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import type { AstroIntegration } from "astro";
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";
export default function ogImageIntegration(): AstroIntegration {
return {
name: "og-image-per-page",
hooks: {
"astro:build:done": async ({ dir, pages }) => {
const distDir = typeof dir === "string" ? dir : fileURLToPath(dir);
for (const page of pages) {
const htmlPath = path.join(distDir, page.pathname, "index.html");
if (!fs.existsSync(htmlPath)) continue;
let html = fs.readFileSync(htmlPath, "utf-8");
let slug = page.pathname.replace(/^\/|\/$/g, "") || "index";
const ogImageUrl = `https://yasutakeyohei.com/og/${slug}.png?v=2`;
html = html.replace(
/<meta property="og:image" content="[^"]*"/g,
`<meta property="og:image" content="${ogImageUrl}"`,
);
html = html.replace(
/<meta name="twitter:image" content="[^"]*"/g,
`<meta name="twitter:image" content="${ogImageUrl}"`,
);
// Fix breadcrumb: replace directory slug with Japanese label
html = html.replace(/>about-dyslexia</g, `>ディスレクシアについて<`);
fs.writeFileSync(htmlPath, html, "utf-8");
}
},
},
};
}
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