Rework listeners

src/main/java/com/alttd/playershops/config/Config.java

@@ -24,9 +24,17 @@ public class Config extends AbstractConfiguration {
     }
 
     public static int shopLimit = 100;
+    public static boolean usePermissionShopLimit = false;
     private static void shopSettings() {
         String path = "shop-settings.";
         shopLimit = config.getInt(path + "player-shop-limit", shopLimit);
+        usePermissionShopLimit = config.getBoolean(path + "use-permission-based-shop-limit", usePermissionShopLimit);
+    }
+
+    public static String shopLimitPermission = "shop.buildlimit";
+    private static void permissionSettings() {
+        String path = "permission.";
+        shopLimitPermission = config.getString(path + "build-limit", shopLimitPermission);
     }
 
 }

src/main/java/com/alttd/playershops/listener/PlayerListener.java

@@ -1,4 +1,68 @@
 package com.alttd.playershops.listener;
 
+import com.alttd.playershops.PlayerShops;
+import com.alttd.playershops.api.ShopHandler;
+import com.alttd.playershops.config.Config;
+import com.alttd.playershops.shop.AbstractShop;
+import org.bukkit.block.Block;
+import org.bukkit.block.Sign;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.block.SignChangeEvent;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.permissions.PermissionAttachmentInfo;
+
+import java.util.UUID;
+
 public class PlayerListener extends EventListener {
+
+    private final PlayerShops plugin;
+
+    public PlayerListener(PlayerShops plugin) {
+        this.plugin = plugin;
+        this.register(this.plugin);
+    }
+
+    @EventHandler(ignoreCancelled = true)
+    public void onPlayerJoin(PlayerJoinEvent event) {
+        if(!this.isRegistered || !Config.usePermissionShopLimit) return;
+
+        Player player = event.getPlayer();
+        if (!player.hasPermission(Config.shopLimitPermission)) return;
+
+        ShopHandler shopHandler = plugin.getShopHandler();
+        UUID uuid = player.getUniqueId();
+
+        // early return to not check this all the time, if this changes by rankup etc handle it in another event
+        if (shopHandler.getShopLimit(uuid) != Config.shopLimit) return;
+
+        int buildPermissionNumber = -1;
+
+        for (PermissionAttachmentInfo permInfo : player.getEffectivePermissions()) {
+            if (permInfo.getPermission().contains("shop.buildlimit.")) {
+                try {
+                    int tempNum = Integer.parseInt(permInfo.getPermission().substring(permInfo.getPermission().lastIndexOf(".") + 1));
+                    if (tempNum > buildPermissionNumber) {
+                        buildPermissionNumber = tempNum;
+                    }
+                } catch (Exception ignore) {}
+            }
+        }
+        if (buildPermissionNumber == -1)
+            shopHandler.addPlayerLimit(player.getUniqueId(), buildPermissionNumber);
+    }
+
+    @EventHandler(ignoreCancelled = true, priority = EventPriority.HIGHEST)
+    public void onSignChange(SignChangeEvent event) {
+        Block block = event.getBlock();
+
+        if (!(block.getState() instanceof Sign)) return;
+
+        AbstractShop shop = plugin.getShopHandler().getShop(block.getLocation());
+        if(shop == null) return;
+
+        if(shop.isInitialized()) event.setCancelled(true);
+    }
+
 }

src/main/java/com/alttd/playershops/listener/ShopListener.java

@@ -1,4 +1,13 @@
 package com.alttd.playershops.listener;
 
+import com.alttd.playershops.PlayerShops;
+
 public class ShopListener extends EventListener {
+
+    private final PlayerShops plugin;
+
+    public ShopListener(PlayerShops plugin) {
+        this.plugin = plugin;
+        this.register(this.plugin);
+    }
 }