import '../l10n/l10n.dart';

class Validators {
  Validators._();

  static String? phone(String? value) {
    if (value == null || value.isEmpty) {
      return L10n.current.validatorPhoneRequired;
    }
    final phoneRegex = RegExp(r'^\+861[3-9]\d{9}$');
    if (!phoneRegex.hasMatch(value)) {
      return L10n.current.validatorPhoneInvalid86;
    }
    return null;
  }

  static String? password(String? value) {
    if (value == null || value.isEmpty) {
      return L10n.current.validatorPasswordRequired;
    }
    if (value.length < 8) {
      return L10n.current.validatorPasswordMin8;
    }
    return null;
  }

  static String? required(String? value, [String? fieldName]) {
    if (value == null || value.isEmpty) {
      return L10n.current.validatorRequired(
        fieldName ?? L10n.current.commonUnknown,
      );
    }
    return null;
  }

  static String? nickname(String? value) {
    if (value == null || value.isEmpty) {
      return L10n.current.validatorNicknameRequired;
    }
    if (value.length < 2) {
      return L10n.current.validatorNicknameMin2;
    }
    return null;
  }
}