Add Folia support

build.gradle.kts

@@ -49,7 +49,7 @@ dependencies {
     compileOnly("com.github.MilkBowl", "VaultAPI", "1.7")
     compileOnly("me.clip", "placeholderapi", "2.10.8")
     compileOnly("org.jetbrains", "annotations", "22.0.0")
-    compileOnly("io.papermc.paper", "paper-api", "1.18.1-R0.1-SNAPSHOT")
+    compileOnly("dev.folia", "folia-api", "1.19.4-R0.1-SNAPSHOT")
 }
 
 // Set the default value to the current time as an ISO-8601 string

src/main/java/pw/chew/transmuteit/commands/TransmuteCommand.java

@@ -21,6 +21,7 @@
 import pw.chew.transmuteit.guis.TransmuteTakeGUI;
 import pw.chew.transmuteit.objects.TransmutableItem;
 import pw.chew.transmuteit.utils.ChatHelper;
+import pw.chew.transmuteit.utils.Compatibility;
 import pw.chew.transmuteit.utils.DataManager;
 
 import java.io.IOException;
@@ -376,7 +377,7 @@ public boolean handleVersion(CommandSender sender) {
         sender.sendMessage("Checking for new updates...");
 
         int finalCbuild = cbuild;
-        Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
+        Compatibility.runTaskAsync(plugin, () -> {
             String[] response = getLatestVersion();
             int lbuild = Integer.parseInt(response[0]);
             String lversion = response[1];

src/main/java/pw/chew/transmuteit/utils/Compatibility.java

@@ -0,0 +1,33 @@
+package pw.chew.transmuteit.utils;
+
+import org.bukkit.Bukkit;
+import org.bukkit.plugin.Plugin;
+
+public class Compatibility {
+
+    public static Boolean IS_FOLIA = null;
+
+    private static boolean methodExists(Class<?> clazz, String methodName, Class<?>... parameterTypes) {
+        try {
+            clazz.getDeclaredMethod(methodName, parameterTypes);
+            return true;
+        } catch (Throwable dontcare) {
+            return false;
+        }
+    }
+
+    public static Boolean isFolia() {
+        if (IS_FOLIA == null) {
+            IS_FOLIA = methodExists(Bukkit.class, "getGlobalRegionScheduler");
+        }
+        return IS_FOLIA;
+    }
+
+    public static void runTaskAsync(Plugin plugin, Runnable runnable) {
+        if (isFolia()) {
+            Bukkit.getAsyncScheduler().runNow(plugin, (task) -> runnable.run());
+            return;
+        }
+        Bukkit.getScheduler().runTaskAsynchronously(plugin, runnable);
+    }
+}

src/main/resources/plugin.yml

@@ -4,6 +4,7 @@ version: 0.5.0-b${build}
 api-version: "1.15"
 description: It's just ProjectE Transmutation for Spigot
 author: Chewsterchew
+folia-supported: true
 website: https://github.com/ChewMC/TransmuteIt
 softdepend: [Vault, PlaceholderAPI]
 commands: