Fix Folia compatibility by migrating to native Java Executors for async tasks

src/main/java/dev/bailey/etplaceholders/DataManager.java

@@ -7,8 +7,10 @@ import com.google.gson.JsonObject;
 import java.io.InputStreamReader;
 import java.net.HttpURLConnection;
 import java.net.URL;
-import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
 import org.bukkit.Bukkit;
 
 public class DataManager {
@@ -25,6 +27,8 @@ public class DataManager {
     private final Map<String, Integer> playerRankCache = new ConcurrentHashMap<>();
 
     private final String[] trackedModes = {"overall", "vanilla", "mace", "axe", "sword", "smp", "diamondsmp", "uhc", "pot", "nethop", "cart"};
+    
+    private ScheduledExecutorService executor;
 
     public DataManager(ETPlaceholdersPlugin plugin) {
         this.plugin = plugin;
@@ -32,9 +36,15 @@ public class DataManager {
 
     public void startTasks() {
         int minutes = plugin.getConfig().getInt("cache-refresh-minutes", 15);
-        long ticks = minutes * 60 * 20L;
+        
+        executor = Executors.newScheduledThreadPool(2);
+        executor.scheduleAtFixedRate(this::refreshLeaderboards, 0, minutes, TimeUnit.MINUTES);
+    }
 
-        Bukkit.getScheduler().runTaskTimerAsynchronously(plugin, this::refreshLeaderboards, 0L, ticks);
+    public void stopTasks() {
+        if (executor != null && !executor.isShutdown()) {
+            executor.shutdownNow();
+        }
     }
 
     private String getApiUrl() {
@@ -112,35 +122,37 @@ public class DataManager {
     }
 
     public void fetchPlayerAsync(String playerName) {
-        Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
-            try {
-                HttpURLConnection conn = createConnection("/players/" + playerName);
-                if (conn.getResponseCode() == 200) {
-                    try (InputStreamReader reader = new InputStreamReader(conn.getInputStream())) {
-                        JsonObject json = gson.fromJson(reader, JsonObject.class);
-                        if (json != null) {
-                            Map<String, String> pTiers = new ConcurrentHashMap<>();
-                            
-                            if (json.has("tiers") && !json.get("tiers").isJsonNull()) {
-                                JsonObject tiersObj = json.getAsJsonObject("tiers");
-                                for (Map.Entry<String, JsonElement> entry : tiersObj.entrySet()) {
-                                    if (!entry.getValue().isJsonNull()) {
-                                        pTiers.put(entry.getKey().toLowerCase(), entry.getValue().getAsString());
+        if (executor != null && !executor.isShutdown()) {
+            executor.submit(() -> {
+                try {
+                    HttpURLConnection conn = createConnection("/players/" + playerName);
+                    if (conn.getResponseCode() == 200) {
+                        try (InputStreamReader reader = new InputStreamReader(conn.getInputStream())) {
+                            JsonObject json = gson.fromJson(reader, JsonObject.class);
+                            if (json != null) {
+                                Map<String, String> pTiers = new ConcurrentHashMap<>();
+                                
+                                if (json.has("tiers") && !json.get("tiers").isJsonNull()) {
+                                    JsonObject tiersObj = json.getAsJsonObject("tiers");
+                                    for (Map.Entry<String, JsonElement> entry : tiersObj.entrySet()) {
+                                        if (!entry.getValue().isJsonNull()) {
+                                            pTiers.put(entry.getKey().toLowerCase(), entry.getValue().getAsString());
+                                        }
                                     }
                                 }
-                            }
-                            
-                            playerTierCache.put(playerName.toLowerCase(), pTiers);
+                                
+                                playerTierCache.put(playerName.toLowerCase(), pTiers);
 
-                            if (json.has("position") && !json.get("position").isJsonNull()) {
-                                playerRankCache.put(playerName.toLowerCase(), json.get("position").getAsInt());
+                                if (json.has("position") && !json.get("position").isJsonNull()) {
+                                    playerRankCache.put(playerName.toLowerCase(), json.get("position").getAsInt());
+                                }
                             }
                         }
                     }
+                } catch (Exception e) {
                 }
-            } catch (Exception e) {
-            }
-        });
+            });
+        }
     }
 
     public String getPlayerTier(String playerName, String mode) {

src/main/java/dev/bailey/etplaceholders/ETPlaceholdersPlugin.java

@@ -24,7 +24,9 @@ public class ETPlaceholdersPlugin extends JavaPlugin {
 
     @Override
     public void onDisable() {
-        Bukkit.getScheduler().cancelTasks(this);
+        if (dataManager != null) {
+            dataManager.stopTasks();
+        }
     }
 
     public DataManager getDataManager() {

target/maven-archiver/pom.properties

@@ -1,3 +0,0 @@
-artifactId=ETPlaceholders
-groupId=dev.bailey
-version=1.0.0

target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst

@@ -1,3 +0,0 @@
-dev\bailey\etplaceholders\DataManager.class
-dev\bailey\etplaceholders\ETExpansion.class
-dev\bailey\etplaceholders\ETPlaceholdersPlugin.class