/// <summary>
/// Remove a 'Retweet' from the Tweet if it's already exists
/// or add new if it's not
/// </summary>
/// <param name="tweetId"></param>
/// <param name="user"></param>
/// <returns></returns>
public async Task <int> UpdateRetweets(int tweetId, TwitterCopyUser user)
{
var tweet = await _tweetRepository.GetTweetWithRetweetsAsync(tweetId);
var retweet = new Retweet
{
Tweet = tweet,
User = user
};
var dupe = tweet.Retweets.FirstOrDefault(x => x.TweetId == tweet.Id && x.UserId == user.Id);
if (dupe == null)
{
// If no duplicate was found
// Add new retweet to the database
_retweetRepository.Add(retweet);
}
else
{
// If duplicate was found
// Delete dupe instead of retweer because
// retweet doesn't have Id value
_retweetRepository.Delete(dupe);
}
await _retweetRepository.SaveAsync();
return(tweet.Retweets.Count);
}