Refactor book synchronization and add custom book key handling

Revised logic for updating writable books to use a data-driven approach with persistent keys. Added `Keys` class for managing namespaced keys and improved item setup with custom enchantments and metadata flags. This enhances maintainability and ensures consistent behavior across inventories.

src/main/kotlin/com/lent/snapchat/Item.kt

@@ -1,8 +1,12 @@
 package com.lent.snapchat
 
 import com.github.supergluelib.foundation.util.ItemBuilder
+import org.bukkit.Bukkit
 import org.bukkit.Material
+import org.bukkit.enchantments.Enchantment
+import org.bukkit.inventory.ItemFlag
 import org.bukkit.inventory.meta.BookMeta
+import org.bukkit.persistence.PersistentDataType
 
 class Item {
     var snapbook = ItemBuilder(Material.WRITABLE_BOOK, "Snapchat App", 1)
@@ -12,8 +16,9 @@ class Item {
             meta.title = "Snapchat App"
             meta.author = "System"
             meta.pages = listOf("Welcome to Snapchat! Start writing your messages here!")
+            meta.addItemFlags(ItemFlag.HIDE_ENCHANTS)
+            meta.addEnchant(Enchantment.ARROW_DAMAGE, 1, true)
+            meta.persistentDataContainer.set(Main.Keys.CUSTOM_BOOK, PersistentDataType.BOOLEAN, true)
             itemMeta = meta
         }
-
-    val bookMeta = snapbook.itemMeta as BookMeta
-}
+}

src/main/kotlin/com/lent/snapchat/Keys.kt

@@ -0,0 +1,8 @@
+package com.lent.snapchat
+
+import com.lent.snapchat.Main.Companion.plugin
+import org.bukkit.NamespacedKey
+
+public class Keys {
+   public final val CUSTOM_BOOK: NamespacedKey = NamespacedKey(plugin,"CustomBook")
+}

src/main/kotlin/com/lent/snapchat/Main.kt

@@ -13,30 +13,27 @@ import revxrsal.commands.annotation.Command
 import revxrsal.commands.bukkit.annotation.CommandPermission
 
 class Main : JavaPlugin() {
-
     companion object {
         lateinit var plugin: Main private set
-        val item = Item()
+        lateinit var Keys: Keys
+        lateinit var item: Item
     }
-
-
     override fun onEnable() {
         plugin = this
+        Keys = Keys()
+        item = Item()
         val foundation = Foundations.setup(this)
         logger.info("Snapchat plugin has been enabled successfully!")
         val snapChatEvents = SnapChatEvents()
         getPluginManager().registerEvents(snapChatEvents, this)
         foundation.registerCommands(this)
 
     }
-
-
-
     @Command("snapchat")
     @CommandPermission("snapchat.conversation")
     fun onCommand(sender: CommandSender) {
         val player = sender as Player
         player.inventory.addItem(item.snapbook)
-     }
+    }
 
-}
+}

src/main/kotlin/com/lent/snapchat/SnapChatEvents.kt

@@ -1,28 +1,30 @@
 package com.lent.snapchat
 
+import com.lent.snapchat.Main.Companion.item
 import org.bukkit.Bukkit
+import org.bukkit.Material
 import org.bukkit.event.EventHandler
 import org.bukkit.event.Listener
 import org.bukkit.event.player.PlayerEditBookEvent
+import org.bukkit.inventory.meta.BookMeta
 
 class SnapChatEvents : Listener {
+
     @EventHandler
     fun onPlayerWrite(bookEvent: PlayerEditBookEvent) {
-        val player = bookEvent.player
         val updatedMeta = bookEvent.newBookMeta
-
         for (onlinePlayer in Bukkit.getOnlinePlayers()) {
-            if (onlinePlayer.inventory.contains(Main.item.snapbook)) {
-                val snapbook = Main.item.snapbook
-                val updatedBook = snapbook.clone()
-                val updatedBookMeta = updatedBook.itemMeta as org.bukkit.inventory.meta.BookMeta
-                updatedBookMeta.pages = updatedMeta.pages
-                updatedBook.itemMeta = updatedBookMeta
-
-                onlinePlayer.inventory.removeItem(snapbook)
-                onlinePlayer.inventory.addItem(updatedBook)
+            for (item in onlinePlayer.inventory.contents) {
+                val meta = item.itemMeta
+                if (item != null && item.type == Material.WRITABLE_BOOK) {
+                    if (meta is BookMeta && meta.persistentDataContainer.has(Main.Keys.CUSTOM_BOOK)) {
+                            val updatedBookMeta = item.itemMeta as BookMeta
+                            updatedBookMeta.pages = updatedMeta.pages
+                            item.itemMeta = updatedBookMeta
+                        }
+                }
             }
         }
 
     }
-}
+}