/// <summary>
/// If Tags are in Database it will load them, if one does not exists, it will create it
/// This one boii can modify Database, but doesn't save changes
/// </summary>
private async Task <List <Tag> > CreateTagListFromStringTagsAsync(DragonContext db, List <string> stringTags)
{
var lowerStringTags = stringTags.ConvertAll(st => st.ToLower());
// Here we will have tags that exists in database
List <Tag> tagsFound = await
(
from t in db.Tags
where lowerStringTags.Contains(t.TagText)
select t
).ToListAsync();
if (tagsFound.Count == stringTags.Count)
{
return(tagsFound); // If we found all tags, we don't need to create missing
}
// Okey, we need to add some tags, let's go with this shit
List <string> tagsTextFound = tagsFound.ConvertAll(t => t.TagText);
List <string> missingTags =
(
from st in lowerStringTags
where tagsTextFound.Contains(st) == false
select st
).ToList();
List <Tag> tagsToAdd = missingTags.ConvertAll(mt => new Tag(mt));
await db.AddRangeAsync(tagsToAdd);
return(tagsFound.Concat(tagsToAdd).ToList());
}
