🐛 fix: file path selection bug.

tofhir-server/src/main/scala/io/tofhir/server/model/FilePathNode.scala

@@ -4,6 +4,7 @@ package io.tofhir.server.model
  * Represents a node for each file in the file system
  * @param label The name of the file
  * @param isFolder True if the file is a folder
+ * @param path file path of the node
  * @param children The children of the folder
  */
-case class FilePathNode(label: String, isFolder: Boolean, children: List[FilePathNode])
+case class FilePathNode(label: String, isFolder: Boolean, path: String, children: List[FilePathNode])

tofhir-server/src/main/scala/io/tofhir/server/service/fhir/FileSystemTreeStructureService.scala

@@ -21,13 +21,18 @@ class FileSystemTreeStructureService {
 
   /**
    * Get the folder tree structure of the given base path
-   * @param basePath The base path to start with
+   * @param basePathString The base path to start with
    * @param includeFiles if false, only folders will be included in the tree
    * @return
    */
-  def getFolderTreeStructure(basePath: String, includeFiles: Boolean): FilePathNode = {
+  def getFolderTreeStructure(basePathString: String, includeFiles: Boolean): FilePathNode = {
     var fileCount = 0 // Track total number of files processed
 
+    val basePath = FileUtils.getPath(basePathString)
+    if(!basePath.toAbsolutePath.normalize().startsWith(FileUtils.getPath("").toAbsolutePath)) {
+      throw new IllegalArgumentException("The given path is outside the root context path.")
+    }
+
     def buildNode(path: Path): FilePathNode = {
       if (fileCount >= FILE_LIMIT) {
         throw new IllegalStateException(s"File limit exceeded. The maximum number of files to process is $FILE_LIMIT.")
@@ -50,14 +55,9 @@ class FileSystemTreeStructureService {
       } else {
         List.empty[FilePathNode]
       }
-      FilePathNode(path.getFileName.toString, Files.isDirectory(path), children)
-    }
-
-    val path = FileUtils.getPath(basePath)
-    if(!path.toAbsolutePath.normalize().startsWith(FileUtils.getPath("").toAbsolutePath)) {
-      throw new IllegalArgumentException("The given path is outside the root context path.")
+      FilePathNode(path.getFileName.toString, Files.isDirectory(path), basePath.relativize(path).toString.replaceAll("\\\\", "/"), children)
     }
-    buildNode(path)
+    buildNode(basePath)
   }
 
 }