import 'dart:math';
import 'package:trackoffical_app/logger.dart';
import 'package:trackoffical_app/screen.dart';
import 'package:trackoffical_app/service/app.dart';
import 'layer.dart';
import '../../../model/m_control_point.dart';

class _LayerParams {
  bool isHideRouteBeforeStart = true;
  List<MControlPoint> wantList = [];
  List<Offset> wantListOnScreen = [];
  int? nextPlanCPIndex;
  double radiusPx = 0;
  bool isStarted = false;
  double numRadians=0;
}

class LayerCP extends GetView<LayerController> {
  LayerCP({
    super.key,
    required bool isHideRouteBeforeStart,
    required List<MControlPoint> wantList,
    int? nextPlanCPIndex,
    double? numRadians
  }) : _params = _LayerParams()
          ..isHideRouteBeforeStart = isHideRouteBeforeStart
          ..wantList = wantList
          ..numRadians=numRadians??0
          ..nextPlanCPIndex = nextPlanCPIndex;
  final _LayerParams _params;

  final _userProfile = App.to.userProfile;
  Color get colorCP => _userProfile.gameSettingsCpColor.value;



  @override
  Widget build(BuildContext context) {
    return Obx(() {
      _params.wantListOnScreen.clear();
      for (var one in _params.wantList) {
        final p = controller.mapOffsetToScreen(one.onMap);
        _params.wantListOnScreen.add(p);
        if (one.isStart) {
          _params.isStarted = one.isSuccess;
        }
      }

      _params.radiusPx =
          controller.meterToOnScreen(controller.cpRadiusMeter.value);

      final children = <Widget>[
        _LayerCPContent(
          params: _params,
        )
      ];

      wCPNum(children);

      return Layer(children: children);
    });
  }

  wCPNum(List<Widget> children) {
    if ((!_params.isStarted) && _params.isHideRouteBeforeStart) {
      return const SizedBox();
    }

    final style = TextStyle(
        color: colorCP, fontSize: 22, fontWeight: FontWeight.w700);

    var h = _params.radiusPx * 1.1;
    if(h.isNaN){
      return;
    }
    const textHeight = 30.0;

    var points = _params.wantList;
    for (var i = 0; i < points.length; i++) {
      final one = points[i];
      var xy = _params.wantListOnScreen[i];
      var x = xy.dx;
      var y = xy.dy;

      if (!one.isStart && !one.isFinish) {
        final height = h + textHeight;

        children.add(Positioned(
          top: y - height,
          left: x - 40,
          width: 80,
          height: height,
          child: Transform.rotate(
              angle: _params.numRadians,
              alignment: Alignment.bottomCenter,
              child: Container(
                  alignment: Alignment.topCenter,
                  // color: Colors.white,
                  child: Text(one.sn, style: style))),
        ));
      }
    }
  }
}

class _LayerCPContent extends StatefulWidget {
  const _LayerCPContent({
    required _LayerParams params,
  }) : _params = params;
  final _LayerParams _params;

  @override
  State<StatefulWidget> createState() {
    return _LayerCPContentState();
  }
}

class _LayerCPContentState extends State<_LayerCPContent>
    with SingleTickerProviderStateMixin {
  late AnimationController _animationController;
  late Animation<int> _animation;

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

    _animationController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 500),
      reverseDuration: const Duration(milliseconds: 500),
    )..repeat(reverse: true);
    _animation = IntTween(begin: 255, end: 0).animate(_animationController)
      ..addListener(() {
        setState(() {
          // The state that has changed here is the animation object’s value.
        });
      });
  }

  @override
  Widget build(BuildContext context) {
    return SizedBox(
        width: context.width,
        height: context.height,
        child: CustomPaint(
          painter: _RoutePointsPainter(
            widget._params,
            _animation.value,
          ),
        ));
  }

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

class _RoutePointsPainter extends CustomPainter {
  final _userProfile = App.to.userProfile;
  Color get colorCP => _userProfile.gameSettingsCpColor.value;
  Color get colorCPTarget => _userProfile.gameSettingsCpTargetColor.value;
  Color get colorCPJump => _userProfile.gameSettingsCpJumpColor.value;
  Color get colorCPPunched => _userProfile.gameSettingsCpPunchedColor.value;

  final _LayerParams params;
  final int nextAlpha;

  _RoutePointsPainter(
    this.params,
    this.nextAlpha,
  );

  @override
  void paint(Canvas canvas, Size size) {
    final paint = Paint();
    final radiusPx = params.radiusPx;
    final nextPlanIndex = params.nextPlanCPIndex;
    final strokeWidthColor = radiusPx * 0.15;
    final strokeWidthWhite = strokeWidthColor * 2;

    paint.strokeWidth = strokeWidthColor;

    final textSize = 8.0.wp;
    // const textSize = 5.0;

    const isShowText = false;

    var lastXY = Offset.zero;
    for (var i = params.wantList.length - 1; i >= 0; i--) {
      if ((!params.isStarted) && params.isHideRouteBeforeStart && i != 0) {
        continue;
      }

      final one = params.wantList[i];
      if (one.onMap != Offset.zero) {
        var xy = params.wantListOnScreen[i];
        var x = xy.dx;
        var y = xy.dy;

        var isNext = false;
        var isJumped = false;
        if (nextPlanIndex == null) {
          isNext = one.isNext;
        } else {
          isNext = i == nextPlanIndex;
          isJumped = !one.isSuccess && i < nextPlanIndex;
        }

        var color = colorCP;

        var strokeColor = Colors.white;
        if (one.isSuccess) {
          color = colorCPPunched;
        }
        if (isNext) {
          color = colorCPTarget.withAlpha(nextAlpha);
          strokeColor = Colors.white.withAlpha(nextAlpha);
          // paint.color = const Color(0xffff4d00);
        }
        if (isJumped) {
          color = colorCPJump;
        }

        paint.style = PaintingStyle.fill;
        final thisXY = Offset(x, y);
        // canvas.drawCircle(thisXY, 2, paint);

        // if (lastXY != Offset.zero) {
        if (i - 1 >= 0) {
          final next = params.wantList[i - 1];
          lastXY = params.wantListOnScreen[i - 1];

          final dx = thisXY.dx - lastXY.dx;
          final dy = thisXY.dy - lastXY.dy;
          final len = sqrt(dx * dx + dy * dy);

          final dx1 = dx / len * radiusPx;
          final dy1 = dy / len * radiusPx;

          var p1 = lastXY + Offset(dx1, dy1);
          var p2 = thisXY - Offset(dx1, dy1);

          if (p1.dx.isNaN || p1.dy.isNaN || p2.dx.isNaN || p2.dy.isNaN) {
            continue;
          }
          paint.color = strokeColor;
          paint.strokeWidth = strokeWidthWhite;
          canvas.drawLine(p1, p2, paint);

          paint.color = color;
          paint.strokeWidth = strokeWidthColor;
          canvas.drawLine(p1, p2, paint);
        }
        lastXY = thisXY;

        if (one.isStart) {
          final path = Path();
          final widthLeft = radiusPx * 0.9;
          final widthRight = radiusPx * 1.1;
          final heightHalf = radiusPx;

          path.moveTo(x - widthLeft, y - heightHalf);
          path.lineTo(x + widthRight, y);
          path.lineTo(x - widthLeft, y + heightHalf);
          path.close();

          paint.style = PaintingStyle.stroke;
          paint.color = strokeColor;
          paint.strokeWidth = strokeWidthWhite;
          canvas.drawPath(path, paint);

          paint.color = color;
          paint.strokeWidth = strokeWidthColor;
          canvas.drawPath(path, paint);
        } else if (one.isFinish) {
          paint.style = PaintingStyle.stroke;
          paint.color = strokeColor;
          paint.strokeWidth = strokeWidthWhite;
          canvas.drawCircle(thisXY, radiusPx, paint);
          canvas.drawCircle(thisXY, radiusPx * 0.7, paint);

          paint.color = color;
          paint.strokeWidth = strokeWidthColor;
          canvas.drawCircle(thisXY, radiusPx, paint);
          canvas.drawCircle(thisXY, radiusPx * 0.7, paint);
        } else {
          paint.style = PaintingStyle.stroke;

          paint.color = strokeColor;
          paint.strokeWidth = strokeWidthWhite;
          canvas.drawCircle(thisXY, radiusPx, paint);

          paint.color = color;
          paint.strokeWidth = strokeWidthColor;
          canvas.drawCircle(thisXY, radiusPx, paint);
        }

        if (!one.isStart && !one.isFinish && isShowText) {
          var textPainter = TextPainter(
            text: TextSpan(
                text: one.sn,
                style: TextStyle(
                    color: paint.color,
                    fontSize: textSize,
                    fontWeight: FontWeight.w700)),
            textDirection: TextDirection.rtl,
            textWidthBasis: TextWidthBasis.longestLine,
            maxLines: 1,
          )..layout();

          textPainter.paint(
              canvas,
              Offset(x - textPainter.width / 2,
                  y - textPainter.height - radiusPx));
        }
      }
    }
  }

  @override
  bool shouldRepaint(_RoutePointsPainter oldDelegate) => true;
}