import '../generated/i18n/app_localizations.dart';

abstract final class AuthValidation {
  static String? email(String? value, AppLocalizations l) {
    final email = value?.trim() ?? '';
    if (email.isEmpty) return l.emailRequired;
    if (!RegExp(r'^[^\s@]+@[^\s@]+\.[^\s@]+$').hasMatch(email)) {
      return l.emailInvalid;
    }
    return null;
  }

  static String? name(String? value, AppLocalizations l) =>
      (value?.trim().isEmpty ?? true) ? l.nameRequired : null;

  static String? password(
    String? value,
    AppLocalizations l, {
    required bool signUp,
  }) {
    if (value == null || value.isEmpty) return l.passwordRequired;
    if (signUp && value.length < 12) return l.passwordHint;
    return null;
  }

  static String? confirmation(
    String? value,
    String password,
    AppLocalizations l,
  ) => value == null || value.isEmpty
      ? l.confirmationRequired
      : value != password
      ? l.passwordMismatch
      : null;
}