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import { CSSProperties, useCallback, useRef, useEffect, useState } from "react";
import styled, { css } from "styled-components";
import { Lrc, LrcLine } from "react-lrc";
import { LRC } from "./data";
const Root = styled.div`
position: absolute;
width: 100%;
height: 100%;
top: 0;
left: 0;
display: flex;
flex-direction: column;
`;
const lrcStyle: CSSProperties = {
flex: 1,
minHeight: 0,
overflow: 'hidden !important'
};
const Line = styled.div<{ $active: boolean; $next: boolean }>`
min-height: 10px;
padding: 14px 30px;
font-size: 40px;
font-family : "Roboto", sans-serif;
font-weight: 500;
text-align: center;
color: rgb(72,72,72);
background: linear-gradient(to right, rgba(0,0,0,0) 50%, rgb(200, 190, 190) 50%);
background-size: 200% 100%;
background-position: right bottom;
${({ $active }) => $active && css`
color: black;
font-weight: 700;
background-position: left bottom;
color: rgb(50, 50, 50);
`}
`;
function App() {
const [currentMillisecond, setCurrentMillisecond] = useState(0);
const videoRef = useRef<HTMLVideoElement>(null);
useEffect(() => {
const video = videoRef.current;
if (!video) return;
const syncLrcWithVideo = () => {
const offset = 400;
setCurrentMillisecond((video.currentTime * 1000)+offset);
};
video.addEventListener('timeupdate', syncLrcWithVideo);
return () => {
video.removeEventListener('timeupdate', syncLrcWithVideo);
};
}, [setCurrentMillisecond]);
const lineRenderer = useCallback(
({ active, line: { content } }: { active: boolean; line: LrcLine }) => {
const next = active && content === '';
return <Line $active={active} $next={next}>{content}</Line>
},
[]
);
return (
<Root>
<div style={{ display: 'flex', width: '100%', height: '100vh' }}>
<Lrc
lrc={LRC}
lineRenderer={lineRenderer}
currentMillisecond={currentMillisecond}
style={lrcStyle}
recoverAutoScrollInterval={0}
/>
<div style={{ flex: 1 }}>
<video ref={videoRef} src="https://cdn.pinapelz.com/VTuber%20Covers%20Archive/pj9yqqTYa-E.webm" controls style={{ width: '100%', height: '100%' }} />
</div>
</div>
</Root>
);
}
export default App;
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