import 'package:dio/dio.dart';

/// Helpers pour parser les réponses JSON de l'API Laverie (`success` + `data`).
abstract final class ApiResponse {  static Map<String, dynamic> payload(dynamic data) {
    if (data is Map<String, dynamic>) {
      if (data['data'] is Map<String, dynamic>) {
        return data['data'] as Map<String, dynamic>;
      }
      return data;
    }
    throw StateError('Réponse API inattendue');
  }

  static List<dynamic> list(dynamic data, String key) {
    final value = payload(data)[key];
    if (value is List<dynamic>) {
      return value;
    }
    return [];
  }

  static Map<String, dynamic> object(dynamic data, String key) {
    final value = payload(data)[key];
    if (value is Map<String, dynamic>) {
      return value;
    }
    throw StateError('Champ API "$key" introuvable ou invalide');
  }

  static String errorMessage(DioException error, {String fallback = 'Erreur réseau'}) {
    final response = error.response;
    if (response?.data is Map<String, dynamic>) {
      final data = response!.data as Map<String, dynamic>;
      final message = data['message'];
      if (message is String && message.isNotEmpty) {
        return _sanitize(message);
      }
    }

    return switch (error.type) {
      DioExceptionType.connectionTimeout ||
      DioExceptionType.sendTimeout ||
      DioExceptionType.receiveTimeout =>
        'Délai d\'attente dépassé',
      DioExceptionType.connectionError =>
        'Connexion impossible',
      _ => fallback,
    };
  }

  /// Masque les détails SQL techniques pour l'utilisateur.
  static String _sanitize(String message) {
    if (message.contains('SQLSTATE') || message.contains('SQL:') || message.contains('must be of type')) {
      return 'Erreur serveur — réessayez dans un instant';
    }
    return message;
  }
}