export const POST_SLUG_RE = /^[a-z0-9][a-z0-9-]{0,98}[a-z0-9]$|^[a-z0-9]$/

export function normalizePostSlugCandidate(input: string): string {
  const ascii = input
    .toLowerCase()
    .normalize('NFKD')
    .replace(/[\u0300-\u036f]/g, '')
    .replace(/['"]/g, '')
    .replace(/[^a-z0-9]+/g, '-')
    .replace(/^-+|-+$/g, '')
    .replace(/-{2,}/g, '-')

  const limited = ascii.slice(0, 100).replace(/-+$/g, '')
  return limited
}