const STOP_CHARS = /['"`]/g;

export function slugify(input: string, fallback = "chatgpt-share"): string {
  const base = input
    .normalize("NFKD")
    .replace(STOP_CHARS, "")
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/^-+|-+$/g, "")
    .replace(/-{2,}/g, "-")
    .slice(0, 80);

  return base || fallback;
}

export function displayTitleFromSlug(slug: string): string {
  return slug
    .split("-")
    .filter(Boolean)
    .map((part) => part.charAt(0).toUpperCase() + part.slice(1))
    .join(" ");
}