import 'dart:convert';
import 'dart:io';

import 'package:docuframe/docuframe.dart' as df;
import 'package:flutter/material.dart';

import 'package:hl_lieferservice/dto/delivery_response.dart';
import 'package:hl_lieferservice/dto/delivery_update.dart';
import 'package:hl_lieferservice/dto/delivery_update_response.dart';
import 'package:hl_lieferservice/dto/payment.dart';
import 'package:hl_lieferservice/dto/payments.dart';
import 'package:hl_lieferservice/model/car.dart';
import 'package:hl_lieferservice/model/delivery.dart';
import 'package:hl_lieferservice/model/tour.dart';
import 'package:hl_lieferservice/util.dart';
import 'package:hl_lieferservice/services/erpframe.dart';
import 'package:http/http.dart';

import '../../../../dto/basic_response.dart';
import '../../../../dto/discount_add_response.dart';
import '../../../../dto/discount_remove_response.dart';
import '../../../../dto/discount_update_response.dart';
import '../../../../dto/scan_response.dart';
import '../../../authentication/exceptions.dart';

class DeliveryInfoService extends ErpFrameService {
  DeliveryInfoService({required super.config});

  Future<void> updateDelivery(Delivery delivery) async {
    try {
      var headers = {
        "Content-Type": "application/json"
      };
      headers.addAll(getSessionOrThrow());

      debugPrint(getSessionOrThrow().toString());
      debugPrint(jsonEncode(DeliveryUpdateDTO.fromEntity(delivery).toJson()));


      var response = await post(
        urlBuilder("_web_updateDelivery"),
        headers: headers,
        body: jsonEncode(DeliveryUpdateDTO.fromEntity(delivery).toJson()),
      );

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }

      debugPrint("BODY: ${response.body}");
      Map<String, dynamic> responseJson = jsonDecode(response.body);
      DeliveryUpdateResponseDTO responseDto =
          DeliveryUpdateResponseDTO.fromJson(responseJson);

      if (responseDto.code == "200") {
        return;
      }

      debugPrint("ERROR UPDATING:");
      debugPrint(responseDto.message);
    } on df.DocuFrameException catch (e, st) {
      debugPrint("ERROR WHILE UPDATING DELIVERY");
      debugPrint(e.errorMessage);
      debugPrint(e.errorCode);
      debugPrint(st.toString());

      rethrow;
    }
  }

  Future<void> assignCar(String deliveryId, String carId) async {
    try {
      var headers = {
        "Content-Type": "application/json"
      };
      headers.addAll(getSessionOrThrow());

      var response = await post(
        urlBuilder("_web_updateDelivery"),
        headers: headers,
        body: jsonEncode({"delivery_id": deliveryId, "car_id": carId}),
      );

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }

      Map<String, dynamic> responseJson = jsonDecode(response.body);
      DeliveryUpdateResponseDTO responseDto =
      DeliveryUpdateResponseDTO.fromJson(responseJson);

      if (responseDto.code == "200") {
        return;
      }

      debugPrint("ERROR UPDATING:");
      debugPrint(responseDto.message);
    } on df.DocuFrameException catch (e, st) {
      debugPrint("ERROR WHILE UPDATING DELIVERY");
      debugPrint(e.errorMessage);
      debugPrint(e.errorCode);
      debugPrint(st.toString());

      rethrow;
    }
  }

  /// List all available deliveries for today.

  Future<Tour?> getTourOfToday(String userId) async {
    try {
      var response = await post(
        urlBuilder("_web_getDeliveries"),
        headers: getSessionOrThrow(),
        body: {"driver_id": userId, "date": getTodayDate()},
      );

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }
      
      DeliveryResponseDTO responseDto =
          DeliveryResponseDTO.fromJson(jsonDecode(response.body));

      return Tour(
          discountArticleNumber: responseDto.discountArticleNumber,
          date: DateTime.now(),
          deliveries: responseDto.deliveries.map(Delivery.fromDTO).toList(),
          paymentMethods: [],
          driver: Driver(
              cars: responseDto.driver.cars
                  .map((carDto) =>
                      Car(id: int.parse(carDto.id), plate: carDto.plate))
                  .toList(),
              teamNumber: int.parse(responseDto.driver.id),
              name: responseDto.driver.name,
              salutation: responseDto.driver.salutation));
    } catch (e, stacktrace) {
      debugPrint(e.toString());
      debugPrint(stacktrace.toString());
      debugPrint("RANDOM EXCEPTION!");

      rethrow;
    }
  }

  Future<List<PaymentMethodDTO>> getPaymentMethods() async {
    try {
      var response = await post(
        urlBuilder("_web_getPaymentMethods"),
        headers: getSessionOrThrow(),
        body: {},
      );

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }

      Map<String, dynamic> responseJson = jsonDecode(response.body);
      PaymentMethodListDTO responseDto =
          PaymentMethodListDTO.fromJson(responseJson);

      return responseDto.paymentMethods;
    } catch (e, st) {
      debugPrint("ERROR while retrieving allowed payment methods");
      debugPrint(e.toString());
      debugPrint(st.toString());

      rethrow;
    }
  }

  Future<String?> unscanArticle(
      String internalId, int amount, String reason) async {
    try {
      var response = await post(
        urlBuilder("_web_unscanArticle"),
        headers: getSessionOrThrow(),
        body: {
          "article_id": internalId,
          "amount": amount.toString(),
          "reason": reason
        },
      );

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }

      Map<String, dynamic> responseJson = jsonDecode(response.body);
      ScanResponseDTO responseDto = ScanResponseDTO.fromJson(responseJson);

      if (responseDto.succeeded == true) {
        return responseDto.noteId;
      } else {
        throw responseDto.message;
      }
    } catch (e, st) {
      debugPrint("ERROR WHILE REVERTING THE SCAN OF ARTICLE $internalId");
      debugPrint(e.toString());
      debugPrint(st.toString());

      rethrow;
    }
  }

  Future<void> resetScannedArticleAmount(String receiptRowId) async {
    try {
      var response = await post(
        urlBuilder("_web_unscanArticleReset"),
        headers: getSessionOrThrow(),
        body: {"receipt_row_id": receiptRowId},
      );

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }

      Map<String, dynamic> responseJson = jsonDecode(response.body);
      BasicResponseDTO responseDto = BasicResponseDTO.fromJson(responseJson);

      if (responseDto.succeeded == true) {
        return;
      } else {
        throw responseDto.message;
      }
    } catch (e, st) {
      debugPrint("ERROR WHILE REVERTING THE UNSCAN OF ARTICLE $receiptRowId");
      debugPrint(e.toString());
      debugPrint(st.toString());

      rethrow;
    }
  }

  Future<DiscountAddResponseDTO> addDiscount(
      String deliveryId, int discount, String note) async {
    try {
      var response = await post(
        urlBuilder("_web_addDiscount"),
        headers: getSessionOrThrow(),
        body: {
          "delivery_id": deliveryId,
          "discount": discount.toString(),
          "note": note
        },
      );

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }

      Map<String, dynamic> responseJson = jsonDecode(response.body);

      // let it throw, if the values are invalid
      return DiscountAddResponseDTO.fromJson(responseJson);
    } catch (e, st) {
      debugPrint("ERROR while adding discount");
      debugPrint(e.toString());
      debugPrint(st.toString());

      rethrow;
    }
  }

  Future<DiscountRemoveResponseDTO> removeDiscount(String deliveryId) async {
    try {
      var response = await post(
        urlBuilder("_web_removeDiscount"),
        headers: getSessionOrThrow(),
        body: {
          "delivery_id": deliveryId,
        },
      );

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }

      Map<String, dynamic> responseJson = jsonDecode(response.body);

      // let it throw, if the values are invalid
      return DiscountRemoveResponseDTO.fromJson(responseJson);
    } catch (e, st) {
      debugPrint("ERROR while removing discount");
      debugPrint(e.toString());
      debugPrint(st.toString());

      rethrow;
    }
  }

  Future<DiscountUpdateResponseDTO> updateDiscount(
      String deliveryId, String? note, int? discount) async {
    try {
      var response = await post(
        urlBuilder("_web_updateDiscount"),
        headers: getSessionOrThrow(),
        body: {
          "delivery_id": deliveryId,
          "discount": discount,
          "note": note
        },
      );

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }

      Map<String, dynamic> responseJson = jsonDecode(response.body);

      // let it throw, if the values are invalid
      return DiscountUpdateResponseDTO.fromJson(responseJson);
    } catch (e, st) {
      debugPrint("ERROR while retrieving allowed payment methods");
      debugPrint(e.toString());
      debugPrint(st.toString());

      rethrow;
    }
  }

  Future<void> scanArticle(String internalId) async {
    try {
      var response = await post(
        urlBuilder("_web_scanArticle"),
        headers: getSessionOrThrow(),
        body: {"internal_id": internalId},
      );

      debugPrint(jsonEncode({"internal_id": internalId}));

      if (response.statusCode == HttpStatus.unauthorized) {
        throw UserUnauthorized();
      }

      Map<String, dynamic> responseJson = jsonDecode(response.body);
      debugPrint(responseJson.toString());
      ScanResponseDTO responseDto = ScanResponseDTO.fromJson(
        responseJson,
      );

      if (responseDto.succeeded == true) {
        return;
      } else {
        debugPrint("ERROR: ${responseDto.message}");
        throw responseDto.message;
      }
    } catch (e) {
      rethrow;
    }
  }
}