fis_lib_measure/lib/view/ai_result_modifier/controller.dart

import 'dart:convert';
import 'dart:math';
import 'dart:typed_data';
import 'dart:ui' as ui;

import 'package:fis_common/index.dart';
import 'package:fis_common/logger/logger.dart';
import 'package:fis_i18n/i18n.dart';
import 'package:fis_jsonrpc/rpc.dart';
import 'package:fis_measure/process/language/measure_language.dart';
import 'package:fis_measure/process/visual/visual.dart';
import 'package:fis_measure/process/workspace/measure_data_controller.dart';
import 'package:fis_measure/process/workspace/rpc_helper.dart';
import 'package:fis_measure/process/workspace/visual_loader.dart';
import 'package:fis_measure/utils/prompt_box.dart';
import 'package:fis_measure/values/unit_desc.dart';
import 'package:fis_measure/view/ai_result_modifier/state.dart';
import 'package:fis_measure/view/mobile_view/widgets/throttle.dart' as utils;
import 'package:fis_ui/utils/sizer/sizer.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:path_drawing/path_drawing.dart';
import 'package:vid/us/vid_us_image.dart';
import 'package:vid/us/vid_us_unit.dart';
import 'package:http/http.dart' as http;

class AiResultModifierController extends GetxController {
  final rpcHelper = Get.find<RPCHelper>();
  MeasureDataController get measureData => Get.find<MeasureDataController>();

  /// 后台语言包控制器
  // final languageService = Get.find<LanguageService>();
  final state = AiResultModifierState();

  /// 传入参数 [图像code，图像帧下标，图像元数据, 图像编辑过的code]
  final String remedicalCode;
  final int currFrameIndex;
  final VidUsImage currFrame;

  /// 初次查询到的完整数据
  AIDiagnosisPerImageDTO resultDTO = AIDiagnosisPerImageDTO();

  /// 编辑后的完整数据【用于发给后端】
  AIDiagnosisPerImageDTO modifiedDataDTO = AIDiagnosisPerImageDTO();

  // 用于画布绘制的轮廓点集
  List<Offset> _canvasContoursPoints = [];
  // 用于画布绘制的关键点集【拖拽模式】
  List<Offset> _canvasKeyPoints = [];
  // 用于画布绘制的高亮关键点集【拖拽模式】
  final List<Offset> _canvasAffectedKeyPoints = [];
  // 用于画布绘制的病灶大小横纵比例线段【四个坐标下标】
  List<int> _canvasLesionSizePointsIndexes = [];
  // 用于画布绘制的轮廓关键点下标集合【画轮廓模式】
  final List<int> _canvasPenModeKeyPointIndexes = [];
  // 用于画布绘制的轮廓关键点下标集合【画轮廓模式】
  final List<Offset> _canvasNewContoursPoints = [];

  // 播放器组件的key
  final List<Offset> _aiPoints = [];
  // 病灶结论列表
  List<EnumItemDTO> _diagnosisEnumItems = [];
  // 当前横线像素长度
  int _horizontalLengthInPixel = 0;
  // 当前横线像素长度
  int _verticalLengthInPixel = 0;
  // 当前AI病灶下标
  int currentAiDetectedObjectIndex = 0;

  // 播放器区域的key
  GlobalKey framePlayerKey = GlobalKey();
  // 截图区域的key
  GlobalKey captureAreaKey = GlobalKey();
  // 画布组件的大小
  Size aiCanvasSize = Size.zero;
  // 图像的实际大小
  Size frameSize = Size.zero;
  // 图像的缩放比例
  double _scale = 1.0;
  // 图像的物理单位像素长度
  double _unitsPhysicalPixels = 0.0;
  // 图像的物理单位
  String _xUnit = '';

  // 当前的轮廓点集
  List<AIDiagnosisPoint2D> contours = [];
  // 当前的病灶大小
  AIDiagnosisLesionSize? lesionSize;

  // 当前的关键点集
  List<DiagnosisKeyPointDTO> keyPoints = [];
  // 当前受影响的高亮的关键点下标集合
  List<int> affectedKeyPointIndexes = [];
  // 当前操作模式
  AiResultModifierMode _mode = AiResultModifierMode.drag;
  // 当前是否正在绘制新轮廓
  bool _isDrawingNewContours = false;
  // 拖拽起点
  Offset _dragStartPoint = Offset.zero;
  // 拖拽开始时的轮廓点集【仅用于发请求】
  List<AIDiagnosisPoint2D> contoursOnDragStart = [];
  // 拖拽开始时的关键点集【仅用于发请求】
  List<DiagnosisKeyPointDTO> keyPointsOnDragStart = [];

  /// 测量语言包
  final measureLanguage = MeasureLanguage();

  AiResultModifierController(
      {required this.remedicalCode,
      required this.currFrameIndex,
      required this.currFrame});

  /// 多个ai病灶
  List<AIDetectedObject> get aiDetectedObjectList =>
      modifiedDataDTO.diagResultsForEachOrgan?.first.detectedObjects ?? [];

  /// 当前病灶
  AIDetectedObject? get aiDetectedObject => modifiedDataDTO
      .diagResultsForEachOrgan
      ?.first
      .detectedObjects?[currentAiDetectedObjectIndex];

  List<Offset> get aiPoints => _aiPoints;

  List<Offset> get canvasAffectedKeyPoints => _canvasAffectedKeyPoints;
  List<Offset> get canvasContoursPoints => _canvasContoursPoints;
  List<Offset> get canvasKeyPoints => _canvasKeyPoints;

  List<int> get canvasLesionSizePointsIndexes => _canvasLesionSizePointsIndexes;
  List<Offset> get canvasNewContoursPoints => _canvasNewContoursPoints;
  List<int> get canvasPenModeKeyPointIndexes => _canvasPenModeKeyPointIndexes;
  AiResultModifierMode get currMode => _mode;

  List<EnumItemDTO> get diagnosisEnumItems => _diagnosisEnumItems;

  /// 当前器官
  DiagnosisOrganEnum get diagnosisOrgan =>
      modifiedDataDTO.diagResultsForEachOrgan?.first.organ ??
      DiagnosisOrganEnum.Null;

  /// 获取病灶的水平长度
  String get horizontalLength =>
      _countLesionLengthWithUnit(_horizontalLengthInPixel);

  /// 获取病灶的垂直长度
  String get verticalLength =>
      _countLesionLengthWithUnit(_verticalLengthInPixel);

  /// 病灶横纵比
  String get lesionRatio =>
      _verticalLengthInPixel / _horizontalLengthInPixel > 1 ||
              _verticalLengthInPixel / _horizontalLengthInPixel == 1
          ? '> 1'
          : '< 1';

  /// 切换操作模式
  void changeModifierMode(AiResultModifierMode newMode) {
    if (_mode == newMode) return;
    _mode = newMode;
    _canvasAffectedKeyPoints.clear();
    update(['ai_result_modifier', 'ai_mode_change_buttons']);
  }

  /// 切换ai病灶
  Future<void> changeAiDetectedObjectIndex(int index) async {
    _setNewCurrContoursToModifiedDataDTO(
        oldIndex: currentAiDetectedObjectIndex);
    currentAiDetectedObjectIndex = index;
    await _updateContoursByIndex(index);
    update(['ai_result_canvas', 'ai_conclusion_result', 'ai_index_tag']);
  }

  /// 切换病灶轮廓
  Future<void> _updateContoursByIndex(int index) async {
    contours = modifiedDataDTO
            .diagResultsForEachOrgan![0].detectedObjects![index].contours ??
        [];
    List<AIDiagnosisDescription>? descriptions = modifiedDataDTO
        .diagResultsForEachOrgan![0].detectedObjects![index].descriptions;
    //遍历 descriptions 取出病灶大小
    for (AIDiagnosisDescription description in descriptions!) {
      if (description.type == DiagnosisDescriptionEnum.LesionSize) {
        lesionSize =
            AIDiagnosisLesionSize.fromJson(jsonDecode(description.value ?? ""));
      }
    }
    keyPoints = await _queryAllKeyPoints();
    _canvasAffectedKeyPoints.clear();
    _updateCurrContoursPoints();
    _updateCurrKeyPoints();
  }

  /// 更新当前轮廓点集【要在 currentAiDetectedObjectIndex 更新前触发】
  void _setNewCurrContoursToModifiedDataDTO({required int oldIndex}) {
    List<AIDiagnosisPoint2D> newContours =
        _convertCanvasPoints(_canvasContoursPoints);
    modifiedDataDTO.diagResultsForEachOrgan![0].detectedObjects![oldIndex]
        .contours = newContours;
    List<AIDiagnosisDescription>? descriptions = modifiedDataDTO
        .diagResultsForEachOrgan![0].detectedObjects![oldIndex].descriptions;
    //遍历 descriptions 更新病灶大小
    for (var i = 0; i < descriptions!.length; i++) {
      if (descriptions[i].type == DiagnosisDescriptionEnum.LesionSize) {
        descriptions[i].value = jsonEncode(lesionSize);
      }
    }
    modifiedDataDTO.diagResultsForEachOrgan![0].detectedObjects![oldIndex]
        .descriptions = descriptions;
  }

  /// 获取当前的新病灶大小
  AIDiagnosisLesionSize _getNewLesionSize(List<AIDiagnosisPoint2D> p1234,
      int newHorizontalLengthInPixel, int newVerticalLengthInPixel) {
    return AIDiagnosisLesionSize(
        horizontalPoint1: p1234[0],
        horizontalPoint2: p1234[1],
        verticalPoint1: p1234[2],
        verticalPoint2: p1234[3],
        horizontalLengthInPixel: newHorizontalLengthInPixel,
        verticalLengthInPixel: newVerticalLengthInPixel);
  }

  /// 上传当前封面图以及压缩后的缩略图
  Future<ImageUrls> _getCurrImageUrls() async {
    try {
      final Uint8List vidImageBytes = currFrame.imageData;

      /// 生成缩略图
      final Rect offscreenCanvasRect =
          Rect.fromLTWH(0, 0, frameSize.width, frameSize.height);
      final ui.PictureRecorder recorder = ui.PictureRecorder();
      final Canvas offscreenCanvas = Canvas(recorder, offscreenCanvasRect);
      offscreenCanvas.drawImage(
          await decodeImageFromList(vidImageBytes), Offset.zero, Paint());
      _paintAllContours(offscreenCanvas);
      final ui.Image orginalFileImage = await recorder
          .endRecording()
          .toImage(currFrame.width.toInt(), currFrame.height.toInt());
      final orginalFileByteData =
          await orginalFileImage.toByteData(format: ui.ImageByteFormat.png);
      final orginalFileByteDataBuffer =
          orginalFileByteData!.buffer.asUint8List();
      final String aiFileToken = await rpcHelper.rpc.storage.uploadUint8List(
              orginalFileByteDataBuffer,
              "ai_modified_orginal_${remedicalCode}_$currFrameIndex.png",
              rpcHelper.userToken) ??
          '';
      print('coverUrl: $aiFileToken');

      /// 生成缩略图
      final double scale = _calcScale(
        srcWidth: currFrame.width.toDouble(),
        srcHeight: currFrame.height.toDouble(),
        minWidth: 200,
        minHeight: 200,
      );
      final int scaledWidth = currFrame.width ~/ scale;
      final int scaledHeight = currFrame.height ~/ scale;
      final Rect previewOffscreenCanvasRect =
          Rect.fromLTWH(0, 0, scaledWidth.toDouble(), scaledHeight.toDouble());
      final ui.PictureRecorder lowLevelRecorder = ui.PictureRecorder();
      final Canvas previewOffscreenCanvas =
          Canvas(lowLevelRecorder, previewOffscreenCanvasRect);
      previewOffscreenCanvas.drawImageRect(orginalFileImage,
          offscreenCanvasRect, previewOffscreenCanvasRect, Paint());
      final ui.Image previewFileImage = await lowLevelRecorder
          .endRecording()
          .toImage(scaledWidth, scaledHeight);
      final previewFileByteData =
          await previewFileImage.toByteData(format: ui.ImageByteFormat.png);
      final previewFileByteDataBuffer =
          previewFileByteData!.buffer.asUint8List();
      final String previewFileUrl = await rpcHelper.rpc.storage.uploadUint8List(
              previewFileByteDataBuffer,
              "ai_modified_preview_${remedicalCode}_$currFrameIndex.png",
              rpcHelper.userToken) ??
          '';
      print('previewFileUrl: $previewFileUrl');
      return ImageUrls(
          aiFileToken: aiFileToken, previewFileUrl: previewFileUrl);
    } on Exception catch (e) {
      logger.e('get screenshot failed', e);
      return ImageUrls(aiFileToken: '', previewFileUrl: '', isUploaded: false);
    }
  }

  /// 计算压缩倍率
  double _calcScale({
    required double srcWidth,
    required double srcHeight,
    required double minWidth,
    required double minHeight,
  }) {
    var scaleW = srcWidth / minWidth;
    var scaleH = srcHeight / minHeight;
    var scale = max(1.0, min(scaleW, scaleH));
    return scale;
  }

  /// 在图像上绘制所有轮廓
  void _paintAllContours(Canvas canvas) {
    for (var i = 0;
        i < modifiedDataDTO.diagResultsForEachOrgan![0].detectedObjects!.length;
        i++) {
      contours = modifiedDataDTO
              .diagResultsForEachOrgan![0].detectedObjects![i].contours ??
          [];
      // 设置虚线圆点画笔
      final contoursPaint = Paint()
        ..color = Colors.green
        ..strokeCap = StrokeCap.round
        ..strokeWidth = 3.0
        ..style = PaintingStyle.stroke;
      // 遍历 contoursPoints 绘制轮廓
      if (contours.isNotEmpty) {
        Path path = Path();
        path.moveTo(contours[0].x.toDouble(), contours[0].y.toDouble());
        for (int i = 1; i < contours.length; i++) {
          path.lineTo(contours[i].x.toDouble(), contours[i].y.toDouble());
        }
        path.close();
        canvas.drawPath(
            dashPath(
              path,
              dashArray: CircularIntervalList<double>([1, 10]),
            ),
            contoursPaint);
      }
      AIDiagnosisLesionSize currLesionSize = AIDiagnosisLesionSize();
      List<AIDiagnosisDescription>? descriptions = modifiedDataDTO
          .diagResultsForEachOrgan![0].detectedObjects![i].descriptions;
      //遍历 descriptions 取出病灶大小
      for (AIDiagnosisDescription description in descriptions!) {
        if (description.type == DiagnosisDescriptionEnum.LesionSize) {
          currLesionSize = AIDiagnosisLesionSize.fromJson(
              jsonDecode(description.value ?? ""));
        }
      }
      final AIDiagnosisPoint2D p1 = currLesionSize.horizontalPoint1!;
      final AIDiagnosisPoint2D p2 = currLesionSize.horizontalPoint2!;
      final AIDiagnosisPoint2D p3 = currLesionSize.verticalPoint1!;
      final AIDiagnosisPoint2D p4 = currLesionSize.verticalPoint2!;
      Path path = Path();
      path.moveTo(p1.x.toDouble(), p1.y.toDouble());
      path.lineTo(p2.x.toDouble(), p2.y.toDouble());
      canvas.drawPath(
          dashPath(
            path,
            dashArray: CircularIntervalList<double>([1, 5]),
          ),
          contoursPaint);
      Path path2 = Path();
      path2.moveTo(p3.x.toDouble(), p3.y.toDouble());
      path2.lineTo(p4.x.toDouble(), p4.y.toDouble());
      canvas.drawPath(
          dashPath(
            path2,
            dashArray: CircularIntervalList<double>([1, 5]),
          ),
          contoursPaint);
      paintX(
        canvas,
        Offset(p1.x.toDouble(), p1.y.toDouble()),
        6.0,
        3,
        Colors.green,
      );
      paintX(
        canvas,
        Offset(p2.x.toDouble(), p2.y.toDouble()),
        6.0,
        3,
        Colors.green,
      );
      paintX(
        canvas,
        Offset(p3.x.toDouble(), p3.y.toDouble()),
        6.0,
        3,
        Colors.green,
      );
      paintX(
        canvas,
        Offset(p4.x.toDouble(), p4.y.toDouble()),
        6.0,
        3,
        Colors.green,
      );
    }
  }

  /// 绘制叉叉
  void paintX(
      Canvas canvas, Offset center, double radius, double width, Color color) {
    final paint = Paint()
      ..color = color
      ..strokeCap = StrokeCap.round
      ..strokeWidth = width
      ..style = PaintingStyle.stroke;
    Path path = Path();
    path.moveTo(center.dx - radius, center.dy - radius);
    path.lineTo(center.dx + radius, center.dy + radius);
    path.moveTo(center.dx + radius, center.dy - radius);
    path.lineTo(center.dx - radius, center.dy + radius);
    canvas.drawPath(path, paint);
  }

  /// 获取AI模块的翻译值
  String getValuesFromAiLanguage(String code) {
    final value = measureLanguage.t('ai', code);
    return value;
  }

  /// 重置AI结果
  void resetAIResult() async {
    await _initAIResult();
    update(['ai_conclusion_result', 'ai_result_sleek_circular_slider']);
  }

  @override
  void onClose() {
    super.onClose();
    Sizer.ins.removeListener(_onWindowResize);
  }

  @override
  void onInit() async {
    super.onInit();
    await _getDiagnosisEnumItemsAsync();
    _updateModifierInteractiveLayerSize();
    _updateImagePhysicalSize();
    _initAIResult();
    Sizer.ins.addListener(_onWindowResize);
  }

  /// 窗口大小改变
  void _onWindowResize(_) {
    update(['ai_result_modifier']);
    frameSize = Size(currFrame.width.toDouble(), currFrame.height.toDouble());
    WidgetsBinding.instance.addPostFrameCallback((_) {
      final RenderBox box =
          framePlayerKey.currentContext!.findRenderObject() as RenderBox;
      final framePlayerSize = Size(box.size.width, box.size.height);
      _scale = min(framePlayerSize.width / frameSize.width,
          framePlayerSize.height / frameSize.height);
      aiCanvasSize = Size(frameSize.width * _scale, frameSize.height * _scale);
      _updateModifierInteractiveLayerSize();
      _updateCurrKeyPoints();
      _updateCurrContoursPoints();
      _updateCurrAffectedKeyPoints();
      // 更新交互层尺寸
      update(["ai_result_modifier_interactive_layer", "ai_result_canvas"]);
    });
  }

  /// 鼠标拖拽
  void onMouseDrag(DragUpdateDetails details) {
    switch (_mode) {
      case AiResultModifierMode.drag:
        utils.throttle(() {
          _onDragModeCallDragFunction(details.localPosition);
        }, 'onMouseDrag', 100);
        break;
      case AiResultModifierMode.pen:
        _onPenModeCallDragFunction(details.localPosition);
        break;
      default:
    }
  }

  /// 鼠标拖拽结束
  void onMouseDragEnd(DragEndDetails details) async {
    switch (_mode) {
      case AiResultModifierMode.drag:
        break;
      case AiResultModifierMode.pen:
        if (_isDrawingNewContours) {
          _isDrawingNewContours = false;
          await _callContourMergeAsync();
          _updateCurrContoursPoints();
          _updateCurrKeyPoints();
        }
        _canvasNewContoursPoints.clear();
        update(['ai_result_canvas']);
        break;
      default:
    }
  }

  /// 鼠标拖拽开始【记录起点】
  void onMouseDragStart(DragDownDetails details) {
    switch (_mode) {
      case AiResultModifierMode.drag:
        _dragStartPoint = details.localPosition;
        contoursOnDragStart = contours;
        keyPointsOnDragStart = keyPoints;
        break;
      case AiResultModifierMode.pen:
        if (_canvasPenModeKeyPointIndexes.isNotEmpty) {
          _isDrawingNewContours = true;
          _dragStartPoint = details.localPosition;
          _canvasNewContoursPoints.clear();
          _canvasNewContoursPoints
              .add(_canvasContoursPoints[_canvasPenModeKeyPointIndexes[0]]);
          _canvasNewContoursPoints.add(_dragStartPoint);
        }
        break;
      default:
    }
  }

  /// 鼠标离开区域
  void onMouseExit(PointerExitEvent e) async {
    // 延迟200ms (因为鼠标位置更新高亮关键点有100ms延迟)
    await Future.delayed(const Duration(milliseconds: 200));
    _canvasAffectedKeyPoints.clear();
    update(['ai_result_canvas']);
  }

  /// 鼠标悬浮移动
  void onMouseHover(PointerHoverEvent e) async {
    if (keyPoints.isEmpty) return;
    switch (_mode) {
      case AiResultModifierMode.drag:
        utils.throttle(() {
          _onDragModeCallHoverFunction(e.localPosition);
        }, 'onMouseHover', 100);
        break;
      case AiResultModifierMode.pen:
        utils.throttle(() {
          _onPenModeCallHoverFunction(e.localPosition);
        }, 'onMouseHover', 10);
        // Offset point = e.localPosition;
        break;
      default:
    }
  }

  @override
  void onReady() {
    super.onReady();
    _initData();
  }

  /// 保存AI修改结果
  Future<void> saveAIResult({
    String? code,
  }) async {
    PromptBox.toast(i18nBook.realTimeConsultation.uploading.t);
    _setNewCurrContoursToModifiedDataDTO(
        oldIndex: currentAiDetectedObjectIndex);
    try {
      final ImageUrls imageUrls = await _getCurrImageUrls();
      if (!imageUrls.isUploaded) {
        PromptBox.toast(i18nBook.user.saveFailed.t);
        return;
      }
      bool hasRemedicalAISelectedInfoCode = measureData
          .measureImageData.remedicalAISelectedInfoCode.isNotNullOrEmpty;
      final result =
          await rpcHelper.rpc.remedical.saveRemedicalAISelectedInfoAsync(
        SaveRemedicalAISelectedInfoRequest(
          token: rpcHelper.userToken,
          remedicalCode: hasRemedicalAISelectedInfoCode ? null : remedicalCode,
          code: hasRemedicalAISelectedInfoCode
              ? measureData.measureImageData.remedicalAISelectedInfoCode
              : null,
          frameIndex: currFrameIndex,
          // diagnosisConclusion: diagnosisOrgan,
          previewFileToken: imageUrls.previewFileUrl,
          aIFileToken: imageUrls.aiFileToken,
          diagnosisData: jsonEncode(modifiedDataDTO),
        ),
      );
      if (result) {
        PromptBox.toast(
            "${i18nBook.user.saveSuccess.t} \r\n ${i18nBook.measure.saveLocation.t + ' > ' + i18nBook.measure.aiImage.t}");
        Get.back();
      } else {
        PromptBox.toast(i18nBook.user.saveFailed.t);
      }
    } catch (e) {
      PromptBox.toast(i18nBook.user.saveFailed.t);
    }
  }

  /// 加载AI结果并调用绘制
  Future<void> _initAIResult() async {
    try {
      if (measureData
          .measureImageData.remedicalAISelectedInfoCode.isNotNullOrEmpty) {
        resultDTO = AIDiagnosisPerImageDTO.fromJson(
            jsonDecode(measureData.aiResults)[0]);
      } else {
        final result =
            await rpcHelper.rpc.remedical.getRemedicalDiagnosisDataAsync(
          GetRemedicalDiagnosisDataRequest(
            token: rpcHelper.userToken,
            remedicalCode: remedicalCode,
            frameIndex: currFrameIndex,
          ),
        );
        resultDTO = AIDiagnosisPerImageDTO.fromJson(jsonDecode(result));
      }

      modifiedDataDTO = resultDTO;
      contours = resultDTO.diagResultsForEachOrgan![0]
              .detectedObjects![currentAiDetectedObjectIndex].contours ??
          [];
      List<AIDiagnosisDescription>? descriptions = resultDTO
          .diagResultsForEachOrgan![0]
          .detectedObjects![currentAiDetectedObjectIndex]
          .descriptions;
      //遍历 descriptions 取出病灶大小
      for (AIDiagnosisDescription description in descriptions!) {
        if (description.type == DiagnosisDescriptionEnum.LesionSize) {
          lesionSize = AIDiagnosisLesionSize.fromJson(
              jsonDecode(description.value ?? ""));
        }
      }
      keyPoints = await _queryAllKeyPoints();
      _canvasAffectedKeyPoints.clear();
      _updateCurrContoursPoints();
      _updateCurrKeyPoints();
      update(['ai_result_canvas', 'ai_result_panel', 'ai_index_tag']);
    } catch (e) {
      logger.e('load ai result failed', e);
    }
  }

  /// 更新交互层尺寸
  void _updateModifierInteractiveLayerSize() {
    frameSize = Size(currFrame.width.toDouble(), currFrame.height.toDouble());
    WidgetsBinding.instance.addPostFrameCallback((_) {
      final RenderBox box =
          framePlayerKey.currentContext!.findRenderObject() as RenderBox;
      final framePlayerSize = Size(box.size.width, box.size.height);
      _scale = min(framePlayerSize.width / frameSize.width,
          framePlayerSize.height / frameSize.height);
      aiCanvasSize = Size(frameSize.width * _scale, frameSize.height * _scale);

      /// 更新交互层尺寸
      update(["ai_result_modifier_interactive_layer"]);
    });
  }

  /// 计算带单位的病灶长度
  String _countLesionLengthWithUnit(int length) {
    String lengthStr =
        (length * _unitsPhysicalPixels).toStringAsFixed(2).toString();
    return "$lengthStr $_xUnit";
  }

  /// 更新图像物理尺度信息
  void _updateImagePhysicalSize() {
    List<VisualBase> visuals = VisualsLoader(currFrame.visuals).load();
    _unitsPhysicalPixels =
        (((visuals[0].visualAreas[0].viewport?.region.width) ?? 0) /
            currFrame.width);
    VidUsUnit targetUnit =
        visuals[0].visualAreas[0].viewport?.xUnit ?? VidUsUnit.cm;
    _xUnit = UnitDescriptionMap.getDesc(targetUnit);
  }

  /// 自动吸附闭合判断
  void _autoCloseContours() async {
    if (_canvasNewContoursPoints.length < 6) return;
    double minDistance = double.infinity;
    int nearestKeyPointIndex = -1;
    final lastPoint = _canvasNewContoursPoints.last;
    for (int i = 0; i < canvasContoursPoints.length; i++) {
      final point = canvasContoursPoints[i];
      final double distance = (point - lastPoint).distance;
      if (distance < minDistance) {
        minDistance = distance;
        nearestKeyPointIndex = i;
      }
    }
    if (minDistance < 6) {
      _canvasPenModeKeyPointIndexes.add(nearestKeyPointIndex);
      _canvasNewContoursPoints.add(canvasContoursPoints[nearestKeyPointIndex]);
      _isDrawingNewContours = false;
      await _callContourMergeAsync();
      _updateCurrContoursPoints();
      _updateCurrKeyPoints();
    }
  }

  /// 发送请求通知后端合并轮廓
  Future<bool> _callContourMergeAsync() async {
    final ContourMergeResult result =
        await rpcHelper.rpc.aIDiagnosis.contourMergeAsync(
      ContourMergeRequest(
        token: rpcHelper.userToken,
        contourPoints: contours,
        lesionSize: lesionSize,
        drawingNewContourPoints: _convertCanvasPoints(_canvasNewContoursPoints),
      ),
    );
    contours = result.dstContours ?? [];
    lesionSize = result.dstLesionSize;
    keyPoints = await _queryAllKeyPoints();
    return true;
  }

  /// 画布坐标系转换【画布坐标系 -> 接口坐标系】
  List<AIDiagnosisPoint2D> _convertCanvasPoints(List<Offset> points) {
    List<AIDiagnosisPoint2D> result = [];
    for (Offset point in points) {
      result.add(
          AIDiagnosisPoint2D(x: point.dx ~/ _scale, y: point.dy ~/ _scale));
    }
    return result;
  }

  /// 关键点坐标转换【接口坐标系 -> 画布坐标系】同时更新横纵比例线段下标
  List<Offset> _convertKeyPoints(List<DiagnosisKeyPointDTO> points) {
    List<Offset> result = [];
    List<int> pointIndexes = List.generate(4, (_) => 0);
    for (int i = 0; i < points.length; i++) {
      final point = points[i];
      if (point.point == null) continue;
      result.add(Offset(point.point!.x.toDouble() * _scale,
          point.point!.y.toDouble() * _scale));
      if (point.type != DiagnosisKeyPointType.OtherKeyPoints) {
        switch (point.type) {
          case DiagnosisKeyPointType.HorizontalPointLeft:
            pointIndexes[0] = i;
            break;
          case DiagnosisKeyPointType.HorizontalPointRight:
            pointIndexes[1] = i;
            break;
          case DiagnosisKeyPointType.VerticalPointUp:
            pointIndexes[2] = i;
            break;
          case DiagnosisKeyPointType.VerticalPointDown:
            pointIndexes[3] = i;
            break;
          default:
        }
      }
    }
    _canvasLesionSizePointsIndexes = pointIndexes;
    _updateLesionSizeAndRatio();
    return result;
  }

  /// 坐标转换【接口坐标系 -> 画布坐标系】
  List<Offset> _convertPoints(List<AIDiagnosisPoint2D> points) {
    List<Offset> result = [];
    for (AIDiagnosisPoint2D point in points) {
      result.add(
          Offset(point.x.toDouble() * _scale, point.y.toDouble() * _scale));
    }
    return result;
  }

  ///  获取ai结果相关枚举集合
  Future<void> _getDiagnosisEnumItemsAsync() async {
    final getDiagnosisEnumItems =
        await rpcHelper.rpc.aIDiagnosis.getDiagnosisEnumItemsAsync(
      GetDiagnosisEnumItemsRequest(
        token: rpcHelper.userToken,
      ),
    );
    _diagnosisEnumItems = getDiagnosisEnumItems.source ?? [];
  }

  void _initData() {
    update(["ai_result_modifier"]);
  }

  /// 在拖拽模式下触发拖拽事件【每隔100ms触发一次】
  void _onDragModeCallDragFunction(Offset pos) async {
    AIDiagnosisPoint2D startPoint = AIDiagnosisPoint2D(
        x: _dragStartPoint.dx ~/ _scale, y: _dragStartPoint.dy ~/ _scale);
    AIDiagnosisPoint2D endPoint =
        AIDiagnosisPoint2D(x: pos.dx ~/ _scale, y: pos.dy ~/ _scale);
    final bool success = await _queryDragResult(startPoint, endPoint);
    if (success) {
      _updateCurrKeyPoints();
      _updateCurrContoursPoints();
      _updateCurrAffectedKeyPoints();
      update(["ai_result_canvas"]);
    }
  }

  /// 在拖拽模式下，通过鼠标位置更新高亮的关键点下标【每隔100ms触发一次】
  void _onDragModeCallHoverFunction(Offset localPosition) async {
    final mousePos = AIDiagnosisPoint2D(
        x: localPosition.dx ~/ _scale, y: localPosition.dy ~/ _scale);
    affectedKeyPointIndexes = await _queryAffectedKeyPoints(mousePos);
    _updateCurrAffectedKeyPoints();
    update(["ai_result_canvas"]);
  }

  /// 在画轮廓模式下触发拖拽事件
  void _onPenModeCallDragFunction(Offset pos) async {
    if (!_isDrawingNewContours) return;
    // 点间距【疏密程度】
    const double pointDistance = 8;
    final double distance = (pos - _canvasNewContoursPoints.last).distance;
    if (distance >= pointDistance) {
      int numPointsToInsert = (distance / pointDistance).ceil() - 1; // 需要插入的点数
      for (int i = 0; i < numPointsToInsert; i++) {
        double t = (i + 1) / (numPointsToInsert + 1);
        Offset interpolatedPoint = Offset(
          _canvasNewContoursPoints.last.dx +
              t * (pos.dx - _canvasNewContoursPoints.last.dx),
          _canvasNewContoursPoints.last.dy +
              t * (pos.dy - _canvasNewContoursPoints.last.dy),
        );
        _canvasNewContoursPoints.add(interpolatedPoint);
      }
      _canvasNewContoursPoints.add(pos);
      update(["ai_result_canvas"]);
    }
    _autoCloseContours();
  }

  /// 在画轮廓模式下，通过鼠标位置更新最近的关键点【每隔10ms触发一次】
  void _onPenModeCallHoverFunction(Offset localPosition) async {
    double minDistance = double.infinity;
    int nearestKeyPointIndex = -1;
    for (int i = 0; i < canvasContoursPoints.length; i++) {
      final point = canvasContoursPoints[i];
      final double distance = (point - localPosition).distance;
      if (distance < minDistance) {
        minDistance = distance;
        nearestKeyPointIndex = i;
      }
    }
    _canvasPenModeKeyPointIndexes.clear();
    if (minDistance < 10) {
      _canvasPenModeKeyPointIndexes.add(nearestKeyPointIndex);
    }
    update(["ai_result_canvas"]);
  }

  /// 根据鼠标位置查询受影响的关键点
  Future<List<int>> _queryAffectedKeyPoints(AIDiagnosisPoint2D mousePos) async {
    try {
      final List<int> result =
          await rpcHelper.rpc.aIDiagnosis.affectedKeyPointsByDragActionAsync(
        AffectedKeyPointsByDragActionRequest(
          token: rpcHelper.userToken,
          keyPoints: keyPoints,
          mousePoint: mousePos,
        ),
      );
      // print(result);
      return result;
    } catch (e) {
      return [];
    }
  }

  /// 查询所有关键点【需要先存好contours和lesionSize】
  Future<List<DiagnosisKeyPointDTO>> _queryAllKeyPoints() async {
    try {
      final List<DiagnosisKeyPointDTO> result =
          await rpcHelper.rpc.aIDiagnosis.getKeyPointsOfContourAsync(
        GetKeyPointsOfContourRequest(
          token: rpcHelper.userToken,
          contours: contours,
          lesionSize: lesionSize,
        ),
      );
      return result;
    } catch (e) {
      return [];
    }
  }

  /// 查询拖拽结果集合【需要先存好 contoursOnDragStart 和 keyPointsOnDragStart】
  Future<bool> _queryDragResult(
      AIDiagnosisPoint2D startPoint, AIDiagnosisPoint2D endPoint) async {
    try {
      final ContourAndKeyPointsAfterDragResult result =
          await rpcHelper.rpc.aIDiagnosis.contourAndKeyPointsAfterDragAsync(
        ContourAndKeyPointsAfterDragRequest(
          token: rpcHelper.userToken,
          contours: contoursOnDragStart,
          keyPoints: keyPointsOnDragStart,
          startPoint: startPoint,
          endPoint: endPoint,
        ),
      );
      keyPoints = result.dstKeyPoints ?? [];
      contours = result.dstContours ?? [];
      affectedKeyPointIndexes = result.affectedKeyPointIndexes!;
      return true;
    } catch (e) {
      return false;
    }
  }

  // 根据病灶四个点位置横纵比参数
  void _updateLesionSizeAndRatio() {
    if (_canvasLesionSizePointsIndexes.length != 4) return;
    if (keyPoints.length < 4) return;
    final pIndexs = _canvasLesionSizePointsIndexes;
    final p1 = keyPoints[pIndexs[0]].point!;
    final p2 = keyPoints[pIndexs[1]].point!;
    final p3 = keyPoints[pIndexs[2]].point!;
    final p4 = keyPoints[pIndexs[3]].point!;

    /// 计算 p1 到 p2 的像素距离 更新到 _horizontalLengthInPixel
    /// 计算 p3 到 p4 的像素距离 更新到 _verticalLengthInPixel
    double _horizontalLength = (Offset(p1.x.toDouble(), p1.y.toDouble()) -
            Offset(p2.x.toDouble(), p2.y.toDouble()))
        .distance;
    _horizontalLengthInPixel = _horizontalLength.ceil();
    double _verticalLength = (Offset(p3.x.toDouble(), p3.y.toDouble()) -
            Offset(p4.x.toDouble(), p4.y.toDouble()))
        .distance;
    _verticalLengthInPixel = _verticalLength.ceil();
    lesionSize = _getNewLesionSize(
        [p1, p2, p3, p4], _horizontalLengthInPixel, _verticalLengthInPixel);
    // _canvasLesionSizePointsIndexes
    update(['ai_result_lesion_size', 'ai_result_lesion_ratio']);
  }

  /// [⭐ _canvasAffectedKeyPoints ] 根据当前的受影响关键点下标更新受影响关键点集
  void _updateCurrAffectedKeyPoints() {
    _canvasAffectedKeyPoints.clear();
    if (keyPoints.isEmpty) return;
    for (int i = 0; i < keyPoints.length; i++) {
      if (affectedKeyPointIndexes.contains(i)) {
        _canvasAffectedKeyPoints.add(Offset(
            keyPoints[i].point!.x.toDouble() * _scale,
            keyPoints[i].point!.y.toDouble() * _scale));
      }
    }
  }

  /// [⭐ _canvasContoursPoints ] 更新当前轮廓点
  void _updateCurrContoursPoints() {
    _canvasContoursPoints = _convertPoints(contours);
  }

  /// [⭐ _canvasKeyPoints ] 更新当前关键点
  void _updateCurrKeyPoints() async {
    _canvasKeyPoints = _convertKeyPoints(keyPoints);
  }
}

enum AiResultModifierMode {
  /// 拖拽
  drag,

  /// 画笔
  pen,

  /// 截图
  screenshot,
}

///存储服务扩展类
extension StorageServiceExt on StorageService {
  ///鉴权 fileName 为空则接口报错，所以此处设置一个默认值
  Future<StorageServiceSettingDTO> getAuth({
    String? fileName,
    bool? isRechristen,
    List<DataItemDTO>? urlParams,
    List<DataItemDTO>? headerParams,
    String? requestMethod,
    required String userToken,
  }) async {
    try {
      final result = await getAuthorizationAsync(FileServiceRequest(
        token: userToken,
        fileName: fileName ?? "dat",
        isRechristen: isRechristen ?? true,
        urlParams: urlParams,
        headerParams: headerParams,
        requestMethod: requestMethod,
      ));
      return result;
    } catch (e) {
      return StorageServiceSettingDTO();
    }
  }

  ///文件上传（UInt8List）
  Future<String?> uploadUint8List(Uint8List buffer, String name, String token,
      [bool? isRechristen]) async {
    try {
      var nameInfos = name.split('.');
      final auth = await getAuth(
        fileName: nameInfos.last,
        isRechristen: isRechristen,
        userToken: token,
      );
      Map<String, String> params = {};
      params['Authorization'] = auth.authorization!;
      params['ContentType'] = auth.contentType!;
      final response = await http
          .put(
            Uri.parse(auth.storageUrl!),
            body: buffer,
            headers: params,
          )
          .timeout(
            const Duration(seconds: 30),
          );
      if (response.statusCode == 200) {
        return auth.storageUrl;
      }
    } catch (e) {
      logger.e('StorageServiceExt uploadUint8List ex:$e');
    }
    return null;
  }
}

class ImageUrls {
  /// 原始图像地址
  String aiFileToken;

  /// 缩略图地址
  String previewFileUrl;

  /// 是否已经上传
  bool isUploaded = true;

  ImageUrls({
    required this.aiFileToken,
    required this.previewFileUrl,
    this.isUploaded = true,
  });
}