src/utils/passwordValidation.ts

/**
 * Password strength validation utility
 * Requirements:
 * - At least 8 characters
 * - Contains at least one letter
 * - Contains at least one number
 * - Contains at least one special character
 */

export interface PasswordValidationResult {
  isValid: boolean;
  errors: string[];
}

export const validatePasswordStrength = (password: string): PasswordValidationResult => {
  const errors: string[] = [];

  // Check minimum length
  if (password.length < 8) {
    errors.push('Password must be at least 8 characters long');
  }

  // Check for at least one letter
  if (!/[a-zA-Z]/.test(password)) {
    errors.push('Password must contain at least one letter');
  }

  // Check for at least one number
  if (!/\d/.test(password)) {
    errors.push('Password must contain at least one number');
  }

  // Check for at least one special character
  if (!/[!@#$%^&*()_+\-=[\]{};':"\\|,.<>/?]/.test(password)) {
    errors.push('Password must contain at least one special character');
  }

  return {
    isValid: errors.length === 0,
    errors,
  };
};

/**
 * Check if a password is the default password (admin123)
 */
export const isDefaultPassword = (plainPassword: string): boolean => {
  return plainPassword === 'admin123';
};