import 'package:flutter/material.dart';
import 'package:fl_chart/fl_chart.dart';
import '../../../../shared/theme/app_theme.dart';

class ChartCard extends StatelessWidget {
  final String title;
  final Widget chart;
  final String? subtitle;
  final VoidCallback? onTap;

  const ChartCard({
    super.key,
    required this.title,
    required this.chart,
    this.subtitle,
    this.onTap,
  });

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTap: onTap,
      child: Container(
        padding: const EdgeInsets.all(20),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(16),
          boxShadow: [
            BoxShadow(
              color: Colors.black.withOpacity(0.08),
              blurRadius: 15,
              offset: const Offset(0, 4),
            ),
          ],
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Row(
              children: [
                Expanded(
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        title,
                        style: const TextStyle(
                          fontSize: 18,
                          fontWeight: FontWeight.bold,
                          color: AppTheme.textPrimary,
                        ),
                      ),
                      if (subtitle != null) ...[
                        const SizedBox(height: 4),
                        Text(
                          subtitle!,
                          style: const TextStyle(
                            fontSize: 14,
                            color: AppTheme.textSecondary,
                          ),
                        ),
                      ],
                    ],
                  ),
                ),
                if (onTap != null)
                  const Icon(
                    Icons.arrow_forward_ios,
                    size: 16,
                    color: AppTheme.textHint,
                  ),
              ],
            ),
            const SizedBox(height: 20),
            SizedBox(
              height: 200,
              child: chart,
            ),
          ],
        ),
      ),
    );
  }
}

class MembershipChart extends StatelessWidget {
  const MembershipChart({super.key});

  @override
  Widget build(BuildContext context) {
    return LineChart(
      LineChartData(
        gridData: FlGridData(
          show: true,
          drawVerticalLine: false,
          horizontalInterval: 200,
          getDrawingHorizontalLine: (value) {
            return FlLine(
              color: AppTheme.borderColor.withOpacity(0.5),
              strokeWidth: 1,
            );
          },
        ),
        titlesData: FlTitlesData(
          show: true,
          rightTitles: const AxisTitles(
            sideTitles: SideTitles(showTitles: false),
          ),
          topTitles: const AxisTitles(
            sideTitles: SideTitles(showTitles: false),
          ),
          leftTitles: AxisTitles(
            sideTitles: SideTitles(
              showTitles: true,
              interval: 200,
              getTitlesWidget: (value, meta) {
                return Text(
                  value.toInt().toString(),
                  style: const TextStyle(
                    color: AppTheme.textHint,
                    fontSize: 12,
                  ),
                );
              },
            ),
          ),
          bottomTitles: AxisTitles(
            sideTitles: SideTitles(
              showTitles: true,
              getTitlesWidget: (value, meta) {
                const months = ['Jan', 'Fév', 'Mar', 'Avr', 'Mai', 'Jun'];
                if (value.toInt() < months.length) {
                  return Text(
                    months[value.toInt()],
                    style: const TextStyle(
                      color: AppTheme.textHint,
                      fontSize: 12,
                    ),
                  );
                }
                return const Text('');
              },
            ),
          ),
        ),
        borderData: FlBorderData(show: false),
        minX: 0,
        maxX: 5,
        minY: 800,
        maxY: 1400,
        lineBarsData: [
          LineChartBarData(
            spots: const [
              FlSpot(0, 1000),
              FlSpot(1, 1050),
              FlSpot(2, 1100),
              FlSpot(3, 1180),
              FlSpot(4, 1220),
              FlSpot(5, 1247),
            ],
            color: AppTheme.primaryColor,
            barWidth: 3,
            isStrokeCapRound: true,
            dotData: FlDotData(
              show: true,
              getDotPainter: (spot, percent, barData, index) {
                return FlDotCirclePainter(
                  radius: 4,
                  color: AppTheme.primaryColor,
                  strokeWidth: 2,
                  strokeColor: Colors.white,
                );
              },
            ),
            belowBarData: BarAreaData(
              show: true,
              gradient: LinearGradient(
                colors: [
                  AppTheme.primaryColor.withOpacity(0.3),
                  AppTheme.primaryColor.withOpacity(0.1),
                  AppTheme.primaryColor.withOpacity(0.0),
                ],
                begin: Alignment.topCenter,
                end: Alignment.bottomCenter,
              ),
            ),
          ),
        ],
      ),
    );
  }
}

class CategoryChart extends StatelessWidget {
  const CategoryChart({super.key});

  @override
  Widget build(BuildContext context) {
    return PieChart(
      PieChartData(
        sectionsSpace: 4,
        centerSpaceRadius: 50,
        sections: [
          PieChartSectionData(
            color: AppTheme.primaryColor,
            value: 45,
            title: 'Actifs\n45%',
            radius: 60,
            titleStyle: const TextStyle(
              fontSize: 12,
              fontWeight: FontWeight.bold,
              color: Colors.white,
            ),
          ),
          PieChartSectionData(
            color: AppTheme.secondaryColor,
            value: 30,
            title: 'Retraités\n30%',
            radius: 60,
            titleStyle: const TextStyle(
              fontSize: 12,
              fontWeight: FontWeight.bold,
              color: Colors.white,
            ),
          ),
          PieChartSectionData(
            color: AppTheme.accentColor,
            value: 25,
            title: 'Étudiants\n25%',
            radius: 60,
            titleStyle: const TextStyle(
              fontSize: 12,
              fontWeight: FontWeight.bold,
              color: Colors.white,
            ),
          ),
        ],
      ),
    );
  }
}

class RevenueChart extends StatelessWidget {
  const RevenueChart({super.key});

  @override
  Widget build(BuildContext context) {
    return BarChart(
      BarChartData(
        alignment: BarChartAlignment.spaceAround,
        maxY: 15000,
        barTouchData: BarTouchData(enabled: false),
        titlesData: FlTitlesData(
          show: true,
          rightTitles: const AxisTitles(
            sideTitles: SideTitles(showTitles: false),
          ),
          topTitles: const AxisTitles(
            sideTitles: SideTitles(showTitles: false),
          ),
          leftTitles: AxisTitles(
            sideTitles: SideTitles(
              showTitles: true,
              interval: 5000,
              getTitlesWidget: (value, meta) {
                return Text(
                  '${(value / 1000).toInt()}k€',
                  style: const TextStyle(
                    color: AppTheme.textHint,
                    fontSize: 12,
                  ),
                );
              },
            ),
          ),
          bottomTitles: AxisTitles(
            sideTitles: SideTitles(
              showTitles: true,
              getTitlesWidget: (value, meta) {
                const months = ['J', 'F', 'M', 'A', 'M', 'J'];
                if (value.toInt() < months.length) {
                  return Text(
                    months[value.toInt()],
                    style: const TextStyle(
                      color: AppTheme.textHint,
                      fontSize: 12,
                    ),
                  );
                }
                return const Text('');
              },
            ),
          ),
        ),
        borderData: FlBorderData(show: false),
        gridData: FlGridData(
          show: true,
          drawVerticalLine: false,
          horizontalInterval: 5000,
          getDrawingHorizontalLine: (value) {
            return FlLine(
              color: AppTheme.borderColor.withOpacity(0.5),
              strokeWidth: 1,
            );
          },
        ),
        barGroups: [
          _buildBarGroup(0, 8000, AppTheme.primaryColor),
          _buildBarGroup(1, 9500, AppTheme.primaryColor),
          _buildBarGroup(2, 7800, AppTheme.primaryColor),
          _buildBarGroup(3, 11200, AppTheme.primaryColor),
          _buildBarGroup(4, 13500, AppTheme.primaryColor),
          _buildBarGroup(5, 12800, AppTheme.primaryColor),
        ],
      ),
    );
  }

  BarChartGroupData _buildBarGroup(int x, double y, Color color) {
    return BarChartGroupData(
      x: x,
      barRods: [
        BarChartRodData(
          toY: y,
          color: color,
          width: 16,
          borderRadius: const BorderRadius.only(
            topLeft: Radius.circular(4),
            topRight: Radius.circular(4),
          ),
        ),
      ],
    );
  }
}