public async Task ProcessTags(string userId, string url, DateTimeOffset savedAt, string tagsString)
{
List<string> tags = new List<string>(_tagParser.FromString(tagsString));
foreach (string tagString in tags)
{
bool exists = false;
bool needsIncrement = false;
UserTag tag = new UserTag(userId, tagString)
{
NumberOfItems = 1
};
DateOrderedUserTagItem dateOrderedTagItem = new DateOrderedUserTagItem(userId, tagString, url, savedAt);
UniqueUserTagItem uniqueTagItem = new UniqueUserTagItem(userId, tagString, url, savedAt);
try
{
await _userTagRepository.Save(tag);
}
catch (UniqueKeyViolation)
{
needsIncrement = true;
}
try
{
await _userTagRepository.Save(uniqueTagItem);
}
catch (UniqueKeyViolation)
{
exists = true;
}
List<Task> tasks = new List<Task>();
if (!exists)
{
tasks.Add(_userTagRepository.Save(dateOrderedTagItem));
}
if (needsIncrement)
{
tasks.Add(_userTagRepository.IncrementTagItemCount(userId, tagString));
}
await Task.WhenAll(tasks);
}
}
public async Task Save(UserTag userTag)
{
await _userTagsTable.InsertAsync(userTag);
}