improve accuracy of startup version test

Author: xGinko

AnarchyExploitFixesFolia/src/main/java/me/xginko/aef/AnarchyExploitFixes.java

@@ -1,5 +1,8 @@
 package me.xginko.aef;
 
+import com.github.retrooper.packetevents.PacketEvents;
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
+import com.github.retrooper.packetevents.manager.server.VersionComparison;
 import de.tr7zw.changeme.nbtapi.NBT;
 import me.xginko.aef.commands.AEFCommand;
 import me.xginko.aef.config.Config;
@@ -65,13 +68,6 @@ public void onEnable() {
             return;
         }
 
-        if (PlatformUtil.getMinecraftVersion() < 19) {
-            getLogger().severe("The Folia jar is intended for Paper and Folia servers running 1.19 and above.");
-            getLogger().severe("Please replace it with the Legacy jar.");
-            getServer().getPluginManager().disablePlugin(this);
-            return;
-        }
-
         prefixedLogger = ComponentLogger.logger(getLogger().getName());
         unPrefixedLogger = ComponentLogger.logger("");
 
@@ -119,9 +115,20 @@ public void onEnable() {
         ).map(str -> Component.text(str).color(KyoriUtil.AEF_WHITE)).forEach(prefixedLogger::info);
 
         prefixedLogger.info("Detected Version 1.{}.{}", PlatformUtil.getMinecraftVersion(), PlatformUtil.getMinecraftPatchVersion());
+        ServerVersion serverVersion = PacketEvents.getAPI().getServerManager().getVersion();
+        if (serverVersion.isOlderThanOrEquals(ServerVersion.V_1_19_3) ||
+                serverVersion.equals(ServerVersion.V_1_19_4) && !PlatformUtil.isFolia()) {
+            prefixedLogger.error("This plugin jar is incompatible with your Server. Please use the Legacy jar.");
+            getServer().getPluginManager().disablePlugin(this);
+            return;
+        }
 
-        if (PlatformUtil.isFolia()) {
-            prefixedLogger.info("Detected Folia server.");
+        try {
+            Files.createDirectories(getDataFolder().toPath());
+        } catch (Exception e) {
+            prefixedLogger.error("Unable to create plugin directory.", e);
+            getServer().getPluginManager().disablePlugin(this);
+            return;
         }
 
         prefixedLogger.info("Loading Config");

AnarchyExploitFixesLegacy/src/main/java/me/xginko/aef/AnarchyExploitFixes.java

@@ -1,5 +1,7 @@
 package me.xginko.aef;
 
+import com.github.retrooper.packetevents.PacketEvents;
+import com.github.retrooper.packetevents.manager.server.ServerVersion;
 import de.tr7zw.changeme.nbtapi.NBT;
 import me.xginko.aef.commands.AEFCommand;
 import me.xginko.aef.config.Config;
@@ -94,14 +96,6 @@ public void onEnable() {
             return;
         }
 
-        try {
-            Files.createDirectories(getDataFolder().toPath());
-        } catch (Exception e) {
-            prefixedLogger.error("Unable to create plugin directory.", e);
-            getServer().getPluginManager().disablePlugin(this);
-            return;
-        }
-
         instance = this;
         permissionHandler = PermissionHandler.create(this);
         metrics = new Metrics(this, 8700);
@@ -118,13 +112,21 @@ public void onEnable() {
         ).forEach(prefixedLogger::info);
 
         prefixedLogger.info("Detected Version 1.{}.{}", PlatformUtil.getMinecraftVersion(), PlatformUtil.getMinecraftPatchVersion());
-
-        if (PlatformUtil.getMinecraftVersion() < 12) {
-            prefixedLogger.warn("This version is unsupported. Expect issues.");
-        } else if (PlatformUtil.getMinecraftVersion() > 19) {
+        ServerVersion serverVersion = PacketEvents.getAPI().getServerManager().getVersion();
+        if (serverVersion.isNewerThan(ServerVersion.V_1_19_4)) {
             prefixedLogger.warn("Legacy is intended for Paper server versions 1.12 - 1.19.4.");
-            prefixedLogger.warn("Its highly recommended to use the Folia jar for your server.");
-            prefixedLogger.warn("Some modules may not work properly otherwise.");
+            prefixedLogger.warn("Please use the Folia jar for your server to avoid issues due to old API calls.");
+        }
+        if (serverVersion.isOlderThanOrEquals(ServerVersion.V_1_12_2)) {
+            prefixedLogger.warn("This version is officially unsupported. Expect issues.");
+        }
+
+        try {
+            Files.createDirectories(getDataFolder().toPath());
+        } catch (Exception e) {
+            prefixedLogger.error("Unable to create plugin directory.", e);
+            getServer().getPluginManager().disablePlugin(this);
+            return;
         }
 
         prefixedLogger.info("Loading Datastore");