package rollouts

import "time"

type TimeSource interface {
	Now() time.Time
}

type Option func(*options)

func WithTimeSource(ts TimeSource) Option {
	return func(o *options) {
		o.timeSource = ts
	}
}

type options struct {
	timeSource TimeSource
}

func makeOptions(opts ...Option) *options {
	o := &options{
		timeSource: defaultTimeSource{},
	}
	for _, opt := range opts {
		opt(o)
	}
	return o
}

type defaultTimeSource struct{}

func (d defaultTimeSource) Now() time.Time {
	return time.Now()
}