import 'package:fis_common/logger/logger.dart';
import 'package:fis_i18n/i18n.dart';
import 'package:fis_jsonrpc/rpc.dart';
import 'package:fis_measure/define.dart';
import 'package:fis_measure/interfaces/process/items/item.dart';
import 'package:fis_measure/interfaces/process/items/item_metas.dart';
import 'package:fis_measure/interfaces/process/items/terms.dart';
import 'package:fis_measure/interfaces/process/items/types.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/language/measure_language.dart';
import 'package:fis_measure/process/workspace/measure_data_controller.dart';
import 'package:fis_measure/process/workspace/measure_data_helper.dart';
import 'package:fis_measure/process/workspace/measure_handler.dart';
import 'package:fis_measure/utils/prompt_box.dart';
import 'package:fis_measure/view/measure/combo_widget.dart';
import 'package:fis_measure/view/measure/measure_view_controller.dart';
import 'package:fis_measure/view/player/controller.dart';
import 'package:fis_ui/index.dart';
import 'package:fis_ui/interface/interactive_container.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:vid/us/vid_us_image.dart';

import 'custom_item_buttons/combo.dart';

/// 测量项页面
class LeftSiderSelectMeasure extends FStatefulWidget
    implements FInteractiveContainer {
  const LeftSiderSelectMeasure({Key? key}) : super(key: key);
  @override
  final String pageName = 'LeftSiderSelectMeasure';
  @override
  FState<LeftSiderSelectMeasure> createState() => LeftSiderSelectMeasureState();
}

class LeftSiderSelectMeasureState extends FState<LeftSiderSelectMeasure> {
  /// 数据
  IApplication get application => Get.find<IApplication>();
  VidPlayerController get playerController =>
      Get.find<IPlayerController>() as VidPlayerController;
  final measureHandler = Get.find<MeasureHandler>();
  final measureData = Get.find<MeasureDataController>();
  final measureMetaController = Get.find<MeasureMetaController>();

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

  /// 当前选中的测量项下标
  int activeItemIndex = 0;

  /// 当前选中的子测量项下标
  int activeChildItemIndex = 0;

  /// 上一个测量项
  int lastActiveItemIndex = 0;

  /// Styles
  late String fontFamily;
  static const Color buttonBackgroundColor = Color.fromRGBO(70, 70, 70, 1);
  static const Color buttonBorderColor = Color.fromRGBO(124, 124, 124, 1);
  static const Color buttonBorderHighlight = Color.fromRGBO(124, 124, 124, 1);
  static const Color buttonTextColor = Colors.white;
  static const Color childButtonHighlight = Color.fromRGBO(84, 144, 249, 1);
  static const Color childContainerBackground = Color.fromRGBO(60, 60, 60, 1);
  static const double buttonBorderHighlightWidth = 1.0;

  /// 触发测量项选中事件
  void selectItem(int selectIndex) {
    if (selectIndex == activeItemIndex) return;
    final itemMeta = measureData.curItemMetaList[selectIndex];
    if (itemMeta.buyStatus == WorkingItemStatusEnum.Unpaid) {
      PromptBox.toast("如需继续使用该测量项，请联系Vinno申请试用或购买。");
      return;
    }
    changeItem(itemMeta);
    // setState(() {
    //   activeItemIndex = selectIndex;
    //   activeChildItemIndex = 0;
    // });
  }

  /// 触发子测量项选中事件
  void selectChildItem(int selectIndex) {
    if (selectIndex == activeChildItemIndex) return;
    final item = application.activeMeasureItem!;
    if (item is ITopMeasureItem) {
      item.switchChild(selectIndex);
      activeChildItemIndex = selectIndex;
    }
    setState(() {});
  }

  /// 切换测量项
  void changeItem(ItemMeta itemMeta) {
    int itemIndex =
        measureData.curItemMetaList.indexWhere((e) => e.name == itemMeta.name);
    int childItemIndex = activeChildItemIndex;

    try {
      // IMeasureItem? item = application.activeMeasureItem;
      // if (item != null &&
      //     item.meta.name == itemMeta.name &&
      //     item is ITopMeasureItem &&
      //     item.isCrossFrameMode) {
      //   // 跨帧测量，测量项无变化时，自动切到下一个子项
      //   childItemIndex = item.workingChildIndex + 1;
      //   if (childItemIndex < item.childItems.length) {
      //     item.switchChild(childItemIndex);
      //     item.workingChildChanged.addListener(_onWorkingChildChanged);
      //     if (mounted) {
      //       setState(() {
      //         activeChildItemIndex = childItemIndex;
      //       });
      //     }
      //     return;
      //   }
      // }
      application.switchItem(itemMeta);
      final item = application.activeMeasureItem!;
      if (item is ITopMeasureItem) {
        item.switchChild(0);
        item.workingChildChanged.addListener(_onWorkingChildChanged);
      }
    } catch (e) {
      logger.e("changeItem failed", e);
    }

    if (mounted) {
      setState(() {
        activeItemIndex = itemIndex;
        activeChildItemIndex = childItemIndex;
      });
    }
  }

  /// 子测量项变化事件监听
  void _onWorkingChildChanged(sender, int e) {
    setState(() {
      activeChildItemIndex = e;
    });
  }

  void _onItemMetaListChanged(Object s, dynamic e) {
    try {
      if (e != null) {
        setState(() {});
      }
    } catch (e) {
      debugPrint("ItemMetaListChanged fail " + e.toString());
    }
  }

  /// 首帧加载完成事件监听： 获取当前图像的测量项，从第一帧取
  void _onFirstFrameLoaded(Object sender, VidUsImage e) async {
    if (!mounted) return;
    _getMeasureItemsList(e);
    _getAnnotationList();
  }

  //初始化时尝试加载第一项测量项（如果有的话）
  void _loadFirstItem() {
    if (measureData.curItemMetaList.isNotEmpty) {
      if (_checkAndHostCrossFrameMeasureItem()) {
        return;
      }
      final itemMeta = measureData.curItemMetaList.first;
      changeItem(itemMeta);
      // setState(() {
      //   activeItemIndex = 0;
      //   activeChildItemIndex = 0;
      // });
    }
  }

  /// 注释获取
  void _getAnnotationList() async {
    List<String> annotationList = [];
    var measureCommentItemResult =
        await MeasureDataHelper.getCommentsByApplicationAsync(
      application.applicationName,
      application.categoryName,
    );
    measureData.measureCommentItemResult =
        measureCommentItemResult?.commentItems ?? [];
    measureCommentItemResult?.commentItems?.forEach((element) {
      annotationList.add(element.text ?? '');
    });
    measureData.annotationList = annotationList;
    measureHandler.onAnnotationsLoaded();
  }

  void _getMeasureItemsList(VidUsImage e) async {
    List<String> getModes = [];
    for (var element in e.visuals[0].modes) {
      getModes.add(element.type.toString().split('.')[1]);
    }
    measureData.applicationModes = e.visuals[0].modes;
    measureData.currentMode = e.visuals[0].modes.first.type.name;
    var measureModeSelection = MeasureModeSelection(
      application.applicationName,
      application.categoryName,
      application.isThirdPart ? ['TPPTissue'] : getModes,
    );
    measureHandler.measureModeChanged = measureModeSelection;
    var measureApplicationDTO =
        await MeasureDataHelper.getMeasureApplication(measureModeSelection);
    if (measureApplicationDTO != null) {
      measureData.measureApplicationVersion =
          measureApplicationDTO.version ?? '';
      measureData.availableModes = measureApplicationDTO.availableModes ?? [];
      // final lvdMassItem = measureData.availableModes.first.availableGroups!
      //     .first.availableFolders!.first.availableItems!
      //     .where((e) => e.measureTypeName == "LvdMass")
      //     .first;
      measureData.availableModes.first.availableGroups!.first.availableFolders!
          .first.workingItemNames!
          .add("LV Mass");
      if (application.isThirdPart) {
        measureData.currentMode = 'TPPTissue';
      }
      measureMetaController.setAvailableModes(measureData.currentMode);
      setState(() {});
    }
  }

  /// 测量项列表变化事件监听
  void _onCurItemMetaListChanged(sender, e) {
    if (measureData.curItemMetaList.isNotEmpty) {
      if (_checkAndHostCrossFrameMeasureItem()) {
        return;
      }

      changeItem(measureData.curItemMetaList[0]);
    }
    // setState(() {
    //   activeItemIndex = 0;
    //   activeChildItemIndex = 0;
    // });
  }

  bool _checkAndHostCrossFrameMeasureItem() {
    final crossCxt = application.crossFrameContext;
    if (crossCxt != null && !crossCxt.isOver) {
      final activeItem = application.activeMeasureItem;
      if (activeItem != null &&
          activeItem is ITopMeasureItem &&
          activeItem.isCrossFrameMode) {
        // 跨帧时&当前是跨帧测量项，则保持此测量项
        changeItem(activeItem.meta);
        return true;
      }
    }
    return false;
  }

  /// 是否显示测量项翻译事件变化
  void _onShowItemTransStateChanged(_, e) {
    setState(() {});
  }

  /// 鼠标右键结束测量事件【即切换到空测量项】,此时缓存被结束的测量项，如果再次收到右击事件，恢复被结束的测量项
  void _onRightClickFinishMeasure(_, e) {
    if (activeItemIndex == -1) {
      changeItem(measureData.curItemMetaList[lastActiveItemIndex]);
      setState(() {
        activeItemIndex = lastActiveItemIndex;
        activeChildItemIndex = 0;
      });
    } else {
      lastActiveItemIndex = activeItemIndex;
      final emptyItem = ItemMeta(
        "EmptyItem",
        measureType: MeasureTypes.Empty,
        description: "",
        outputs: [],
      );
      changeItem(emptyItem);
      setState(() {
        activeItemIndex = -1;
        activeChildItemIndex = 0;
      });
    }
  }

  @override
  void initState() {
    measureData.curItemMetaListChanged.addListener(_onCurItemMetaListChanged);
    measureData.itemMetaListChanged.addListener(_onItemMetaListChanged);
    measureData.showItemTransStateChanged
        .addListener(_onShowItemTransStateChanged);
    measureHandler.onRightClickFinishMeasure
        .addListener(_onRightClickFinishMeasure);
    WidgetsBinding.instance.addPostFrameCallback((call) {
      _loadFirstItem();
      playerController.firstFrameLoaded.addListener(_onFirstFrameLoaded);
    });
    super.initState();
  }

  @override
  dispose() {
    super.dispose();
    playerController.firstFrameLoaded.removeListener(_onFirstFrameLoaded);
    measureData.curItemMetaListChanged
        .removeListener(_onCurItemMetaListChanged);
    measureData.itemMetaListChanged.removeListener(_onItemMetaListChanged);
    measureData.showItemTransStateChanged
        .removeListener(_onShowItemTransStateChanged);
    measureHandler.onRightClickFinishMeasure
        .removeListener(_onRightClickFinishMeasure);
    final item = application.activeMeasureItem;
    if (item != null && item is ITopMeasureItem) {
      item.workingChildChanged.removeListener(_onWorkingChildChanged);
    }
  }

  @override
  FWidget build(BuildContext context) {
    fontFamily = Theme.of(context).textTheme.labelLarge!.fontFamily!;
    return buildItemsListView(measureData.curItemMetaList);
  }

  /// 构建测量项列表
  FWidget buildItemsListView(List<ItemMeta> itemMetaList) {
    return FListView(
        shrinkWrap: true,
        controller: ScrollController(),
        children: List.generate(itemMetaList.length, (i) {
          return _buildItemContainer(i);
        }));
  }

  /// 构建测量项容器
  FWidget _buildItemContainer(int itemMetaIndex) {
    final itemMeta = measureData.curItemMetaList[itemMetaIndex];
    final isActived = itemMetaIndex == activeItemIndex; // 是否选中
    final hasChildItem = itemMeta.childItems.isNotEmpty; //是否为组合测量项
    return FContainer(
        decoration: BoxDecoration(
          borderRadius: BorderRadius.circular(5),
          border: isActived && hasChildItem
              ? Border.all(
                  color: buttonBorderHighlight,
                  width: buttonBorderHighlightWidth)
              : null,
        ),
        margin: const EdgeInsets.symmetric(horizontal: 12, vertical: 5),
        child: FStack(
          children: [
            FColumn(children: [
              if (isActived && hasChildItem) ...[
                _buildItemTitle(itemMetaIndex),
                _buildChildItemContainer(itemMeta),
              ] else
                FContainer(
                  width: double.infinity,
                  child: _buildItemButton(itemMetaIndex),
                ),
            ]),
            // if (itemMeta.buyStatus != null)
            //   FPositioned(
            //     top: 0,
            //     right: 0,
            //     child: _buildItemBuyStatusName(
            //       itemMeta.buyStatus ?? WorkingItemStatusEnum.Free,
            //     ),
            //   )
          ],
        ));
  }

  // 构建测量项是否需要购买
  FWidget _buildItemBuyStatusName(WorkingItemStatusEnum buyStatus) {
    String name = "";
    Color textColor = Colors.white;

    switch (buyStatus) {
      case WorkingItemStatusEnum.Probation:
        name = i18nBook.measure.probation.t;
        textColor = Colors.yellow;
        break;
      case WorkingItemStatusEnum.Unpaid:
        name = i18nBook.measure.unpaid.t;
        textColor = Colors.red;
        break;
      case WorkingItemStatusEnum.Purchased:
        name = i18nBook.measure.purchased.t;
        textColor = childButtonHighlight;
        break;
      case WorkingItemStatusEnum.Expired:
        name = i18nBook.measure.expired.t;
        textColor = Colors.red;
        break;
      default:
        break;
    }
    if (name.isNotEmpty) {
      return QuickFWidget(
        RawChip(
            backgroundColor: textColor.withOpacity(0.8),
            label: FText(
              name,
              style: TextStyle(
                color: Colors.white,
                fontFamily: fontFamily,
                fontSize: 12,
              ),
            ),
            // isEnabled: false,//禁止点选状态
            labelPadding: const EdgeInsets.symmetric(horizontal: 4),
            shape: OutlinedBorder.lerp(
              RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(4),
              ),
              RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(4),
              ),
              0,
            )

            // padding: EdgeInsets.only(left: 10, right: 10, top: 5),
            ),
      );
    }
    return const FSizedBox();
  }

  // 构建测量项按钮
  FWidget _buildItemButton(int itemIndex) {
    final itemMeta = measureData.curItemMetaList[itemIndex];
    final transValue = measureLanguage.t('measure', itemMeta.description);
    // 非英文环境下显示中英文，否则只显示英文
    final ifShowCN = !i18nBook.isCurrentEnglish &&
        transValue != itemMeta.description &&
        measureData.measureSystemSetting.showAnnotation;
    final isActived = itemIndex == activeItemIndex;
    return FElevatedButton(
      name: itemMeta.name,
      businessParent: widget,
      onPressed: () => selectItem(itemIndex),
      child: FColumn(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          if (ifShowCN)
            FText(
              transValue,
              maxLines: 1,
              overflow: TextOverflow.ellipsis,
              style: TextStyle(
                color: isActived ? null : buttonTextColor,
                fontFamily: fontFamily,
                fontSize: 12,
              ),
            ),
          FText(
            itemMeta.description,
            style: TextStyle(
              color: isActived ? null : buttonTextColor,
            ),
          ),
        ],
      ),
      style: ElevatedButton.styleFrom(
        backgroundColor: isActived ? null : buttonBackgroundColor,
        fixedSize: const Size.fromHeight(
          50,
        ),
        side: BorderSide(
          color: isActived ? Colors.transparent : buttonBorderColor,
        ),
      ),
    );
  }

  // 构建测量项标签【用于组合测量项顶部】
  FWidget _buildItemTitle(int itemIndex) {
    final itemMeta = measureData.curItemMetaList[itemIndex];
    final transValue = measureLanguage.t('measure', itemMeta.description);
    // 非英文环境下显示中英文，否则只显示英文
    final ifShowCN = !i18nBook.isCurrentEnglish &&
        transValue != itemMeta.description &&
        measureData.measureSystemSetting.showAnnotation;
    return FContainer(
      decoration: const BoxDecoration(
        border: Border(
          bottom: BorderSide(
              color: buttonBorderHighlight, width: buttonBorderHighlightWidth),
        ),
      ),
      child: FSizedBox(
        height: 50,
        width: double.infinity,
        child: FColumn(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            if (ifShowCN)
              FText(
                transValue,
                maxLines: 1,
                overflow: TextOverflow.ellipsis,
                style: TextStyle(
                  color: buttonTextColor,
                  fontFamily: fontFamily,
                  fontSize: 12,
                ),
              ),
            FText(
              itemMeta.description,
              style: const TextStyle(
                color: buttonTextColor,
              ),
            ),
          ],
        ),
      ),
    );
  }

  /// 子测量项容器
  FWidget _buildChildItemContainer(ItemMeta itemMeta) {
    final activeName = itemMeta.description;
    final isSpecial = MeasurespecialsupportedTerms.items.contains(activeName);
    if (isSpecial) {
      //是否为特殊组合测量项
      return const SpecialItemHR();
    } else if (CustomComboItemGroup.specialItemTypes
        .contains(itemMeta.measureType)) {
      return CustomComboItemGroup(
        activeIndex: activeChildItemIndex,
        businessParent: widget,
        itemMeta: itemMeta,
        onChildClick: (int childItemIndex) {
          selectChildItem(childItemIndex);
        },
      );
    } else {
      return FContainer(
        decoration: const BoxDecoration(
          color: childContainerBackground,
          borderRadius: BorderRadius.only(
              bottomLeft: Radius.circular(5), bottomRight: Radius.circular(5)),
        ),
        padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 5),
        child: FColumn(
          children: (itemMeta.childItems)
              .asMap()
              .entries
              .map(
                (e) => _buildChildItemButton(
                  e.value,
                  e.key,
                ),
              )
              .toList(),
        ),
      );
    }
  }

  // 构建子测量项按钮
  FWidget _buildChildItemButton(ItemMeta itemMeta, int childItemIndex) {
    final isActived = childItemIndex == activeChildItemIndex;
    return FContainer(
        width: double.infinity,
        margin: const EdgeInsetsDirectional.all(5),
        child: FElevatedButton(
          businessParent: widget,
          name: "selectChildItemIdnex:$childItemIndex",
          onPressed: () {
            selectChildItem(childItemIndex);
          },
          child: FText(
            itemMeta.description,
          ),
          style: ElevatedButton.styleFrom(
            backgroundColor: isActived ? null : buttonBackgroundColor,
            side: BorderSide(
              color: isActived ? Colors.transparent : buttonBorderColor,
            ),
          ),
        ));
  }
}