479 lines
17 KiB
Dart
479 lines
17 KiB
Dart
import 'dart:math';
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import 'package:ernaehrung/android/components/meal_page_text/days_component.dart';
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import 'package:ernaehrung/android/config/cast_helper.dart';
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import 'package:fl_chart/fl_chart.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_dotenv/flutter_dotenv.dart';
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import 'package:hive/hive.dart';
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import '../models/food.dart';
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import '../models/user.dart';
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import 'format_helper.dart';
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class StatisticsService {
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static final StatisticsService _instance = StatisticsService._internal();
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factory StatisticsService() => _instance;
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static StatisticsService get instance => _instance;
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StatisticsService._internal() {
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//initBoxes();
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}
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String todayStatisticsBoxName = dotenv.env['STATISTICS_TODAY_BOX'] ?? 'STATISTICS_TODAY_BOX';
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String mainStatisticsBoxName = dotenv.env['STATISTICS_MAIN_BOX'] ?? 'STATISTICS_MAIN_BOX';
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String progressStatisticsBoxName = dotenv.env['STATISTICS_PROGRESS_BOX'] ?? 'STATISTICS_PROGRESS_BOX';
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ValueNotifier<int> eatenCalories = ValueNotifier<int>(0);
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/*
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* fat 0
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* protein 1
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* carbon 2
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* fat for one day, week, month, 3
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* protein for one day, week, month 4
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* carbon for one day, week, month 5
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* calories for one day, week, month 6
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* */
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ValueNotifier<List<double>> ingredients = ValueNotifier<List<double>>([0,0,0,0,0,0,0]);
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ValueNotifier<int> dailyAverageForCurrentWeek = ValueNotifier<int>(0);
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ValueNotifier<List<Food>> weeklyCaloryRanking = ValueNotifier<List<Food>>([]);
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ValueNotifier<List<BarChartGroupData>> barChartData = ValueNotifier<List<BarChartGroupData>>([]);
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initBoxes()async{
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Box reducedBox = Hive.box(todayStatisticsBoxName);
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Box progressBox = Hive.box(progressStatisticsBoxName);
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putIfKeyNotExists([reducedBox,progressBox], 'FRÜHSTÜCK', []);
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putIfKeyNotExists([reducedBox,progressBox], 'MITTAGESSEN', []);
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putIfKeyNotExists([reducedBox,progressBox], 'ABENDESSEN', []);
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updateStatisticsTodayBoxByTimespan(TimeSpan.day);
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}
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void putIfKeyNotExists(List<Box> boxes, String key, dynamic value) {
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for(int i = 0; i < boxes.length;i++){
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if (!boxes[i].containsKey(key)) {
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boxes[i].put(key, value);
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}
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}
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}
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updateStatisticsTodayBoxByTimespan(TimeSpan timespan){
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clearBoxByBox(Hive.box(todayStatisticsBoxName));
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int timestamp = getTimestampFromNow();
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int dayLen = 1;
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switch(timespan){
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case TimeSpan.day:
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getNewFoodAndUpdateBoxByTimestampAndBox(timestamp, Hive.box(todayStatisticsBoxName));
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break;
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case TimeSpan.week:
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List<int> currentWeek = getTimestampsByTimestampAndTimespan(TimeSpan.week,timestamp);
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for(int i = 0;i < currentWeek.length;i++){
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getNewFoodAndUpdateBoxByTimestampAndBox(currentWeek[i],Hive.box(todayStatisticsBoxName));
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}
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dayLen = currentWeek.length;
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break;
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case TimeSpan.month:
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List<int> currentMonth = getTimestampsByTimestampAndTimespan(TimeSpan.month,timestamp);
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for(int i = 0;i < currentMonth.length;i++){
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getNewFoodAndUpdateBoxByTimestampAndBox(currentMonth[i],Hive.box(todayStatisticsBoxName));
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}
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dayLen = currentMonth.length;
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break;
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}
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updateCalculationsAndNotfiyListenersForPorgressStatistics(dayLen);
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}
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void updateCalculationsAndNotfiyListenersForPorgressStatistics(int dayLen){
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eatenCalories.value = getAllEatenCaloriesByBox(Hive.box(todayStatisticsBoxName));
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ingredients.value = getAllEatenIngredientsForTodayStatistics(dayLen.roundToDouble());
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}
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void getNewFoodAndUpdateBoxByTimestampAndBox(int timestamp, Box box){
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Map<String,List<Food>> newFood = getFoodMapForGivenTimestampFromMainBox(timestamp);
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if(newFood.keys.isNotEmpty){
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setElementsOfBoxByBox(newFood, box);
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}
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}
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bool timestampIsValid(int timestamp){
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try{
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DateTime.fromMillisecondsSinceEpoch(timestamp*1000);
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return true;
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}catch(e){
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return false;
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}
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}
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List<int> getTimestampsByTimestampAndTimespan(TimeSpan timespan, int timestamp) {
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if(!timestampIsValid(timestamp)){
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return [];
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}
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int range = timespan == TimeSpan.week ? 7 : 31;
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int targetWeekday = DateTime.monday; // Example target weekday (Monday)
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DateTime currentDateTime = DateTime.fromMillisecondsSinceEpoch(timestamp * 1000);
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int currentWeekday = currentDateTime.weekday;
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int daysToAdd = targetWeekday - currentWeekday;
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DateTime targetDateTime = currentDateTime.add(Duration(days: daysToAdd));
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List<int> timestampsForWeekdays = [];
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for (int i = 0; i < range; i++) {
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timestampsForWeekdays.add(targetDateTime.millisecondsSinceEpoch ~/ 1000);
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targetDateTime = targetDateTime.add(const Duration(days: 1));
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}
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return timestampsForWeekdays;
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}
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clearBoxByBox(Box box){
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for(int i = 0; i < box.keys.length;i++){
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box.put(box.keys.elementAt(i), []);
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}
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}
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setElementsOfBoxByBox(Map<String,List<Food>> newFood,Box box){
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Iterable<String> keys = newFood.keys;
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for(int i = 0; i < keys.length;i++){
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List<Food> alreadyExisting = castDynamicToListFood(box.get(keys.elementAt(i)));
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alreadyExisting.addAll(newFood[keys.elementAt(i)] as Iterable<Food>);
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box.put(keys.elementAt(i), alreadyExisting);
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}
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}
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getDayAsIntFromTimestamp(int timestamp){
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DateTime dateTime = DateTime.fromMillisecondsSinceEpoch(timestamp * 1000);
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return dateTime.day;
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}
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Map<String,List<Food>> getFoodMapForGivenTimestampFromMainBox(int timestamp){
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Box box = Hive.box(mainStatisticsBoxName);
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dynamic matchingTimestamp = getMatchingTimestamp(box, timestamp);
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if(matchingTimestamp != null){
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return castDynamicMap(box.get(matchingTimestamp));
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}
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return <String,List<Food>>{};
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}
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getMatchingTimestamp(Box box,int newTimestamp){
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if(box.keys.isNotEmpty){
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for(int i = 0; i < box.keys.length;i++){
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int timestamp = box.keys.elementAt(i);
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if(isDateEqual(newTimestamp, timestamp)){
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return timestamp;
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}
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}
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return null;
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}
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}
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getMonthAsIntFromTimestamp(int timestamp){
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DateTime dateTime = DateTime.fromMillisecondsSinceEpoch(timestamp * 1000);
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return dateTime.month;
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}
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getYearAsIntFromTimestamp(int timestamp){
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DateTime dateTime = DateTime.fromMillisecondsSinceEpoch(timestamp * 1000);
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return dateTime.year;
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}
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isDateEqual(int timestamp1, int timestamp2){
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if(!timestampIsValid(timestamp1) || !timestampIsValid(timestamp2)){
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return false;
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}
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return
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getDayAsIntFromTimestamp(timestamp1) == getDayAsIntFromTimestamp(timestamp2) &&
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getMonthAsIntFromTimestamp(timestamp1) == getMonthAsIntFromTimestamp(timestamp2) &&
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getYearAsIntFromTimestamp(timestamp1) == getYearAsIntFromTimestamp(timestamp2);
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}
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addItemToMainBox(Food value, String mealType){
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// Hive.deleteFromDisk();
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Box box = Hive.box(mainStatisticsBoxName);
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DateTime dateTime = DateTime.now();
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// DEBUG
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//DateTime dateTime = getRandomTimestampForTesting();
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int newTimestamp = dateTime.millisecondsSinceEpoch.toInt() ~/ 1000;
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dynamic matchingTimestamp = getMatchingTimestamp(box, newTimestamp);
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if(matchingTimestamp != null){
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newTimestamp = matchingTimestamp;
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}
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Map<String, List<Food>> valueMap = castDynamicMap(box.get(newTimestamp));
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List<Food> values = [];
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if(valueMap.containsKey(mealType)){
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values = valueMap[mealType]!;
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}
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values.add(value);
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valueMap[mealType] = values;
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box.put(newTimestamp, valueMap);
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}
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getRandomTimestampForTesting(){
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DateTime now = DateTime.now();
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DateTime startOfWeek = now.subtract(Duration(days: now.weekday - 1));
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DateTime endOfWeek = startOfWeek.add(const Duration(days: 6));
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Random random = Random();
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int randomMilliseconds = random.nextInt(endOfWeek.millisecondsSinceEpoch - startOfWeek.millisecondsSinceEpoch);
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DateTime randomTimestamp = startOfWeek.add(Duration(milliseconds: randomMilliseconds));
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return randomTimestamp;
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}
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int getAllEatenCaloriesByBox(Box box){
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num sum = 0;
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for(int i = 0; i < box.keys.length;i++){
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for(Food food in box.get(box.keys.elementAt(i))){
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sum += food.calories;
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}
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}
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return sum as int;
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}
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double getCaloryTargetForOneDay(){
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final Box userBox = Hive.box<User>("USER_BOX");
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return userBox.get("USER").kalorien.toDouble();
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}
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List<double> getAllEatenIngredientsForTodayStatistics(double dayLen){
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Box box = Hive.box(todayStatisticsBoxName);
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final Box userBox = Hive.box<User>("USER_BOX");
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final calorieSummary = userBox.get("USER").kalorien;
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const double fatPercentPerThousandCalorie = 3.7;
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const double proteinPercentPerThousandCalorie = 4.5;
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const double carbsPercentPerThousandCalorie = 12.8;
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double fatSummary = (calorieSummary / 100) * fatPercentPerThousandCalorie;
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double carbSummary = (calorieSummary / 100) * carbsPercentPerThousandCalorie;
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double proteinSummary = (calorieSummary / 100) * proteinPercentPerThousandCalorie;
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num fat = 0;
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num protein = 0;
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num carbs = 0;
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for(int i = 0; i < box.keys.length;i++){
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for(Food food in box.get(box.keys.elementAt(i))){
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fat += food.fatg;
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protein += food.proteing;
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carbs += food.carbohydrateg;
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}
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}
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return [
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fat.roundToDouble(),
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protein.roundToDouble(),
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carbs.roundToDouble(),
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fatSummary * dayLen,
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proteinSummary * dayLen,
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carbSummary * dayLen,
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calorieSummary * dayLen
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];
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}
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void updateCalculationsAndNotfiyListenersForTodayStatistics(){
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dailyAverageForCurrentWeek.value = getAverageCaloriesForCurrentWeekOnDailyBasis();
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weeklyCaloryRanking.value = getWeeklyCaloryRanking();
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barChartData.value = getBarChartData();
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}
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void updateProgressBoxValues(){
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Box box = Hive.box(progressStatisticsBoxName);
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box.clear();
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int timestamp = getTimestampFromNow();
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List<int> currentWeek = getTimestampsByTimestampAndTimespan(TimeSpan.week,timestamp);
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for(int i = 0;i < currentWeek.length;i++){
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getNewFoodAndUpdateBoxByTimestampAndBox(currentWeek[i],box);
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}
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updateCalculationsAndNotfiyListenersForTodayStatistics();
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}
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int getAverageCaloriesForCurrentWeekOnDailyBasis(){
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Box box = Hive.box(progressStatisticsBoxName);
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return getAllEatenCaloriesByBox(box)~/7;
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}
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List<Food> getWeeklyCaloryRanking(){
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int timestamp = getTimestampFromNow();
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List<int> currentWeek = getTimestampsByTimestampAndTimespan(TimeSpan.week,timestamp);
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List<Food> allFoodsOfWeek = [];
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for(int i = 0;i < currentWeek.length;i++){
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Map<String,List<Food>> foodFromMainBox = getFoodMapForGivenTimestampFromMainBox(currentWeek[i]);
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Iterable<String> keys = foodFromMainBox.keys;
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if(keys.isNotEmpty){
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for(int i = 0; i < keys.length;i++ ){
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allFoodsOfWeek.addAll(foodFromMainBox[keys.elementAt(i)] as Iterable<Food>);
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}
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}
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}
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allFoodsOfWeek.sort((a, b) => b.calories - a.calories);
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return getListOfDistinctElements(allFoodsOfWeek);
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}
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int getSumOfCaloriesByFoodList(List<Food> foods){
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int sum = 0;
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for(int i = 0; i < foods.length;i++){
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try{
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sum += foods[i].calories as int;
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}catch(e){
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throw const FormatException('please check formats');
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}
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}
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return sum;
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}
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List<BarChartGroupData> getBarChartData(){
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int timestamp = getTimestampFromNow();
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List<int> currentWeek = getTimestampsByTimestampAndTimespan(TimeSpan.week,timestamp);
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int maxValue = 0;
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List<List<int>> result =
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[
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[0,0,0],
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[0,0,0],
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[0,0,0],
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[0,0,0],
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[0,0,0],
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[0,0,0],
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[0,0,0],
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]; //[[breakfast,lunch,dinner],[breakfast,lunch,dinner] ...]
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for(int i = 0;i < currentWeek.length;i++){
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Map<String,List<Food>> foodMapFromMainBoxByTimestamp = getFoodMapForGivenTimestampFromMainBox(currentWeek[i]);
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Iterable<String> keys = foodMapFromMainBoxByTimestamp.keys;
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if(keys.isNotEmpty){
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for(int j = 0; j < keys.length;j++){
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int value = getSumOfCaloriesByFoodList(foodMapFromMainBoxByTimestamp[keys.elementAt(j)] ?? []);
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if(value > maxValue){
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maxValue = value;
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}
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result[i][j] = value;
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}
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}
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}
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return [
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BarChartGroupData(
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x: 0,
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barRods: [BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.yellow,
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toY: result[0][0].toDouble(), // First segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.red,
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toY: result[0][1].toDouble(), // Second segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.green,
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toY: result[0][2].toDouble(), // Second segment color
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),],
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),
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BarChartGroupData(
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x: 1,
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barRods: [BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.yellow,
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toY: result[1][0].toDouble(),
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// First segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.red,
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toY: result[1][1].toDouble(), // Second segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.green,
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toY: result[1][2].toDouble(), // Second segment color
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),],
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),
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BarChartGroupData(
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x: 2,
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barRods: [BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.yellow,
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toY: result[2][0].toDouble(), // First segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.red,
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toY: result[2][1].toDouble(), // Second segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.green,
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toY: result[2][2].toDouble(), // Second segment color
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),],
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),
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BarChartGroupData(
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x: 3,
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barRods: [BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.yellow,
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toY: result[3][0].toDouble(), // First segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.red,
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toY: result[3][1].toDouble(), // Second segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.green,
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toY: result[3][2].toDouble(), // Second segment color
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),],
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showingTooltipIndicators: [0],
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),
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BarChartGroupData(
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x: 4,
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barRods: [BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.yellow,
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toY: result[4][0].toDouble(), // First segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.red,
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toY: result[4][1].toDouble(), // Second segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.green,
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toY: result[4][2].toDouble(), // Second segment color
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),],
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),
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BarChartGroupData(
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x: 5,
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barRods: [BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.yellow,
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toY: result[5][0].toDouble(), // First segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.red,
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toY: result[5][1].toDouble(), // Second segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.green,
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toY: result[5][2].toDouble(), // Second segment color
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),],
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),
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BarChartGroupData(
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x: 6,
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barRods: [BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.yellow,
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toY: result[6][0].toDouble(), // First segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.red,
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toY: result[6][1].toDouble(), // Second segment color
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), BarChartRodData(
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width: 7.5, // Adjust the width of the bar if needed
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color: Colors.green,
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toY: result[6][2].toDouble(), // Second segment color
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),], showingTooltipIndicators: [0],
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),
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];
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}
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getTimestampFromNow(){
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DateTime now = DateTime.now();
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return now.millisecondsSinceEpoch.toInt() ~/ 1000;
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}
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List<Food> getMealsOfTodayByMealtype(String mealtype){
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int timestamp = getTimestampFromNow();
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return getFoodMapForGivenTimestampFromMainBox(timestamp)[mealtype] ?? [];
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}
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} |