import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../../core/theme/app_colors.dart';
import '../../../core/theme/app_typography.dart';
import '../../rides/ride_state_machine.dart';
import '../../../models/recording_health_status.dart';

/// Authoritative ride status badge/chip.
///
/// Subscribes strictly to
/// [rideStateMachineProvider.select((s) => (s.state, s.healthStatus))] - the
/// narrowest selection that can render a truthful status claim. RideState decides
/// which lifecycle branch applies; the RID-3C-1 health status decides the claim.
/// Both fields change only on real lifecycle or health transitions, so this still
/// never rebuilds on 20 Hz telemetry ticks.
class RideStatusChip extends ConsumerWidget {
  const RideStatusChip({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    // RID-3C-2: RideState decides WHICH lifecycle branch applies; the RID-3C-1
    // health status decides the CLAIM inside an active ride. This widget performs
    // no health calculation of its own - recordingActive is already the product of
    // canReportRecording plus the frozen evidence thresholds, so RECORDING can
    // never be claimed from RideState or service presence alone.
    //
    // The select stays narrow (state + healthStatus only), so the chip still does
    // NOT rebuild on 20 Hz telemetry ticks. healthStatus changes only on real
    // warm-up / degradation / recovery / finalization transitions.
    final (state, health) = ref.watch(
      rideStateMachineProvider.select((s) => (s.state, s.healthStatus)),
    );

    final isActiveRide = state == RideState.riding;
    final isPaused = state == RideState.paused;
    // The glow/emphasis treatment belongs to a genuine healthy recording claim
    // only, never to a warm-up or degraded ride.
    final claimsRecording =
        isActiveRide && health == RecordingHealthStatus.recordingActive;

    final theme = Theme.of(context);
    final isDark = theme.brightness == Brightness.dark;

    final Color badgeColor;
    final String label;

    if (isActiveRide) {
      switch (health) {
        case RecordingHealthStatus.recordingActive:
          // Existing healthy/active treatment for this chip, preserved.
          badgeColor = AppColors.raceRed;
          label = 'RECORDING';
          break;
        case RecordingHealthStatus.recordingArmed:
        case RecordingHealthStatus.recordingStarting:
          // Ride exists but required evidence has not completed yet. Neutral /
          // informational; the Stop action remains available elsewhere.
          badgeColor = isDark ? AppColors.cyberCyan : AppColors.lightPrimary;
          label = 'WARMING UP';
          break;
        case RecordingHealthStatus.recordingFinalizing:
          // RID-3B-1 finalization has priority and is never shown as RECORDING.
          badgeColor = isDark ? AppColors.cyberCyan : AppColors.lightPrimary;
          label = 'FINALIZING';
          break;
        case RecordingHealthStatus.recordingDegraded:
        case RecordingHealthStatus.recordingFailed:
          // Warning, NOT danger: DEGRADED means the ride is still active and still
          // stoppable - not ended, discarded, failed or service-stopped.
          badgeColor = AppColors.warningAmber;
          label = 'DEGRADED';
          break;
        case RecordingHealthStatus.recordingComplete:
          // Unreachable alongside an active ride; must not present as recording.
          badgeColor = theme.colorScheme.onSurfaceVariant;
          label = 'STANDBY';
          break;
      }
    } else if (isPaused) {
      badgeColor = AppColors.warningAmber;
      label = 'PAUSED';
    } else if (state == RideState.ready) {
      badgeColor = isDark ? AppColors.cyberCyan : AppColors.lightPrimary;
      label = 'READY';
    } else {
      badgeColor = theme.colorScheme.onSurfaceVariant;
      label = 'STANDBY';
    }

    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 9, vertical: 4),
      decoration: BoxDecoration(
        color: badgeColor.withValues(alpha: claimsRecording ? 0.18 : 0.10),
        borderRadius: BorderRadius.circular(6),
        border: Border.all(
          color: badgeColor.withValues(alpha: claimsRecording ? 0.8 : 0.35),
          width: 1.0,
        ),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Container(
            width: 7,
            height: 7,
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              color: badgeColor,
              boxShadow: claimsRecording
                  ? [
                      BoxShadow(
                        color: badgeColor.withValues(alpha: 0.6),
                        blurRadius: 6,
                      ),
                    ]
                  : null,
            ),
          ),
          const SizedBox(width: 6),
          Text(
            label,
            style: TextStyle(
              fontFamily: AppTypography.fontTelemetry,
              fontSize: 10,
              fontWeight: FontWeight.w800,
              color: badgeColor,
              letterSpacing: 0.6,
            ),
          ),
        ],
      ),
    );
  }
}