PilotVault/Fly App/lib/ui/fly/panels/settings/setting_tiles.dart

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

import '../../../../dji_service.dart';
import '../../../../fly/settings/settings_spec.dart';
import '../../../../fly/state/key_state.dart';
import '../../../../theme.dart';
import '../../dialogs/slide_to_confirm.dart';
import '../../hud_kit.dart';
import '../camera_menu/camera_rows.dart';
import '../camera_write.dart';

/// Writes one KeyManager setting the way every camera / gimbal row does: show
/// it at once, send, roll back with [onError] if the aircraft refuses.
Future<void> writeKeySetting(
  KeyState keys,
  DjiService dji,
  DjiKey key,
  Object value, {
  required String label,
  required void Function(String label, Object error) onError,
}) =>
    writeCameraSetting(
      keys,
      label: label,
      pending: <String, Object?>{key.id: value},
      send: () => dji.setKey(key, value),
      onError: onError,
    );

/// Renders one [SettingSpec] with the shared row kit. [custom] draws the
/// sheet's own rows ([CustomSpec]).
class SettingRowTile extends StatelessWidget {
  const SettingRowTile({
    super.key,
    required this.spec,
    required this.settings,
    required this.dji,
    required this.onError,
    required this.custom,
  });

  final SettingSpec spec;
  final SettingsContext settings;
  final DjiService dji;
  final void Function(String label, Object error) onError;
  final Widget Function(CustomSpec spec) custom;

  KeyState get _keys => settings.keys;

  Future<void> _write(DjiKey key, Object value) =>
      writeKeySetting(_keys, dji, key, value, label: spec.label, onError: onError);

  @override
  Widget build(BuildContext context) {
    final String? locked = spec.lockedReason(settings);
    final SettingSpec s = spec;
    final Widget tile = switch (s) {
      GroupSpec() => Padding(
          padding: const EdgeInsets.fromLTRB(16, 14, 16, 4),
          child: Text(s.label, style: HudText.label),
        ),
      KeySwitchSpec() => SwitchTile(
          key: ValueKey<String>('row-${s.id}'),
          label: s.label,
          hint: locked ?? s.hint,
          value: s.current(_keys),
          pending: _keys.pendingFor(s.key),
          onChanged: (bool on) => _write(s.key, on),
        ),
      KeyChoiceSpec() => ChoiceTile(
          key: ValueKey<String>('row-${s.id}'),
          label: s.label,
          hint: locked ?? s.hint,
          options: s.optionsFor(_keys),
          selected: s.current(_keys),
          pending: _keys.pendingFor(s.key),
          onSelect: (String v) => _write(s.key, v),
        ),
      KeyNumberSpec() => _NumberTile(spec: s, keys: _keys, locked: locked, onSet: (int v) => _write(s.key, v)),
      KeyReadoutSpec() => ValueTile(key: ValueKey<String>('row-${s.id}'), label: s.label, hint: s.hint, value: s.shown(_keys)),
      KeyTextSpec() => ValueTile(
          key: ValueKey<String>('row-${s.id}'),
          label: s.label,
          hint: locked ?? s.hint,
          value: s.shown(_keys),
          onTap: locked == null ? () => _editText(context, s) : null,
        ),
      KeyActionSpec() => ButtonTile(
          key: ValueKey<String>('row-${s.id}'),
          id: s.id,
          label: s.label,
          hint: locked ?? s.hint,
          button: s.button,
          onTap: locked == null ? () => _runAction(context, s) : null,
        ),
      CustomSpec() => custom(s),
    };
    // Steppers and buttons grey their own controls; the rest take no input.
    if (locked != null && (s is KeySwitchSpec || s is KeyChoiceSpec)) {
      return IgnorePointer(child: Opacity(opacity: 0.5, child: tile));
    }
    return tile;
  }

  Future<void> _editText(BuildContext context, KeyTextSpec t) async {
    final String? typed = await showDialog<String>(
      context: context,
      builder: (BuildContext ctx) => TextSettingDialog(
        label: t.label,
        initial: t.secret ? '' : (t.current(_keys) ?? ''),
        secret: t.secret,
        maxLength: t.maxLength,
      ),
    );
    if (typed == null || typed == t.current(_keys)) return;
    if (t.send != null) {
      try {
        await t.send!(dji, typed);
      } catch (e) {
        onError(t.label, e);
      }
      return;
    }
    await _write(t.key, typed);
  }

  Future<void> _runAction(BuildContext context, KeyActionSpec a) async {
    if (a.confirmTitle != null) {
      final SlideResult? ok = await showSlideToConfirm(
        context,
        SlideConfirmSpec(icon: 'link', title: a.confirmTitle!, description: a.confirmText ?? '', sliderLabel: 'Slide to confirm'),
      );
      if (ok == null) return;
    }
    try {
      await dji.performKeyAction(a.key);
    } catch (e) {
      onError(a.label, e);
    }
  }
}

class _NumberTile extends StatelessWidget {
  const _NumberTile({required this.spec, required this.keys, required this.locked, required this.onSet});

  final KeyNumberSpec spec;
  final KeyState keys;
  final String? locked;
  final ValueChanged<int> onSet;

  String _shown(int? v) => v == null ? '—' : '$v${spec.unit.isEmpty ? '' : ' ${spec.unit}'}';

  @override
  Widget build(BuildContext context) {
    final int? v = spec.current(keys);
    final int? down = spec.stepped(keys, -1), up = spec.stepped(keys, 1);
    final String? hint = locked ?? spec.hint ?? (spec.feet && v != null ? feetHint(v) : null);
    return StepperTile(
      key: ValueKey<String>('row-${spec.id}'),
      id: spec.id,
      label: spec.label,
      hint: hint,
      shown: _shown(v),
      pending: keys.pendingFor(spec.key),
      canDown: locked == null && down != null,
      canUp: locked == null && up != null,
      onStep: (int dir) {
        final int? next = dir > 0 ? up : down;
        if (next != null) onSet(next);
      },
      onValueTap: locked == null && v != null ? () => _type(context, v) : null,
    );
  }

  /// Types a value — distance limits run to thousands of metres.
  Future<void> _type(BuildContext context, int current) async {
    final (int lo, int hi) = spec.range(keys);
    final int? picked = await showDialog<int>(
      context: context,
      builder: (BuildContext ctx) => _NumberDialog(label: spec.label, unit: spec.unit, initial: current, min: lo, max: hi),
    );
    if (picked != null && picked != current) onSet(picked);
  }
}

class _NumberDialog extends StatefulWidget {
  const _NumberDialog({required this.label, required this.unit, required this.initial, required this.min, required this.max});

  final String label;
  final String unit;
  final int initial;
  final int min;
  final int max;

  @override
  State<_NumberDialog> createState() => _NumberDialogState();
}

class _NumberDialogState extends State<_NumberDialog> {
  late final TextEditingController _text = TextEditingController(text: '${widget.initial}');

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

  void _submit() {
    final int? n = int.tryParse(_text.text.trim());
    Navigator.of(context).pop(n?.clamp(widget.min, widget.max));
  }

  @override
  Widget build(BuildContext context) {
    final String unit = widget.unit.isEmpty ? '' : ' ${widget.unit}';
    return AlertDialog(
      backgroundColor: const Color(0xFF10203F),
      title: Text(widget.label, style: HudText.sans.copyWith(fontSize: 15)),
      content: TextField(
        key: const ValueKey<String>('number-input'),
        controller: _text,
        autofocus: true,
        keyboardType: TextInputType.number,
        inputFormatters: <TextInputFormatter>[FilteringTextInputFormatter.digitsOnly],
        style: HudText.value.copyWith(fontSize: 20),
        decoration: InputDecoration(
          suffixText: widget.unit,
          helperText: '${widget.min} – ${widget.max}$unit',
          helperStyle: HudText.label,
        ),
        onSubmitted: (_) => _submit(),
      ),
      actions: <Widget>[
        TextButton(onPressed: () => Navigator.of(context).pop(), child: const Text('Cancel')),
        FilledButton(key: const ValueKey<String>('number-set'), onPressed: _submit, child: const Text('Set')),
      ],
    );
  }
}

/// Types a string setting. The dialog's own State owns the controller (one
/// disposed right after `await showDialog` crashes the exit animation).
class TextSettingDialog extends StatefulWidget {
  const TextSettingDialog({super.key, required this.label, required this.initial, this.secret = false, this.maxLength = 32});

  final String label;
  final String initial;
  final bool secret;
  final int maxLength;

  @override
  State<TextSettingDialog> createState() => _TextSettingDialogState();
}

class _TextSettingDialogState extends State<TextSettingDialog> {
  late final TextEditingController _text = TextEditingController(text: widget.initial);
  bool _show = false;

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

  void _submit() {
    final String v = _text.text.trim();
    Navigator.of(context).pop(v.isEmpty ? null : v);
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      backgroundColor: const Color(0xFF10203F),
      title: Text(widget.label, style: HudText.sans.copyWith(fontSize: 15)),
      content: TextField(
        key: const ValueKey<String>('text-input'),
        controller: _text,
        autofocus: true,
        obscureText: widget.secret && !_show,
        maxLength: widget.maxLength,
        style: HudText.value.copyWith(fontSize: 16),
        decoration: InputDecoration(
          suffixIcon: widget.secret
              ? IconButton(
                  onPressed: () => setState(() => _show = !_show),
                  icon: Icon(_show ? Icons.visibility_off : Icons.visibility, size: 18),
                )
              : null,
        ),
        onSubmitted: (_) => _submit(),
      ),
      actions: <Widget>[
        TextButton(onPressed: () => Navigator.of(context).pop(), child: const Text('Cancel')),
        FilledButton(key: const ValueKey<String>('text-set'), onPressed: _submit, child: const Text('Set')),
      ],
    );
  }
}

/// GO 4's stick-mode picture: what each stick does in Mode 1 / 2 / 3.
class StickModeDiagram extends StatelessWidget {
  const StickModeDiagram({super.key, required this.mode});

  /// `STYLE_1` / `STYLE_2` / `STYLE_3`; anything else draws nothing.
  final String? mode;

  static const (String, String) _pitchRoll = ('Forward / back', 'Left / right');
  static const (String, String) _throttleYaw = ('Up / down', 'Turn');
  static const (String, String) _pitchYaw = ('Forward / back', 'Turn');
  static const (String, String) _throttleRoll = ('Up / down', 'Left / right');

  /// (left stick, right stick), each (vertical, horizontal).
  static ((String, String), (String, String))? layoutFor(String? mode) => switch (mode) {
        'STYLE_1' => (_pitchYaw, _throttleRoll),
        'STYLE_2' => (_throttleYaw, _pitchRoll),
        'STYLE_3' => (_pitchRoll, _throttleYaw),
        _ => null,
      };

  @override
  Widget build(BuildContext context) {
    final ((String, String), (String, String))? l = layoutFor(mode);
    if (l == null) return const SizedBox.shrink();
    return Padding(
      key: const ValueKey<String>('stick-diagram'),
      padding: const EdgeInsets.fromLTRB(16, 2, 16, 10),
      child: Row(children: <Widget>[
        Expanded(child: _Stick(title: 'LEFT STICK', axes: l.$1)),
        const SizedBox(width: 10),
        Expanded(child: _Stick(title: 'RIGHT STICK', axes: l.$2)),
      ]),
    );
  }
}

class _Stick extends StatelessWidget {
  const _Stick({required this.title, required this.axes});

  final String title;
  final (String, String) axes;

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.all(8),
      decoration: BoxDecoration(color: Glass.pill, borderRadius: BorderRadius.circular(8), border: Border.all(color: Glass.hairline)),
      child: Row(children: <Widget>[
        const CustomPaint(size: Size(30, 30), painter: _StickPainter()),
        const SizedBox(width: 8),
        Expanded(
          child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: <Widget>[
            Text(title, style: HudText.label),
            const SizedBox(height: 3),
            Text('Up-down: ${axes.$1}', style: HudText.sans.copyWith(fontSize: 10.5, fontWeight: FontWeight.w500)),
            const SizedBox(height: 2),
            Text('Sideways: ${axes.$2}', style: HudText.sans.copyWith(fontSize: 10.5, fontWeight: FontWeight.w500)),
          ]),
        ),
      ]),
    );
  }
}

class _StickPainter extends CustomPainter {
  const _StickPainter();

  @override
  void paint(Canvas canvas, Size size) {
    final Offset c = size.center(Offset.zero);
    final double r = size.shortestSide / 2;
    final Paint line = Paint()
      ..color = HudText.dim
      ..style = PaintingStyle.stroke
      ..strokeWidth = 1.2;
    canvas.drawCircle(c, r - 1, line);
    canvas.drawLine(c.translate(0, -r + 4), c.translate(0, r - 4), line);
    canvas.drawLine(c.translate(-r + 4, 0), c.translate(r - 4, 0), line);
    canvas.drawCircle(c, 4, Paint()..color = Glass.accent);
  }

  @override
  bool shouldRepaint(covariant CustomPainter oldDelegate) => false;
}