PilotVault/Fly App/lib/ui/settings_menu_page.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

import '../dji_service.dart';
import '../flight_model.dart';
import '../theme.dart';
import 'pv_icons.dart';

/// Aircraft settings — mirrors the v2 "Settings" mockup. Left tab column
/// (Safety / Control / Camera / Transmission / About); Safety & Control rows
/// drive real flight-controller setters. Values are held on the model and
/// updated as the user changes them (sensible defaults until read back).
class SettingsMenuPage extends StatefulWidget {
  const SettingsMenuPage({super.key, required this.model, required this.dji});

  final FlightModel model;
  final DjiService dji;

  @override
  State<SettingsMenuPage> createState() => _SettingsMenuPageState();
}

class _SettingsMenuPageState extends State<SettingsMenuPage> {
  DjiService get _dji => widget.dji;
  FlightModel get _m => widget.model;

  int _tab = 0;
  static const List<(String, String)> _tabs = <(String, String)>[
    ('shield', 'Safety'),
    ('rc', 'Control'),
    ('aperture', 'Camera'),
    ('radio', 'Transmission'),
    ('drone', 'About'),
  ];

  @override
  void initState() {
    super.initState();
    // Seed defaults where nothing has been read back yet.
    _m.maxHeight ??= 120;
    _m.maxRadius ??= 500;
    _m.maxRadiusEnabled ??= false;
    _m.rthHeight ??= 100;
    _m.obstacleAvoidance ??= 'On';
    _m.noviceMode ??= false;
  }

  void _snack(String msg) {
    ScaffoldMessenger.of(context)
      ..clearSnackBars()
      ..showSnackBar(SnackBar(content: Text(msg)));
  }

  Future<void> _run(String label, Future<void> Function() action) async {
    try {
      await action();
    } catch (e) {
      _snack('$label: ${e is PlatformException ? (e.message ?? e.code) : e}');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: const Color(0xFF0A1120),
      body: SafeArea(
        child: AnimatedBuilder(
          animation: _m,
          builder: (BuildContext context, _) => Stack(children: <Widget>[
            Row(children: <Widget>[
              _tabColumn(),
              Expanded(child: _rightPanel()),
            ]),
            Positioned(
              top: 6, right: 8,
              child: GestureDetector(
                onTap: () => Navigator.of(context).maybePop(),
                child: Container(
                  width: 30, height: 30,
                  decoration: BoxDecoration(color: const Color(0x1FFFFFFF), borderRadius: BorderRadius.circular(9)),
                  alignment: Alignment.center,
                  child: const PVIcon('close', size: 17, color: Glass.ink),
                ),
              ),
            ),
          ]),
        ),
      ),
    );
  }

  Widget _tabColumn() {
    return Container(
      width: 160,
      padding: const EdgeInsets.fromLTRB(12, 18, 12, 12),
      color: const Color(0x8C081020),
      child: Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: <Widget>[
        Padding(
          padding: const EdgeInsets.only(left: 6, bottom: 10),
          child: Row(children: const <Widget>[
            PVIcon('settings', size: 18, color: Glass.ink),
            SizedBox(width: 8),
            Text('Settings', style: TextStyle(fontFamily: PV.fontSans, fontSize: 15, fontWeight: FontWeight.w700, color: Glass.ink)),
          ]),
        ),
        for (int i = 0; i < _tabs.length; i++) _tabBtn(i),
      ]),
    );
  }

  Widget _tabBtn(int i) {
    final bool active = i == _tab;
    return GestureDetector(
      onTap: () => setState(() => _tab = i),
      child: Container(
        height: 38,
        margin: const EdgeInsets.only(bottom: 6),
        padding: const EdgeInsets.symmetric(horizontal: 12),
        decoration: BoxDecoration(color: active ? Glass.accent : Colors.transparent, borderRadius: BorderRadius.circular(10)),
        child: Row(children: <Widget>[
          PVIcon(_tabs[i].$1, size: 17, stroke: 1.7, color: Glass.ink),
          const SizedBox(width: 10),
          Text(_tabs[i].$2, style: const TextStyle(fontFamily: PV.fontSans, fontSize: 13, fontWeight: FontWeight.w600, color: Glass.ink)),
        ]),
      ),
    );
  }

  Widget _rightPanel() {
    final (String eyebrow, List<Widget> rows) = switch (_tab) {
      0 => ('Flight Safety', _safetyRows()),
      1 => ('Flight Control', _controlRows()),
      2 => ('Camera', _cameraRows()),
      3 => ('Transmission', _infoRows(<(String, String)>[('Channel Mode', 'Auto'), ('Frequency', '2.4 / 5.8 GHz'), ('Signal', 'HD 1080p')])),
      _ => ('About', _infoRows(<(String, String)>[
            ('Model', _m.model ?? '—'),
            ('Serial Number', _m.serialNumber ?? '—'),
            ('Firmware', _m.firmwareVersion ?? '—'),
            ('Controller Firmware', _m.controllerFirmwareVersion ?? '—'),
            ('MSDK', _m.sdkVersion),
          ])),
    };
    return Padding(
      padding: const EdgeInsets.fromLTRB(22, 20, 22, 20),
      child: Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: <Widget>[
        Padding(
          padding: const EdgeInsets.only(bottom: 12),
          child: Text(eyebrow.toUpperCase(),
              style: const TextStyle(fontFamily: PV.fontMono, fontSize: 10, letterSpacing: 1.4, color: Color(0x8CEAF0FA))),
        ),
        Expanded(child: ListView(children: rows)),
      ]),
    );
  }

  // ── Rows ────────────────────────────────────────────────────────────────
  List<Widget> _safetyRows() => <Widget>[
        _stepperRow('Max Altitude', '${_m.maxHeight} m', () => _editNumber('Max Altitude', _m.maxHeight ?? 120, 20, 500, 10, (int v) {
              setState(() => _m.maxHeight = v);
              _run('Max altitude', () => _dji.setMaxFlightHeight(v));
            })),
        _toggleRow('Max Distance', _m.maxRadiusEnabled ?? false, (bool on) {
          setState(() => _m.maxRadiusEnabled = on);
          _run('Max distance', () => _dji.setMaxRadiusEnabled(on));
        }),
        _stepperRow('Return-to-Home Alt.', '${_m.rthHeight} m', () => _editNumber('RTH Altitude', _m.rthHeight ?? 100, 20, 500, 10, (int v) {
              setState(() => _m.rthHeight = v);
              _run('RTH altitude', () => _dji.setGoHomeHeight(v));
            })),
        _cycleRow('Obstacle Avoidance', _m.obstacleAvoidance ?? 'On', <String>['On', 'Off'], (String v) {
          setState(() => _m.obstacleAvoidance = v);
          _run('Obstacle avoidance', () => _dji.setObstacleAvoidance(v == 'On'));
        }),
        _toggleRow('Beginner Mode', _m.noviceMode ?? false, (bool on) {
          setState(() => _m.noviceMode = on);
          _run('Beginner mode', () => _dji.setNoviceMode(on));
        }),
        _toggleRow('AR Home Point', _m.arHomePoint, (bool on) => setState(() => _m.arHomePoint = on)),
      ];

  List<Widget> _controlRows() => <Widget>[
        _stepperRow('Max Distance', '${_m.maxRadius} m', () => _editNumber('Max Distance', _m.maxRadius ?? 500, 50, 5000, 50, (int v) {
              setState(() => _m.maxRadius = v);
              _run('Max distance', () => _dji.setMaxFlightRadius(v));
            })),
        _infoRow('Set Home to Current', 'Tap', onTap: () => _run('Set home', _dji.setHomeToCurrent)),
        _infoRow('Cancel Return-to-Home', 'Tap', onTap: () => _run('Cancel RTH', _dji.cancelGoHome)),
      ];

  List<Widget> _cameraRows() => <Widget>[
        _infoRow('Exposure', _m.exposureProgram == ExposureProgram.pro ? 'Pro' : 'Auto'),
        _infoRow('ISO', _m.iso ?? '—'),
        _infoRow('Shutter', _m.shutter ?? '—'),
        _infoRow('White Balance', _m.whiteBalance ?? 'Auto'),
      ];

  List<Widget> _infoRows(List<(String, String)> items) =>
      <Widget>[for (final (String l, String v) in items) _infoRow(l, v)];

  Widget _rowShell({required Widget child}) => Container(
        height: 44,
        decoration: const BoxDecoration(border: Border(bottom: BorderSide(color: Color(0x12FFFFFF)))),
        child: child,
      );

  Widget _label(String l) => Text(l, style: const TextStyle(fontFamily: PV.fontSans, fontSize: 13.5, color: Glass.ink));

  Widget _stepperRow(String label, String value, VoidCallback onTap) => _rowShell(
        child: InkWell(
          onTap: onTap,
          child: Row(children: <Widget>[
            Expanded(child: _label(label)),
            Text(value, style: const TextStyle(fontFamily: PV.fontMono, fontSize: 13, fontWeight: FontWeight.w700, color: Color(0xFF8FB4F6))),
            const SizedBox(width: 4),
            const PVIcon('chevronRight', size: 15, color: Color(0xFF8FB4F6)),
          ]),
        ),
      );

  Widget _infoRow(String label, String value, {VoidCallback? onTap}) => _rowShell(
        child: InkWell(
          onTap: onTap,
          child: Row(children: <Widget>[
            Expanded(child: _label(label)),
            Text(value, style: TextStyle(fontFamily: PV.fontMono, fontSize: 13, color: onTap == null ? const Color(0x99EAF0FA) : const Color(0xFF8FB4F6))),
          ]),
        ),
      );

  Widget _cycleRow(String label, String value, List<String> options, ValueChanged<String> onChanged) => _rowShell(
        child: InkWell(
          onTap: () {
            final int i = (options.indexOf(value) + 1) % options.length;
            onChanged(options[i]);
          },
          child: Row(children: <Widget>[
            Expanded(child: _label(label)),
            Text(value, style: const TextStyle(fontFamily: PV.fontMono, fontSize: 13, fontWeight: FontWeight.w700, color: Color(0xFF8FB4F6))),
            const SizedBox(width: 4),
            const PVIcon('chevronRight', size: 15, color: Color(0xFF8FB4F6)),
          ]),
        ),
      );

  Widget _toggleRow(String label, bool value, ValueChanged<bool> onChanged) => _rowShell(
        child: Row(children: <Widget>[
          Expanded(child: _label(label)),
          GestureDetector(
            onTap: () => onChanged(!value),
            child: Container(
              width: 40, height: 22,
              padding: const EdgeInsets.all(2),
              decoration: BoxDecoration(color: value ? const Color(0xFF3D7BF0) : const Color(0x26FFFFFF), borderRadius: BorderRadius.circular(999)),
              alignment: value ? Alignment.centerRight : Alignment.centerLeft,
              child: Container(width: 18, height: 18, decoration: const BoxDecoration(color: Colors.white, shape: BoxShape.circle)),
            ),
          ),
        ]),
      );

  Future<void> _editNumber(String title, int initial, int min, int max, int step, ValueChanged<int> onSet) async {
    int value = initial;
    await showDialog<void>(
      context: context,
      builder: (BuildContext ctx) => StatefulBuilder(
        builder: (BuildContext ctx, StateSetter set) => AlertDialog(
          backgroundColor: const Color(0xFF10203F),
          title: Text(title, style: const TextStyle(color: Glass.ink, fontFamily: PV.fontSans, fontWeight: FontWeight.w700)),
          content: Row(mainAxisAlignment: MainAxisAlignment.spaceBetween, children: <Widget>[
            IconButton(onPressed: () => set(() => value = (value - step).clamp(min, max)), icon: const Icon(Icons.remove, color: Glass.ink)),
            Text('$value m', style: const TextStyle(fontFamily: PV.fontMono, fontSize: 22, fontWeight: FontWeight.w700, color: Glass.ink)),
            IconButton(onPressed: () => set(() => value = (value + step).clamp(min, max)), icon: const Icon(Icons.add, color: Glass.ink)),
          ]),
          actions: <Widget>[
            TextButton(onPressed: () => Navigator.pop(ctx), child: const Text('Cancel')),
            FilledButton(onPressed: () {
              Navigator.pop(ctx);
              onSet(value);
            }, child: const Text('Set')),
          ],
        ),
      ),
    );
  }
}