import 'package:dartz/dartz.dart';
import 'package:dio/dio.dart';
import 'package:injectable/injectable.dart';
import 'package:superport/core/errors/failures.dart';
import 'package:superport/data/datasources/remote/api_client.dart';
import 'package:superport/data/models/lookups/lookup_data.dart';

abstract class LookupRemoteDataSource {
  Future<Either<Failure, LookupData>> getAllLookups();
  Future<Either<Failure, Map<String, List<LookupItem>>>> getLookupsByType(String type);
}

@LazySingleton(as: LookupRemoteDataSource)
class LookupRemoteDataSourceImpl implements LookupRemoteDataSource {
  final ApiClient _apiClient;

  LookupRemoteDataSourceImpl(this._apiClient);

  @override
  Future<Either<Failure, LookupData>> getAllLookups() async {
    try {
      final response = await _apiClient.get('/lookups');
      
      if (response.data != null && response.data['success'] == true && response.data['data'] != null) {
        final lookupData = LookupData.fromJson(response.data['data']);
        return Right(lookupData);
      } else {
        final errorMessage = response.data?['error']?['message'] ?? '응답 데이터가 올바르지 않습니다';
        return Left(ServerFailure(message: errorMessage));
      }
    } on DioException catch (e) {
      return Left(_handleDioError(e));
    } catch (e) {
      return Left(ServerFailure(message: '조회 데이터를 가져오는 중 오류가 발생했습니다: $e'));
    }
  }

  @override
  Future<Either<Failure, Map<String, List<LookupItem>>>> getLookupsByType(String type) async {
    try {
      final response = await _apiClient.get(
        '/lookups/type',
        queryParameters: {'lookup_type': type},
      );
      
      if (response.data != null && response.data['success'] == true && response.data['data'] != null) {
        final data = response.data['data'] as Map<String, dynamic>;
        final result = <String, List<LookupItem>>{};
        
        data.forEach((key, value) {
          if (value is List) {
            result[key] = value.map((item) => LookupItem.fromJson(item)).toList();
          }
        });
        
        return Right(result);
      } else {
        final errorMessage = response.data?['error']?['message'] ?? '응답 데이터가 올바르지 않습니다';
        return Left(ServerFailure(message: errorMessage));
      }
    } on DioException catch (e) {
      return Left(_handleDioError(e));
    } catch (e) {
      return Left(ServerFailure(message: '타입별 조회 데이터를 가져오는 중 오류가 발생했습니다: $e'));
    }
  }

  Failure _handleDioError(DioException error) {
    switch (error.type) {
      case DioExceptionType.connectionTimeout:
      case DioExceptionType.sendTimeout:
      case DioExceptionType.receiveTimeout:
        return NetworkFailure(message: '네트워크 연결 시간이 초과되었습니다');
      case DioExceptionType.connectionError:
        return NetworkFailure(message: '서버에 연결할 수 없습니다');
      case DioExceptionType.badResponse:
        final statusCode = error.response?.statusCode ?? 0;
        final errorData = error.response?.data;
        
        String message;
        if (errorData is Map) {
          message = errorData['error']?['message'] ?? 
                   errorData['message'] ?? 
                   '서버 오류가 발생했습니다';
        } else {
          message = '서버 오류가 발생했습니다';
        }
        
        if (statusCode == 401) {
          return AuthenticationFailure(message: '인증이 만료되었습니다');
        } else if (statusCode == 403) {
          return AuthenticationFailure(message: '접근 권한이 없습니다');
        } else {
          return ServerFailure(message: message);
        }
      case DioExceptionType.cancel:
        return ServerFailure(message: '요청이 취소되었습니다');
      default:
        return ServerFailure(message: '알 수 없는 오류가 발생했습니다');
    }
  }
}