Maybe fix problems with symlinks (#956)

common/src/main/java/me/lucko/luckperms/common/dependencies/DependencyManager.java

@@ -33,6 +33,7 @@ import me.lucko.luckperms.common.dependencies.relocation.Relocation;
 import me.lucko.luckperms.common.dependencies.relocation.RelocationHandler;
 import me.lucko.luckperms.common.plugin.LuckPermsPlugin;
 import me.lucko.luckperms.common.storage.StorageType;
+import me.lucko.luckperms.common.utils.MoreFiles;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -82,7 +83,7 @@ public class DependencyManager {
     private Path getSaveDirectory() {
         Path saveDirectory = this.plugin.getBootstrap().getDataDirectory().resolve("lib");
         try {
-            Files.createDirectories(saveDirectory);
+            MoreFiles.createDirectoriesIfNotExists(saveDirectory);
         } catch (IOException e) {
             throw new RuntimeException("Unable to create lib directory", e);
         }

common/src/main/java/me/lucko/luckperms/common/storage/dao/file/AbstractConfigurateDao.java

@@ -57,7 +57,6 @@ import ninja.leaping.configurate.SimpleConfigurationNode;
 import ninja.leaping.configurate.Types;
 
 import java.io.IOException;
-import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -132,7 +131,7 @@ public abstract class AbstractConfigurateDao extends AbstractDao {
     @Override
     public void init() throws IOException {
         this.dataDirectory = this.plugin.getBootstrap().getDataDirectory().resolve(this.dataDirectoryName);
-        Files.createDirectories(this.dataDirectory);
+        MoreFiles.createDirectoriesIfNotExists(this.dataDirectory);
 
         this.uuidDataFile = MoreFiles.createFileIfNotExists(this.dataDirectory.resolve("uuidcache.txt"));
         this.uuidCache.load(this.uuidDataFile);

common/src/main/java/me/lucko/luckperms/common/utils/MoreFiles.java

@@ -39,7 +39,7 @@ public final class MoreFiles {
     }
 
     public static Path createDirectoryIfNotExists(Path path) throws IOException {
-        if (Files.exists(path) && Files.isDirectory(path)) {
+        if (Files.exists(path) && (Files.isDirectory(path) || Files.isSymbolicLink(path))) {
             return path;
         }
 
@@ -47,5 +47,14 @@ public final class MoreFiles {
         return path;
     }
 
+    public static Path createDirectoriesIfNotExists(Path path) throws IOException {
+        if (Files.exists(path) && (Files.isDirectory(path) || Files.isSymbolicLink(path))) {
+            return path;
+        }
+
+        Files.createDirectories(path);
+        return path;
+    }
+
     private MoreFiles() {}
 }