import { useMemo } from 'react';

export type PasswordStrength = 'weak' | 'medium' | 'strong' | null;

/** Length-based password strength heuristic shared by every reset/create-password screen. */
export function usePasswordStrength(password: string): PasswordStrength {
  return useMemo(() => {
    if (password.length === 0) return null;
    if (password.length < 6) return 'weak';
    if (password.length < 10) return 'medium';
    return 'strong';
  }, [password]);
}