public String DeleteFolderLabel(String command, List <User> MasterUsers, List <Label> MasterLabels, List <Folder> MasterFolders)
{
String result = String.Empty;
var regularExpression = new Regex(@"(Delete_Folder_Label)\s(\w+)\s([0-9]+)\s(['`‘].+['`’])", RegexOptions.IgnoreCase);
var match = regularExpression.Match(command);
String username = match.Groups[2].Value;
String folderId = match.Groups[3].Value;
String labelName = match.Groups[4].Value;
labelName = Regex.Replace(labelName, "^['`‘]|['`‘]$", "");
User user = MasterUsers.Find(user => user.Username.ToLower() == username.ToLower());
if (user == null)
{
result = "Error - unknown user";
}
else
{
Label label = MasterLabels.Find(label => label.UserId.Equals(user.Id) && label.Name.ToLower().Equals(labelName.ToLower()));
if (label == null)
{
result = "Error - label name not exist";
}
else
{
Folder folder = MasterFolders.Find(folder => folder.Id == folderId);
if (folder == null)
{
result = "Error - folder doesn’t exist";
}
else
{
if (folder.UserId != user.Id)
{
result = "Error - folder owner not match";
}
else
{
FolderLabel folderLabel = Folder_Labels.Find(folderLabel => folderLabel.FolderId.Equals(folder.Id) && folderLabel.LabelId.Equals(label.Id));
if (folderLabel == null)
{
result = "Error - folder-label doesn’t exist";
}
else
{
Folder_Labels.Remove(folderLabel);
result = "Success";
}
}
}
}
}
return(result);
}
public String AddFolderLabel(String command, List <User> MasterUsers, List <Label> MasterLabels, List <Folder> MasterFolders)
{
String result = String.Empty;
var regularExpression = new Regex(@"(Add_Folder_Label)\s(\w+)\s([0-9]+)\s(['`‘].+['`’])", RegexOptions.IgnoreCase);
var match = regularExpression.Match(command);
String username = match.Groups[2].Value;
String folderId = match.Groups[3].Value;
String labelName = match.Groups[4].Value;
labelName = Regex.Replace(labelName, "^['`‘]|['`‘]$", "");
User user = MasterUsers.Find(user => user.Username.ToLower() == username.ToLower());
if (user == null)
{
result = "Error - unknown user";
}
else
{
Label label = MasterLabels.Find(label => label.UserId.Equals(user.Id) && label.Name.ToLower().Equals(labelName.ToLower()));
if (label == null)
{
result = "Error - label name not exist";
}
else
{
Folder folder = MasterFolders.Find(folder => folder.Id == folderId);
if (folder == null)
{
result = "Error - folder doesn’t exist";
}
else
{
if (folder.UserId != user.Id)
{
result = "Error - folder owner not match";
}
else
{
FolderLabel newFolderLabel = Folder_Labels.Find(newFolderLabel => newFolderLabel.FolderId.Equals(folder.Id) && newFolderLabel.LabelId.Equals(label.Id));
if (newFolderLabel != null)
{
result = "Error - Folder " + folder.Name + " with User " + user.Username + " already labeled with Label " + label.Name;
}
else
{
newFolderLabel = new FolderLabel();
newFolderLabel.Id = Guid.NewGuid().ToString();
newFolderLabel.FolderId = folder.Id;
newFolderLabel.LabelId = label.Id;
Folder_Labels.Add(newFolderLabel);
result = "Success";
}
}
}
}
}
return(result);
}
