package timeutil

import "time"

type Clock interface {
	Now() time.Time
}

type SystemClock struct{}

func (SystemClock) Now() time.Time {
	return time.Now().UTC()
}

type FixedClock struct {
	Time time.Time
}

func (c FixedClock) Now() time.Time {
	return c.Time.UTC()
}

func NowUTC() time.Time {
	return time.Now().UTC()
}

func FormatRFC3339(t time.Time) string {
	return t.UTC().Format(time.RFC3339)
}

func FormatRFC3339Nano(t time.Time) string {
	return t.UTC().Format(time.RFC3339Nano)
}

func TimestampIDPart(t time.Time) string {
	return t.UTC().Format("20060102T150405Z")
}