import { DC, EntityShape } from "@/deconstruction";
import {
  computed,
  EmitFn,
  isRef,
  markRaw,
  nextTick,
  onUnmounted,
  reactive,
  ref,
  Ref,
  shallowReactive,
  shallowRef,
  watch,
  watchEffect,
} from "vue";
import { useAutomaticData } from "./use-automatic-data";
import { useCurrentZIndex, useZIndex } from "./use-layer";
import {
  useAnimationMouseStyle,
  useMouseShapesStatus,
} from "./use-mouse-status";
import { components, DrawItem, ShapeType } from "../components";
import { useMatCompTransformer, useLineTransformer } from "./use-transformer";
import { useGetShapeCopyTransform } from "./use-copy";
import { asyncTimeout, copy, mergeFuns, onlyId } from "@/utils/shared";
import { Shape } from "konva/lib/Shape";
import { Transform } from "konva/lib/Util";
import {
  mergeDescribes,
  PropertyDescribes,
  PropertyKeys,
} from "../html-mount/propertys";
import { useStore } from "../store";
import { globalWatch, useMountMenusFilter, useStage } from "./use-global-vars";
import { useAlignmentShape } from "./use-alignment";
import { useViewerTransform } from "./use-viewer";
import { usePause } from "./use-pause";
import { useGlobalDescribes } from "./use-group";
import { ui18n } from "@/lang";

type Emit<T> = EmitFn<{
  updateShape: (value: T) => void;
  addShape: (value: T) => void;
  delShape: () => void;
}>;

export const useComponentMenus = <T extends DrawItem>(
  shape: Ref<DC<EntityShape> | undefined>,
  data: Ref<T>,
  emit: Emit<T>,
  alignment?: (data: T, mat: Transform) => void,
  copyHandler?: (transform: Transform, data: T) => T
) => {
  const operateMenus: Array<{
    icon?: any;
    label?: string;
    hide?: boolean,
    handler: () => void;
  }> = shallowReactive([]);

  // 置顶 置底
  const currentZIndex = useCurrentZIndex();
  operateMenus.push(
    reactive({
      label: computed(() => (data.value.lock ? ui18n.t('sys.unlock') : ui18n.t('sys.lock'))) as any,
      handler() {
        data.value.lock = !data.value.lock;
        emit("updateShape", { ...data.value });
      },
    }),
    reactive({
      label: ui18n.t('sys.hide'),
      hide: true,
      handler() {
        data.value.hide = true;
        emit("updateShape", { ...data.value });
      },
    })
    // {
    //   label: `上移`,
    //   icon: Top,
    //   handler() {
    //     data.value.zIndex += 1;
    //     emit("updateShape", { ...data.value });
    //   },
    // },
    // {
    //   label: `下移`,
    //   icon: Bottom,
    //   handler() {
    //     data.value.zIndex -= 1;
    //     emit("updateShape", { ...data.value });
    //   },
    // },
  );

  if (alignment) {
    const [alignmentShape] = useAlignmentShape(shape);
    operateMenus.push({
      label: ui18n.t('sys.alignment'),
      async handler() {
        const mat = await alignmentShape();
        alignment(data.value, mat);
        emit("updateShape", copy({ ...data.value }));
        // let ndata = { ...data.value, id: onlyId() }
        // emit('addShape', ndata)
        // emit('delShape')
      },
    });
  }

  if (copyHandler) {
    const getCopyTransform = useGetShapeCopyTransform(shape);
    const status = useMouseShapesStatus();
    const stage = useStage();
    operateMenus.push({
      label: ui18n.t('sys.copy'),
      async handler() {
        const transform = getCopyTransform();
        const copyData = copyHandler(
          transform,
          JSON.parse(JSON.stringify(data.value)) as T
        );
        copyData.id = onlyId();
        emit("addShape", copyData);
        status.actives = [];
        await asyncTimeout(100);
        const $stage = stage.value?.getNode();
        if (!$stage) return;
        const $shape = $stage.findOne<Shape>(`#${copyData.id}`);
        if ($shape) {
          status.actives = [$shape];
        }
      },
    });
  }
  operateMenus.push(
    {
      label: ui18n.t('sys.ztop'),
      handler() {
        data.value.zIndex = currentZIndex.max + 1;
        emit("updateShape", { ...data.value });
      },
    },
    {
      label: ui18n.t('sys.zbot'),
      handler() {
        data.value.zIndex = currentZIndex.min - 1;
        emit("updateShape", { ...data.value });
      },
    }
  );
  if (!data.value.disableDelete) {
    operateMenus.push({
      label: ui18n.t('sys.del'),
      handler() {
        emit("delShape");
      },
    });
  }

  return operateMenus;
};

export type UseComponentStatusProps<
  T extends DrawItem,
  S extends EntityShape
> = {
  emit: Emit<T>;
  type?: ShapeType;
  props: { data: T };
  alignment?: (data: T, mat: Transform) => void;
  getMouseStyle: any;
  defaultStyle: any;
  propertys: PropertyKeys;
  selfData?: boolean;
  debug?: boolean;
  noJoinZindex?: boolean;
  noOperateMenus?: boolean;
  transformType?: "line" | "mat" | "custom";
  customTransform?: (
    callback: () => void,
    shape: Ref<DC<S> | undefined>,
    data: Ref<T>
  ) => void;
  getRepShape?: () => Shape;
  copyHandler?: (transform: Transform, data: T) => T;
};

export const useComponentDescribes = <T extends { id: string }>(
  data: Ref<T>,
  propertys: PropertyKeys,
  defaultStyle: any
) => {
  const store = useStore();
  const id = computed(() => data.value.id);
  const type = computed(() => id.value && store.getType(id.value));
  const initDescs = mergeDescribes(data, defaultStyle, propertys || []);
  const { getFilter } = useMountMenusFilter();
  const gdescs = useGlobalDescribes();

  let descs = ref(initDescs);
  watchEffect(() => {
    const iDescs =
      type.value && id.value
        ? getFilter(type.value, id.value)(initDescs)
        : initDescs;
    descs.value = Object.fromEntries(
      Object.entries(iDescs).sort(
        ([_a, a], [_b, b]) => (b.sort || -1) - (a.sort || -1)
      )
    ) as PropertyDescribes;
  });
  watchEffect((onCleanup) => {
    gdescs.set(data.value, descs.value);
    onCleanup(() => {
      gdescs.del(data.value.id);
    });
  });
  watch(
    descs,
    (descs) => {
      for (const key in descs) {
        const initProps = descs[key].props;
        watchEffect(() => {
          if (!type.value) return;
          const getPredefine = components[type.value].getPredefine;
          const predefine =
            getPredefine && (getPredefine as any)(key as keyof DrawItem);
          if (!predefine) return;

          if (initProps) {
            descs[key].props = { ...initProps, ...predefine };
          } else {
            descs[key].props = predefine;
          }
        });
      }
    },
    { immediate: true }
  );
  return descs;
};

export const useComponentStatus = <S extends EntityShape, T extends DrawItem>(
  args: UseComponentStatusProps<T, S>
) => {
  const shape = shallowRef<DC<S>>();
  watchEffect(
    () => {
      if (shape.value) {
        markRaw(shape.value);
      }
    },
    { flush: "sync" }
  );
  const data = useAutomaticData(
    () => args.props.data,
    (data) => (args.selfData ? data : copy(data))
  );
  const [style, pause, resume] = useAnimationMouseStyle({
    data: data,
    shape,
    getMouseStyle: args.getMouseStyle,
  }) as any;

  watchEffect(() => {
    if (data.value.lock) {
      pause();
    } else {
      resume();
    }
  });

  if (args.transformType === "line") {
    useLineTransformer(
      shape as any,
      data as any,
      (newData) => args.emit("updateShape", newData as T),
      args.getRepShape as any
    );
  } else if (args.transformType === "mat") {
    useMatCompTransformer(shape, data as any, (nData) =>
      args.emit("updateShape", nData as any)
    );
  } else if (args.transformType === "custom" && args.customTransform) {
    args.customTransform(
      () => args.emit("updateShape", data.value as any),
      shape,
      data
    );
  }
  if (!args.noJoinZindex) {
    useZIndex(shape, data);
  }

  return {
    data,
    style,
    tData: computed(() => {
      const tData = { ...args.defaultStyle, ...data.value };
      if (style) {
        Object.assign(tData, style.value);
      }
      return tData;
    }),
    shape,
    operateMenus: args.noOperateMenus
      ? []
      : useComponentMenus(
          shape,
          data,
          args.emit,
          args.alignment,
          args.copyHandler
        ),
    describes: useComponentDescribes(
      data,
      args.propertys || [],
      args.defaultStyle
    ),
  };
};

export const useGetShapeBelong = () => {
  const store = useStore();
  return (shape: EntityShape) => {
    let curId = shape.id();
    let id: string;
    let item: DrawItem;
    let type: ShapeType;
    do {
      id = shape.id();
      item = store.getItemById(id)!;
      type = store.getType(id)!;
      if (item && type) {
        break;
      }
    } while ((shape = shape.parent as any));

    return item ? { item, isSelf: curId === id, type, id, curId } : null;
  };
};

export const useGetComponentData = () => {
  const store = useStore();
  const getShapeBelong = useGetShapeBelong();

  return (shape: Ref<EntityShape | undefined> | EntityShape | undefined) =>
    computed(() => {
      shape = isRef(shape) ? shape.value : shape;
      if (!shape?.id()) return;
      let item: any = store.getItemById(shape.id());
      if (!item) {
        const belong = getShapeBelong(shape);
        if (belong && !belong.isSelf) {
          const getter = components[belong.type].childrenDataGetter;
          let parent: any;
          if (getter && (parent = store.getItemById(belong.id))) {
            item = getter(parent, belong.curId);
          }
        }
      }

      return item;
    });
};

export const useComponentsAttach = <T>(
  getter: <K extends ShapeType>(type: K, data: DrawItem<K>) => T,
  types = Object.keys(components) as ShapeType[]
) => {
  const store = useStore();
  const attachs = reactive([]) as T[];
  const cleanups = [] as Array<() => void>;

  for (const type of types) {
    cleanups.push(
      globalWatch(
        () => store.getTypeItems(type),
        (_a, _, onCleanup) => {
          const items = store.getTypeItems(type);
          if (!items) return;
          for (const item of items) {
            const attachWatchStop = watchEffect((onCleanup) => {
              const attach = getter(type, item);
              attachs.push(attach);
              onCleanup(() => {
                const ndx = attachs.indexOf(attach);
                ~ndx && attachs.splice(ndx, 1);
              });
            });
            const existsWatchStop = watchEffect(() => {
              if (!items.includes(item)) {
                attachWatchStop();
                existsWatchStop();
              }
            });
            onCleanup(() => {
              attachWatchStop();
              existsWatchStop();
            });
          }
        },
        { immediate: true, deep: true }
      )
    );
  }

  return {
    attachs,
    cleanup: mergeFuns(cleanups),
  };
};

export const useOnComponentBoundChange = () => {
  const getComponentData = useGetComponentData();
  const transform = useViewerTransform();
  const quitHooks = [] as Array<() => void>;
  const destory = () => mergeFuns(quitHooks)();

  const on = <T extends EntityShape>(
    shapes: Ref<T | T[] | undefined> | T | T[] | undefined,
    callback: (shape: T, type: "transform" | "data") => void,
    viewListener = true
  ) => {
    const $shapes = computed(() => {
      shapes = isRef(shapes) ? shapes.value : shapes;
      if (!shapes) return [];
      return Array.isArray(shapes) ? shapes : [shapes];
    });
    const update = ($shape: T, type?: "transform" | "data") => {
      if (api.isPause) return;
      callback($shape, type || "data");
    };
    const shapeListener = (shape: T) => {
      const repShape = (shape.repShape as T) || shape;
      const syncBd = () => update(repShape);
      repShape.on("transform", syncBd);
      shape.on("bound-change", syncBd);
      return () => {
        repShape.off("transform", syncBd);
        shape.off("bound-change", syncBd);
      };
    };
    const cleanups: (() => void)[] = [];
    if (viewListener) {
      cleanups.push(
        watch(transform, () =>
          $shapes.value.forEach(($shape) => update($shape, "transform"))
        )
      );
    }
    cleanups.push(
      watch(
        $shapes,
        ($shapes, _, onCleanup) => {
          const cleanups = $shapes.flatMap(($shape) => {
            let item = getComponentData($shape);
            return [
              watch(item, () => nextTick(() => update($shape, "data")), {
                deep: true,
              }),
              shapeListener($shape),
            ];
          });
          onCleanup(mergeFuns(cleanups));
        },
        { immediate: true }
      )
    );

    const onDestroy = mergeFuns(cleanups);
    quitHooks.push(onDestroy);

    return () => {
      const ndx = quitHooks.indexOf(onDestroy);
      ~ndx && quitHooks.splice(ndx, 1);
      onDestroy();
    };
  };

  const api = usePause({ destory, on });
  onUnmounted(destory);
  return api;
};