Can check the availability of a domain.

RestControllers/SettingsController.php

@@ -28,6 +28,27 @@ class SettingsController {
 
 	}
 
+	/**
+	 * Check the availability of a user directory
+	 * 
+	 * @url POST /settings/check_user_directory_availability
+	 */
+	public function checkUserDirectoryAvailability() {
+
+		//User login needed
+		user_login_required();
+
+		//Get user directory
+		$userDirectory = getPostUserDirectory("directory");
+
+		//Check if the directory is available
+		if(!components()->settings->checkUserDirectoryAvailability($userDirectory, userID))
+			Rest_fatal_error(401, "The specified domain is not available!");
+
+		//Else the domain is available
+		return array("success" => "The domain is available!");
+	}
+
 	/**
 	 * Turn a GeneralSettings object into a valid API object
 	 * 

classes/components/SettingsComponent.php

@@ -27,6 +27,28 @@ class SettingsComponents {
 		return $this->dbToGeneralSettings($entry);
 	}
 
+	/**
+	 * Check whether a directory is already linked to a user or not. If yes,
+	 * check if it linked to a specified user ID.
+	 * 
+	 * @param string $directory The directory to check
+	 * @param int $userID Target user ID
+	 * @return bool TRUE if the directory is available for the current user,
+	 * FALSE else
+	 */
+	public function checkUserDirectoryAvailability(string $directory, int $userID) : bool {
+
+		//Redirect the request to the user component
+		$folderUserID = components()->user->findByFolder($directory);
+
+		//Check if the folder is available
+		if($folderUserID == 0)
+			return TRUE;
+		
+		//Check else if the user is owning this domain or not
+		return $folderUserID == $userID;
+	}
+
 	/**
 	 * Get Single User Infos from database and return its information as an array
 	 *

functions/requests.php

@@ -485,6 +485,6 @@ function getPostUserDirectory(string $name) : string {
 		Rest_fatal_error(401, "Specified directory seems to be invalid!");
 	
 	//Return the directory
-	return $name;
+	return $directory;
 
 }