private void TryAddLoadMoreButton(IEnumerable <ITweetable> received)
{
if (!ActivateLoadMoreButton)
{
return;
}
if (Source == null || !Source.Any())
{
return;
}
ITweetable olderTweetReceived;
ITweetable nextTweet;
olderTweetReceived = received.OrderBy(item => item.Id).FirstOrDefault();
if (olderTweetReceived == null)
{
return;
}
nextTweet = Source.FirstOrDefault(item => item.Id < olderTweetReceived.Id);
if (nextTweet == null)
{
return;
}
int avgTime = DecisionMaker.GetAvgTimeBetweenTweets(Source);
TimeSpan diff = olderTweetReceived.CreatedDate - nextTweet.CreatedDate;
if (diff.TotalSeconds > 4 * avgTime && !(nextTweet is LoadMoreTweetable))
{
Source.Add(new LoadMoreTweetable {
Id = olderTweetReceived.Id - 1
});
}
}
IEnumerable <ITweetable> AddLoadMoreButtons(IEnumerable <ITweetable> cache)
{
var list = cache.ToList();
int avgTime = DecisionMaker.GetAvgTimeBetweenTweets(Source);
double sumTime = 0;
for (int i = 1; i < list.Count; i++)
{
double diff = Math.Abs((list[i].CreatedDate - list[i - 1].CreatedDate).TotalSeconds);
sumTime += diff;
if (sumTime != 0 && i > 1 &&
diff > 10 * (sumTime / (i - 1)) && diff > 5 * avgTime &&
diff > 200)
{
yield return new LoadMoreTweetable {
Id = list[i].Id + 1
}
}
;
yield return(list[i]);
}
}