package probe

import "fmt"

// HumanizeBitsPerSecond formats a bit rate as kilobit, megabit, or gigabit.
func HumanizeBitsPerSecond(bitsPerSecond float64) string {
	const (
		kilobit = 1000
		megabit = 1000 * kilobit
		gigabit = 1000 * megabit
	)

	switch {
	case bitsPerSecond >= gigabit:
		return fmt.Sprintf("%.2f Gbit/s", bitsPerSecond/gigabit)
	case bitsPerSecond >= megabit:
		return fmt.Sprintf("%.2f Mbit/s", bitsPerSecond/megabit)
	case bitsPerSecond >= kilobit:
		return fmt.Sprintf("%.2f kbit/s", bitsPerSecond/kilobit)
	default:
		return fmt.Sprintf("%.0f bit/s", bitsPerSecond)
	}
}