public async Task <IActionResult> Retag(int id, string tags)
{
tags = tags ?? "";
if (Regex.IsMatch(tags, "[^0-9a-zA-Z,-]"))
{
return(Json(new { success = false, error = "Invalid tags. Separate your tags with commas. Tags can only contain letters and digits 0 to 9." }));
}
string[] tagArray = String.IsNullOrWhiteSpace(tags) ? new string[] { } : tags.ToLower().Split(',');
Puzzle p = await puzzleRepository.GetAsync(id);
if (p == null)
{
return(Json(new { success = false, error = "Puzzle not found." }));
}
p.Tags = tagArray;
bool retagSuccess = await puzzleRepository.RetagAsync(id, tagArray);
if (!retagSuccess)
{
return(Json(new { success = false, error = "An unexpected error while attempting to change the database occurred." }));
}
Task.WaitAll(tagArray.Select(x => tagRepository.MaybeAddTagAsync(p.Variant, x)).ToArray());
return(Json(new { success = true }));
}