Flutter-Ernaehrungsapp/lib/android/config/statistics.dart

import 'package:hive/hive.dart';

import '../models/food.dart';

class StatisticsService {

  final String boxName = 'STATISTICS';

  StatisticsService()  {
    initBox();
  }

  initBox()async{
    await Hive.openBox(boxName);
  }


  addItemToStatisticsBox(Food value, String mealType){
    // Hive.deleteFromDisk();
    Box box = Hive.box(boxName);
    DateTime dateTime = DateTime.now();
    int timestamp = dateTime.millisecondsSinceEpoch.toInt() ~/ 1000;
    print(timestamp);
    Map<String, List<Food>>? valueMap = box.get(timestamp);
    valueMap ??= {
        "FRÜHSTÜCK": [],
        "MITTAGESSEN": [],
        "ABENDESSEN": []
      };
    List<Food> values = [];
    if(valueMap.containsKey(mealType)){
      values = valueMap[mealType]!;
    }
    values.add(value);
    valueMap[mealType] = values;
    box.put(timestamp, valueMap);
    showItems();
  }

  num getAllCaloriesByTimestamp(DateTime date){
    Box box = Hive.box(boxName);
    int  timestamp = date.millisecondsSinceEpoch.toInt() ~/ 1000;
    Map<String, List<Food>>? valueMap = box.get(timestamp);
    if(valueMap == null){
      return 0;
    }
    num sum = 0;
    for(var mealType in valueMap.keys){
      if(valueMap.containsKey(mealType)){
        List<Food> values = valueMap[mealType]!;
        for(var value in values){
          sum += value.calories;
        }
      }
    }
    return sum;
  }

  num getCaloriesByTimestampAndMealType(DateTime date, String mealType){
    Box box = Hive.box(boxName);
    int  timestamp = date.millisecondsSinceEpoch.toInt() ~/ 1000;
    Map<String, List<Food>>? valueMap = box.get(timestamp);
    if(valueMap == null){
      return 0;
    }
    num sum = 0;
    if(valueMap.containsKey(mealType)){
      List<Food> values = valueMap[mealType]!;
      for(var value in values){
        sum += value.calories;
      }
    }
    return sum;
  }

  showItems(){
    print("ITEMS");
    print(Hive.box(boxName).keys);
  }

}