basic csv loader, transaction list & half done stats page

lib/pages/stats/widgets/profit_indicator.dart

@@ -0,0 +1,41 @@
+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
+        ),
+      )
+    );
+  }
+}