PilotVault/Fly App/lib/ui/fly/top/status_bar.dart

import 'package:flutter/material.dart';

import '../../../flight_model.dart';
import '../../../fly/flight_status.dart';
import '../../../fly/hud_features.dart';
import '../../../fly/state/alert_state.dart';
import '../../../fly/state/link_state.dart';
import '../../../fly/state/vision_state.dart';
import '../../../theme.dart';
import '../../pv_icons.dart';
import '../hud_kit.dart';

/// Row 1 of the flight HUD (plan P2): back · status chip · GPS · flight mode ·
/// vision · tip marquee · RC / HD (or Wi-Fi) signal · battery · "•••".
///
/// Every cluster listens to the one sub-model it draws, so a 10 Hz flight
/// controller tick repaints the GPS and mode text, not the whole bar.
class StatusBar extends StatelessWidget {
  const StatusBar({super.key, required this.model, this.onBack, this.onStatus, this.onMore});

  final FlightModel model;
  final VoidCallback? onBack;

  /// Tapping the status chip — the Aircraft Status sheet, from P3.
  final VoidCallback? onStatus;
  final VoidCallback? onMore;

  static const double height = 28;

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: height,
      child: Row(children: <Widget>[
        GlassPill(
          height: height,
          onTap: onBack,
          padding: const EdgeInsets.symmetric(horizontal: 6),
          child: const PVIcon('chevronLeft', size: 16, color: Glass.ink),
        ),
        const SizedBox(width: 6),
        _StatusChip(model: model, onTap: onStatus),
        const SizedBox(width: 6),
        _GpsCluster(model: model),
        const SizedBox(width: 6),
        _ModeText(model: model),
        Requires(
          HudFeatures.visionIndicator,
          child: Padding(padding: const EdgeInsets.only(left: 6), child: _VisionIcon(vision: model.vision)),
        ),
        const SizedBox(width: 8),
        Expanded(child: _TipMarquee(alerts: model.alerts)),
        const SizedBox(width: 8),
        _SimBadge(model: model),
        Requires(
          HudFeatures.masterSlaveBadge,
          whenDisconnected: false,
          child: _RoleBadge(links: model.links),
        ),
        _SignalCluster(links: model.links),
        const SizedBox(width: 6),
        _BatteryChip(model: model),
        const SizedBox(width: 6),
        GlassPill(
          key: const ValueKey<String>('settings-button'),
          height: height,
          onTap: onMore,
          padding: const EdgeInsets.symmetric(horizontal: 7),
          child: const PVIcon('more', size: 16, color: Glass.ink),
        ),
      ]),
    );
  }
}

class _StatusChip extends StatelessWidget {
  const _StatusChip({required this.model, this.onTap});

  final FlightModel model;
  final VoidCallback? onTap;

  @override
  Widget build(BuildContext context) {
    return ListenableBuilder(
      listenable: Listenable.merge(<Listenable>[model.aircraft, model.alerts]),
      builder: (BuildContext context, _) {
        final FlightStatus s = FlightStatus.of(connected: model.connected, a: model.aircraft, alerts: model.alerts);
        return GlassPill(
          height: StatusBar.height,
          color: HudColors.forLevel(s.level),
          onTap: onTap,
          padding: const EdgeInsets.symmetric(horizontal: 10),
          // Capped, so a long status can never push the bar into overflow.
          child: ConstrainedBox(
            constraints: const BoxConstraints(maxWidth: 170),
            child: Text(s.text,
                maxLines: 1,
                softWrap: false,
                overflow: TextOverflow.ellipsis,
                style: HudText.sans.copyWith(color: Colors.white, fontWeight: FontWeight.w700)),
          ),
        );
      },
    );
  }
}

class _GpsCluster extends StatelessWidget {
  const _GpsCluster({required this.model});

  final FlightModel model;

  @override
  Widget build(BuildContext context) {
    return GlassPill(
      height: StatusBar.height,
      child: Row(mainAxisSize: MainAxisSize.min, children: <Widget>[
        const PVIcon('satellite', size: 14, color: Glass.ink),
        const SizedBox(width: 4),
        ListenableBuilder(
          listenable: model.aircraft,
          builder: (BuildContext context, _) => Row(mainAxisSize: MainAxisSize.min, children: <Widget>[
            SignalBars(level: model.aircraft.gpsSignalLevel ?? 0),
            const SizedBox(width: 4),
            Text('${model.aircraft.satellites ?? 0}', style: HudText.mono),
          ]),
        ),
      ]),
    );
  }
}

class _ModeText extends StatelessWidget {
  const _ModeText({required this.model});

  final FlightModel model;

  @override
  Widget build(BuildContext context) {
    return ListenableBuilder(
      listenable: model.aircraft,
      builder: (BuildContext context, _) {
        final String? mode = model.aircraft.flightMode;
        final String? orientation = switch (model.aircraft.orientationMode) {
          'COURSE_LOCK' => 'CL',
          'HOME_LOCK' => 'HL',
          _ => null,
        };
        return GlassPill(
          height: StatusBar.height,
          child: Text(
            <String>[if (mode != null && mode.isNotEmpty) mode else '—', if (orientation != null) orientation].join(' · '),
            style: HudText.mono.copyWith(fontWeight: FontWeight.w700),
          ),
        );
      },
    );
  }
}

class _VisionIcon extends StatelessWidget {
  const _VisionIcon({required this.vision});

  final VisionState vision;

  @override
  Widget build(BuildContext context) {
    return ListenableBuilder(
      listenable: vision,
      builder: (BuildContext context, _) {
        final Iterable<VisionReading> r = vision.sensors.values;
        final Color c = r.any((VisionReading s) => s.dangerous)
            ? HudColors.danger
            : r.any((VisionReading s) => s.isSensorBeingUsed)
                ? Glass.sat
                : HudColors.off;
        return GlassPill(height: StatusBar.height, child: PVIcon('obstacle', size: 14, color: c));
      },
    );
  }
}

class _TipMarquee extends StatelessWidget {
  const _TipMarquee({required this.alerts});

  final AlertState alerts;

  @override
  Widget build(BuildContext context) {
    return ListenableBuilder(
      listenable: alerts,
      builder: (BuildContext context, _) {
        final DiagnosticAlert? top = alerts.top;
        if (top == null) return const SizedBox.shrink();
        final Color c = switch (top.severity) {
          AlertSeverity.critical => HudColors.danger,
          AlertSeverity.warning => HudColors.caution,
          AlertSeverity.info => Glass.ink,
        };
        final int more = alerts.all.length - 1;
        return GlassPill(
          height: StatusBar.height,
          child: Row(children: <Widget>[
            Container(width: 6, height: 6, decoration: BoxDecoration(color: c, shape: BoxShape.circle)),
            const SizedBox(width: 6),
            Expanded(child: Marquee(text: top.reason, style: HudText.sans.copyWith(color: c))),
            if (more > 0) Padding(padding: const EdgeInsets.only(left: 6), child: Text('+$more', style: HudText.monoSmall)),
          ]),
        );
      },
    );
  }
}

class _SimBadge extends StatelessWidget {
  const _SimBadge({required this.model});

  final FlightModel model;

  @override
  Widget build(BuildContext context) {
    return ListenableBuilder(
      listenable: model.aircraft,
      builder: (BuildContext context, _) => model.aircraft.simulatorActive == true
          ? Padding(
              padding: const EdgeInsets.only(right: 6),
              child: GlassPill(
                height: StatusBar.height,
                color: const Color(0xCC7A4DD8),
                child: Text('SIM', style: HudText.mono.copyWith(fontWeight: FontWeight.w700)),
              ),
            )
          : const SizedBox.shrink(),
    );
  }
}

class _RoleBadge extends StatelessWidget {
  const _RoleBadge({required this.links});

  final LinkState links;

  @override
  Widget build(BuildContext context) {
    return ListenableBuilder(
      listenable: links,
      builder: (BuildContext context, _) {
        final String? role = links.rcRoleBadge;
        if (role == null) return const SizedBox.shrink();
        return Padding(
          padding: const EdgeInsets.only(right: 6),
          child: GlassPill(
            height: StatusBar.height,
            color: links.masterSlaveConnected == false ? HudColors.caution : Glass.accent,
            child: Text(role, style: HudText.mono.copyWith(fontWeight: FontWeight.w700, color: Colors.white)),
          ),
        );
      },
    );
  }
}

/// RC + HD bars on Lightbridge / OcuSync products, one Wi-Fi cluster on Wi-Fi ones.
class _SignalCluster extends StatelessWidget {
  const _SignalCluster({required this.links});

  final LinkState links;

  @override
  Widget build(BuildContext context) {
    final Widget rcHd = GlassPill(
      height: StatusBar.height,
      child: ListenableBuilder(
        listenable: links,
        builder: (BuildContext context, _) => Row(mainAxisSize: MainAxisSize.min, children: <Widget>[
          const Text('RC', style: HudText.label),
          const SizedBox(width: 3),
          SignalBars(level: LinkState.bars(links.uplinkQuality)),
          const SizedBox(width: 8),
          const Text('HD', style: HudText.label),
          const SizedBox(width: 3),
          SignalBars(level: LinkState.bars(links.downlinkQuality)),
        ]),
      ),
    );
    final Widget wifi = GlassPill(
      height: StatusBar.height,
      child: ListenableBuilder(
        listenable: links,
        builder: (BuildContext context, _) => Row(mainAxisSize: MainAxisSize.min, children: <Widget>[
          const Text('WI-FI', style: HudText.label),
          const SizedBox(width: 3),
          // A Wi-Fi link is only as good as its weaker direction.
          SignalBars(level: LinkState.bars(_min(links.uplinkQuality, links.downlinkQuality))),
        ]),
      ),
    );
    return Requires(
      HudFeatures.wifiSignal,
      whenDisconnected: false,
      fallback: rcHd,
      child: wifi,
    );
  }

  static int? _min(int? a, int? b) => a == null ? b : (b == null ? a : (a < b ? a : b));
}

class _BatteryChip extends StatelessWidget {
  const _BatteryChip({required this.model});

  final FlightModel model;

  @override
  Widget build(BuildContext context) {
    return GlassPill(
      height: StatusBar.height,
      child: Row(mainAxisSize: MainAxisSize.min, children: <Widget>[
        const PVIcon('battery', size: 16, color: Glass.ink),
        const SizedBox(width: 4),
        ListenableBuilder(
          listenable: model.battery,
          builder: (BuildContext context, _) {
            final int? p = model.battery.percent;
            final double? v = model.battery.voltage;
            final int low = model.battery.lowWarningThreshold ?? 30;
            final int critical = model.battery.seriousLowWarningThreshold ?? 15;
            final Color c = p == null
                ? Glass.ink
                : p <= critical
                    ? HudColors.danger
                    : p <= low
                        ? HudColors.caution
                        : Glass.sat;
            return Row(mainAxisSize: MainAxisSize.min, children: <Widget>[
              Text(p == null ? '—' : '$p%', style: HudText.mono.copyWith(color: c, fontWeight: FontWeight.w700)),
              if (v != null) ...<Widget>[
                const SizedBox(width: 5),
                Text('${v.toStringAsFixed(1)}V', style: HudText.monoSmall.copyWith(color: HudText.dim)),
              ],
            ]);
          },
        ),
      ]),
    );
  }
}