import 'dart:async';
import 'package:fis_i18n/i18n.dart';
import 'package:fis_measure/interfaces/process/player/play_controller.dart';
import 'package:fis_measure/interfaces/process/workspace/application.dart';
import 'package:fis_measure/process/workspace/measure_3d_view_controller.dart';
import 'package:fis_measure/utils/prompt_box.dart';
import 'package:fis_measure/view/measure/carotid_measure_tool.dart';
import 'package:fis_ui/index.dart';
import 'package:flutter/material.dart' hide Image;
import 'package:flutter/services.dart';
import 'package:get/get.dart';
import 'package:vid/us/vid_us_image.dart';
import 'package:webviewx/webviewx.dart';
import 'dart:convert';
import 'package:fis_measure/utils/js_utils.dart'
    if (dart.library.io) 'package:fis_measure/utils/js_utils4native.dart'
    if (dart.library.html) 'package:fis_measure/utils/js_utils.dart';

/// [Carotid] 🚧webview 下 initPage 方法需要 i18n 由 Flutter 触发
/// [Carotid] ✅启用 3D 后的亮度对比度需要通知 Shell 计算
/// [Carotid] ✅需要接入 webview 控制器
/// [Carotid] ✅需要判断是否为壳子，浏览器环境无 3D 操作
///
class Measure3DView extends StatefulWidget implements FWidget {
  const Measure3DView({
    Key? key,
  }) : super(key: key);

  @override
  _Measure3DViewState createState() => _Measure3DViewState();
}

class _Measure3DViewState extends State<Measure3DView> {
  late WebViewXController webviewController;
  final measure3DViewController = Get.find<Measure3DViewController>();
  final application = Get.find<IApplication>();
  Size get screenSize => MediaQuery.of(context).size;
  String documentFromAsset = "<h2> Hello webviewX ! <h2>";

  Future<String> _preloadHTML() async {
    documentFromAsset = await _loadHTMLFromAssets(
      'assets/webview/3DMeasurePage.html',
    );
    return Future.value("");
  }

  Future<String> _loadHTMLFromAssets(String path) async {
    try {
      return await DefaultAssetBundle.of(context).loadString(path);
    } catch (e) {
      return Future.error(e);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        Expanded(
          child: LayoutBuilder(
              builder: (BuildContext context, BoxConstraints constraints) {
            return _buildWebViewX(constraints);
          }),
        ),
        SizedBox(
          height: 30,
          child: Container(
            child: measure3DViewController.enable2DMeasure
                ? ElevatedButton(
                    onPressed: () {
                      _changeTo2DMeasure();
                    },
                    child: Text(i18nBook.measure.measureSpecifiedFace.t),
                  )
                : Container(),
          ),
        ),
      ],
    );
  }

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

    measure3DViewController.onShellLoadedMdlFile.addListener(_mdlFileLoaded);
    measure3DViewController.adjustPlaneImage.addListener(_adjustedImage);
  }

  @override
  void dispose() {
    measure3DViewController.onShellLoadedMdlFile.removeListener(_mdlFileLoaded);
    measure3DViewController.adjustPlaneImage.removeListener(_adjustedImage);
    webviewController.dispose();
    super.dispose();
  }

  Widget _buildWebViewX(BoxConstraints constraints) {
    return FutureBuilder<String>(
        future: _preloadHTML(),
        builder: (context, AsyncSnapshot<String> snapshot) {
          if (snapshot.hasData) {
            return WebViewX(
              key: const ValueKey('webviewx'),
              initialContent: documentFromAsset,
              initialSourceType: SourceType.html,
              height: constraints.maxHeight,
              width: constraints.maxWidth,
              onWebViewCreated: (controller) => webviewController = controller,
              onPageStarted: (src) =>
                  debugPrint('A new page has started loading'),
              onPageFinished: (src) {
                debugPrint('The page has finished loading');
                _setSurface().then((value) => _notifyShellToLoad());
              },
              jsContent: {
                EmbeddedJsContent(
                    js: "var isCurrentChinese = ${i18nBook.isCurrentChinese}")
              },
              dartCallBacks: {
                DartCallback(
                    name: 'Dart_getClipPlaneData',
                    callBack: (msg) => callShellGetClipPlaneData(msg)),
                DartCallback(
                  name: 'Dart_deleteClipImageData',
                  callBack: (msg) => _deleteClipImageData(msg),
                ),
                DartCallback(
                  name: "Dart_deleteAllClipImageData",
                  callBack: (msg) => _deleteAllClipImageData(msg),
                ),
                DartCallback(
                  name: "Dart_meshActiveStatusChanged",
                  callBack: (boolValue) => _meshActiveStatusChanged(boolValue),
                ),
                DartCallback(
                  name: "Dart_aiClipStateCallBack",
                  callBack: (boolValue) => _aiClipStateCallBack(boolValue),
                ),
                DartCallback(
                  name: "Dart_getVesselClipPlanePoints",
                  callBack: (msg) => callShellGetVesselClipPlanePoints(msg),
                ),
              },
              webSpecificParams: const WebSpecificParams(
                printDebugInfo: true,
              ),
              mobileSpecificParams: const MobileSpecificParams(
                androidEnableHybridComposition: true,
              ),
              navigationDelegate: (navigation) {
                debugPrint(navigation.content.sourceType.toString());
                return NavigationDecision.navigate;
              },
            );
          } else {
            return const Center(child: CircularProgressIndicator());
          }
        });
  }

  void _deleteClipImageData(String msg) {
    // debugPrint("webview 触发 Dart_deleteClipImageData :$msg");
    callShellMethod('deleteClipImageData', [msg]);
  }

  void _deleteAllClipImageData(msg) {
    // debugPrint("webview 触发 Dart_deleteAllClipImageData :$msg");
    callShellMethod('deleteAllClipImageData', []);
  }

  ///  [Carotid] ✅触发激活状态更新，来判断是否显示 [切换2D测量] 按钮
  void _meshActiveStatusChanged(bool res) {
    debugPrint("webview 触发 Dart_meshActiveStatusChanged :$res");
    callShellMethod('meshActiveStatusChanged', [res]);
    measure3DViewController.enable2DMeasure = res;
    setState(() {});
  }

  /// AI 切割成功的回调
  void _aiClipStateCallBack(bool success) async {
    if (success) {
      measure3DViewController.needAutoDetection = true;
      // callShellMethod('aiClipStateCallBack', [res]);
      measure3DViewController.resetTone();
    }
  }

  ///[Carotid] ✅初始化 mesh 长宽高可以由两张小图计算得到，设置标准宽度用于缩放切面
  Future<void> _setSurface() async {
    final faceImages = measure3DViewController.carotidResult.surfaceImageList;
    if (faceImages!.length == 6) {
      final first = await loadImageSize(faceImages[0]);
      final last = await loadImageSize(faceImages[5]);
      final width = (last.width - 1).toInt();
      final height = (last.height - 1).toInt();
      final depth = (first.height - 1).toInt();
      measure3DViewController.stdSize =
          Size(width.toDouble(), depth.toDouble());
      try {
        await webviewController.callJsMethod(
            'changeSurface', [width, height, depth, ...faceImages]);
      } catch (e) {
        debugPrint("callmethod fail " + e.toString());
      }
    }
  }

  /// [Carotid] ✅获取到图像并进入 2D 测量页
  Future<void> _changeTo2DMeasure() async {
    try {
      String res =
          await webviewController.callJsMethod('getCurrentClipInformation', []);
      callShellSwitchMeasureMode(
              res, measure3DViewController.curImageAdjustPara)
          .callMethod("then", [
        (res) async {
          VidUsImage vidUsImage = VidUsImage.fromBytes(base64Decode(res));

          /// [Carotid] ✅写入单帧缓存
          final playerController = Get.find<IPlayerController>();
          playerController.pause();

          measure3DViewController.image4Measure = vidUsImage;
          measure3DViewController.changeModeTo2DMeasure();
          application.clearRecords();
          if (measure3DViewController.needAutoDetection) {
            Future.delayed(400.milliseconds, () {
              /// 内膜检测
              final intimaDetection = carotidMeasureApplicationList.last;
              application.switchItem(intimaDetection);
              PromptBox.snackbar(i18nBook.measure.autoRunIntimaDetection.t,
                  duration: const Duration(milliseconds: 1500),
                  title: i18nBook.common.tip.t,
                  textColor: Colors.white,
                  backgroundColor: Colors.black.withOpacity(0.7));
              Future.delayed(400.milliseconds, () {
                final firstItem = carotidMeasureApplicationList.first;
                application.switchItem(firstItem);
              });
            });
            measure3DViewController.needAutoDetection = false;
          }
        }
      ]);
    } catch (e) {
      debugPrint("callmethod fail " + e.toString());
    }
  }

  /// [Carotid] ✅_mdlFileLoaded 由壳子触发，通知 webview 模型已加载，显示操作按钮
  void _mdlFileLoaded(Object s, dynamic e) {
    try {
      webviewController.callJsMethod('mdlFileLoaded', ["Carotid", "True"]);
    } catch (e) {
      debugPrint("callmethod fail " + e.toString());
    }
  }

  /// [Carotid] ✅_adjustedImage 由 Flutter 触发，通知 webview 更新所有的面数据
  void _adjustedImage(Object s, ImageAdjustPara e) {
    try {
      webviewController.callJsMethod(
          'adjustedImageByFlutter', [e.sharpness, e.brightness, e.contrast]);
    } catch (e) {
      debugPrint("callmethod fail " + e.toString());
    }
  }

  /// webview 初始化完成后通知壳子切换至对应模型文件
  Future<void> _notifyShellToLoad() async {
    measure3DViewController.notifyShellSetCurModel();
  }
}