package address

import "strings"

// streetKey builds the canonical, city-aware, type-independent street key:
//
//	"<cityKey>|<ordinal>|<sorted name tokens>"
//
// The city is part of the key so that "Ленина" in Novosibirsk and "Ленина" in
// Berdsk are different streets. The type word is dropped so that a user who
// omits it ("станционная 1" instead of "Станционная улица 1") still matches;
// type confusion is surfaced later as ambiguity.
//
// None of the components may contain "|": NormalizeText folds all punctuation
// that could appear in a name into spaces, and ordinals are digits only.
func streetKey(cityKey, ordinal, nameKey string) string {
	return cityKey + "|" + ordinal + "|" + nameKey
}

// normalizeOrdinal trims leading zeros so "02-я" and "2-я" agree.
func normalizeOrdinal(s string) string {
	return trimLeadingZeros(strings.TrimSpace(s))
}