigotPlugin
+import org.bukkit.Bukkit
+import org.bukkit.Material
+import org.bukkit.NamespacedKey
+import org.bukkit.enchantments.Enchantment
+import org.bukkit.enchantments.EnchantmentWrapper
+import org.bukkit.inventory.ItemFlag
+import org.bukkit.inventory.ItemStack
+import org.bukkit.inventory.ShapelessRecipe
 import org.bukkit.plugin.java.JavaPlugin
 import java.io.File
 
+private val field_acceptingNew = Enchantment::class.java.getDeclaredField("acceptingNew")
+
+private var isAcceptingNewEnchantments: Boolean
+    get() {
+        field_acceptingNew.isAccessible = true
+        return field_acceptingNew.get(null) as Boolean
+    }
+    set(value) {
+        field_acceptingNew.isAccessible = true
+        field_acceptingNew.set(null, value)
+    }
+
 @SpigotPlugin
 class LandminePlugin: JavaPlugin() {
+    private val recipeKey = NamespacedKey(this, "landmineRecipe")
+    private val enchantmentKey = NamespacedKey(this, "landmineEnchantment")
+    private lateinit var enchantment: Enchantment
     private var landmineManager: LandmineManager? = null
 
     override fun onEnable() {
         super.onEnable()
 
+        val ench = Enchantment.getByKey(enchantmentKey)
+        if (ench == null) {
+            enchantment = LandmineEnchantment(enchantmentKey)
+            isAcceptingNewEnchantments = true
+            Enchantment.registerEnchantment(enchantment)
+            isAcceptingNewEnchantments = false
+        } else {
+            enchantment = ench
+        }
+
+        val stack = ItemStack(Material.STONE_PRESSURE_PLATE)
+        val meta = stack.itemMeta!!
+        meta.addEnchant(enchantment, 1, true)
+        meta.itemFlags.add(ItemFlag.HIDE_ENCHANTS)
+        meta.setDisplayName("Landmine")
+        stack.itemMeta = meta
+
         saveDefaultConfig()
         landmineManager = LandmineManager(this, YamlFile(File(dataFolder, "data.yml")))
         landmineManager!!.onEnable()
+
+        Bukkit.addRecipe(ShapelessRecipe(recipeKey, stack).addIngredient(Material.STONE_PRESSURE_PLATE).addIngredient(Material.TNT))
     }
 
     override fun reloadConfig() {
@@ -23,6 +65,8 @@ class LandminePlugin: JavaPlugin() {
     }
 
     override fun onDisable() {
+        Bukkit.removeRecipe(recipeKey)
+
         landmineManager!!.onDisable()
         saveConfig()