refactoring

Resolve #7779

packages/client/src/scripts/get-static-image-url.ts

@@ -0,0 +1,16 @@
+import { url as instanceUrl } from '@/config';
+import * as url from '@/scripts/url';
+
+export function getStaticImageUrl(baseUrl: string): string {
+	const u = new URL(baseUrl);
+	if (u.href.startsWith(`${instanceUrl}/proxy/`)) {
+		// もう既にproxyっぽそうだったらsearchParams付けるだけ
+		u.searchParams.set('static', '1');
+		return u.href;
+	}
+	const dummy = `${u.host}${u.pathname}`;	// 拡張子がないとキャッシュしてくれないCDNがあるので
+	return `${instanceUrl}/proxy/${dummy}?${url.query({
+		url: u.href,
+		static: '1'
+	})}`;
+}