use expiring map for accounts

pom.xml

@@ -171,6 +171,12 @@
             <version>4.9.2</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>33.1.0-jre</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 
 </project>

src/main/java/cc/fascinated/Aetheria.java

@@ -4,12 +4,12 @@ import cc.fascinated.account.AccountManager;
 import cc.fascinated.chat.ChatManager;
 import cc.fascinated.command.CommandManager;
 import cc.fascinated.commandspy.CommandSpyManager;
-import cc.fascinated.commandspy.command.CommandSpyCommand;
 import cc.fascinated.event.EventManager;
 import cc.fascinated.metrics.MetricManager;
 import cc.fascinated.motd.MotdManager;
 import cc.fascinated.placeholder.PlaceholderManager;
 import cc.fascinated.playercolor.PlayerColorManager;
+import cc.fascinated.renderdistance.RenderDistanceManager;
 import cc.fascinated.utils.BuildData;
 import cc.fascinated.worldsize.WorldSizeManager;
 import lombok.Getter;
@@ -49,5 +49,6 @@ public class Aetheria extends JavaPlugin {
         new ChatManager();
         new MotdManager();
         new CommandSpyManager();
+        new RenderDistanceManager();
     }
 }

src/main/java/cc/fascinated/account/AccountManager.java

@@ -10,6 +10,8 @@ import cc.fascinated.utils.DiscordWebhook;
 import cc.fascinated.utils.Manager;
 import cc.fascinated.utils.Priority;
 import cc.fascinated.utils.Style;
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
 import com.viaversion.viaversion.api.Via;
 import lombok.extern.log4j.Log4j2;
 import org.bukkit.Bukkit;
@@ -30,7 +32,16 @@ import java.util.concurrent.TimeUnit;
 public class AccountManager extends Manager implements Listener {
 
     private final long SAVE_INTERVAL = 5; // in minutes
-    private static final Map<UUID, Account> ACCOUNTS = new HashMap<>();
+    private static final Cache<UUID, Account> ACCOUNTS = CacheBuilder.newBuilder()
+            .expireAfterAccess(30, TimeUnit.MINUTES)
+            .removalListener(notification -> {
+                Account account = (Account) notification.getValue();
+                if (account != null) {
+                    account.save(); // Save the account when it is removed from the cache
+                    log.info("Saved account for {} because it was removed from the cache.", account.getName());
+                }
+            })
+            .build();
 
     public AccountManager() {
         CommandManager.registerCommand(new SaveAccountsCommand());
@@ -57,7 +68,7 @@ public class AccountManager extends Manager implements Listener {
      * @return the account
      */
     public static Account getAccount(UUID uuid) {
-        return ACCOUNTS.get(uuid);
+        return ACCOUNTS.getIfPresent(uuid);
     }
 
     /**
@@ -67,7 +78,7 @@ public class AccountManager extends Manager implements Listener {
      * @return true if the account is already registered, false otherwise
      */
     private boolean isAccountLoaded(UUID uuid) {
-        return ACCOUNTS.containsKey(uuid);
+        return ACCOUNTS.getIfPresent(uuid) != null;
     }
 
     /**
@@ -87,7 +98,8 @@ public class AccountManager extends Manager implements Listener {
         long before = System.currentTimeMillis(),
                 saved = 0; // The amount of accounts that were saved
         log.info("Saving accounts...");
-        for (Account account : ACCOUNTS.values()) {
+        for (Map.Entry<UUID, Account> entry : ACCOUNTS.asMap().entrySet()) {
+            Account account = entry.getValue();
             boolean didSave = account.save(); // Save the account
             if (didSave) {
                 saved++;
@@ -148,13 +160,10 @@ public class AccountManager extends Manager implements Listener {
                 .replace("%player%", event.getPlayer().getName())
                 .replace("player-color", account.getPlayerColorProfile().getColor().toString())
         ));
-        account.save(); // Save the account
-        ACCOUNTS.remove(account.getUuid()); // Remove the account from the cache
     }
 
     @Override
     public void onAetheriaDisable() {
         saveAccounts(); // Save the accounts to disk
-        ACCOUNTS.clear(); // Remove the accounts from the cache
     }
 }

src/main/java/cc/fascinated/commandspy/CommandSpyManager.java

@@ -41,6 +41,9 @@ public class CommandSpyManager extends Manager {
     @Override
     public void onCommandPreProcess(Account account, PlayerCommandPreprocessEvent event) {
         for (Account commandSpyAccount : COMMAND_SPY_ENABLED) {
+            if (account.equals(commandSpyAccount)) { // Don't send the command to the account that executed it
+                continue;
+            }
             commandSpyAccount.sendMessage(Lang.COMMAND_SPY_FORMAT.getAsString()
                     .replace("player-color", account.getPlayerColorProfile().getColor().toString())
                     .replace("%player%", account.getName())