package exchange

import "time"

var DefaultTTL = 24 * time.Hour

type Option func(o *options)

type options struct {
	ttl time.Duration
}

func parseOpts(opts []Option) options {
	o := options{DefaultTTL}
	for i := range opts {
		opts[i](&o)
	}
	return o
}

func WithTTL(ttl time.Duration) Option {
	return func(o *options) { o.ttl = ttl }
}