import 'package:fl_chart/fl_chart.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

/// Monthly/Yearly expenses [LineChart]
class ExpensesChart extends StatelessWidget {
  const ExpensesChart(
      {super.key,
      required this.date,
      required this.locale,
      this.data = const [],
      this.yearly = false});
  final bool yearly;
  final DateTime date;
  final String locale;
  final List<double> data;
  List<double> get dataSorted {
    var list = List<double>.from(data);
    list.sort((a, b) => a.compareTo(b));
    return list;
  }

  @override
  Widget build(BuildContext context) {
    return LineChart(
      LineChartData(
        maxX: (yearly) ? 12 : DateTime(date.year, date.month, 0).day.toDouble(),
        maxY: dataSorted.last,
        minX: 1,
        minY: 0,
        backgroundColor: Theme.of(context).colorScheme.background,
        lineBarsData: [
          LineChartBarData(
            isCurved: true,
            barWidth: 8,
            isStrokeCapRound: true,
            dotData: const FlDotData(show: false),
            belowBarData: BarAreaData(show: false),
            color: Theme.of(context).colorScheme.primary,
            spots: List.generate(
              (yearly) ? 12 : DateTime(date.year, date.month, 0).day,
              (index) => FlSpot(index.toDouble() + 1, data[index]),
            ),
          ),
        ], // actual data
        titlesData: FlTitlesData(
          rightTitles: const AxisTitles(
            sideTitles: SideTitles(showTitles: false),
          ),
          topTitles: const AxisTitles(
            sideTitles: SideTitles(showTitles: false),
          ),
          bottomTitles: AxisTitles(
            sideTitles: SideTitles(
              showTitles: true,
              getTitlesWidget: (value, meta) {
                String text;
                if (yearly) {
                  text = DateFormat.MMM(locale).format(
                    DateTime(date.year, value.toInt(), 1),
                  );
                } else {
                  text = value.toInt().toString();
                }
                return SideTitleWidget(
                    axisSide: meta.axisSide, child: Text(text));
              },
            ),
          ),
        ), // axis descriptions
      ),
    );
  }
}