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import { useContext, useEffect, useRef } from 'preact/hooks'
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import { unified } from 'unified'
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import remarkParse from 'remark-parse'
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import remarkMath from 'remark-math'
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import remarkRehype from 'remark-rehype'
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import rehypeKatex from 'rehype-katex'
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import rehypeStringify from 'rehype-stringify'
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import { ServerContext } from '../hooks'
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async function renderMarkdownAsync(source: string) {
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return await unified()
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.use(remarkParse)
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.use(remarkMath)
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.use(remarkRehype)
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.use(rehypeKatex, { throwOnError: false, errorColor: '#c60' })
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.use(rehypeStringify)
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.process(source)
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}
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// function renderMarkdownSync(source: string): string {
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// return unified()
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// .use(remarkParse)
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// .use(remarkMath)
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// .use(remarkRehype)
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// .use(rehypeKatex, { throwOnError: false, errorColor: '#c60' })
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// .use(rehypeStringify)
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// .processSync(source)
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// .toString()
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// }
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export const Markdown = ({ source }: { source: string }) => {
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// Magia nera per renderizzare il markdown lato server
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//
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// const isServer = useContext(ServerContext)
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// if (isServer) {
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// return (
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// <div
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// class="markdown"
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// dangerouslySetInnerHTML={{
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// __html: renderMarkdownSync(source),
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// }}
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// ></div>
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// )
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// }
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const elementRef = useRef<HTMLDivElement>(null)
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useEffect(() => {
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renderMarkdownAsync(source).then(data => {
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if (elementRef.current) {
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elementRef.current.innerHTML = data.toString()
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}
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})
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}, [source])
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return <div class="markdown" ref={elementRef}></div>
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}
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