project rebrand

src/main/java/net/nuggetmc/ai/utils/PlayerUtils.java

@@ -1,9 +1,52 @@
 package net.nuggetmc.ai.utils;
 
+import net.nuggetmc.ai.TerminatorPlus;
 import org.bukkit.GameMode;
+import org.json.simple.JSONArray;
+import org.json.simple.JSONObject;
+import org.json.simple.parser.JSONParser;
+import org.json.simple.parser.ParseException;
+
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.HashSet;
+import java.util.Set;
 
 public class PlayerUtils {
+
     public static boolean isInvincible(GameMode mode) {
         return mode != GameMode.SURVIVAL && mode != GameMode.ADVENTURE && mode != null;
     }
+
+    private static final Set<String> USERNAME_CACHE = new HashSet<>();
+
+    public static String randomName() {
+        if (USERNAME_CACHE.isEmpty()) {
+            fillUsernameCache();
+        }
+
+        return MathUtils.getRandomSetElement(USERNAME_CACHE);
+    }
+
+    public static void fillUsernameCache() {
+        String file = TerminatorPlus.getInstance().getServer().getWorldContainer().getAbsolutePath();
+        file = file.substring(0, file.length() - 1) + "usercache.json";
+
+        JSONParser parser = new JSONParser();
+
+        try {
+            JSONArray array = (JSONArray) parser.parse(new FileReader(file));
+
+            for (Object obj : array) {
+                JSONObject jsonOBJ = (JSONObject) obj;
+                String username = (String) jsonOBJ.get("name");
+
+                USERNAME_CACHE.add(username);
+            }
+        }
+
+        catch (IOException | ParseException e) {
+            Debugger.log("Failed to fetch from the usercache.");
+        }
+    }
 }