/**
 * Internal dispatch/batch codes (e.g. "AUTO22-20260717 PILOT-04", "SOP-LG-001")
 * come from seeding/request keys and must never surface to employees.
 */
const CODE_TOKEN = /^[A-Za-z][A-Za-z0-9]*(?:[-_][A-Za-z0-9]+)+$/;

const isCodeToken = (token: string) => CODE_TOKEN.test(token) && /\d/.test(token);

/** True when the whole line is just an internal code (used to drop list items). */
export const isInternalCode = (text = '') => isCodeToken(text.trim());

/** Remove leading internal code tokens, keeping the human-readable remainder. */
export const stripInternalCodes = (text = '') => {
  const value = text.trim();
  if (!value) return '';
  const parts = value.split(/\s+/);
  let index = 0;
  while (index < parts.length && isCodeToken(parts[index])) index += 1;
  if (index === 0) return value;
  const rest = parts.slice(index).join(' ').trim();
  return rest || value;
};