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import { memo, useEffect, useState } from 'react';
import {
bundledLanguages,
codeToHtml,
isSpecialLang,
type BundledLanguage,
type BundledTheme,
type SpecialLanguage,
} from 'shiki';
import { classNames } from '~/utils/classNames';
import { createScopedLogger } from '~/utils/logger';
import styles from './CodeBlock.module.scss';
const logger = createScopedLogger('CodeBlock');
interface CodeBlockProps {
code: string;
language?: BundledLanguage;
theme?: BundledTheme | SpecialLanguage;
}
export const CodeBlock = memo(({ code, language, theme }: CodeBlockProps) => {
const [html, setHTML] = useState<string | undefined>(undefined);
const [copied, setCopied] = useState(false);
const copyToClipboard = () => {
if (copied) {
return;
}
navigator.clipboard.writeText(code);
setCopied(true);
setTimeout(() => {
setCopied(false);
}, 2000);
};
useEffect(() => {
if (language && !isSpecialLang(language) && !(language in bundledLanguages)) {
logger.warn(`Unsupported language '${language}'`);
}
logger.trace(`Language = ${language}`);
const processCode = async () => {
setHTML(await codeToHtml(code, { lang: language ?? 'plaintext', theme: theme ?? 'dark-plus' }));
};
processCode();
}, [code]);
return (
<div className="relative group">
<div
className={classNames(
styles.CopyButtonContainer,
'bg-white absolute top-[10px] right-[10px] rounded-md z-10 text-lg flex items-center justify-center opacity-0 group-hover:opacity-100',
{
'rounded-l-0 opacity-100': copied,
},
)}
>
<button
className={classNames(
'flex items-center bg-transparent p-[6px] justify-center before:bg-white before:rounded-l-md before:text-gray-500 before:border-r before:border-gray-300',
{
'before:opacity-0': !copied,
'before:opacity-100': copied,
},
)}
title="Copy Code"
onClick={() => copyToClipboard()}
>
<div className="i-ph:clipboard-text-duotone"></div>
</button>
</div>
<div dangerouslySetInnerHTML={{ __html: html ?? '' }}></div>
</div>
);
});
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