import 'dart:ui';

import 'package:fis_i18n/i18n.dart';
import 'package:fis_jsonrpc/rpc.dart';
import 'package:fis_measure/interfaces/date_types/int_size.dart';
import 'package:fis_measure/interfaces/enums/operate.dart';
import 'package:fis_measure/interfaces/process/calculators/output.dart';
import 'package:fis_measure/interfaces/process/player/play_controller.dart';
import 'package:fis_measure/interfaces/process/standard_line/calibration.dart';
import 'package:fis_measure/interfaces/process/workspace/application.dart';
import 'package:fis_measure/interfaces/process/workspace/mobile_measure_view_state_controller.dart';
import 'package:fis_measure/process/workspace/measure_data_controller.dart';
import 'package:fis_measure/process/workspace/measure_handler.dart';
import 'package:fis_measure/process/workspace/third_part/application.dart';
import 'package:fis_measure/process/workspace/third_part/calibration_controller.dart';
import 'package:fis_measure/utils/canvas.dart';
import 'package:fis_measure/utils/prompt_box.dart';
import 'package:fis_measure/values/colors.dart';
import 'package:fis_measure/view/button_group/button_group.dart';
import 'package:fis_measure/view/gesture/annotation/annotation_gesture.dart';
import 'package:fis_measure/view/gesture/mobile_annotation/mobile_annotation_gesture.dart';
import 'package:fis_measure/view/gesture/touch_gesture.dart';
import 'package:fis_measure/view/measure/capture_image.dart';
import 'package:fis_measure/view/measure/measure_result.dart';
import 'package:fis_measure/view/mobile_view/controller/mobile_measure_view_state_controller.dart';
import 'package:fis_measure/view/mobile_view/mobile_bottom_menu.dart';
import 'package:fis_measure/view/mobile_view/mobile_right_panel.dart';
import 'package:fis_measure/view/mobile_view/mobile_top_menu.dart';
import 'package:fis_measure/view/mobile_view/widgets/magnifier.dart';
import 'package:fis_measure/view/paint/ai_patint.dart';
import 'package:fis_measure/view/paint/ai_patint_controller.dart';
import 'package:fis_measure/view/result/results_panel.dart';
import 'package:fis_measure/view/standard_line/calibration_canvas.dart';
import 'package:fis_measure/view/standard_line/calibration_gesture.dart';
import 'package:fis_ui/index.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:get/get.dart';

import 'package:fis_measure/view/canvas/active_canvas.dart';
import 'package:fis_measure/view/canvas/annotation_canvas.dart';
import 'package:fis_measure/view/canvas/records_canvas.dart';
import 'package:fis_measure/view/gesture/mouse_gesture.dart';
import 'package:fis_measure/view/player/controller.dart';
import 'package:fis_measure/view/player/player.dart';

class MobileMeasureMainView extends StatefulWidget implements FWidget {
  const MobileMeasureMainView({Key? key}) : super(key: key);

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

class _MobileMeasureMainViewState extends State<MobileMeasureMainView> {
  late final application = Get.find<IApplication>();

  late final playerController = Get.find<IPlayerController>();
  late final measureHandler = Get.find<IMeasureHandler>();

  /// 测量数据
  final measureData = Get.find<MeasureDataController>();

  late bool canMeasure = application.canMeasure;
  late final aiPatintController = Get.find<AiPatintController>();

  late bool enableCarotid2DMeasure = false;
  bool isCaptureState = false; // 是否是截图状态
  late double calibrationLine = 4;
  final List<OutputItem> outputs = [];

  /// 是否显示顶部菜单
  bool ifShowTopMenu = true;

  /// 是否显示进度条
  bool ifShowBottomMenu = true;

  /// 是否为纯播放器模式
  bool isPlayerMode = true;

  /// 参考校准线控制器
  IStandardLineCalibrationController? standardLineCalibrationController;

  final playerKey = GlobalKey();
  final _ImageCaptureAreakey = GlobalKey();

  bool get inAnnotation =>
      application.currentOperateType == MeasureOperateType.annotation;

  @override
  void initState() {
    super.initState();
    installStandardLine();
    getNoteCommentsList();
    final mobileMeasureStateController =
        Get.put(MobileMeasureViewStateController());
    mobileMeasureStateController.onModeChanged.addListener(_onViewModeChanged);
    // VidPlayerController vidPlayerController =
    //     playerController as VidPlayerController;
    WidgetsBinding.instance!.addPostFrameCallback((timeStamp) {
      onCanMeasureChanged(this, application.canMeasure);
      application.canMeasureChanged.addListener(onCanMeasureChanged);
      application.operateTypeChanged.addListener(onOperateTypeChanged);
    });
  }

  @override
  void dispose() {
    final mobileMeasureStateController =
        Get.find<MobileMeasureViewStateController>();
    mobileMeasureStateController.onModeChanged
        .removeListener(_onViewModeChanged);
    Get.delete<MobileMeasureViewStateController>();
    application.canMeasureChanged.removeListener(onCanMeasureChanged);
    application.operateTypeChanged.removeListener(onOperateTypeChanged);
    uninstallStandardLine();
    super.dispose();
  }

  ///移动端测量模式切换
  void _onViewModeChanged(Object s, MobileMeasureMode mode) {
    switch (mode) {
      case MobileMeasureMode.playerMode:
        setState(() {
          isPlayerMode = true;
        });
        break;
      case MobileMeasureMode.measureMode:
        setState(() {
          isPlayerMode = false;
        });
        break;
      case MobileMeasureMode.annotationMode:
        setState(() {
          isPlayerMode = false;
        });
        break;
    }
  }

  /// 装载参考校准线
  void installStandardLine() {
    if (application.isThirdPart) {
      final standradLine = (application as ThirdPartApplication).standardLine;
      standardLineCalibrationController =
          StandardLineCalibrationController(application, standradLine);
      standardLineCalibrationController!.editStateChanged
          .addListener(onStandardLineCalibrationStateChanged);
      Get.put<IStandardLineCalibrationController>(
          standardLineCalibrationController!);
    }
  }

  /// 卸载参考校准线
  void uninstallStandardLine() {
    standardLineCalibrationController?.editStateChanged
        .removeListener(onStandardLineCalibrationStateChanged);
    Get.delete<IStandardLineCalibrationController>();
  }

  /// 保存图片
  void capturePng() async {
    print('capturePng');
    if (!isCaptureState) {
      setState(() {
        isCaptureState = true;
      });
      for (var item in application.measureItems) {
        if (item.calculator != null) {
          // 添加历史测量值
          outputs.addAll(item.calculator!.outputs);
          if (item.feature?.isActive == true &&
              item.calculator!.output != null) {
            // 添加活动测量值
            outputs.add(item.calculator!.output!);
          }
        }
      }
      MeasureResult measureResult = MeasureResult(
        measureApplicationName: application.applicationName,
        outputList: outputs,
      );
      await Future.delayed(const Duration(milliseconds: 10), () async {
        final RenderRepaintBoundary? boundary =
            _ImageCaptureAreakey.currentContext?.findRenderObject()
                as RenderRepaintBoundary?;

        if (boundary != null) {
          final image = await boundary.toImage();
          final byteData = await image.toByteData(format: ImageByteFormat.png);
          final pngBytes = byteData!.buffer.asUint8List();

          await measureData.saveImage.call(
            pngBytes,
            measureData.measureImageData.patientCode ?? '',
            measureData.measureImageData.recordCode ?? '',
            measureData.measureImageData.remedicalCode ?? '',
            measureResult.toDisplay(),
          );
          PromptBox.snackbar("保存位置：测量图像",
              title: "截图保存成功",
              textColor: const Color.fromARGB(255, 219, 219, 219));
          Future.delayed(
            const Duration(
              milliseconds: 800,
            ),
            () {
              Get.back();
            },
          );
          setState(() {
            isCaptureState = false;
          });
        }
      });
    }
  }

  /// 注释获取
  void getNoteCommentsList() async {
    List<String> commentsList = [];
    var measureCommentItemResult =
        await measureData.getCommentsByApplicationAsync(
      application.applicationName,
      application.categoryName,
    );
    measureData.measureCommentItemResult =
        measureCommentItemResult?.commentItems ?? [];

    measureCommentItemResult?.commentItems?.forEach((element) {
      commentsList.add(element.text ?? '');
    });
    measureData.getCommentsList = commentsList;
  }

  void onCanMeasureChanged(Object sender, bool e) {
    if (e != canMeasure) {
      setState(() {
        canMeasure = e;
      });
    }
  }

  void onOperateTypeChanged(Object sender, MeasureOperateType e) {
    setState(() {});
  }

  void onStandardLineCalibrationStateChanged(
      Object sender, StandardLineCalibrationEditState e) {
    setState(() {
      if (e == StandardLineCalibrationEditState.drawn) {
        Get.dialog(buildCalibrationLine());
      }
    });
  }

  FWidget buildCalibrationLine() {
    return FSimpleDialog(
      title: FText(
        i18nBook.measure.guideCalibration.t,
        style: const TextStyle(
          color: Colors.white,
          fontSize: 18,
        ),
      ),
      isDefault: true,
      onOk: () {
        standardLineCalibrationController!.confirmEdit(calibrationLine);
        Get.back();
      },
      onCancel: () {
        standardLineCalibrationController!.cancelEdit();
        Get.back();
      },
      children: [
        buildCalibrationLineItem(
          i18nBook.measure.length.t,
          FTextField(
            decoration: InputDecoration(
              hintText: i18nBook.common.input.t + i18nBook.measure.length.t,
              hintStyle: const TextStyle(
                fontSize: 16,
              ),
              enabledBorder: OutlineInputBorder(
                borderSide: BorderSide(
                  color: Colors.white.withOpacity(0.5),
                  width: 0.5,
                  style: BorderStyle.solid,
                ),
              ),
              focusedBorder: const OutlineInputBorder(
                borderSide: BorderSide(
                  color: Colors.blue,
                  width: 0.5,
                  style: BorderStyle.solid,
                ),
              ),
              filled: true,
            ),
            onChanged: (val) => calibrationLine = double.parse(val),
          ),
        ),
        buildCalibrationLineItem(
          i18nBook.measure.unit.t,
          const FText('cm'),
        ),
      ],
    );
  }

  FWidget buildCalibrationLineItem(String name, FWidget itemWidget) {
    return FContainer(
      padding: const EdgeInsets.symmetric(vertical: 15, horizontal: 25),
      child: FRow(
        children: [
          FContainer(
            width: 60,
            child: FText(name),
          ),
          FExpanded(
            child: itemWidget,
          ),
        ],
      ),
    );
  }

  /// 布局说明：
  /// 移动端横屏布局分为四个部分
  /// 1 撑满全屏的多层 Canvas （CustomMultiChildLayout）
  /// 2 顶部菜单栏（MobileTopMenu）
  /// 3 底部菜单栏（MobileBottomMenu）
  /// 4 右侧操作面板（MobileRightPanel）
  /// 5 可变区域，播放器状态下，5 属于 4，非播放器状态下，5 属于 2
  /// +------------------------------------+-----+
  /// |                 2                  |  5  |
  /// |------------------------------------+-----|
  /// |                                    |     |
  /// |                 1                  |  4  |
  /// |                                    |     |
  /// |------------------------------------+-----|
  /// |                     3                    |
  /// +------------------------------------------+
  /// 除了【区域1】之外，可以定义其他每个分区的尺寸 (width, height) : (W2, H2)、(W3, H3)、(W4, H4)
  /// 【区域2】 H2 : 50, W2 : 100%, 左侧设置 10 的 padding
  ///

  @override
  Widget build(BuildContext context) {
    MeasureCanvasExt.setFontFamily(
        Theme.of(context).textTheme.button?.fontFamily);
    bool canShowAI = [
      DiagnosisConclusionEnum.Benign,
      DiagnosisConclusionEnum.Malignant,
      DiagnosisConclusionEnum.BenignAndMalignant
    ].contains(measureData.diagnosisConclusion);
    return Container(
      color: MeasureColors.Background,
      child: RepaintBoundary(
        child: Stack(
          alignment: Alignment.bottomCenter,
          children: [
            RepaintBoundary(
              key: _ImageCaptureAreakey,
              child: CustomMultiChildLayout(
                delegate: _LayerLayoutDelegate(),
                children: [
                  LayoutId(
                    id: _LayerLayoutIds.background,
                    child: Container(
                      color: MeasureColors.Background,
                    ),
                  ),
                  LayoutId(
                    id: _LayerLayoutIds.player,
                    child: VidPlayer(
                      playerController as VidPlayerController,
                    ),
                  ),
                  if (!isPlayerMode && canMeasure) ...[
                    LayoutId(
                      id: _LayerLayoutIds.recordsCanvas,
                      child: const MeasureRecordsCanvasPanel(),
                    ),
                    LayoutId(
                      id: _LayerLayoutIds.activeMeasure,
                      child: const MeasureActiveCanvasPanel(),
                    ),
                    LayoutId(
                      id: _LayerLayoutIds.activeAnnotation,
                      child: const AnnotationCanvas(),
                    ),
                    if (application.isThirdPart)
                      LayoutId(
                        id: _LayerLayoutIds.standardLineCalibration,
                        child: StandardLineCalibrationCanvas(
                            standardLineCalibrationController!),
                      ),
                    LayoutId(
                      id: _LayerLayoutIds.gesture,
                      child: _buildGestureLayer(),
                    ),
                    LayoutId(
                      id: _LayerLayoutIds.result,
                      child: const SizedBox(
                          height: 200,
                          width: 140,
                          child: MeasureResultPanel(
                            resultFontSize: 12,
                          )),
                    ),
                    LayoutId(
                      id: _LayerLayoutIds.canvasMagnifier,
                      child: const CanvasMagnifier(),
                    ),
                  ],
                  if (isPlayerMode && canShowAI) ...[
                    LayoutId(
                      id: _LayerLayoutIds.paintAI,
                      child: AIPaintInfo(
                        playerController as VidPlayerController,
                      ),
                    )
                  ],
                ],
              ),
            ),
            const MobileRightPanel(),
            ifShowTopMenu ? MobileTopMenu(capturePng: capturePng) : Container(),
            ifShowBottomMenu ? const MobileBottomMenu() : Container(),
          ],
        ),
      ),
    );
  }

  Widget _buildGestureLayer() {
    if (application.isThirdPart) {
      if (standardLineCalibrationController!.isEditing) {
        return StandardLineCalibrationGesture(
            standardLineCalibrationController!);
      }
    }
    return inAnnotation
        ? const AnnotationTouchLayer()
        : const MeasureTouchGesturePanel();
  }
}

class _LayerLayoutDelegate extends MultiChildLayoutDelegate {
  Offset? layoutOffset;
  Size? layoutSize;

  _LayerLayoutDelegate();

  @override
  void performLayout(Size size) {
    if (!hasChild(_LayerLayoutIds.player)) return;

    final application = Get.find<IApplication>();
    final vidFrame = application.frameData;
    final imageSize = IntSize.fill(vidFrame?.width ?? 0, vidFrame?.height ?? 0);

    /// 以Contain方式填充布局，计算定位偏移量
    calcSize(size, imageSize);
    final offset = layoutOffset!;
    final renderSize = layoutSize!;

    /// 同步图像显示尺寸
    application.displaySize = renderSize;

    layoutLayer(_LayerLayoutIds.background, Offset.zero, size);
    layoutLayer(_LayerLayoutIds.player, offset, renderSize);

    /// 其他层按播放器尺寸位置层叠布局
    layoutLayer(_LayerLayoutIds.recordsCanvas, offset, renderSize);
    layoutLayer(_LayerLayoutIds.activeMeasure, offset, renderSize);
    layoutLayer(_LayerLayoutIds.activeAnnotation, offset, renderSize);
    layoutLayer(_LayerLayoutIds.standardLineCalibration, offset, renderSize);
    layoutLayer(_LayerLayoutIds.canvasMagnifier, offset, renderSize);
    layoutLayer(_LayerLayoutIds.gesture, offset, renderSize);
    layoutLayer(
      _LayerLayoutIds.result,
      const Offset(10, 50), // H2 : 50
      renderSize,
    );
    layoutLayer(_LayerLayoutIds.pause, offset, renderSize);
    layoutLayer(_LayerLayoutIds.paintAI, offset, renderSize);
  }

  void layoutLayer(_LayerLayoutIds layoutId, Offset offset, Size size) {
    if (hasChild(layoutId)) {
      layoutChild(
        layoutId,
        BoxConstraints.loose(size),
      );
      positionChild(layoutId, offset);
    }
  }

  void calcSize(Size size, IntSize imageSize) {
    final parentWHRatio = size.width / size.height;
    final imageWHRatio = imageSize.width / imageSize.height;
    if (imageWHRatio < parentWHRatio) {
      // 高度撑满
      final layoutWidth = size.height * imageWHRatio;
      final layoutHeight = size.height;
      final offsetX = (size.width - layoutWidth) / 2;
      layoutOffset = Offset(offsetX, 0);
      layoutSize = Size(layoutWidth, layoutHeight);
    } else if (imageWHRatio > parentWHRatio) {
      // 宽度撑满
      final layoutWidth = size.width;
      final layoutHeight = size.width / imageWHRatio;
      final offsetY = (size.height - layoutHeight) / 2;
      layoutOffset = Offset(0, offsetY);
      layoutSize = Size(layoutWidth, layoutHeight);
    } else {
      layoutOffset = Offset.zero;
      layoutSize = size;
    }
  }

  @override
  bool shouldRelayout(covariant MultiChildLayoutDelegate oldDelegate) {
    return false;
  }
}

enum _LayerLayoutIds {
  /// 黑色背景层
  background,

  /// 播放器
  player,

  /// 画布放大镜层
  canvasMagnifier,

  /// 测量记录画板
  recordsCanvas,

  /// 活动测量画板
  activeMeasure,

  /// 活动注释画板
  activeAnnotation,

  /// 结果面板
  result,

  /// 手势面板
  gesture,

  /// 暂停画板 后面需要优化命名
  pause,

  /// AI画板
  paintAI,

  /// 参考校准线画板
  standardLineCalibration,
}