public IObservable <long> Daily(params TimeSpan[] times)
{
if (scheduler == null)
{
throw new ArgumentNullException(nameof(scheduler));
}
if (times == null)
{
throw new ArgumentNullException(nameof(times));
}
if (times.Length == 0)
{
return(Observable.Never <long>());
}
var sortedTimes = times.ToList();
sortedTimes.Sort();
return(Observable.Defer(
() =>
{
var now = configuration.Now.AddMinutes(1);
var next = sortedTimes.FirstOrDefault(time => now.TimeOfDay < time);
var date = next > TimeSpan.Zero
? now.Date.Add(next)
: configuration.GetWorkDay(now.Date.AddDays(1)).Add(sortedTimes[0]);
logger.LogInformation($"Next @{date} from {sortedTimes.Aggregate("", (s, t) => s + t + ", ")}");
return Observable.Timer(date, scheduler);
})
.Repeat()
.Scan(-1L, (n, _) => n + 1));
}