fix: make jsonObject in PersistentDataUtilities synchronous (hopefully)

src/main/java/me/chayapak1/chomens_bot/plugins/FilterPlugin.java

@@ -25,8 +25,8 @@ public class FilterPlugin extends PlayersPlugin.Listener {
     private final Gson gson = new Gson();
 
     static {
-        if (PersistentDataUtilities.jsonObject.has("filters")) {
-            filteredPlayers = PersistentDataUtilities.jsonObject.get("filters").getAsJsonArray();
+        if (PersistentDataUtilities.has("filters")) {
+            filteredPlayers = PersistentDataUtilities.get("filters").getAsJsonArray();
         }
     }
 

src/main/java/me/chayapak1/chomens_bot/plugins/IPFilterPlugin.java

@@ -15,8 +15,8 @@ public class IPFilterPlugin extends PlayersPlugin.Listener {
     public static JsonArray filteredIPs = new JsonArray();
 
     static {
-        if (PersistentDataUtilities.jsonObject.has("ipFilters")) {
-            filteredIPs = PersistentDataUtilities.jsonObject.get("ipFilters").getAsJsonArray();
+        if (PersistentDataUtilities.has("ipFilters")) {
+            filteredIPs = PersistentDataUtilities.get("ipFilters").getAsJsonArray();
         }
     }
 

src/main/java/me/chayapak1/chomens_bot/plugins/MailPlugin.java

@@ -19,8 +19,8 @@ public class MailPlugin extends PlayersPlugin.Listener {
     private final Gson gson = new Gson();
 
     static {
-        if (PersistentDataUtilities.jsonObject.has("mails")) {
-            mails = PersistentDataUtilities.jsonObject.get("mails").getAsJsonArray();
+        if (PersistentDataUtilities.has("mails")) {
+            mails = PersistentDataUtilities.get("mails").getAsJsonArray();
         }
     }
 

src/main/java/me/chayapak1/chomens_bot/plugins/PlayersPersistentDataPlugin.java

@@ -14,8 +14,8 @@ public class PlayersPersistentDataPlugin extends PlayersPlugin.Listener {
     public static JsonObject playersObject = new JsonObject();
 
     static {
-        if (PersistentDataUtilities.jsonObject.has("players")) {
-            playersObject = PersistentDataUtilities.jsonObject.get("players").getAsJsonObject();
+        if (PersistentDataUtilities.has("players")) {
+            playersObject = PersistentDataUtilities.get("players").getAsJsonObject();
         }
     }
 

src/main/java/me/chayapak1/chomens_bot/util/PersistentDataUtilities.java

@@ -18,7 +18,7 @@ public class PersistentDataUtilities {
 
     private static final Gson gson = new Gson();
 
-    public static JsonObject jsonObject = new JsonObject();
+    private static JsonObject jsonObject = new JsonObject();
 
     private static final ReentrantLock lock = new ReentrantLock();
 
@@ -42,7 +42,7 @@ public class PersistentDataUtilities {
         }
     }
 
-    private static void writeToFile() {
+    private static synchronized void writeToFile() {
         if (stopping) return;
 
         lock.lock();
@@ -56,7 +56,7 @@ public class PersistentDataUtilities {
         }
     }
 
-    public static void stop () {
+    public static synchronized void stop () {
         stopping = true;
 
         lock.lock();
@@ -68,7 +68,15 @@ public class PersistentDataUtilities {
         }
     }
 
-    public static void put (String property, JsonElement value) {
+    public static synchronized boolean has (String property) {
+        return jsonObject.has(property);
+    }
+
+    public static synchronized JsonElement get (String property) {
+        return jsonObject.get(property);
+    }
+
+    public static synchronized void put (String property, JsonElement value) {
         lock.lock();
 
         try {
@@ -79,19 +87,19 @@ public class PersistentDataUtilities {
         }
     }
 
-    public static void put (String property, String value) {
+    public static synchronized void put (String property, String value) {
         put(property, new JsonPrimitive(value));
     }
 
-    public static void put (String property, boolean value) {
+    public static synchronized void put (String property, boolean value) {
         put(property, new JsonPrimitive(value));
     }
 
-    public static void put (String property, int value) {
+    public static synchronized void put (String property, int value) {
         put(property, new JsonPrimitive(value));
     }
 
-    public static void put (String property, char value) {
+    public static synchronized void put (String property, char value) {
         put(property, new JsonPrimitive(value));
     }
 }