widget for line graph

lib/widgets/line_chart_widget.dart

@@ -0,0 +1,39 @@
+import 'package:flutter/material.dart';
+import 'package:intl/intl.dart';
+import 'package:provider/provider.dart';
+import 'package:smoke_cess_app/providers/settings_provider.dart';
+import 'package:syncfusion_flutter_charts/charts.dart';
+
+class LineChart<T> extends StatelessWidget {
+  final List<T> dataSource;
+  final DateTime? Function(T, int) xValueMapper;
+  final num? Function(T, int) yValueMapper;
+  const LineChart(
+      {super.key,
+      required this.dataSource,
+      required this.xValueMapper,
+      required this.yValueMapper});
+
+  @override
+  Widget build(BuildContext context) {
+    SettingsProvider settingsProvider = context.watch<SettingsProvider>();
+
+    return SfCartesianChart(
+      primaryXAxis: DateTimeAxis(
+        minimum: settingsProvider.settings?.startedAt,
+        maximum: settingsProvider.settings?.startedAt
+            .add(const Duration(days: 7 * 6)),
+        interval: 7,
+        dateFormat: DateFormat.Md('de'),
+      ),
+      primaryYAxis:
+          NumericAxis(isVisible: false, minimum: 0, maximum: 100, interval: 20),
+      series: <ChartSeries>[
+        LineSeries<T, DateTime>(
+            dataSource: dataSource,
+            xValueMapper: xValueMapper,
+            yValueMapper: yValueMapper),
+      ],
+    );
+  }
+}