public async Task <IActionResult> UpdateTags([FromRoute] Guid deckId, [Required][TagValidation][FromBody] string[] newTags)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var deck = await deckRepo.FindAsync(deckId);
if (deck is null)
{
return(NotFound());
}
var currentTags = deck.Tags.Select(tagDbo => tagDbo.Tag);
if (currentTags.SequenceEqual(newTags))
{
return(NoContent());
}
var tagsToAddition = newTags.Except(currentTags);
var tagsToDeletion = currentTags.Except(newTags);
if (tagsToAddition.Any())
{
if (!await deckRepo.AddTags(deckId, tagsToAddition.ToArray()))
{
throw new AggregateException();
}
}
if (tagsToDeletion.Any())
{
if (!await deckRepo.RemoveTags(deckId, tagsToDeletion.ToArray()))
{
throw new AggregateException();
}
}
return(NoContent());
}
