From e7dc40a4deb2b1f83056d602814733f680a37f9e Mon Sep 17 00:00:00 2001
From: Crondung <1922635@stud.hs-mannheim.de>
Date: Mon, 6 Mar 2023 00:04:59 +0100
Subject: [PATCH] util funciton to calculate duration between two times => calc
 sleepTime

---
 lib/models/sleep.dart     |  2 ++
 lib/utils/timer_util.dart | 11 +++++++++++
 2 files changed, 13 insertions(+)

diff --git a/lib/models/sleep.dart b/lib/models/sleep.dart
index 4447be4..991de20 100644
--- a/lib/models/sleep.dart
+++ b/lib/models/sleep.dart
@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:smoke_cess_app/interface/db_record.dart';
+import 'package:smoke_cess_app/utils/timer_util.dart';
 
 class Sleep implements DatabaseRecord {
   final int _sleepQualityValue;
@@ -13,6 +14,7 @@ class Sleep implements DatabaseRecord {
 
   DateTime get date => _date;
   int get sleepQualitiyValue => _sleepQualityValue;
+  TimeOfDay get sleepDuration => _sleptAt.durationBetween(_wokeUpAt);
 
   @override
   factory Sleep.fromDatabase(Map<String, dynamic> map) {
diff --git a/lib/utils/timer_util.dart b/lib/utils/timer_util.dart
index a63030f..42a9180 100644
--- a/lib/utils/timer_util.dart
+++ b/lib/utils/timer_util.dart
@@ -1,3 +1,5 @@
+import 'package:flutter/material.dart';
+
 String formatTime(int seconds) {
   Duration duration = Duration(seconds: seconds);
   String formattedTime = '';
@@ -12,3 +14,12 @@ String formatTime(int seconds) {
   formattedTime += formattedSeconds;
   return formattedTime;
 }
+
+extension TimeOfDayExtension on TimeOfDay {
+  TimeOfDay durationBetween(TimeOfDay time) {
+    int hourOffset = time.minute - minute < 0 ? 1 : 0;
+    return TimeOfDay(
+        hour: (time.hour - hour - hourOffset) % 24,
+        minute: (time.minute - minute) % 60);
+  }
+}