owncast/web/components/theme/Theme.tsx

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/* eslint-disable react/no-danger */
import Head from 'next/head';
import { FC, useEffect, useState } from 'react';
import { useRecoilValue } from 'recoil';
import { ClientConfig } from '../../interfaces/client-config.model';
import { clientConfigStateAtom } from '../stores/ClientConfigStore';
export const Theme: FC = () => {
const clientConfig = useRecoilValue<ClientConfig>(clientConfigStateAtom);
const { appearanceVariables, customStyles } = clientConfig;
const appearanceVars = Object.keys(appearanceVariables || {})
.filter(variable => !!appearanceVariables[variable])
.map(variable => `--${variable}: ${appearanceVariables[variable]}`);
const [themeColor, setThemeColor] = useState('#fff');
useEffect(() => {
const color = getComputedStyle(document.documentElement).getPropertyValue(
'--theme-color-background-header',
);
setThemeColor(color);
}, [appearanceVars]);
return (
<>
<Head>
<meta name="theme-color" content={themeColor} />
</Head>
<style
dangerouslySetInnerHTML={{
__html: `
:root {
${appearanceVars.join(';\n')}
}
`,
}}
/>
<style
dangerouslySetInnerHTML={{
__html: `
${customStyles}
`,
}}
/>
</>
);
};