import 'package:flutter/material.dart';
import 'package:charts_flutter/flutter.dart' as charts;
import 'package:healthcare_user/common/settings.dart';
class SalesData {
  final int year;
  final int sales;

  SalesData(this.year, this.sales);
}

final data = [
  new SalesData(0, 1500000),
  new SalesData(1, 1735000),
  new SalesData(2, 1678000),
  new SalesData(3, 1890000),
  new SalesData(4, 1907000),
  new SalesData(5, 2300000),
  new SalesData(6, 2360000),
  new SalesData(7, 1980000),
  new SalesData(8, 2654000),
  new SalesData(9, 2789070),
  new SalesData(10, 3020000),
  new SalesData(11, 3245900),
  new SalesData(12, 4098500),
  new SalesData(13, 4500000),
  new SalesData(14, 4456500),
  new SalesData(15, 3900500),
  new SalesData(16, 5123400),
  new SalesData(17, 5589000),
  new SalesData(18, 5940000),
  new SalesData(19, 6367000),
];


_getSeriesData() {
  List<charts.Series<SalesData, int>> series = [
    charts.Series(
        id: "Sales",
        data: data,
        domainFn: (SalesData series, _) => series.year,
        measureFn: (SalesData series, _) => series.sales,
        colorFn: (SalesData series, _) => charts.MaterialPalette.blue.shadeDefault
    )
  ];
  return series;
}

class Bpchart extends StatefulWidget {
  const Bpchart({Key? key}) : super(key: key);

  @override
  State<Bpchart> createState() => _BpchartState();
}

class _BpchartState extends State<Bpchart> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppSettings.appBar('Bp chart'),
      body: Container(
        child:new charts.LineChart(_getSeriesData(), animate: true,),
      ),
    );
  }
}