import {
  AnimationModel,
  AnimationModelAction,
  AnimationModelFrame,
  AnimationModelPath,
  AnimationModelSubtitle,
} from "@/api";
import {
  AnimationGroup,
  AnimationModel3D,
  AnimationModelAction3D,
  AnimationModelFrame3D,
  AnimationModelPath3D,
  SDK,
  sdk as _sdk,
} from "../sdk";
import { computed, nextTick, reactive, ref, watch, watchEffect } from "vue";
import { ams } from "@/store/animation";
import { mergeFuns } from "@/components/drawing/hook";
import { getPathNode } from "./path";
import { diffArrayChange, mount } from "@/utils";
import { Pos } from "@/utils/event";
import Subtitle from "@/components/subtitle/index.vue";
import { Size } from "@/components/drawing/dec";

export let animationGroup: AnimationGroup;
export const getAMKey = (am: AnimationModel) => am.key || am.id;

export const amMap: Record<
  string,
  {
    am?: AnimationModel3D;
    frames: Record<string, AnimationModelFrame3D>;
    actions: Record<string, AnimationModelAction3D>;
    paths: Record<string, AnimationModelPath3D>;
    subtitles: Record<string, () => void>;
  }
> = reactive({});

export const addAM = (data: AnimationModel): Promise<AnimationModel3D> => {
  const key = getAMKey(data);
  const stopLoad = watch(
    () => {
      const exixts = ams.value.some((am) => getAMKey(am) === key);
      return [key, exixts] as const;
    },
    ([key, exixts]) => {
      if (!exixts) {
        const des = amMap[key];
        if (!des) return;
        Object.values(des.frames || {}).forEach((frame) => frame.destroy());
        Object.values(des.actions || {}).forEach((frame) => frame.destroy());
        Object.values(des.paths || {}).forEach((frame) => frame.destroy());
        des.am?.destroy();
        delete amMap[key];
      } else if (!amMap[key]) {
        amMap[key] = {
          frames: {},
          actions: {},
          paths: {},
          subtitles: {},
        };
        const am = animationGroup.addAnimationModel(data);
        am.bus.on("loadDone", () => {
          amMap[key].am = am;
        });
      }
    },
    { immediate: true }
  );

  const stopAttrib = mergeFuns(
    watchEffect(() =>
      amMap[key].am?.changeVisibilityRange(
        data.globalVisibility ? undefined : data.visibilityRange
      )
    ),
    watchEffect(() => amMap[key].am?.changeTitle(data.title)),
    watchEffect(() => amMap[key].am?.visibilityTitle(data.showTitle)),
    watchEffect(() => amMap[key].am?.changeFontSize(data.fontSize))
  );

  const stopWatch = watch(
    () => ams.value.includes(data),
    (exists) => {
      if (!exists) {
        stopLoad();
        stopAttrib();
        stopWatch();
      }
    },
    { flush: "post" }
  );

  return new Promise((resolve) => {
    const stopWatch = watchEffect(() => {
      if (amMap[key]?.am) {
        resolve(amMap[key]!.am!);
        nextTick(() => stopWatch());
      }
    });
  });
};

export const addFrame = (
  data: AnimationModelFrame
): Promise<AnimationModelFrame3D> => {
  console.log('addFrame')
  const am = ams.value.find((item) =>
    item.frames.find(({ id }) => id === data.id)
  );
  if (!am) {
    throw "找不到am数据";
  }

  const key = getAMKey(am);
  const stopLoad = watch(
    () => {
      const exists = am.frames.some(({ id }) => id === data.id);
      return [amMap[key], exists] as const;
    },
    ([map, exists]) => {
      if (!map.am) return;
      if (exists && !map.frames[data.id]) {
        console.log('add?')
        map.frames[data.id] = map.am.addFrame(data);
      } else if (!exists && map.frames[data.id]) {
        map.frames[data.id].destroy();
        delete map.frames[data.id];
      }
    },
    { immediate: true }
  );

  const stopAttrib = mergeFuns(
    watchEffect(() => amMap[key].frames[data.id]?.changeTime(data.time)),
    watchEffect(() => data.mat && amMap[key].frames[data.id]?.setMat(data.mat))
  );

  const stopWatch = watch(
    () => am.frames.includes(data),
    (exists) => {
      if (!exists) {
        stopLoad();
        stopAttrib();
        stopWatch();
      }
    },
    { flush: "post" }
  );

  return new Promise((resolve) => {
    const stopWatch = watchEffect(() => {
      if (amMap[key]?.frames[data.id]) {
        resolve(amMap[key].frames[data.id]);
        nextTick(() => stopWatch());
      }
    });
  });
};

export const addAction = (
  data: AnimationModelAction
): Promise<AnimationModelAction3D> => {
  const am = ams.value.find((item) =>
    item.actions.find(({ id }) => id === data.id)
  );
  if (!am) {
    throw "找不到am数据";
  }

  const key = getAMKey(am);
  const stopLoad = watch(
    () => {
      const exists = am.actions.some(({ id }) => id === data.id);
      return [amMap[key], exists] as const;
    },
    ([map, exists]) => {
      if (!map.am) return;
      if (exists && !map.actions[data.id]) {
        map.actions[data.id] = map.am.addAction(data);
      } else if (!exists && map.actions[data.id]) {
        map.actions[data.id].destroy();
        delete map.actions[data.id];
      }
    },

    { immediate: true }
  );

  const stopAttrib = mergeFuns(
    watchEffect(() => amMap[key].actions[data.id]?.changeTime(data.time)),
    watchEffect(() => {
      amMap[key].actions[data.id]?.changeAmplitude(data.amplitude)
    }),
    watchEffect(() => amMap[key].actions[data.id]?.changeSpeed(data.speed)),
    watchEffect(() =>
      amMap[key].actions[data.id]?.changeDuration(data.duration)
    )
  );

  const stopWatch = watch(
    () => am.actions.includes(data),
    (exists) => {
      if (!exists) {
        stopLoad();
        stopAttrib();
        stopWatch();
      }
    },
    { flush: "post" }
  );

  return new Promise((resolve) => {
    const stopWatch = watchEffect(() => {
      if (amMap[key]?.actions[data.id]) {
        resolve(amMap[key].actions[data.id]);
        nextTick(() => stopWatch());
      }
    });
  });
};

export const addPath = (
  data: AnimationModelPath
): Promise<AnimationModelPath3D> => {
  const am = ams.value.find((item) =>
    item.paths.find(({ id }) => id === data.id)
  );
  if (!am) {
    throw "找不到am数据";
  }
  const path = computed(() =>
    data.pathId ? getPathNode(data.pathId) : undefined
  );
  const key = getAMKey(am);
  const stopLoad = watch(
    () => {
      const exists = am.paths.some(({ id }) => id === data.id);
      return [amMap[key], exists, path.value] as const;
    },
    ([map, exists, path]) => {
      if (!map.am || !path) return;
      if (exists && !map.paths[data.id]) {
        map.paths[data.id] = map.am.addPath({ ...data, path });
      } else if (!exists && map.paths[data.id]) {
        map.paths[data.id].destroy();
        delete map.paths[data.id];
      }
    },
    { immediate: true }
  );

  const stopAttrib = mergeFuns(
    watchEffect(() => amMap[key].paths[data.id]?.changeTime(data.time)),
    watchEffect(() => amMap[key].paths[data.id]?.changeReverse(data.reverse)),
    watchEffect(() => amMap[key].paths[data.id]?.changeDuration(data.duration)),
    watchEffect(() => amMap[key].paths[data.id]?.changePath(path.value))
  );

  const stopWatch = watch(
    () => am.paths.includes(data),
    (exists) => {
      if (!exists) {
        stopLoad();
        stopAttrib();
        stopWatch();
      }
    },
    { flush: "post" }
  );

  return new Promise((resolve) => {
    const stopWatch = watchEffect(() => {
      if (amMap[key]?.paths[data.id]) {
        resolve(amMap[key].paths[data.id]);
        nextTick(() => stopWatch());
      }
    });
  });
};

export const addSubtitle = (data: AnimationModelSubtitle) => {
  const am = ams.value.find((item) =>
    item.subtitles.find(({ id }) => id === data.id)
  );
  if (!am) {
    throw "找不到am数据";
  }
  const key = getAMKey(am);
  const size = ref({ width: 0, height: 0 });
  const show = ref(false);
  const pixel = ref<Pos>();
  const stopLoad = watch(
    () => {
      const exists = am.subtitles.some(({ id }) => id === data.id);
      return [amMap[key], exists] as const;
    },
    ([map, exists]) => {
      if (!map.am) return;
      if (exists && !map.subtitles[data.id]) {
        map.subtitles[data.id] = mount(
          document.querySelector("#app")!,
          Subtitle,
          reactive({
            pixel,
            show,
            data,
            sizeChang: (csize: Size) => (size.value = csize),
          })
        );
      } else if (!exists && map.subtitles[data.id]) {
        map.subtitles[data.id]();
        delete map.subtitles[data.id];
      }
    },

    { immediate: true }
  );

  
  const stopAttrib = mergeFuns(
    watch([currentTime, () => amMap[am.id].am, size], (_a, _b, onCleanup) => {
      if (
        currentTime.value >= data.time &&
        currentTime.value <= (data.time + data.duration) 
      ) {
        const update = () => pixel.value = amMap[am.id].am?.getCurrentSubtitlePixel(size.value);
        update()
        show.value = true;

        _sdk.sceneBus.on("cameraChange", update);
        onCleanup(() => _sdk.sceneBus.off("cameraChange", update))
      } else {
        show.value = false;
      }
    }, {immediate: true})
  );

  const stopWatch = watch(
    () => am.subtitles.includes(data),
    (exists) => {
      if (!exists) {
        stopLoad();
        stopAttrib();
        stopWatch();
      }
    },
    { flush: "post" }
  );
};

export const endTime = computed(() => {
  const amsEndTime = ams.value.map((am) => {
    const endPoints = [...am.frames, ...am.actions, ...am.subtitles, ...am.paths].map(
      (item) => item.time + (item.duration || 0)
    );
    return Math.max(...endPoints);
  })
  return Math.max(...amsEndTime) + animationGroup.delayEndTime()
})

export const currentTime = ref(0);
export const associationAnimation = (sdk: SDK, el: HTMLDivElement) => {
  animationGroup = sdk.createAnimationGroup();

  watchEffect(() => {
    animationGroup.setCurrentTime(currentTime.value);
  });

  animationGroup.bus.on("currentTime", (time) => {
    currentTime.value = time;
  });

  watch(
    () => [...ams.value],
    (newv, oldv = []) => {
      const { added } = diffArrayChange(newv, oldv);
      added.forEach(addAM);
    }
  );

  watch(
    () => ams.value.flatMap((am) => am.frames),
    (newv, oldv = []) => {
      const { added } = diffArrayChange(newv, oldv);
      added.forEach(addFrame);
    }
  );

  watch(
    () => ams.value.flatMap((am) => am.actions),
    (newv, oldv = []) => {
      const { added } = diffArrayChange(newv, oldv);
      added.forEach(addAction);
    }
  );

  watch(
    () => ams.value.flatMap((am) => am.paths),
    (newv, oldv = []) => {
      const { added } = diffArrayChange(newv, oldv);
      added.forEach(addPath);
    }
  );
  watch(
    () => ams.value.flatMap((am) => am.subtitles),
    (newv, oldv = []) => {
      const { added } = diffArrayChange(newv, oldv);
      added.forEach(addSubtitle);
    }
  );

  
};