hade_hoda_flutter/lib/features/question/data/datasource/question_datasource.dart

import 'package:hadi_hoda_flutter/core/constants/my_constants.dart';
import 'package:hadi_hoda_flutter/core/error_handler/my_exception.dart';
import 'package:hadi_hoda_flutter/core/params/question_params.dart';
import 'package:hadi_hoda_flutter/core/utils/local_storage.dart';
import 'package:hadi_hoda_flutter/features/level/domain/entity/level_entity.dart';
import 'package:hadi_hoda_flutter/features/level/domain/entity/node_entity.dart';
import 'package:hadi_hoda_flutter/features/level/domain/entity/total_data_entity.dart';
import 'package:hive/hive.dart';

abstract class IQuestionDatasource {
  Future<LevelEntity> getLevel({required QuestionParams params});
  Future<LevelEntity> getNextLevel({required QuestionParams params});
}

/// Local
class QuestionDatasourceImpl implements IQuestionDatasource {
  const QuestionDatasourceImpl();

  @override
  Future<LevelEntity> getLevel({required QuestionParams params}) async {
    try {
      final String selectedLanguage = LocalStorage.readData(
          key: MyConstants.selectLanguage) ?? MyConstants.defaultLanguage;
      final Box<TotalDataEntity> levelBox = Hive.box(MyConstants.levelBox);
      final TotalDataEntity findData = levelBox.values.singleWhere(
        (e) => e.code == selectedLanguage,
        orElse: () => TotalDataEntity(),
      );
      final NodeEntity? findLevel = findData.nodes?.singleWhere(
        (e) => e.level?.id == params.id,
        orElse: () => NodeEntity(),
      );
      return findLevel?.level ?? LevelEntity();
    } catch (e) {
      throw MyException(errorMessage: '$e');
    }
  }

  @override
  Future<LevelEntity> getNextLevel({required QuestionParams params}) async {
    try {
      final String selectedLanguage = LocalStorage.readData(
          key: MyConstants.selectLanguage) ?? MyConstants.defaultLanguage;
      final int index = int.parse(
          LocalStorage.readData(key: MyConstants.currentLevel) ?? '1');
      final Box<TotalDataEntity> levelBox = Hive.box(MyConstants.levelBox);
      final TotalDataEntity findData = levelBox.values.singleWhere(
            (e) => e.code == selectedLanguage,
        orElse: () => TotalDataEntity(),
      );
      if(index > (findData.nodes?.length ?? 0)){
        throw MyException();
      }
      final NodeEntity? findLevel = findData.nodes?.singleWhere(
            (e) => e.level?.order == index,
        orElse: () => NodeEntity(),
      );
      return findLevel?.level ?? LevelEntity();
    } catch (e) {
      throw MyException(errorMessage: '$e');
    }
  }
}