feat: サイトマップを追加

website/src/components/templates/BaseTemplate.tsx

@@ -64,6 +64,8 @@ export const BaseTemplate: FC<BaseTemplateProps> = ({
 				<meta name="twitter:site" content="@typstapp" />
 				<meta name="twitter:card" content="summary_large_image" />
 				<link rel="canonical" href={`https://typst-jp.github.io${route}`} />
+				<meta name="robots" content="index, follow" />
+				<link rel="sitemap" type="application/xml" href="/sitemap.xml" />
 				<meta
 					name="twitter:image:alt"
 					content="The left side of a text editor with colorful cursors, as well as the text 'Compose papers faster, Typst'"

website/src/index.tsx

@@ -66,4 +66,39 @@ flattenedPages.forEach((page, pageIndex) => {
 	});
 });
 
+app.get("/sitemap.xml", (c) => {
+	const routes = ["/", ...flattenedPages.map((page) => page.route)];
+	const today = new Date();
+	const formattedDate = `${today.getFullYear()}-${String(today.getMonth() + 1).padStart(2, "0")}-${String(today.getDate()).padStart(2, "0")}`;
+
+	const sitemap = `<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+${routes
+	.map(
+		(route) => `	<url>
+		<loc>https://typst-jp.github.io${route}</loc>
+		<lastmod>${formattedDate}</lastmod>
+	</url>`,
+	)
+	.join("\n")}
+</urlset>
+`;
+
+	return c.text(sitemap, 200, {
+		"Content-Type": "application/xml",
+	});
+});
+
+app.get("/robots.txt", (c) => {
+	const robotsTxt = `User-agent: *
+Allow: /
+
+Sitemap: https://typst-jp.github.io/sitemap.xml
+`;
+
+	return c.text(robotsTxt, 200, {
+		"Content-Type": "text/plain",
+	});
+});
+
 export default app;