#579 Updated for the stock counter to be updated on any hopper input

src/main/java/com/Acrobot/ChestShop/Listeners/Item/ItemMoveListener.java

@@ -1,11 +1,15 @@
 package com.Acrobot.ChestShop.Listeners.Item;
 
+import com.Acrobot.ChestShop.Configuration.Properties;
+import com.Acrobot.ChestShop.Listeners.Modules.StockCounterModule;
 import com.Acrobot.ChestShop.Signs.ChestShopSign;
 import org.bukkit.block.BlockState;
+import org.bukkit.block.Hopper;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.inventory.InventoryMoveItemEvent;
+import org.bukkit.inventory.InventoryHolder;
 
 import static com.Acrobot.Breeze.Utils.ImplementationAdapter.getHolder;
 
@@ -16,14 +20,15 @@ public class ItemMoveListener implements Listener {
 
     @EventHandler(ignoreCancelled = true, priority = EventPriority.HIGHEST)
     public static void onItemMove(InventoryMoveItemEvent event) {
-        if (event.getSource() == null || getHolder(event.getDestination(), false) instanceof BlockState) {
-            return;
-        }
+        InventoryHolder destinationHolder = getHolder(event.getDestination(), false);
+        InventoryHolder sourceHolder = getHolder(event.getSource(), false);
 
-        if (!ChestShopSign.isShopBlock(getHolder(event.getSource(), false))) {
-            return;
+        if (!(destinationHolder instanceof BlockState) && ChestShopSign.isShopBlock(sourceHolder)) {
+            event.setCancelled(true);
+        } else if (Properties.USE_STOCK_COUNTER && ChestShopSign.isShopBlock(destinationHolder) && sourceHolder instanceof Hopper) {
+            StockCounterModule.updateCounterOnItemMoveEvent(event.getItem(), destinationHolder);
         }
-
-        event.setCancelled(true);
     }
+
+
 }

src/main/java/com/Acrobot/ChestShop/Listeners/Modules/StockCounterModule.java

@@ -1,6 +1,7 @@
 package com.Acrobot.ChestShop.Listeners.Modules;
 
 import com.Acrobot.Breeze.Utils.InventoryUtil;
+import com.Acrobot.Breeze.Utils.MaterialUtil;
 import com.Acrobot.Breeze.Utils.QuantityUtil;
 import com.Acrobot.ChestShop.ChestShop;
 import com.Acrobot.ChestShop.Configuration.Properties;
@@ -10,6 +11,7 @@
 import com.Acrobot.ChestShop.Signs.ChestShopSign;
 import com.Acrobot.ChestShop.Utils.uBlock;
 import org.bukkit.Bukkit;
+import org.bukkit.block.Block;
 import org.bukkit.block.Container;
 import org.bukkit.block.Sign;
 import org.bukkit.event.EventHandler;
@@ -124,7 +126,13 @@ public static void onTransaction(final TransactionEvent event) {
         }
     }
 
-    public static void updateCounterOnQuantityLine(Sign sign, Inventory chestShopInventory) {
+    /**
+     * Update the stock counter on the sign's quantity line
+     * @param sign               The sign to update
+     * @param chestShopInventory The inventory to search in
+     * @param extraItems         The extra items to add in the search
+     */
+    public static void updateCounterOnQuantityLine(Sign sign, Inventory chestShopInventory, ItemStack... extraItems) {
         ItemStack itemTradedByShop = determineItemTradedByShop(sign);
         if (itemTradedByShop == null) {
             return;
@@ -139,10 +147,25 @@ public static void updateCounterOnQuantityLine(Sign sign, Inventory chestShopInv
 
         int numTradedItemsInChest = InventoryUtil.getAmount(itemTradedByShop, chestShopInventory);
 
+        for (ItemStack extraStack : extraItems) {
+            if (!MaterialUtil.equals(extraStack, itemTradedByShop)) {
+                continue;
+            }
+
+            numTradedItemsInChest += extraStack.getAmount();
+        }
+
         sign.setLine(QUANTITY_LINE, String.format(PRICE_LINE_WITH_COUNT, quantity, numTradedItemsInChest));
         sign.update(true);
     }
 
+    public static void updateCounterOnItemMoveEvent(ItemStack toAdd, InventoryHolder destinationHolder) {
+        Block shopBlock = ChestShopSign.getShopBlock(destinationHolder);
+        Sign connectedSign = uBlock.getConnectedSign(shopBlock);
+
+        updateCounterOnQuantityLine(connectedSign, destinationHolder.getInventory(), toAdd);
+    }
+
     public static void removeCounterFromQuantityLine(Sign sign) {
         int quantity;
         try {

src/main/java/com/Acrobot/ChestShop/Signs/ChestShopSign.java

@@ -21,6 +21,7 @@
 import org.bukkit.inventory.InventoryHolder;
 
 import java.util.Locale;
+import java.util.Optional;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -128,6 +129,16 @@ public static boolean isShopBlock(InventoryHolder holder) {
         return false;
     }
 
+    public static Block getShopBlock(InventoryHolder holder) {
+        if (holder instanceof DoubleChest) {
+            return Optional.ofNullable(getShopBlock(((DoubleChest) holder).getLeftSide()))
+                    .orElse(getShopBlock(((DoubleChest) holder).getRightSide()));
+        } else if (holder instanceof BlockState) {
+            return ((BlockState) holder).getBlock();
+        }
+        return null;
+    }
+
     public static boolean canAccess(Player player, Sign sign) {
         return hasPermission(player, Permission.OTHER_NAME_ACCESS, sign);
     }