/**
 * Converts plain text with newline separators into HTML paragraphs.
 * If the text already contains HTML block elements, returns as-is.
 */
export function formatTextToHtml(text: string): string {
  if (!text) return "";

  // If already contains HTML block elements, return as-is
  if (/<(?:p|div|h[1-6]|ul|ol|blockquote)\b/i.test(text)) {
    return text;
  }

  return text
    .split(/\n\n+/)
    .filter((p) => p.trim())
    .map((p) => `<p>${p.trim().replace(/\n/g, "<br>")}</p>`)
    .join("");
}