import 'dart:convert';

import 'package:aman_kassa_flutter/core/base/base_service.dart';
import 'package:aman_kassa_flutter/core/entity/Category.dart';
import 'package:aman_kassa_flutter/core/entity/Goods.dart';
import 'package:aman_kassa_flutter/core/entity/Service.dart';
import 'package:aman_kassa_flutter/core/locator.dart';
import 'package:aman_kassa_flutter/core/models/calc_model.dart';
import 'package:aman_kassa_flutter/core/models/check_data.dart';
import 'package:aman_kassa_flutter/core/models/check_item.dart';
import 'package:aman_kassa_flutter/core/models/product_dao.dart';
import 'package:aman_kassa_flutter/core/models/response.dart';
import 'package:aman_kassa_flutter/core/models/user.dart';
import 'package:aman_kassa_flutter/core/services/DbService.dart';
import 'package:aman_kassa_flutter/redux/constants/operation_const.dart';
import 'package:aman_kassa_flutter/redux/constants/setting_const.dart';
import 'package:aman_kassa_flutter/redux/store.dart';

import 'ApiService.dart';

class DataService extends BaseService {
  final ApiService _api = locator<ApiService>();
  final DbService _db = locator<DbService>();

  Future<List<Category>> getCategoriesByParentId({int parentId}) async {
    List<Map<String, dynamic>> list = await _db.queryRowsWithWhere(
        Category_tableName, '$Category_columnParentIn = ?', [parentId ?? 0]);
    return list.map((e) => Category.fromMap(e)).toList();
  }

  Future<List<Service>> getServices() async {
    List<Map<String, dynamic>> list = await _db.queryAllRows(Service_tableName);
    return list.map((e) => Service.fromMap(e)).toList();
  }

  Future<List<Good>> getGoodsByCategoryId({int categoryId}) async {
    List<Map<String, dynamic>> list = await _db.queryRowsWithWhere(
        Goog_tableName, '$Goog_columnCategoryId  = ?', [categoryId ?? 0]);
    return list.map((e) => Good.fromMap(e)).toList();
  }

  CheckData _transformProductsToCheckData(
      {String paymentType, String tradeType, List<ProductDao> items}) {
    List<CheckItem> itemsList = [];
    int iterator = 1;
    num summ = 0.0;
    items.forEach((el) {
      int articul = iterator;
      if (el.service != null) {
        articul = el.service.articul;
      } else if (el.good != null) {
        articul = el.good.articul;
      }
      itemsList.add(CheckItem(
          name: el.name ?? 'Позиция №$iterator',
          cnt: el.count,
          price: el.price,
          articul: articul));
      summ += el.total;
      iterator++;
    });
    CheckData checkData = CheckData(type: tradeType, items: itemsList);
    if ((paymentType ?? 'cash') == 'card') {
      checkData.card = summ;
    }
    return checkData;
  }

  CheckData _transformCalcModelToCheckData(
      {String paymentType, String tradeType, List<CalcModel> items}) {
    List<CheckItem> itemsList = [];
    int iterator = 1;
    num summ = 0.0;
    items.forEach((el) {
      int articul = iterator;
      CheckItem item = CheckItem(
          name: 'Позиция $iterator',
          cnt: el.num2 != null ? double.parse(el.num2) : 1.0,
          price: double.parse(el.num1) ,
          articul: articul);

      summ += item.cnt * item.price;
      itemsList.add(item);
      iterator++;
    });
    CheckData checkData = CheckData(type: tradeType, items: itemsList);
    if ((paymentType ?? 'cash') == 'card') {
      checkData.card = summ;
    }
    return checkData;
  }

  Future<Response<dynamic>> sellOrReturn(
      {String paymentType,
      String tradeType,
      String token,
      List<ProductDao> kassaItems,
      List<CalcModel> calcItems,
      String operationType,
      String mode}) async {
    try {
      String data;
      if(mode == SettingModeKassa) {
        CheckData checkData = _transformProductsToCheckData(
            paymentType: paymentType, tradeType: tradeType, items: kassaItems);
        data = jsonEncode(checkData.toJson());
      } else if(mode == SettingModeCalc) {
        CheckData checkData = _transformCalcModelToCheckData(
            paymentType: paymentType, tradeType: tradeType, items: calcItems);
        data = jsonEncode(checkData.toJson());
      }


      log.i('token: $token');
      log.i('data: $data');
      Response<dynamic> response = await (operationType == OperationTypePay
          ? _api.sell(token, data)
          : _api.sellReturn(token, data));
      log.i('response status: ${response.status}');
      log.i('response operation: ${response.operation}');
      if (response.status == 200 && response.operation == true) {
        log.i(
            'save to db appCompanyId: ${Redux.store.state.userState.user.appCompanyId}, kassaId: ${Redux.store.state.userState.user.kassaId}');
        /* save data to db
         *  data,
         *  dateTime,
         *  check,
         *  appCompanyId,
         *  kassaId,
         *  total,
         *  name,
         *  type
         */
      }
      return response;
    } catch (e) {
      print(e);
    }
    return null;
  }

  Future<void> checkDbFill(User user) async {
    int serviceCount = await _db.queryRowCount(Service_tableName);
    if( serviceCount ==0) {
      int goodCount = await _db.queryRowCount(Goog_tableName);
      if(goodCount == 0){
        await getDataFromServer(user);
      } else {
        log.i('$Goog_tableName is Fill');
      }
    } else {
      log.i('$Service_tableName is Fill');
    }
  }

  Future<bool> getDataFromServer(User user) async {
    log.i('Get Data from server');
    try {
      String token = user.token;
      Response<dynamic> goods = await _api.getGoodsFromServer(token);
      Response<dynamic> categories = await _api.getCategoryFromServer(token);
      Response<dynamic> services = await _api.getServiceFromServer(token);
      await _db.deleteAll(Goog_tableName);
      await _db.deleteAll(Category_tableName);
      await _db.deleteAll(Service_tableName);
      log.i('All tables cleaned');
      for (var key in goods.body.keys) {
        Good row = Good.fromJson(goods.body[key]);
        await _db.insert(Goog_tableName, row.toMap());
      }
      log.i('Inserted ${goods.body.length} to table $Goog_tableName');

      for (var el in categories.body) {
        Category row = Category.fromJson(el);
        await _db.insert(Category_tableName, row.toMap());
      }
      log.i('Inserted ${categories.body.length} to table $Category_tableName');

      for (var key in services.body.keys) {
        Service row = Service.fromJson(services.body[key]);
        await _db.insert(Service_tableName, row.toMap());
      }
      log.i('Inserted ${services.body.length} to table $Service_tableName');

      return true;
    } catch (e) {
      print(e);
      return false;
    }
  }
}