public async Task <GraphInfo> GetLastYearClicksAsync(string linkId, string userId, DateTime first)
{
bool isLinkIdNull = (linkId == null);
List <ClicksCount> clicks = await Clicks
.Where(c => c.Link.OwnerId == userId)
.Where(c => isLinkIdNull ? true : c.LinkId == linkId)
.Where(c => c.DateTime > first)
.GroupBy(c => (int)c.DateTime.Subtract(first).TotalDays)
.Select(group =>
new ClicksCount
{
Time = group.Key,
Count = group.Count()
})
.ToListAsync();
return(GetGraphInfo(366, clicks, first, 2));
}