import 'dart:math';
import 'package:bubble/bubble.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:trackoffical_app/screen.dart';
import 'package:trackoffical_app/service/game/game_model.dart';
import 'package:trackoffical_app/view/ingame/widget_ruler.dart';
import 'package:trackoffical_app/widget/compass2.dart';
import 'dart:ui' as ui;
import '../../model/game_map.dart';
import '../../model/m_control_point.dart';
import '../../service/game/game.dart';
import 'in_game_controller.dart';

const cpRadius = 15.0;

class LayerMap extends StatelessWidget {
  const LayerMap({super.key});

  @override
  Widget build(BuildContext context) {
    return Stack(
      children: [
        _LayerMapRotateStatic(),
        _Trajectory(),
        _LayerMapRuler(),
        _LayerMapFrontDraw(),
        _LayerCPNum(),
        _LayerCPStartBubble(),
        _LayerCompass(),
      ],
    );
  }
}

/// 地图图层，所有元素静态跟随整体旋转
class _LayerMapRotateStatic extends GetView<GameModel> {
  @override
  Widget build(BuildContext context) {
    return Obx(() {
      final model = controller;
      // model.mapRotateCenter = Offset(context.width / 2, context.height / 2);
      var tran = model.mapTransformMatrix.value;

      return Center(
        child: Transform(
          transform: tran,
          // alignment: Alignment.center,
          child: SizedBox(
              height: context.height,
              width: context.width,
              child: Stack(
                children: [
                  _StaticMap(),
                  _RoutePoints(tran, model.startAt == null),
                ],
              )),
        ),
      );
    });
  }
}

class _RoutePoints extends StatefulWidget {
  const _RoutePoints(this.tran, this.isOnlyStart);

  final Matrix4 tran;
  final bool isOnlyStart;

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

class _RoutePointsState extends State<_RoutePoints>
    with SingleTickerProviderStateMixin {
  final model = Get.find<GameModel>();
  final controller = Get.find<GameService>();
  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) {
    final radiusPx = controller.mapStatus.mapScaleSrc * cpRadius;

    final info = controller.mapStatus.gameMapData;
    final matrix = widget.tran;

    return Obx(() {
      var points = controller.controlPointWantSequence;

      return SizedBox(
        height: context.height,
        width: context.width,
        child: CustomPaint(
          painter: _RoutePointsPainter(
            points,
            info,
            matrix,
            radiusPx,
            _animation.value ?? 255,
            widget.isOnlyStart,
            model.nextPlanPointIndex.value,
          ),
        ),
      );
    });
  }

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

class _RoutePointsPainter extends CustomPainter {
  final List<MControlPoint> _points;
  final GameMap info;
  final Matrix4 matrix;
  final service = GameService.to;
  final double radiusPx;
  final int nextAlpha;
  static const nextColor = Colors.red;
  final bool isOnlyStart;
  final int? nextPlanIndex;

  _RoutePointsPainter(this._points, this.info, this.matrix, this.radiusPx,
      this.nextAlpha, this.isOnlyStart, this.nextPlanIndex);

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

    paint.strokeWidth = strokeWidthColor;
    final picFirstScale = service.mapStatus.picFirstScale;
    // final textSize = radiusPx * 0.6;
    final textSize = -22.0 / matrix[0];
    // const textSize = 5.0;

    const isShowText = false;

    var lastXY = Offset.zero;
    for (var i = _points.length - 1; i >= 0; i--) {
      if (isOnlyStart && i != 0) {
        continue;
      }

      final one = _points[i];
      if (one.onMap != Offset.zero) {
        // var xy = service.mapStatus.picOffsetToScreen(one.onMap);
        var xy =
            Offset(one.onMap.dx * picFirstScale, one.onMap.dy * picFirstScale);
        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 = const Color(0xffff00f7);

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

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

        // if (lastXY != Offset.zero) {
        if (i - 1 >= 0) {
          final next = _points[i - 1];
          lastXY = Offset(
              next.onMap.dx * picFirstScale, next.onMap.dy * picFirstScale);

          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) => false;
}

class _LayerMapFrontDraw extends GetView<GameService> {
  final model = Get.find<GameModel>();


  @override
  Widget build(BuildContext context) {
    return Obx(() {
      var points = controller.controlPointWantSequence;

      final info = controller.mapStatus.gameMapData;
      final matrix = controller.mapStatus.matrix.value;

      var showLocationAlpha = 255;
      if (controller.isOutBoundary || model.isEnableUserLocation) {
        showLocationAlpha = 255;
      }
      if (!model.isEnableUserLocation) {
        showLocationAlpha = 0;
      }

      return SizedBox(
        height: context.height,
        width: context.width,
        child: CustomPaint(
          painter: _LayerMapFrontDrawPainter(
              points,
              info,
              matrix,
              controller.positionOnMap ?? Offset.zero,
              controller.mapStatus.compassAngle,
              controller.mapStatus.rotateRadian,
              showLocationAlpha),
        ),
      );
    });
  }
}

class _LayerMapFrontDrawPainter extends CustomPainter {
  final List<MControlPoint> _points;
  final GameMap info;
  final Matrix4 matrix;
  final Offset myPositionOnMap;
  final service = GameService.to;
  final double northRadians;
  final double mapRadians;
  final int showLocationAlpha;

  _LayerMapFrontDrawPainter(
      this._points,
      this.info,
      this.matrix,
      this.myPositionOnMap,
      this.northRadians,
      this.mapRadians,
      this.showLocationAlpha);

  @override
  void paint(Canvas canvas, Size size) {
    final paint = Paint();
    drawMyLocation(canvas, paint);
    // drawRouteNumber(canvas, paint);
  }

  @override
  bool shouldRepaint(_LayerMapFrontDrawPainter oldDelegate) => false;

  drawMyLocation(Canvas canvas, Paint paint) {
    var myXY = service.mapStatus.picOffsetToScreen(myPositionOnMap);
    // final myXY = myPositionOnMap;

    final color = (const Color(0xFFFF0000)).withAlpha(showLocationAlpha);
    final color2 = (const Color(0xFFFFA1A1)).withAlpha(showLocationAlpha);
    paint.color = color;
    var rect = Rect.fromLTRB(myXY.dx - 12, myXY.dy - 40, myXY.dx + 12, myXY.dy);
    paint.shader = ui.Gradient.linear(rect.topCenter, rect.bottomCenter, [
      const Color(0x00FFFFFF),
      color2
    ], [
      0,
      1,
    ]);

    final path = Path();

    path.moveTo(rect.topLeft.dx, rect.topLeft.dy);
    path.lineTo(rect.topRight.dx, rect.topRight.dy);
    path.lineTo(rect.bottomCenter.dx, rect.bottomCenter.dy);

    canvas.drawPath(path, paint);
    paint.shader = null;

    paint.color = Colors.white.withAlpha(showLocationAlpha);
    canvas.drawCircle(myXY, 8, paint);
    paint.color = color;
    canvas.drawCircle(myXY, 5, paint);
  }

  drawRouteNumber(Canvas canvas, Paint paint) {
    var h0 = service.mapStatus.picOffsetToScreen(const Offset(0, 0));
    var h1 = service.mapStatus.picOffsetToScreen(const Offset(0, 60));
    final dx = h1.dx - h0.dx;
    final dy = h1.dy - h0.dy;
    var h = sqrt(dx * dx + dy * dy);

    for (var one in _points) {
      if (one.onMap != Offset.zero) {
        var xy = service.mapStatus.picOffsetToScreen(one.onMap);
        var x = xy.dx;
        var y = xy.dy;

        if (!one.isStart && !one.isFinish) {
          var textPainter = TextPainter(
            text: TextSpan(
                text: one.sn,
                style: const TextStyle(
                    color: Colors.white,
                    fontSize: 27,
                    fontWeight: FontWeight.w900,
                    letterSpacing: -3)),
            textDirection: TextDirection.rtl,
            textWidthBasis: TextWidthBasis.longestLine,
            maxLines: 1,
          )..layout();

          // textPainter.paint(canvas, Offset(x - textPainter.width / 2 -1 , y - textPainter.height -h + 3));

          textPainter = TextPainter(
            text: TextSpan(
                text: one.sn,
                style: const TextStyle(
                    color: Color(0xffff00f7),
                    fontSize: 22,
                    fontWeight: FontWeight.w700)),
            textDirection: TextDirection.rtl,
            textWidthBasis: TextWidthBasis.longestLine,
            maxLines: 1,
          )..layout();

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

  drawRoutes(Canvas canvas, Paint paint) {
    const radiusPx = 19.0;
    paint.strokeWidth = 2.18;

    var lastXY = Offset.zero;
    for (var one in _points) {
      if (one.onMap != Offset.zero) {
        var xy = service.mapStatus.picOffsetToScreen(one.onMap);
        var x = xy.dx;
        var y = xy.dy;

        paint.color = const Color(0xffff00f7);
        if (one.isSuccess) {
          paint.color = Colors.green;
        }
        if (one.isNext) {
          paint.color = const Color(0xffffcb00);
        }
        paint.style = PaintingStyle.fill;
        final thisXY = Offset(x, y);
        // canvas.drawCircle(thisXY, 2, paint);

        if (lastXY != Offset.zero) {
          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;
          }

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

        if (one.isStart) {
          paint.style = PaintingStyle.stroke;
          final path = Path();
          const widthLeft = 12;
          const widthRight = 18;
          const heightHalf = 17;

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

          canvas.drawPath(path, paint);
        } else if (one.isFinish) {
          paint.style = PaintingStyle.stroke;
          canvas.drawCircle(thisXY, radiusPx, paint);
          canvas.drawCircle(thisXY, 13.0, paint);
        } else {
          paint.style = PaintingStyle.stroke;
          canvas.drawCircle(thisXY, radiusPx, paint);
        }

        if (!one.isStart && !one.isFinish) {
          var textPainter = TextPainter(
            text: TextSpan(
                text: one.sn,
                style: TextStyle(color: paint.color, fontSize: 14)),
            textDirection: TextDirection.rtl,
            textWidthBasis: TextWidthBasis.longestLine,
            maxLines: 1,
          )..layout();

          textPainter.paint(canvas, Offset(x - textPainter.width / 2, y + 20));
        }
      }
    }
  }
}

class _LayerCPStartBubble extends GetView<GameService> {
  final service = GameService.to;

  @override
  Widget build(BuildContext context) {
    return Obx(() {
      var points = controller.controlPointWantSequence;

      if (service.startAt != null || points.isEmpty) {
        return const SizedBox();
      }
      final start = points[0];

      var xy = service.mapStatus
          .picOffsetToScreen(Offset(start.onMap.dx, start.onMap.dy));

      var x = xy.dx;
      var y = xy.dy;
      var h0 = service.mapStatus.picOffsetToScreen(const Offset(0, 0));
      var h1 = service.mapStatus.picOffsetToScreen(const Offset(0, 60));
      final dx = h1.dx - h0.dx;
      final dy = h1.dy - h0.dy;
      var h = sqrt(dx * dx + dy * dy);

      return Positioned(
        top: y,
        left: x + h + 1.0.wp,
        child: Bubble(
          nip: BubbleNip.leftTop,
          alignment: Alignment.topRight,
          child: const Text('打开始点后计时', style: TextStyle(color: Colors.red)),
        ),
      );
    });
  }
}

class _LayerCPNum extends GetView<GameService> {
  final model = Get.find<GameModel>();
  final service = GameService.to;
  static const style = TextStyle(
      color: Color(0xffff00f7), fontSize: 22, fontWeight: FontWeight.w700);
  final ingame = Get.find<InGameController>();

  @override
  Widget build(BuildContext context) {
    final radiusPx = controller.mapStatus.mapScaleSrc * cpRadius;

    return Obx(() {
      if (service.startAt == null) {
        return const SizedBox();
      }
      final scale = service.mapStatus.matrix.value[0].abs();


      var h0 = service.mapStatus.picOffsetToScreen(const Offset(0, 0));
      var h1 = service.mapStatus.picOffsetToScreen(Offset(0, radiusPx));
      final dx = h1.dx - h0.dx;
      final dy = h1.dy - h0.dy;
      var h = sqrt(dx * dx + dy * dy);
      final children = <Widget>[];
      h = radiusPx*scale*2;
      h = controller.mapStatus.mapScale.value * cpRadius + 4;

      var points = controller.controlPointWantSequence;
      for (var one in points) {
        if (one.onMap != Offset.zero) {
          var xy = service.mapStatus.picOffsetToScreen(one.onMap);
          var x = xy.dx;
          var y = xy.dy;

          if (!one.isStart && !one.isFinish) {
            final height = h + 24;
            children.add(Positioned(
              top: y - height,
              left: x - 40,
              width: 80,
              height: height,
              child: Transform.rotate(
                  angle: model.compassPlantRadian,
                  alignment: Alignment.bottomCenter,
                  child: Container(
                      alignment: Alignment.topCenter,
                      // color: Colors.white,
                      child: Text(one.sn, style: style))),
            ));
          }
        }
      }

      return Stack(
        children: children,
      );
    });
  }
}

class _StaticMap extends GetView<GameService> {
  @override
  Widget build(BuildContext context) {
    return Obx(() {
      final data = controller.mapStatus.gameMapData;
      final pic = controller.mapStatus.mapImageData.value;
      final geoInfo = data.mapPackage;
      if (pic.isNotEmpty && geoInfo != null) {
        // var fit = BoxFit.fitWidth;
        // if(data.width > data.height){
        //   fit = BoxFit.fitHeight;
        // }
        return Image.memory(controller.mapStatus.gameMapData.pic!,
            fit: BoxFit.contain);
      } else {
        return Container(
            width: context.width,
            height: context.height,
            decoration: const BoxDecoration(color: Colors.white));
      }
    });
  }
}

class _LayerCompass extends GetView<InGameController> {
  @override
  Widget build(BuildContext context) {
    GameModel model = Get.find();

    return Obx(() {
      if (controller.isShowCompass) {
        final diameter = controller.compassDiameter;
        final left = (context.width - diameter) / 2;

        return Positioned(
            left: left,
            top: controller.compassCenter.dy - diameter / 2,
            child: Compass2(
              compassRadians: model.compassRadiansFused.value,
              mapNorthRadians: model.compassPlantRadian,
              nextPointRadians: controller.isShowNextCPRadians.value
                  ? model.compassPlantRadian
                  : null,
              level: controller.compassLevel.value,
              showDegrees: model.compassShowDegrees,
              diameter: diameter,
            ));
      } else {
        return Container();
      }
    });
  }
}

class _LayerMapRuler extends GetView<InGameController> {
  final service = GameService.to;

  @override
  Widget build(BuildContext context) {
    return Obx(() {
      if (controller.isShowRuler.value) {
        final mapScale = service.mapStatus.mapScale.value;
        if (mapScale == 0) {
          return const SizedBox();
        }

        var height = context.height / 2;
        var hideHeight = 0.0;

        if (controller.isMapRotateAtCompassCenter.value) {
          height = controller.compassCenter.dy;
          hideHeight = controller.compassDiameter / 2 + 1;
        }

        return Container(
            alignment: Alignment.topCenter,
            padding: EdgeInsets.only(top: context.mediaQueryPadding.top),
            height: height,
            child: Ruler(hideHeight: hideHeight, mapScale: mapScale));
      } else {
        return const SizedBox();
      }
    });
  }
}

class _Trajectory extends GetView<GameModel> {
  @override
  Widget build(BuildContext context) {
    return Obx(() {
      return SizedBox(
        height: context.height,
        width: context.width,
        child: CustomPaint(
          painter: _TrajectoryPainter(
              controller.trajectoryPoints, controller.isDrawTrajectory),
        ),
      );
    });
  }
}

class _TrajectoryPainter extends CustomPainter {
  final bool isShow;
  final List<Offset> _points;
  final painter = Paint()
    ..strokeWidth = 3
    ..color = const Color(0xFF309EF9)
    ..style = PaintingStyle.stroke
    ..isAntiAlias = true;

  final service = GameService.to;

  _TrajectoryPainter(this._points, this.isShow);

  @override
  void paint(Canvas canvas, Size size) {
    if (_points.length > 1 && isShow) {
      var alpha = 255;
      final lineCount = _points.length - 1;
      final alphaStep = (alpha / lineCount).round();

      for (var i = 1; i < _points.length; i++) {
        final one = _points[i];
        final last = _points[i - 1];
        final p1 = service.mapStatus.picOffsetToScreen(last);
        final p2 = service.mapStatus.picOffsetToScreen(one);

        painter.color = Color.fromARGB(alpha, 255, 0, 0);
        canvas.drawLine(p1, p2, painter);
        alpha -= alphaStep;
        if (alpha < 0) {
          alpha = 0;
        }
      }
    }
  }

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