public static DateTime GetLatestModifedEntryDateTime(IBlogDataService dataService, EntryCollection entries)
{
// Check to see if we should send a HTTP 304 letting the RSS client
// know that they have the latest version of the feed
DateTime latest = DateTime.MinValue;
// need to check to see if the last entry value doesn't exist
// if it doesn't loop through posts to get the latest date
if (dataService.GetLastEntryUpdate() == DateTime.MinValue)
{
foreach (Entry entry in entries)
{
DateTime created = entry.ModifiedLocalTime;
if (created > latest) latest = created;
}
}
else
{
latest = dataService.GetLastEntryUpdate().ToLocalTime();
}
// we need to check to see if a comment entry has occured
// after the last entry update. If it has don't return 304
DateTime latestComment = dataService.GetLastCommentUpdate();
if ( ( latestComment != DateTime.MinValue ) && ( latest < latestComment.ToLocalTime() ) )
latest = latestComment.ToLocalTime();
return new DateTime(latest.Year, latest.Month, latest.Day, latest.Hour, latest.Minute, latest.Second);
}
