import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';
import '../../../services/entitlements/entitlement_providers.dart';
import '../../../services/entitlements/feature_access_service.dart';
import '../../rides/ride_state_machine.dart';

/// Small inline badge indicating a Pro-only feature.
/// Follows MotorSignal cockpit aesthetic (dark surface, subtle cyan accent, no neon glow).
class ProBadge extends StatelessWidget {
  final double fontSize;
  final EdgeInsetsGeometry padding;

  const ProBadge({
    super.key,
    this.fontSize = 9,
    this.padding = const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
  });

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: padding,
      decoration: BoxDecoration(
        color: const Color(0xFF00E5FF).withValues(alpha: 0.15),
        borderRadius: BorderRadius.circular(4),
        border: Border.all(
          color: const Color(0xFF00E5FF).withValues(alpha: 0.6),
          width: 0.8,
        ),
      ),
      child: Text(
        'PRO',
        style: TextStyle(
          fontFamily: 'Inter',
          fontSize: fontSize,
          fontWeight: FontWeight.w900,
          color: const Color(0xFF00E5FF),
          letterSpacing: 0.8,
        ),
      ),
    );
  }
}

/// Metadata description helper for MotorSignal features.
class FeatureBenefitInfo {
  final String title;
  final String description;
  final IconData icon;

  const FeatureBenefitInfo({
    required this.title,
    required this.description,
    required this.icon,
  });

  static FeatureBenefitInfo forFeature(MotorSignalFeature feature) {
    switch (feature) {
      case MotorSignalFeature.cloudBackup:
      case MotorSignalFeature.unlimitedCloudHistory:
        return const FeatureBenefitInfo(
          title: 'Unlimited MotorCloud Sync',
          description:
              'Automatically preserve your entire ride catalog, telemetry, and motorcycle configurations to MotorCloud.',
          icon: Icons.cloud_done_outlined,
        );
      case MotorSignalFeature.multiDeviceRestore:
        return const FeatureBenefitInfo(
          title: 'Multi-Device Cloud Restore',
          description:
              'Seamlessly sync your complete ride records and garage to new phones or secondary devices.',
          icon: Icons.devices_outlined,
        );
      case MotorSignalFeature.advancedTelemetry:
      case MotorSignalFeature.advancedAnalytics:
        return const FeatureBenefitInfo(
          title: 'Advanced Telemetry & Analytics',
          description:
              'Deep sensor analysis including 20Hz telemetry graphs, elevation profiles, and cornering metrics.',
          icon: Icons.show_chart,
        );
      case MotorSignalFeature.advancedAcceleration:
        return const FeatureBenefitInfo(
          title: 'Advanced Acceleration Analysis',
          description:
              'Analyze longitudinal acceleration forces, sprint splits, and throttle roll-on dynamics.',
          icon: Icons.speed,
        );
      case MotorSignalFeature.advancedBraking:
        return const FeatureBenefitInfo(
          title: 'Advanced Braking Analysis',
          description:
              'Detailed braking G-force thresholds, trail-braking telemetry, and stopping deceleration.',
          icon: Icons.disc_full_outlined,
        );
      case MotorSignalFeature.advancedLean:
        return const FeatureBenefitInfo(
          title: 'Advanced Lean Angle Analysis',
          description:
              'Comprehensive left/right apex lean angle distribution, transition rate, and corner stability.',
          icon: Icons.screen_rotation,
        );
      case MotorSignalFeature.unlimitedHistory:
        return const FeatureBenefitInfo(
          title: 'Unlimited Ride History',
          description:
              'Keep a permanent, searchable ledger of every ride you record without duration caps.',
          icon: Icons.history,
        );
      case MotorSignalFeature.csvExport:
      case MotorSignalFeature.pdfExport:
        return const FeatureBenefitInfo(
          title: 'Forensic CSV & PDF Export',
          description:
              'Export sub-second 20Hz forensic data tables and printable performance reports.',
          icon: Icons.table_chart_outlined,
        );
      case MotorSignalFeature.useMultipleMotorcycles:
        return const FeatureBenefitInfo(
          title: 'Multiple Motorcycle Garage',
          description:
              'Manage your full fleet with motorcycle-specific geometry, specs, and ride logs.',
          icon: Icons.two_wheeler,
        );
      case MotorSignalFeature.planTrips:
        return const FeatureBenefitInfo(
          title: 'Advanced Route & Trip Planning',
          description:
              'Plan multi-waypoint tours, fuel stops, and twisty scenic routing.',
          icon: Icons.alt_route,
        );
      case MotorSignalFeature.createGroupRides:
      case MotorSignalFeature.useAdvancedGroupRideFeatures:
        return const FeatureBenefitInfo(
          title: 'Advanced Group Riding',
          description:
              'Coordinate organized pack rides with real-time route progress and rendezvous points.',
          icon: Icons.group_work_outlined,
        );
    }
  }
}

/// Helper to trigger a contextual Pro upgrade sheet.
/// STRICT RIDER SAFETY GUARANTEE:
/// If the rider is currently riding (active ride recording or moving), this modal is SUPPRESSED
/// and replaced with an unobtrusive passive toast to prevent screen distraction.
Future<void> showProUpgradeSheet(
  BuildContext context,
  WidgetRef ref, {
  required MotorSignalFeature feature,
}) async {
  final session = ref.read(rideStateMachineProvider);
  final isRiding = session.state == RideState.riding;

  if (isRiding) {
    ScaffoldMessenger.of(context).showSnackBar(
      const SnackBar(
        content: Text('Pro feature locked. Upgrade available when stopped.'),
        duration: Duration(seconds: 2),
      ),
    );
    return;
  }

  final info = FeatureBenefitInfo.forFeature(feature);

  await showModalBottomSheet<void>(
    context: context,
    backgroundColor: const Color(0xFF0F0F0F),
    shape: const RoundedRectangleBorder(
      borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
    ),
    builder: (ctx) {
      return SafeArea(
        child: Padding(
          padding: const EdgeInsets.all(20.0),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              Row(
                children: [
                  Container(
                    padding: const EdgeInsets.all(10),
                    decoration: BoxDecoration(
                      color: const Color(0xFF00E5FF).withValues(alpha: 0.12),
                      borderRadius: BorderRadius.circular(10),
                    ),
                    child: Icon(
                      info.icon,
                      color: const Color(0xFF00E5FF),
                      size: 24,
                    ),
                  ),
                  const SizedBox(width: 14),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Row(
                          children: [
                            Flexible(
                              child: Text(
                                info.title,
                                style: const TextStyle(
                                  fontSize: 16,
                                  fontWeight: FontWeight.bold,
                                  color: Colors.white,
                                ),
                              ),
                            ),
                            const SizedBox(width: 8),
                            const ProBadge(),
                          ],
                        ),
                        const SizedBox(height: 2),
                        const Text(
                          'MotorSignal Pro Feature',
                          style: TextStyle(fontSize: 11, color: Colors.white54),
                        ),
                      ],
                    ),
                  ),
                ],
              ),
              const SizedBox(height: 16),
              Text(
                info.description,
                style: const TextStyle(
                  fontSize: 13,
                  color: Colors.white70,
                  height: 1.4,
                ),
              ),
              const SizedBox(height: 24),
              ElevatedButton(
                style: ElevatedButton.styleFrom(
                  backgroundColor: const Color(0xFF00E5FF),
                  foregroundColor: Colors.black,
                  padding: const EdgeInsets.symmetric(vertical: 14),
                  shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(8),
                  ),
                ),
                onPressed: () {
                  Navigator.of(ctx).pop();
                  context.push('/pro');
                },
                child: const Text(
                  'VIEW MOTORSIGNAL PRO',
                  style: TextStyle(
                    fontWeight: FontWeight.bold,
                    letterSpacing: 1.0,
                  ),
                ),
              ),
              const SizedBox(height: 10),
              TextButton(
                style: TextButton.styleFrom(foregroundColor: Colors.white60),
                onPressed: () => Navigator.of(ctx).pop(),
                child: const Text('NOT NOW'),
              ),
            ],
          ),
        ),
      );
    },
  );
}

/// Reusable inline locked feature row.
class ProLockedRow extends ConsumerWidget {
  final MotorSignalFeature feature;
  final Widget title;
  final Widget? subtitle;
  final Widget? leading;

  const ProLockedRow({
    super.key,
    required this.feature,
    required this.title,
    this.subtitle,
    this.leading,
  });

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final featureAccess = ref.watch(featureAccessProvider);
    final hasAccess = featureAccess.canAccess(feature);

    if (hasAccess) {
      return const SizedBox.shrink();
    }

    return InkWell(
      onTap: () => showProUpgradeSheet(context, ref, feature: feature),
      child: Padding(
        padding: const EdgeInsets.symmetric(vertical: 8.0, horizontal: 12.0),
        child: Row(
          children: [
            if (leading != null) ...[leading!, const SizedBox(width: 12)],
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Row(
                    children: [
                      Flexible(child: title),
                      const SizedBox(width: 6),
                      const ProBadge(),
                    ],
                  ),
                  if (subtitle != null) ...[
                    const SizedBox(height: 2),
                    subtitle!,
                  ],
                ],
              ),
            ),
            const Icon(Icons.lock_outline, size: 18, color: Colors.white38),
          ],
        ),
      ),
    );
  }
}