Show temperature of today after starting app

lib/models/daily_weather_model.dart

@@ -1,4 +1,5 @@
 import 'package:wetter/models/hourly_weather_model.dart';
+import 'dart:math';
 
 class DailyWeatherModel {
   late List<HourlyWeatherModel> hourlyForecasts;
@@ -16,6 +17,37 @@ class DailyWeatherModel {
     for (var forecast in hourlyForecasts) {
       tempSum = tempSum + forecast.temperature;
     }
-    return (tempSum / hourlyForecasts.length).toString();
+    return (tempSum / hourlyForecasts.length).round().toString();
+  }
+
+  List<int> tempList() {
+    List<int> temps = [];
+    for (HourlyWeatherModel hf in hourlyForecasts) {
+      temps.add(hf.temperature.round());
+    }
+    return temps;
+  }
+
+  String dailyMaxTemp() {
+    return tempList().reduce(max).toString();
+  }
+
+  String dailyMinTemp() {
+    return tempList().reduce(min).toString();
+  }
+
+  String? cumulatedSunshineMinutes() {
+    bool dataCorrect = true;
+    int csm = 0;
+    for (var hf in hourlyForecasts) {
+      if (hf.sunshine == null) {
+        return null;
+      } else {
+        csm = csm + hf.sunshine!;
+      }
+    }
+    if (dataCorrect) {
+      return csm.toString();
+    }
   }
 }