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

class ProfitIndicator extends StatelessWidget {
  final List<FlSpot> monthlyTotals;
  
  const ProfitIndicator({super.key, required this.monthlyTotals});

  double _profit() {
    if (monthlyTotals.isEmpty) {
      return 0;
    }
    final maxDateSpot = monthlyTotals.reduce((value, element) => value.x > element.x ? value : element);
    final minDateSpot = monthlyTotals.reduce((value, element) => value.x < element.x ? value : element);

    return maxDateSpot.y - minDateSpot.y;
  }

  @override
  Widget build(BuildContext context) {
    final profit = _profit();
    return Container(
      margin: const EdgeInsets.fromLTRB(0, 0, 20, 0),
      padding: const EdgeInsets.fromLTRB(10, 5, 10, 5),
      decoration: BoxDecoration(
        color: Colors.blue,
        borderRadius: BorderRadius.circular(5)
      ),
      child: Text(
        "Profit ${NumberFormat('#####00.00 €', 'fr_FR').format(profit)}",
        style: TextStyle(
          fontFamily: 'NovaMono',
          fontSize: 20,
          fontWeight: FontWeight.w500,
          color: profit > 0 ? const Color.fromARGB(255, 0, 255, 8) : Colors.red
        ),
      )
    );
  }
}