Make Admin Shops use containers if available (Resolves #402)

Admin Shops can now be stocked the same way as player shops if a valid
 shop container is nearby. If no container is nearby it will just work
 as an unlimited shop.

This behaviour can be disabled with the FORCE_UNLIMITED_ADMIN_SHOP
 config option so that an admin shop is unlimited even though a valid
 container is next to it.

src/main/java/com/Acrobot/ChestShop/Configuration/Properties.java

@@ -170,6 +170,9 @@ public class Properties {
     @ConfigurationComment("First line of your Admin Shop's sign should look like this:")
     public static String ADMIN_SHOP_NAME = "Admin Shop";
 
+    @ConfigurationComment("Make all admin shops be unlimited even if they have a shop container at the sign")
+    public static boolean FORCE_UNLIMITED_ADMIN_SHOP = false;
+
     @ConfigurationComment("The name of the economy account which Admin Shops should use and to which all taxes will go")
     public static String SERVER_ECONOMY_ACCOUNT = "";
 

src/main/java/com/Acrobot/ChestShop/Events/Protection/BuildPermissionEvent.java

@@ -6,6 +6,8 @@ import org.bukkit.event.Cancellable;
 import org.bukkit.event.Event;
 import org.bukkit.event.HandlerList;
 
+import javax.annotation.Nullable;
+
 /**
  * @author Acrobot
  */
@@ -17,7 +19,7 @@ public class BuildPermissionEvent extends Event implements Cancellable {
 
     private boolean allowed = true;
 
-    public BuildPermissionEvent(Player player, Location chest, Location sign) {
+    public BuildPermissionEvent(Player player, @Nullable Location chest, Location sign) {
         this.player = player;
         this.chest = chest;
         this.sign = sign;
@@ -27,7 +29,7 @@ public class BuildPermissionEvent extends Event implements Cancellable {
         return player;
     }
 
-    public Location getChest() {
+    public @Nullable Location getChest() {
         return chest;
     }
 

src/main/java/com/Acrobot/ChestShop/Listeners/Block/Break/SignBreak.java

@@ -165,11 +165,7 @@ public class SignBreak implements Listener {
     }
 
     public static void sendShopDestroyedEvent(Sign sign, Player player) {
-        Container connectedContainer = null;
+        Container connectedContainer = uBlock.findConnectedContainer(sign.getBlock());
-
-        if (!ChestShopSign.isAdminShop(sign)) {
-            connectedContainer = uBlock.findConnectedContainer(sign.getBlock());
-        }
 
         Event event = new ShopDestroyedEvent(player, sign, connectedContainer);
         ChestShop.callEvent(event);

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

@@ -46,7 +46,8 @@ public class StockCounterModule implements Listener {
             event.setSignLine(QUANTITY_LINE, Integer.toString(quantity));
         }
 
-        if (!Properties.USE_STOCK_COUNTER || ChestShopSign.isAdminShop(event.getSignLine(NAME_LINE))) {
+        if (!Properties.USE_STOCK_COUNTER
+                || (Properties.FORCE_UNLIMITED_ADMIN_SHOP && ChestShopSign.isAdminShop(event.getSignLine(NAME_LINE)))) {
             return;
         }
 
@@ -71,11 +72,8 @@ public class StockCounterModule implements Listener {
         }
 
         for (Sign shopSign : uBlock.findConnectedShopSigns(event.getInventory().getHolder())) {
-            if (ChestShopSign.isAdminShop(shopSign)) {
+            if (!Properties.USE_STOCK_COUNTER
-                return;
+                    || (Properties.FORCE_UNLIMITED_ADMIN_SHOP && ChestShopSign.isAdminShop(shopSign))) {
-            }
-
-            if (!Properties.USE_STOCK_COUNTER) {
                 if (QuantityUtil.quantityLineContainsCounter(shopSign.getLine(QUANTITY_LINE))) {
                     removeCounterFromQuantityLine(shopSign);
                 }
@@ -111,7 +109,7 @@ public class StockCounterModule implements Listener {
             return;
         }
 
-        if (ChestShopSign.isAdminShop(event.getSign())) {
+        if (Properties.FORCE_UNLIMITED_ADMIN_SHOP && ChestShopSign.isAdminShop(event.getSign())) {
             return;
         }
 

src/main/java/com/Acrobot/ChestShop/Listeners/Player/PlayerInteract.java

@@ -19,9 +19,7 @@ import com.Acrobot.ChestShop.Utils.uBlock;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.GameMode;
-import org.bukkit.Material;
 import org.bukkit.block.Block;
-import org.bukkit.block.BlockState;
 import org.bukkit.block.Container;
 import org.bukkit.block.Sign;
 import org.bukkit.entity.Player;
@@ -232,7 +230,11 @@ public class PlayerInteract implements Listener {
 
         ItemStack[] items = InventoryUtil.getItemsStacked(item);
 
-        if (adminShop) {
+        // Create virtual admin inventory if
+        // - it's an admin shop
+        // - there is no container for the shop sign
+        // - the config doesn't force unlimited admin shop stock
+        if (adminShop && (ownerInventory == null || Properties.FORCE_UNLIMITED_ADMIN_SHOP)) {
             ownerInventory = new AdminInventory(action == buy ? Arrays.stream(items).map(ItemStack::clone).toArray(ItemStack[]::new) : new ItemStack[0]);
         }
 

src/main/java/com/Acrobot/ChestShop/Listeners/PostTransaction/EmptyShopDeleter.java

@@ -27,9 +27,13 @@ public class EmptyShopDeleter implements Listener {
             return;
         }
 
-        Inventory ownerInventory = event.getOwnerInventory();
         Sign sign = event.getSign();
-        Container connectedContainer = uBlock.findConnectedContainer(sign);
+
+        if (ChestShopSign.isAdminShop(sign)) {
+            return;
+        }
+
+        Inventory ownerInventory = event.getOwnerInventory();
 
         if (!shopShouldBeRemoved(ownerInventory, event.getStock())) {
             return;
@@ -39,6 +43,8 @@ public class EmptyShopDeleter implements Listener {
             return;
         }
 
+        Container connectedContainer = uBlock.findConnectedContainer(sign);
+
         ShopDestroyedEvent destroyedEvent = new ShopDestroyedEvent(null, event.getSign(), connectedContainer);
         ChestShop.callEvent(destroyedEvent);
 
@@ -62,7 +68,7 @@ public class EmptyShopDeleter implements Listener {
     }
 
     private static boolean shopShouldBeRemoved(Inventory inventory, ItemStack[] stock) {
-        if (Properties.REMOVE_EMPTY_SHOPS && !ChestShopSign.isAdminShop(inventory)) {
+        if (Properties.REMOVE_EMPTY_SHOPS) {
             if (Properties.ALLOW_PARTIAL_TRANSACTIONS) {
                 for (ItemStack itemStack : stock) {
                     if (inventory.containsAtLeast(itemStack, 1)) {

src/main/java/com/Acrobot/ChestShop/Listeners/PreShopCreation/ChestChecker.java

@@ -25,14 +25,12 @@ public class ChestChecker implements Listener {
     public static void onPreShopCreation(PreShopCreationEvent event) {
         String nameLine = event.getSignLine(NAME_LINE);
 
-        if (ChestShopSign.isAdminShop(nameLine)) {
-            return;
-        }
-
         Container connectedContainer = uBlock.findConnectedContainer(event.getSign().getBlock());
 
         if (connectedContainer == null) {
-            event.setOutcome(NO_CHEST);
+            if (!ChestShopSign.isAdminShop(nameLine)) {
+                event.setOutcome(NO_CHEST);
+            }
             return;
         }
 

src/main/java/com/Acrobot/ChestShop/Listeners/PreShopCreation/TerrainChecker.java

@@ -3,9 +3,7 @@ package com.Acrobot.ChestShop.Listeners.PreShopCreation;
 import com.Acrobot.ChestShop.ChestShop;
 import com.Acrobot.ChestShop.Events.PreShopCreationEvent;
 import com.Acrobot.ChestShop.Events.Protection.BuildPermissionEvent;
-import com.Acrobot.ChestShop.Permission;
 import com.Acrobot.ChestShop.Security;
-import com.Acrobot.ChestShop.Signs.ChestShopSign;
 import com.Acrobot.ChestShop.Utils.uBlock;
 import org.bukkit.Location;
 import org.bukkit.block.Container;
@@ -14,8 +12,6 @@ import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 
 import static com.Acrobot.ChestShop.Events.PreShopCreationEvent.CreationOutcome.NO_PERMISSION_FOR_TERRAIN;
-import static com.Acrobot.ChestShop.Permission.ADMIN;
-import static com.Acrobot.ChestShop.Signs.ChestShopSign.NAME_LINE;
 
 /**
  * @author Acrobot
@@ -24,18 +20,8 @@ public class TerrainChecker implements Listener {
 
     @EventHandler
     public static void onPreShopCreation(PreShopCreationEvent event) {
-        String nameLine = event.getSignLine(NAME_LINE);
-
-        if (ChestShopSign.isAdminShop(nameLine)) {
-            return;
-        }
-
         Player player = event.getPlayer();
 
-        if (Permission.has(player, ADMIN)) {
-            return;
-        }
-
         if (!Security.canPlaceSign(player, event.getSign())) {
             event.setOutcome(NO_PERMISSION_FOR_TERRAIN);
             return;