Add messages.yml and functionality to purchase GUI

The plugin now has a functioning messages.yml that has the options to
set messages (improving customisability), as well as the shop now has a
working buy menu where u can see the price changes and what not.
Supports prices and rounding to 2 decimal places.

src/main/kotlin/pw.hamzantal.shopreborn/ClickListeners.kt

@@ -1,16 +1,44 @@
 package pw.hamzantal.shopreborn
 
-import hazae41.minecraft.kutils.bukkit.msg
+import org.bukkit.Bukkit
+import org.bukkit.Material
 import org.bukkit.entity.Player
+import org.bukkit.event.inventory.ClickType.*
 import org.bukkit.event.inventory.InventoryClickEvent
+import org.bukkit.event.inventory.InventoryCloseEvent
+import org.bukkit.inventory.Inventory
+import org.bukkit.inventory.ItemStack
+import kotlin.math.max
+import kotlin.math.min
+
+enum class PurchaseType { BUY, SELL }
+
+class PurchaseEvent(
+    val inv: Inventory,
+    val item: ItemStack,
+    val shop: ShopConfig,
+    val p: Player,
+    val block: ShopConfig.Item,
+    val type: PurchaseType
+)
+
+val purchases = mutableListOf<PurchaseEvent>()
+
+fun closeListener(e: InventoryCloseEvent) {
+    val purchase = purchases.firstOrNull { it.inv == e.inventory } ?: return
+    purchases -= purchase
+}
 
 fun baseListener(e: InventoryClickEvent) {
-    if (e.inventory == Configurations.main.inventory) {
+    if (e.inventory == GlobalConfig.main.inventory) {
         mainClick(e)
         return
     }
 
-    val shop = Configurations.shops.firstOrNull { it.inventories.contains(e.inventory)} ?: return
+    val purchase = purchases.firstOrNull { it.inv == e.inventory }
+    if (purchase != null) clickInventory(e, purchase)
+
+    val shop = GlobalConfig.shops.firstOrNull { it.inventories.contains(e.inventory) } ?: return
     shopClick(e, shop)
 }
 
@@ -18,7 +46,7 @@ fun mainClick(e: InventoryClickEvent) {
     e.isCancelled = true
     if (e.rawSlot > e.inventory.size) return
 
-    val main = Configurations.main
+    val main = GlobalConfig.main
     val p = e.whoClicked as Player
 
     val block = main.blocks.firstOrNull { it.slot == e.slot } ?: return
@@ -31,7 +59,7 @@ fun shopClick(e: InventoryClickEvent, shop: ShopConfig) {
     e.isCancelled = true
     if (e.rawSlot > e.inventory.size) return
 
-    val main = Configurations.main
+    val main = GlobalConfig.main
     val p = e.whoClicked as Player
 
     //Check Menu Buttons
@@ -47,7 +75,7 @@ fun shopClick(e: InventoryClickEvent, shop: ShopConfig) {
         return
     }
 
-    if(e.currentItem == main.buttons.previous) {
+    if (e.currentItem == main.buttons.previous) {
         val current = shop.inventories.indexOf(e.inventory)
         if (current == 0) return
         p.openInventory(shop.inventories[current - 1])
@@ -55,13 +83,91 @@ fun shopClick(e: InventoryClickEvent, shop: ShopConfig) {
 
     //Buy / Sell Item
     val block = shop.blocks.firstOrNull { it.item == e.currentItem } ?: return
+    if (block is ShopConfig.Command) {
+        TODO()
+    }
 
-    when(block) {
-        is ShopConfig.Item -> {
-            p.msg("Buying ${block.item.type.name} for ${block.buy}")
+    when (e.click) {
+        LEFT -> buy(e, p, shop, block as ShopConfig.Item)
+        RIGHT -> TODO()
+        MIDDLE -> TODO()
+        else -> return
+    }
+}
+
+fun clickInventory(e: InventoryClickEvent, pe: PurchaseEvent) {
+    e.isCancelled = true
+    val block = pe.block
+    val origin = block.item
+
+    val singleCost =
+        if (pe.type == PurchaseType.BUY) pe.block.buy / origin.amount
+        else pe.block.sell / origin.amount
+
+    val lore =
+        if (pe.type == PurchaseType.BUY) GlobalConfig.messages.buyLore
+        else GlobalConfig.messages.sellLore
+
+    when (e.currentItem) {
+        PurchaseItems.set1 -> {
+            pe.item.amount = 1
+            pe.item.setLore(lore.mixPlaceholder(price = singleCost))
+        }
+        PurchaseItems.sub10 -> {
+            val now = max(1, pe.item.amount - 10)
+            pe.item.amount = now
+            pe.item.setLore(lore.mixPlaceholder(price = singleCost * now))
         }
-        is ShopConfig.Command -> {
-            p.msg("Buying ${block.item.type.name} producing ${block.commands.joinToString(",")}")
+        PurchaseItems.sub1 -> {
+            val now = max(1, pe.item.amount - 1)
+            pe.item.amount = now
+            pe.item.setLore(lore.mixPlaceholder(price = singleCost * now))
         }
+        PurchaseItems.add1 -> {
+            val now = min(64, pe.item.amount + 1)
+            pe.item.amount = now
+            pe.item.setLore(lore.mixPlaceholder(price = singleCost * now))
         }
+        PurchaseItems.add10 -> {
+            val now = min(64, pe.item.amount + 10)
+            pe.item.amount = now
+            pe.item.setLore(lore.mixPlaceholder(price = singleCost * now))
+        }
+        PurchaseItems.set64 -> {
+            pe.item.amount = 64
+            pe.item.setLore(lore.mixPlaceholder(price = singleCost * 64))
+        }
+    }
+    pe.inv.setItem(22, pe.item)
+}
+
+val base = Array<ItemStack?>(54) { null }.apply {
+    set(18, PurchaseItems.set1)
+    set(19, PurchaseItems.sub10)
+    set(20, PurchaseItems.sub1)
+    set(24, PurchaseItems.add1)
+    set(25, PurchaseItems.add10)
+    set(26, PurchaseItems.set64)
+}
+
+fun Material.prettyName() = name.split("_").joinToString(" ") { it.toLowerCase().capitalize() }
+
+fun buy(e: InventoryClickEvent, p: Player, shop: ShopConfig, block: ShopConfig.Item) {
+    val item = e.currentItem.clone()
+    if (block.buy == -1.0) return
+
+    val name = if (item.itemMeta.hasDisplayName()) item.itemMeta.displayName else item.type.prettyName()
+
+    val inv = Bukkit.createInventory(null, 54, "&2Buying $name".c).apply {
+        contents = base.clone()
+
+        val buyLore = GlobalConfig.messages.buyLore.mixPlaceholder(price = block.buy)
+        setItem(22, e.currentItem.setLore(buyLore))
+        setItem(39, PurchaseItems.buyConfirm)
+        setItem(41, PurchaseItems.cancel)
+    }
+
+    p.openInventory(inv)
+    purchases.add(PurchaseEvent(inv, item, shop, p, block, PurchaseType.BUY))
 }
+

src/main/kotlin/pw.hamzantal.shopreborn/Configuration.kt

@@ -12,9 +12,10 @@ import java.io.File
 import kotlin.math.ceil
 import kotlin.math.max
 
-object Configurations {
+object GlobalConfig {
     var dataFolder = File("")
     lateinit var main: MainConfig
+    lateinit var messages: Messages
 
     val shops = mutableListOf<ShopConfig>()
 }
@@ -59,10 +60,10 @@ class MainConfig(file: File) : ConfigFile(file) {
     }
 
     fun addShops() {
-        Configurations.shops.addAll(shops!!.keys.map {
+        GlobalConfig.shops.addAll(shops!!.keys.map {
             ShopConfig(
                 it,
-                Configurations.dataFolder[shops!!.getString(it)]
+                GlobalConfig.dataFolder[shops!!.getString(it)]
             )
         })
     }
@@ -70,7 +71,7 @@ class MainConfig(file: File) : ConfigFile(file) {
 
 class ShopConfig(val name: String, file: File) : ConfigFile(file) {
     open class Block(val item: ItemStack)
-    class Item(item: ItemStack, val buy: Int, val sell: Int) : Block(item)
+    class Item(item: ItemStack, val buy: Double, val sell: Double) : Block(item)
     class Command(item: ItemStack, val asPlayer: Boolean, val commands: List<String>) : Block(item)
 
     init {
@@ -104,8 +105,8 @@ class ShopConfig(val name: String, file: File) : ConfigFile(file) {
         ?.map<ConfigurationSection, Block> {
             val type = it.getString("type")
 
-            val buy = it.getInt("buyPrice", -1)
-            val sell = it.getInt("sellPrice", -1)
+            val buy = it.getDouble("buyPrice", -1.0)
+            val sell = it.getDouble("sellPrice", -.01)
             val item = it.getConfigurationSection("item").asItem(buy, sell)
 
             when (type) {
@@ -128,6 +129,7 @@ class ShopConfig(val name: String, file: File) : ConfigFile(file) {
     val inventories = mutableListOf<Inventory>()
 
     val inventory: Inventory
+
     init {
         inventory = makeInventory(size, title, menuRow, blocks, 1)
         inventories += inventory
@@ -140,7 +142,7 @@ class ShopConfig(val name: String, file: File) : ConfigFile(file) {
 fun makeInventory(size: Int, title: String, menuRow: Int = -1, items: List<ShopConfig.Block>, page: Int): Inventory {
     return Bukkit.createInventory(null, size, title.c).apply {
         if (menuRow > 0) {
-            val buttons = Configurations.main.buttons
+            val buttons = GlobalConfig.main.buttons
             for (i in menuRow until menuRow + 9) {
                 setItem(i, buttons.pane)
             }
@@ -157,15 +159,17 @@ fun makeInventory(size: Int, title: String, menuRow: Int = -1, items: List<ShopC
     }
 }
 
-fun ConfigurationSection.asItem(buy: Int = -1, sell: Int = -1): ItemStack {
+fun ConfigurationSection.asItem(buy: Double = -1.0, sell: Double = -1.0): ItemStack {
     val material = Material.valueOf(getString("material").toUpperCase())
     val item = ItemStack(material, getInt("quantity", 1), getInt("damage", 0).toShort())
 
     item.itemMeta = item.itemMeta.apply {
         displayName = getString("name", "").c
         val configLore = getStringList("lore").map { it.c }.toMutableList()
-        if (buy > 0) configLore += "&fPurchase for $$buy".c
-        if (sell > 0) configLore += "&fSell for $$sell".c
+        val messages = GlobalConfig.messages
+
+        if (buy > 0) configLore += messages.buyLore.mixPlaceholder(price = buy)
+        if (sell > 0) configLore += messages.sellLore.mixPlaceholder(price = sell)
 
         lore = configLore
     }

src/main/kotlin/pw.hamzantal.shopreborn/Messages.kt

@@ -0,0 +1,44 @@
+package pw.hamzantal.shopreborn
+
+import hazae41.minecraft.kutils.bukkit.ConfigFile
+import java.io.File
+
+class Messages(file: File, pl: ShopReborn) : ConfigFile(file) {
+    val currency by string("currency", "$")
+
+    val buyLore by string("buyLore")
+    val sellLore by string("stringLore")
+    val itemLore by string("itemLore")
+
+    val set1 by string("set1")
+    val sub10 by string("sub10")
+    val sub1 by string("sub1")
+
+    val add1 by string("add1")
+    val add10 by string("add10")
+    val set64 by string("set64")
+
+    val sellConfirm by string("sell.confirm")
+    val sellAll by string("sell.sellAll")
+    val sellAllLore by string("sell.sellAllLore")
+
+    val buyConfirm by string("buy.confirm")
+
+    val cancel by string("cancel")
+
+    init {
+        if (!file.exists()) {
+            val messages = pl.getResource("messages.yml").bufferedReader().readLines().joinToString("\n")
+            file.createNewFile()
+            file.writeText(messages)
+        }
+    }
+}
+
+fun String.mixPlaceholder(amount: Int = 0, price: Double = 0.0): String =
+    replace("%AMOUNT%", amount.toString())
+        .replace(
+            "%PRICE%",
+            String.format("%s%.2f", GlobalConfig.messages.currency, price)
+        )
+        .c

src/main/kotlin/pw.hamzantal.shopreborn/PurchaseItems.kt

@@ -0,0 +1,47 @@
+package pw.hamzantal.shopreborn
+
+import org.bukkit.Material
+import org.bukkit.inventory.ItemStack
+
+object PurchaseItems {
+    fun paneStack(damage: Int, name: String): ItemStack {
+        return ItemStack(Material.STAINED_GLASS_PANE, 1, damage.toShort()).apply {
+            itemMeta = itemMeta.apply {
+                displayName = name.c
+            }
+        }
+    }
+
+    fun blockStack(damage: Int, name: String): ItemStack {
+        return ItemStack(Material.STAINED_GLASS, 1, damage.toShort()).apply {
+            itemMeta = itemMeta.apply {
+                displayName = name.c
+            }
+        }
+    }
+
+
+    val msgs = GlobalConfig.messages
+    val set1 = paneStack(14, msgs.set1)
+    val sub10 = paneStack(14, msgs.sub10)
+    val sub1 = paneStack(14, msgs.sub1)
+
+    val add1 = paneStack(5, msgs.add1)
+    val add10 = paneStack(5, msgs.add10)
+    val set64 = paneStack(5, msgs.set64)
+
+    val sellConfirm = blockStack(5, msgs.sellConfirm)
+    val sellAll = blockStack(5, msgs.sellAll)
+
+    val buyConfirm = blockStack(5, msgs.buyConfirm)
+
+    val cancel = blockStack(14, msgs.cancel)
+}
+
+fun ItemStack.setLore(s: String): ItemStack {
+    return apply {
+        itemMeta = itemMeta.apply {
+            lore = listOf(s.c)
+        }
+    }
+}

src/main/kotlin/pw.hamzantal.shopreborn/ShopReborn.kt

@@ -1,7 +1,6 @@
 package pw.hamzantal.shopreborn
 
 import hazae41.minecraft.kutils.bukkit.command
-import hazae41.minecraft.kutils.bukkit.info
 import hazae41.minecraft.kutils.bukkit.listen
 import hazae41.minecraft.kutils.get
 import org.bukkit.entity.Player
@@ -12,21 +11,23 @@ class ShopReborn : JavaPlugin() {
     override fun onEnable() {
         saveDefaultConfig()
 
-        Configurations.dataFolder = dataFolder
-        Configurations.main =
+        GlobalConfig.dataFolder = dataFolder
+        GlobalConfig.messages = Messages(dataFolder["messages.yml"], this)
+        GlobalConfig.main =
             MainConfig(dataFolder["config.yml"])
-        Configurations.main.addShops()
+        GlobalConfig.main.addShops()
 
         listen(callback = ::baseListener)
+        listen(callback = ::closeListener)
 
         command("shop") { sender, args ->
             if (sender !is Player) return@command
             if (args.isEmpty()) {
-                sender.openInventory(Configurations.main.inventory)
+                sender.openInventory(GlobalConfig.main.inventory)
                 return@command
             }
 
-            val shop = Configurations.shops.firstOrNull { it.name == args.component1() } ?: return@command
+            val shop = GlobalConfig.shops.firstOrNull { it.name == args.component1() } ?: return@command
             sender.openInventory(shop.inventory)
         }
     }

src/main/resources/messages.yml

@@ -0,0 +1,22 @@
+currency: "$"
+
+buyLore: "&6Buy price: &c%PRICE%"
+sellLore: "&6Sell price: &c%PRICE%"
+itemLore: "&6Left click to buy, Right click to sell"
+
+set1: "&c&lSet to 1"
+sub10: "&c&lRemove 10"
+sub1: "&c&lRemove 1"
+
+add1: "&a&lAdd 1"
+add10: "&a&lAdd 10"
+set64: "&a&lSet 64"
+
+# Confirm for selling/buying (after selecting the item)
+sell:
+  confirm: "&a&lConfirm"
+  sellAll: "&a&lSell all"
+  sellAllLore: "&7Sell all for &a%PRICE%"
+buy:
+  confirm: "&a&lConfirm"
+cancel: "&c&lCancel"