Add placeholderrequirement

api/src/main/java/net/islandearth/rpgregions/requirements/PlaceholderRequirement.java

@@ -0,0 +1,47 @@
+package net.islandearth.rpgregions.requirements;
+
+import me.clip.placeholderapi.PlaceholderAPI;
+import org.bukkit.entity.Player;
+
+public class PlaceholderRequirement extends RegionRequirement {
+    
+    private String placeholder;
+    private String equal;
+    
+    public PlaceholderRequirement(String placeholder, String equal) {
+        this.placeholder = placeholder;
+        this.equal = equal;
+    }
+    
+    @Override
+    public boolean meetsRequirements(Player player) {
+        try {
+            int number = Integer.parseInt(equal);
+            int parsedNumber = Integer.parseInt(PlaceholderAPI.setPlaceholders(player, placeholder));
+            if (number >= parsedNumber) {
+                return true;
+            }
+        } catch (NumberFormatException e) {
+            return PlaceholderAPI.setPlaceholders(player, placeholder).equals(equal);
+        }
+        return false;
+    }
+    
+    @Override
+    public String getName() {
+        return "Placeholder";
+    }
+    
+    @Override
+    public String getText(Player player) {
+        return "placeholder " + placeholder;
+    }
+    
+    public String getPlaceholder() {
+        return placeholder;
+    }
+    
+    public String getEqual() {
+        return equal;
+    }
+}