import { Entity, LabelGraphics, useCesium } from "resium";
import { Cartesian2, Cartesian3, Color, LabelStyle } from "cesium";
import { Fragment, useCallback, useState } from "react";
import { useInterval } from "ahooks";

function Labels() {
  const { viewer } = useCesium();

  const [show, setShow] = useState(false);

  const showAnimate = useCallback(() => {
    const { currentTime, stopTime } = viewer.clock;
    const leftTime = Math.floor(
      stopTime.secondsOfDay - currentTime.secondsOfDay
    );

    if (leftTime < 5) {
      setShow(true);
    } else if (show) setShow(false);
  }, [show]);

  useInterval(showAnimate, 100);

  return (
    <Fragment>
      <Entity position={Cartesian3.fromDegrees(90, 27, 0)}>
        <LabelGraphics
          text={"青藏高原温度异常"}
          font="24px Helvetica"
          fillColor={Color.SKYBLUE}
          outlineColor={Color.BLACK}
          outlineWidth={2}
          style={LabelStyle.FILL_AND_OUTLINE}
          eyeOffset={new Cartesian2(0, 200000)}
        />
      </Entity>
      <Entity position={Cartesian3.fromDegrees(-55, 45, 0)}>
        <LabelGraphics
          text={"拉布拉多海温度异常"}
          font="24px Helvetica"
          fillColor={Color.SKYBLUE}
          outlineColor={Color.BLACK}
          outlineWidth={2}
          style={LabelStyle.FILL_AND_OUTLINE}
          eyeOffset={new Cartesian2(0, 200000)}
        />
      </Entity>
      <Entity show={show} position={Cartesian3.fromDegrees(98, 48, 0)}>
        <LabelGraphics
          text={"barotropic"}
          font="24px Helvetica"
          fillColor={Color.SKYBLUE}
          outlineColor={Color.BLACK}
          outlineWidth={2}
          style={LabelStyle.FILL_AND_OUTLINE}
          eyeOffset={new Cartesian2(0, 1200000)}
        />
      </Entity>
    </Fragment>
  );
}

export default Labels;
