import 'dart:developer';

import 'package:data_channel/data_channel.dart';
import 'package:dio/dio.dart' show Response;
import 'package:injectable/injectable.dart';

import '../../../common/api/api_client.dart';
import '../../../common/api/api_failure.dart';
import '../../../common/extension/extension.dart';
import '../../../common/function/app_function.dart';
import '../../../common/url/api_path.dart';
import '../../../domain/analytic/analytic.dart';
import '../analytic_dtos.dart';

@injectable
class AnalyticRemoteDataProvider {
  final ApiClient _apiClient;
  final String _logName = "AnalyticRemoteDataProvider";

  AnalyticRemoteDataProvider(this._apiClient);

  Future<DC<AnalyticFailure, SalesAnalyticDto>> fetchSales({
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _apiClient.get(
        ApiPath.salesAnalytic,
        params: params,
        headers: getAuthorizationHeader(),
      );

      if (response.data['data'] == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = SalesAnalyticDto.fromJson(response.data['data']);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log('fetchSalesError', name: _logName, error: e, stackTrace: s);
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, ProfitLossAnalyticDto>> fetchProfitLoss({
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _apiClient.get(
        ApiPath.profitLossAnalytic,
        params: params,
        headers: getAuthorizationHeader(),
      );

      if (response.data['data'] == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = ProfitLossAnalyticDto.fromJson(response.data['data']);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log('fetchProfitLossError', name: _logName, error: e, stackTrace: s);
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, CategoryAnalyticDto>> fetchCategory({
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _apiClient.get(
        ApiPath.categoryAnalytic,
        params: params,
        headers: getAuthorizationHeader(),
      );

      if (response.data['data'] == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = CategoryAnalyticDto.fromJson(response.data['data']);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log('fetchCategoryError', name: _logName, error: e, stackTrace: s);
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, InventoryAnalyticDto>> fetchInventory({
    required String outletId,
    required DateTime dateFrom,
    required DateTime dateTo,
  }) async {
    try {
      final response = await _apiClient.get(
        '${ApiPath.inventoryReportDetail}/$outletId',
        params: {
          'date_from': dateFrom.toServerDate,
          'date_to': dateTo.toServerDate,
        },
        headers: getAuthorizationHeader(),
      );

      if (response.data['data'] == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = InventoryAnalyticDto.fromJson(response.data['data']);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log('fetchInventoryError', name: _logName, error: e, stackTrace: s);
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, DashboardAnalyticDto>> fetchDashboard({
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _apiClient.get(
        ApiPath.dashboardAnalytic,
        params: params,
        headers: getAuthorizationHeader(),
      );

      if (response.data['data'] == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = DashboardAnalyticDto.fromJson(response.data['data']);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log('fetchDashboardError', name: _logName, error: e, stackTrace: s);
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, ProductAnalyticDto>> fetchProduct({
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _apiClient.get(
        ApiPath.productAnalytic,
        params: params,
        headers: getAuthorizationHeader(),
      );

      if (response.data['data'] == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = ProductAnalyticDto.fromJson(response.data['data']);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log('fetchProductError', name: _logName, error: e, stackTrace: s);
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, PaymentMethodAnalyticDto>> fetchPaymentMethod({
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _apiClient.get(
        ApiPath.paymentMethodAnalytic,
        params: params,
        headers: getAuthorizationHeader(),
      );

      if (response.data['data'] == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = PaymentMethodAnalyticDto.fromJson(response.data['data']);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log('fetchPaymentMethodError', name: _logName, error: e, stackTrace: s);
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, PurchasingAnalyticDto>> fetchPurchasing({
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
    String groupBy = 'day',
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
        'group_by': groupBy,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _apiClient.get(
        ApiPath.purchasingAnalytic,
        params: params,
        headers: getAuthorizationHeader(),
      );

      if (response.data['data'] == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = PurchasingAnalyticDto.fromJson(response.data['data']);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log('fetchPurchasingError', name: _logName, error: e, stackTrace: s);
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, ExclusiveSummaryDto>> fetchExclusiveSummary({
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _apiClient.get(
        ApiPath.exclusiveSummaryAnalytic,
        params: params,
        headers: getAuthorizationHeader(),
      );

      if (response.data['data'] == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = ExclusiveSummaryDto.fromJson(response.data['data']);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log(
        'fetchExclusiveSummaryError',
        name: _logName,
        error: e,
        stackTrace: s,
      );
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, ProfitSharingDto>> fetchProfitSharing({
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
    String groupBy = 'day',
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
        'group_by': groupBy,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _getProfitSharing('', params);

      final failure = _profitSharingFailure(response);
      if (failure != null) return DC.error(failure);

      final body = response.data;
      final data = body is Map ? body['data'] : null;
      if (data == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = ProfitSharingDto.fromJson(data);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log('fetchProfitSharingError', name: _logName, error: e, stackTrace: s);
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  Future<DC<AnalyticFailure, ProfitSharingDetailDto>> fetchProfitSharingDetail({
    required String parentCategoryId,
    required DateTime dateFrom,
    required DateTime dateTo,
    String? outletId,
  }) async {
    try {
      final Map<String, dynamic> params = {
        'date_from': dateFrom.toServerDate,
        'date_to': dateTo.toServerDate,
      };
      if (outletId != null) params['outlet_id'] = outletId;

      final response = await _getProfitSharing('/$parentCategoryId', params);

      final failure = _profitSharingFailure(response);
      if (failure != null) return DC.error(failure);

      final body = response.data;
      final data = body is Map ? body['data'] : null;
      if (data == null) {
        return DC.error(AnalyticFailure.empty());
      }

      final dto = ProfitSharingDetailDto.fromJson(data);

      return DC.data(dto);
    } on ApiFailure catch (e, s) {
      log(
        'fetchProfitSharingDetailError',
        name: _logName,
        error: e,
        stackTrace: s,
      );
      return DC.error(AnalyticFailure.serverError(e));
    }
  }

  /// GET ke endpoint profit sharing. Selama backend lama masih jalan path baru
  /// mengembalikan 404, jadi dicoba sekali lagi ke path lama.
  Future<Response> _getProfitSharing(
    String subPath,
    Map<String, dynamic> params,
  ) async {
    Future<Response> request(String basePath) => _apiClient.get(
      '$basePath$subPath',
      params: params,
      headers: getAuthorizationHeader(),
      // Status 5xx tidak dilempar supaya `cause` di body masih bisa dibaca.
      validateStatus: (status) => status != null && status < 600,
    );

    final response = await request(ApiPath.profitSharingAnalytic);
    if (response.statusCode != 404) return response;
    return request(ApiPath.profitSharingAnalyticLegacy);
  }

  /// Failure dari status error endpoint profit sharing, null kalau berhasil.
  /// Detail kategori non-team ditolak 500 dengan `cause` "... is not a team".
  AnalyticFailure? _profitSharingFailure(Response response) {
    final status = response.statusCode ?? 0;
    if (status == 404) {
      return const AnalyticFailure.serverError(ApiFailure.notFound(null));
    }
    if (status < 500) return null;

    final body = response.data;
    final errors = body is Map ? body['errors'] : null;
    final isNotTeam =
        errors is List &&
        errors.any(
          (e) => e is Map && '${e['cause']}'.contains('is not a team'),
        );
    if (isNotTeam) return const AnalyticFailure.notTeam();
    return const AnalyticFailure.serverError(ApiFailure.internalServerError());
  }
}