package creator

import "time"

type ScheduleKind string

const (
	ScheduleNewWorks ScheduleKind = "new_works"
	ScheduleComments ScheduleKind = "comments"
	ScheduleMetrics  ScheduleKind = "metrics"
)

func IsDue(lastCompleted, now time.Time, interval time.Duration) bool {
	if now.IsZero() || interval <= 0 {
		return false
	}
	if lastCompleted.IsZero() {
		return true
	}
	return !now.UTC().Before(lastCompleted.UTC().Add(interval))
}

func NextFixedRun(lastCompleted, now time.Time, interval time.Duration) time.Time {
	if now.IsZero() || interval <= 0 {
		return time.Time{}
	}
	if lastCompleted.IsZero() {
		return now.UTC()
	}
	next := lastCompleted.UTC().Add(interval)
	for !next.After(now.UTC()) {
		next = next.Add(interval)
	}
	return next
}

func MetricDue(work Work, now time.Time) bool {
	return work.NextMetricAt != nil && !now.UTC().Before(work.NextMetricAt.UTC())
}