// Shared search normalization: transliterate cyrillic to latin, lowercase,
// drop latin y so "Sofia" matches "София" and vice versa. Used by both the
// client-side city selector and the server-side office filter.

export function toSearch(s: string): string {
  return s
    .toLowerCase()
    .replace(/щ/g, 'sht')
    .replace(/ш/g, 'sh')
    .replace(/ч/g, 'ch')
    .replace(/ж/g, 'zh')
    .replace(/ц/g, 'ts')
    .replace(/ю/g, 'yu')
    .replace(/я/g, 'ya')
    .replace(/ъ/g, 'a')
    .replace(/ь/g, 'y')
    .replace(/й/g, 'i')
    .replace(/а/g, 'a')
    .replace(/б/g, 'b')
    .replace(/в/g, 'v')
    .replace(/г/g, 'g')
    .replace(/д/g, 'd')
    .replace(/е/g, 'e')
    .replace(/з/g, 'z')
    .replace(/и/g, 'i')
    .replace(/к/g, 'k')
    .replace(/л/g, 'l')
    .replace(/м/g, 'm')
    .replace(/н/g, 'n')
    .replace(/о/g, 'o')
    .replace(/п/g, 'p')
    .replace(/р/g, 'r')
    .replace(/с/g, 's')
    .replace(/т/g, 't')
    .replace(/у/g, 'u')
    .replace(/ф/g, 'f')
    .replace(/х/g, 'h')
    .replace(/y/g, '')
    .replace(/[^a-z0-9 ]/g, ' ')
    .replace(/\s+/g, ' ')
    .trim();
}