eikek / calev Goto Github PK

The readme shows a bug when generating events where there aren't any.

If an event is in the past, the nextElapsed returns a None:

CalEvent.unsafe("1900-01-* 12,14:0:0").nextElapse(LocalDateTime.now)
// res7: Option[LocalDateTime] = Some(value = 2021-01-06T12:00)

Value of next elapse calculated by this library is different from the output of systemd-analyze calendar command for the same input values. Example:

• systemd

$ systemd-analyze calendar --iterations=1 "*-2-* 10:00:00"
  Original form: *-2-* 10:00:00
Normalized form: *-02-* 10:00:00
    Next elapse: Sat 2025-02-01 10:00:00 CET
       (in UTC): Sat 2025-02-01 09:00:00 UTC
       From now: 10 months 13 days left

$ date
Wed 20 Mar 2024 10:01:36 AM CET

• main method from calev-core

$ sbt core/run --ref "2024-03-20T10:01:00" "*-2-* 10:00:00"
Normalized:  *-02-* 10:00:00
Reference:   2024-03-20T10:01
Next Elapses:
- 2025-02-21T10:00

systemd returns 2025-02-01 and calev: 2025-02-21. Is this difference intentional or is it a bug?

A Calendar instance contains calendar events (instances of CalEvent) each identified by a name (String).

Calendar interface

case class ScheduledEvent(scheduledAt: ZonedDateTime, eventName: String, calendarEvent: CalEvent)

trait Calendar {
  def calendarEvents: Map[String, CalEvent]

  def upcomingEvent(ref: ZonedDateTme): Option[ScheduledEvent]

}

There could be different types of the calendar: DailyCalendar, WeeklyCalendar, MonthlyCalendar. The implementation of upcomingEvent method could be optimized for each calendar type.

Hi @eikek. Please see my test in #202. It should work IMO, but it fails.

To use this library from javascript, a scalajs build can be provided.

I misunderstood how ranges with repetitions work in systemd. See systemd/systemd#15030.

val cal = CalEvent.unsafe("Mon --* 15:00:00")
val calWithZone = cal.copy(zone = Some(ZoneOffset.UTC))

calWithZone.asString produces: Mon --* 15:00:00 Z

It should produce: Mon --* 15:00:00 UTC

@eikek Do you know what could be the reason the compilation of calev-core hangs ? I'm compiling only for jvm (not js).