package pricing

// Tier represents a pricing tier for new signups.
type Tier int

const (
	TierFree Tier = iota // First 10: $0 for 3 months, auto-cancel
	TierYear             // Next 40: $20/year, then $100/month after
	TierPremium          // After 50: $200/month
)

// ForCustomer returns the tier for a new signup given current customer count.
// Count is the number of customers who have completed checkout (0-indexed slot).
func ForCustomer(count int, freeLimit, yearLimit int) Tier {
	if count < freeLimit {
		return TierFree
	}
	if count < yearLimit {
		return TierYear
	}
	return TierPremium
}