import 'package:flutter/material.dart';
import '../../../models/energy_data.dart';
import '../../../theme/etm_tokens.dart';
import '../painters/ring_painter.dart';

class KpiRow extends StatelessWidget {
  final EnergyData data;
  const KpiRow({super.key, required this.data});

  @override
  Widget build(BuildContext context) {
    final autoconso = data.selfConsumptionRate.clamp(0.0, 100.0);
    final autonomy  = data.autonomyRate.clamp(0.0, 100.0);
    final toGrid    =  data.dayGridInjectionWh.clamp(0.0, double.infinity) / 1000;
    final fromGrid  = (-data.dayGridInjectionWh).clamp(0.0, double.infinity) / 1000;

    return Column(
      children: [
        Row(
          children: [
            Expanded(
              child: _RingTile(
                label: 'Autoconsommation',
                value: autoconso,
                color: EtmTokens.solarOf(context),
              ),
            ),
            const SizedBox(width: 10),
            Expanded(
              child: _RingTile(
                label: 'Autonomie',
                value: autonomy,
                color: EtmTokens.ecoOf(context),
              ),
            ),
          ],
        ),
        const SizedBox(height: 10),
        Row(
          children: [
            Expanded(
              child: _ValueTile(
                label: 'Vers réseau · aujourd\'hui',
                value: toGrid,
                icon: Icons.north_west_rounded,
                color: EtmTokens.ecoOf(context),
              ),
            ),
            const SizedBox(width: 10),
            Expanded(
              child: _ValueTile(
                label: 'Depuis réseau · aujourd\'hui',
                value: fromGrid,
                icon: Icons.south_east_rounded,
                color: EtmTokens.importColor,
              ),
            ),
          ],
        ),
      ],
    );
  }
}

// ── Ring tile — horizontal (ring left, text right) ────────────────────────────

class _RingTile extends StatefulWidget {
  final String label;
  final double value;
  final Color color;
  const _RingTile({required this.label, required this.value, required this.color});

  @override
  State<_RingTile> createState() => _RingTileState();
}

class _RingTileState extends State<_RingTile>
    with SingleTickerProviderStateMixin {
  late final AnimationController _ctrl;
  late Animation<double> _ring;
  late Animation<int>    _count;

  @override
  void initState() {
    super.initState();
    _ctrl  = AnimationController(vsync: this, duration: const Duration(milliseconds: 1100));
    _ring  = Tween<double>(begin: 0, end: widget.value / 100)
        .animate(CurvedAnimation(parent: _ctrl, curve: Curves.easeOutCubic));
    _count = IntTween(begin: 0, end: widget.value.round())
        .animate(CurvedAnimation(parent: _ctrl, curve: Curves.easeOutCubic));
    _ctrl.forward();
  }

  @override
  void dispose() {
    _ctrl.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Container(
      decoration: BoxDecoration(
        color: EtmTokens.surfaceOf(context),
        borderRadius: BorderRadius.circular(EtmTokens.radiusCard),
        boxShadow: EtmTokens.cardShadowOf(context),
        border: Border.all(color: EtmTokens.lineOf(context), width: 1),
      ),
      padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 13),
      child: Row(
        children: [
          // Ring — 50×50, strokeWidth 5 (matches HTML .ring SVG)
          SizedBox(
            width: 50, height: 50,
            child: AnimatedBuilder(
              animation: _ring,
              builder: (context, _) => CustomPaint(
                size: const Size(50, 50),
                painter: RingPainter(
                  value: _ring.value,
                  color: widget.color,
                  strokeWidth: 5,
                ),
              ),
            ),
          ),
          const SizedBox(width: 12),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                AnimatedBuilder(
                  animation: _count,
                  builder: (context, _) => Text(
                    '${_count.value} %',
                    style: EtmTokens.mono(
                      size: 18,
                      weight: FontWeight.w600,
                      color: EtmTokens.inkOf(context),
                    ),
                  ),
                ),
                const SizedBox(height: 3),
                Text(
                  widget.label,
                  style: EtmTokens.sans(
                    size: 11,
                    color: EtmTokens.mutedOf(context),
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}

// ── Value tile — horizontal (icon left, text right) ───────────────────────────

class _ValueTile extends StatelessWidget {
  final String label;
  final double value;
  final IconData icon;
  final Color color;

  const _ValueTile({
    required this.label,
    required this.value,
    required this.icon,
    required this.color,
  });

  @override
  Widget build(BuildContext context) {
    return Container(
      decoration: BoxDecoration(
        color: EtmTokens.surfaceOf(context),
        borderRadius: BorderRadius.circular(EtmTokens.radiusCard),
        boxShadow: EtmTokens.cardShadowOf(context),
        border: Border.all(color: EtmTokens.lineOf(context), width: 1),
      ),
      padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 13),
      child: Row(
        children: [
          Container(
            width: 30, height: 30,
            decoration: BoxDecoration(
              color: color.withValues(alpha: 0.12),
              borderRadius: BorderRadius.circular(9),
            ),
            child: Icon(icon, color: color, size: 16),
          ),
          const SizedBox(width: 12),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  '${value.toStringAsFixed(1)} kWh',
                  style: EtmTokens.mono(
                    size: 16,
                    weight: FontWeight.w600,
                    color: EtmTokens.inkOf(context),
                  ),
                ),
                const SizedBox(height: 3),
                Text(
                  label,
                  style: EtmTokens.sans(
                    size: 10.5,
                    color: EtmTokens.mutedOf(context),
                  ),
                  overflow: TextOverflow.ellipsis,
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}