public async Task <bool> AddNote(
string username,
Note note,
IReadOnlyList <string> tags = null)
{
if (string.IsNullOrWhiteSpace(username))
{
var message = "Cannot add note."
+ $" The specified username '{username}'"
+ " may not be null, empty. or whitespace";
throw new ArgumentException(message, nameof(username));
}
var user = await _userManager.FindByNameAsync(username);
if (user == null)
{
var message = "Cannot add note."
+ $" A user having username '{username}' does not exist.";
throw new InvalidOperationException(message);
}
note.UserId = user.Id;
if (tags == null || !tags.Any())
{
return(await _addNoteCommand.ExecuteAsync(note));
}
using (var scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
{
var addTagsResult = await _addTagsCommand.ExecuteAsync(tags);
foreach (var tag in addTagsResult)
{
note.NoteTags.Add(new NoteTag {
TagId = tag.Id
});
}
var addNoteResult = await _addNoteCommand.ExecuteAsync(note);
if (!addNoteResult)
{
return(false);
}
scope.Complete();
return(true);
}
}
public async Task <bool> ExecuteAsync(Note note, IReadOnlyList <string> tags)
{
if (note == null)
{
throw new ArgumentNullException(nameof(note));
}
var noteFromDb = await FindNoteAsync(note.Id);
noteFromDb.Description = note.Description;
noteFromDb.Title = note.Title;
noteFromDb.ModifiedAt = DateTimeOffset.Now;
using (var transaction = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
{
if (tags != null && tags.Any())
{
// if (noteFromDb.NoteTags.Any())
// _context.NoteTags.RemoveRange(noteFromDb.NoteTags);
noteFromDb.NoteTags = new List <NoteTag>();
var addTagsResult = await _addTagsCommand.ExecuteAsync(tags);
foreach (var tag in addTagsResult)
{
noteFromDb.NoteTags.Add(new NoteTag {
TagId = tag.Id
});
}
}
var result = await _context.SaveChangesAsync();
if (result < 1)
{
throw new InvalidOperationException("Note update failed.");
}
transaction.Complete();
}
return(true);
}