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lib/shared/widgets/chart_widgets/line_chart_widget.dart

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+import 'package:fl_chart/fl_chart.dart';
+import 'package:flutter/material.dart';
+
+class LineChartWidget extends StatelessWidget {
+  const LineChartWidget({
+    required this.spots,
+    this.title,
+    this.lineColor,
+    this.gradientColors,
+    this.minY,
+    this.maxY,
+    this.showGrid = true,
+    this.bottomTitles,
+    this.leftTitles,
+    super.key,
+  });
+
+  final List<FlSpot> spots;
+  final String? title;
+  final Color? lineColor;
+  final List<Color>? gradientColors;
+  final double? minY;
+  final double? maxY;
+  final bool showGrid;
+  final Widget Function(double, TitleMeta)? bottomTitles;
+  final Widget Function(double, TitleMeta)? leftTitles;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final primaryColor = lineColor ?? theme.colorScheme.primary;
+    final colors = gradientColors ??
+        [
+          primaryColor,
+          primaryColor.withValues(alpha: 0.3),
+        ];
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        if (title != null)
+          Padding(
+            padding: const EdgeInsets.only(bottom: 16),
+            child: Text(
+              title!,
+              style: theme.textTheme.titleMedium?.copyWith(
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+          ),
+        Expanded(
+          child: LineChart(
+            LineChartData(
+              gridData: FlGridData(show: showGrid),
+              titlesData: FlTitlesData(
+                topTitles: const AxisTitles(
+                  sideTitles: SideTitles(showTitles: false),
+                ),
+                rightTitles: const AxisTitles(
+                  sideTitles: SideTitles(showTitles: false),
+                ),
+                bottomTitles: AxisTitles(
+                  sideTitles: SideTitles(
+                    showTitles: true,
+                    getTitlesWidget: bottomTitles ??
+                        (value, meta) => SideTitleWidget(
+                              meta: meta,
+                              child: Text(
+                                value.toInt().toString(),
+                                style: theme.textTheme.bodySmall,
+                              ),
+                            ),
+                  ),
+                ),
+                leftTitles: AxisTitles(
+                  sideTitles: SideTitles(
+                    showTitles: true,
+                    reservedSize: 40,
+                    getTitlesWidget: leftTitles ??
+                        (value, meta) => SideTitleWidget(
+                              meta: meta,
+                              child: Text(
+                                value.toInt().toString(),
+                                style: theme.textTheme.bodySmall,
+                              ),
+                            ),
+                  ),
+                ),
+              ),
+              borderData: FlBorderData(show: false),
+              minY: minY,
+              maxY: maxY,
+              lineBarsData: [
+                LineChartBarData(
+                  spots: spots,
+                  isCurved: true,
+                  color: primaryColor,
+                  barWidth: 3,
+                  isStrokeCapRound: true,
+                  dotData: const FlDotData(show: false),
+                  belowBarData: BarAreaData(
+                    show: true,
+                    gradient: LinearGradient(
+                      colors: colors,
+                      begin: Alignment.topCenter,
+                      end: Alignment.bottomCenter,
+                    ),
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+}