public async Task <IEnumerable <Tag> > FindByNamesAndAddIfNotExists(IEnumerable <string> tags)
{
tags.NotNull();
var existingTags = await tagRepository.FindByNamesAsync(tags, t => t);
var missingNames = tags.Where(t => !existingTags.Any(e => e.Name == t));
if (missingNames == null || missingNames.Count() == 0)
{
return(existingTags);
}
var dateCreated = DateTime.Now;
var missingTags = missingNames.Select(name => new Tag()
{
Name = name,
IsActive = true,
DateCreated = dateCreated,
DateLastUpdated = dateCreated
}).ToList();
tagRepository.AddRange(missingTags);
missingTags.AddRange(existingTags);
return(missingTags);
}
public IEnumerable <ITag> AddRange(IEnumerable <Tag> entities)
{
return(repository.AddRange(entities));
}
