src/pages/og-image/[slug].png.ts 3.0 K raw
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import type { APIContext, GetStaticPathsResult } from "astro";
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import { getCollection, getEntryBySlug } from "astro:content";
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import satori, { SatoriOptions } from "satori";
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import { html } from "satori-html";
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import { Resvg } from "@resvg/resvg-js";
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import siteConfig from "@/site-config";
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import { getFormattedDate } from "@/utils";
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const monoFontReg = await fetch(
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  "https://api.fontsource.org/v1/fonts/roboto-mono/latin-400-normal.ttf"
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);
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const monoFontBold = await fetch(
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  "https://api.fontsource.org/v1/fonts/roboto-mono/latin-700-normal.ttf"
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);
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const ogOptions: SatoriOptions = {
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  width: 1200,
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  height: 630,
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  // debug: true,
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  embedFont: true,
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  fonts: [
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    {
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      name: "Roboto Mono",
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      data: await monoFontReg.arrayBuffer(),
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      weight: 400,
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      style: "normal",
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    },
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    {
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      name: "Roboto Mono",
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      data: await monoFontBold.arrayBuffer(),
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      weight: 700,
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      style: "normal",
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    },
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  ],
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};
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const markup = (title: string, pubDate: string, description: string) => html`<div
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	tw="flex flex-col w-full h-full bg-[#2e3440] text-[#edeff3]"
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>
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	<div tw="flex flex-col flex-1 w-full p-10 justify-center">
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		<p tw="text-2xl mb-6">${pubDate}</p>
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		<h1 tw="text-6xl font-bold leading-snug text-white">${title}</h1>
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		<h2 tw="text-2xl font-bold leading-snug text-white">${description}</h2>
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	</div>
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	<div tw="flex items-center justify-between w-full p-10 border-t border-[#a3be8c] text-xl">
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		<div tw="flex items-center">
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			<svg height="60" fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 500 500">
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<path d="M20.1465 448.094H479L350.926 226.37L311.281 258.273L275.108 232.751L249.573 258.273L215.528 232.751L193.185 258.273L151.291 221.053L20.1465 448.094Z" fill="#88C0D0"/>
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<path d="M249.573 50.9053L151.291 221.053L193.185 258.273L215.528 232.751L249.573 258.273L275.108 232.751L311.281 258.273L350.926 226.37L249.573 50.9053Z" fill="#EDEFF3"/>
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<path d="M151.291 221.053L20.1465 448.094H479L350.926 226.37M151.291 221.053L249.573 50.9053L350.926 226.37M151.291 221.053L193.185 258.273L215.528 232.751L249.573 258.273L275.108 232.751L311.281 258.273L350.926 226.37" stroke="black" stroke-width="7"/>
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<line x1="265.341" y1="167.541" x2="294.587" y2="218.169" stroke="black" stroke-width="5"/>
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			</svg>
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			<p tw="ml-3 font-semibold text-3xl">${siteConfig.title}</p>
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		</div>
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	</div>
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</div>`;
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export async function get({ params: { slug } }: APIContext) {
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  const post = await getEntryBySlug("post", slug!);
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  const title = post?.data.title ?? siteConfig.title;
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  const postDate = getFormattedDate(post?.data.publishDate ?? Date.now(), {
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    weekday: "long",
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  });
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  const description = post?.data.description ?? siteConfig.title;
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  const svg = await satori(markup(title, postDate, description), ogOptions);
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  const png = new Resvg(svg).render().asPng();
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  return {
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    body: png,
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    encoding: "binary",
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  };
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}
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export async function getStaticPaths(): Promise<GetStaticPathsResult> {
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  const posts = await getCollection("post");
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  return posts.filter(({ data }) => !data.ogImage).map(({ slug }) => ({ params: { slug } }));
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}