part of 'operate_bar.dart';

class _ContrastToneBar extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => _ContrastToneBarState();
}

class _ContrastToneBarState extends State<_ContrastToneBar> {
  late final measureController = Get.find<MeasureController>();
  VidPlayerController playerController =
      Get.find<IPlayerController>() as VidPlayerController;

  ///屏幕缩放比例
  double get devicePixelRatio =>
      kIsMobile ? 1 : MediaQuery.of(context).devicePixelRatio;
  double curValue = 0;
  @override
  void initState() {
    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
      if (mounted) {
        playerController.eventHandler.addListener(onControllerEvent);
        measureController.imageLoaded.addListener(updatePlayerController);
      }
    });
    super.initState();
  }

  /// 更新 controller
  void updatePlayerController(a, b) {
    playerController.eventHandler.removeListener(onControllerEvent);
    playerController = Get.find<IPlayerController>() as VidPlayerController;
    playerController.eventHandler.addListener(onControllerEvent);
  }

  @override
  Widget build(BuildContext context) {
    return _ToneBar(
      max: 100,
      min: -100,
      value: curValue,
      icon: Icon(
        Icons.contrast,
        color: Colors.white,
        size: 24 / devicePixelRatio,
      ),
      onChange: (v) {
        playerController.setContrast(v.toInt());
      },
    );
  }

  @override
  void dispose() {
    playerController.eventHandler.removeListener(onControllerEvent);
    measureController.imageLoaded.removeListener(updatePlayerController);
    super.dispose();
  }

  void onControllerEvent(Object sender, VidPlayerEvent e) {
    if (e is VidPlayResetToneEvent) {
      onResetTone();
    }
  }

  void onResetTone() {
    setState(() {
      curValue = 0;
    });
  }
}

class _BrightnessToneBar extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => _BrightnessToneBarState();
}

class _BrightnessToneBarState extends State<_BrightnessToneBar> {
  late final measureController = Get.find<MeasureController>();
  VidPlayerController playerController =
      Get.find<IPlayerController>() as VidPlayerController;

  ///屏幕缩放比例
  double get devicePixelRatio =>
      kIsMobile ? 1 : MediaQuery.of(context).devicePixelRatio;
  double curValue = 0;
  @override
  void initState() {
    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
      if (mounted) {
        playerController.eventHandler.addListener(onControllerEvent);
        measureController.imageLoaded.addListener(updatePlayerController);
      }
    });
    super.initState();
  }

  /// 更新 controller
  void updatePlayerController(a, b) {
    playerController.eventHandler.removeListener(onControllerEvent);
    playerController = Get.find<IPlayerController>() as VidPlayerController;
    playerController.eventHandler.addListener(onControllerEvent);
  }

  @override
  Widget build(BuildContext context) {
    return _ToneBar(
      max: 100,
      min: -100,
      value: curValue,
      icon: Icon(
        Icons.wb_sunny_sharp,
        color: Colors.white,
        size: 24 / devicePixelRatio,
      ),
      onChange: (v) {
        playerController.setBrightness(v.toInt());
      },
    );
  }

  @override
  void dispose() {
    playerController.eventHandler.removeListener(onControllerEvent);
    measureController.imageLoaded.removeListener(updatePlayerController);
    super.dispose();
  }

  void onControllerEvent(Object sender, VidPlayerEvent e) {
    if (e is VidPlayResetToneEvent) {
      onResetTone();
    }
  }

  void onResetTone() {
    setState(() {
      curValue = 0;
    });
  }
}

class _ToneBar extends StatefulWidget {
  const _ToneBar({
    Key? key,
    required this.icon,
    required this.min,
    required this.max,
    required this.value,
    this.onChange,
  }) : super(key: key);

  final Widget icon;
  final ValueChanged<double>? onChange;
  final double min;
  final double max;
  final double value;
  final Color themeColor = Colors.white;

  @override
  State<StatefulWidget> createState() => _ToneBarState();
}

class _ToneBarState extends State<_ToneBar> {
  double get _kIconSize => 20.0 / devicePixelRatio;
  double get splashRadius => _kIconSize / 2 + 3;
  double get devicePixelRatio =>
      kIsMobile ? 1 : MediaQuery.of(context).devicePixelRatio;
  late double _value;

  @override
  void initState() {
    syncProps();
    super.initState();
  }

  @override
  void didUpdateWidget(covariant _ToneBar oldWidget) {
    syncProps();
    super.didUpdateWidget(oldWidget);
  }

  void syncProps() {
    _value = widget.value;
  }

  @override
  Widget build(BuildContext context) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        widget.icon,
        const SizedBox(width: 8),
        buildReduceIcon(),
        buildSlider(context),
        buildIncreaseIcon(),
        const SizedBox(width: 8),
        SizedBox(
            width: 30 / devicePixelRatio,
            child: Text(
              '${_value.toInt()}',
              style: TextStyle(color: widget.themeColor),
            )),
      ],
    );
  }

  Widget buildReduceIcon() {
    return IconButton(
      color: widget.themeColor,
      constraints: BoxConstraints(
        minHeight: _kIconSize,
        minWidth: _kIconSize,
      ),
      splashRadius: splashRadius,
      padding: EdgeInsets.zero,
      onPressed: () {
        updateValue(_value - 1);
      },
      icon: Icon(Icons.remove_circle_outline, size: _kIconSize),
    );
  }

  Widget buildIncreaseIcon() {
    return IconButton(
      color: widget.themeColor,
      constraints: BoxConstraints(
        minHeight: _kIconSize,
        minWidth: _kIconSize,
      ),
      splashRadius: splashRadius,
      padding: EdgeInsets.zero,
      onPressed: () {
        updateValue(_value + 1);
      },
      icon: Icon(Icons.add_circle_outline, size: _kIconSize),
    );
  }

  Widget buildSlider(BuildContext context) {
    final trackColor = Theme.of(context).primaryColor;
    return Expanded(
      child: SliderTheme(
        data: SliderThemeData(
          trackHeight: 4,
          activeTrackColor: trackColor,
          inactiveTrackColor: trackColor,
          thumbColor: Colors.grey[300],
          thumbShape: const RoundSliderThumbShape(
            enabledThumbRadius: 6,
            elevation: 3.0,
          ),
          overlayShape: SliderComponentShape.noOverlay,
          trackShape: _FullWidthRectangularSliderTrackShape(
            padding: const EdgeInsets.symmetric(horizontal: 4),
            devicePixelRatio: devicePixelRatio,
          ),
        ),
        child: Slider(
          max: widget.max,
          min: widget.min,
          value: _value,
          label: _value.toInt().toString(),
          divisions: (widget.max - widget.min).toInt(),
          onChanged: (v) {
            updateValue(v);
          },
        ),
      ),
    );
  }

  void updateValue(double value) {
    if (value < widget.min || value > widget.max) {
      return;
    }
    setState(() {
      _value = value;
    });
    widget.onChange?.call(value);
  }
}

class _FullWidthRectangularSliderTrackShape
    extends RectangularSliderTrackShape {
  const _FullWidthRectangularSliderTrackShape({
    this.padding,
    this.devicePixelRatio = 1,
  });

  final EdgeInsets? padding;

  final double devicePixelRatio;

  @override
  Rect getPreferredRect({
    required RenderBox parentBox,
    Offset offset = Offset.zero,
    required SliderThemeData sliderTheme,
    bool isEnabled = false,
    bool isDiscrete = false,
  }) {
    double trackHeight = sliderTheme.trackHeight ?? 2;
    double trackLeft = offset.dx;
    double trackTop = offset.dy + (parentBox.size.height - trackHeight) / 2;
    // 让轨道宽度等于 Slider 宽度
    double trackWidth = parentBox.size.width;
    if (padding != null) {
      trackHeight -= padding!.bottom;
      trackHeight -= padding!.top;
      trackWidth -= padding!.right;
      trackWidth -= padding!.left;
      trackTop += padding!.top;
      trackLeft += padding!.left;
    }
    return Rect.fromLTWH(trackLeft, trackTop, trackWidth, trackHeight);
  }
}

class _ResetToneButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ElevatedButton(
      onPressed: () {
        final playerController =
            Get.find<IPlayerController>() as VidPlayerController;
        playerController.resetTone();
      },
      child: Text(
        i18nBook.measure.resetTone4Btn.t,
        style: const TextStyle(
          color: Colors.white,
          fontSize: 16,
        ),
      ),
    );
  }
}