FILEUP

F diff --git a/php/database.php b/php/database.php
--- a/php/database.php
+++ b/php/database.php
  		/* returns assoc array of nodes*/
  		function get_links_of(int $node_id)
  		{
- 			error_log("in get_links_of with argument {$node_id}");
  			$statement=$this->pdo->prepare("
  							select node_links.node_id as id,
  								node_links.name as name,
  				error_log("there was an error with the statement ni link_nodes");
  			}
  		}
+ 		function check_if_name_is_taken(string $filename,int $dir_id):bool
+ 		{
+ 			if($this->get_node_id($filename,$dir_id)!=NULL)
+ 			{
+ 				return true;
+ 			}else
+ 			{
+ 				return false;
+ 			}
+ 
+ 		}
  		/*returns the file name as it must be in the filesystem relative to the storage root*/
  		function create_file_node(string $filename,string $note,int $dir_id,string $mimetype,User $user): string
  		{
  			}
  
  			/*check if node with given name exists*/
- 			if($this->get_node_id($filename,$dir_id)!=NULL)
+ 			if($this->check_if_name_is_taken($filename,$dir_id))
  			{
  				error_log("filename taken");
  				return "filename taken";
F diff --git a/php/node.php b/php/node.php
--- a/php/node.php
+++ b/php/node.php
  	function create_directory(string $abstract_path,string $directory_name,string $note,User $user)
  	{
  		global $database;
- 		$dir_id=$database->create_dangling_directory();
+ 
  		$parent_dir_id=get_directory($abstract_path,$user);
- 		$database->link_nodes($parent_dir_id,$dir_id,$directory_name,$note);
+ 		if($database->check_if_name_is_taken($directory_name,$parent_dir_id))
+ 		{
+ 			return NULL;
+ 		}else
+ 		{
+ 			$dir_id=$database->create_dangling_directory();
+ 			$database->link_nodes($parent_dir_id,$dir_id,$directory_name,$note);
+ 			return $dir_id;
+ 		}
  	}
  
  ?>
F diff --git a/php/readdir.php b/php/readdir.php
--- a/php/readdir.php
+++ b/php/readdir.php
  	require_once "node.php";
  	session_start();
  	$user=$_SESSION['user_object'];
+ 	$path=$_POST['path'];
  
  //echo '[ { "name": "file1.txt", "mimetype": "text/plain", "is_directory": false }, { "name": "file2.pdf", "mimetype": "application/pdf", "is_directory": false }, { "name": "dir", "mimetype": "", "is_directory": true } ] ';
- 	$ret=get_directory_contents("/",$user);
+ 	$ret=get_directory_contents($path,$user);
  	$json=json_encode($ret);
  	echo $json;
  ?>