KisAssistant 0.2.0: React UI, SQLite accounts, shares, drivers, NixOS module

src/static.ts

@@ -0,0 +1,38 @@
+import { join } from "node:path";
+
+const PUBLIC_DIR = join(import.meta.dir, "..", "public");
+
+const MIME: Record<string, string> = {
+  ".html": "text/html; charset=utf-8",
+  ".css": "text/css; charset=utf-8",
+  ".js": "text/javascript; charset=utf-8",
+  ".json": "application/json",
+  ".svg": "image/svg+xml",
+  ".png": "image/png",
+  ".ico": "image/x-icon",
+};
+
+export async function serveStatic(req: Request, url: URL): Promise<Response> {
+  if (req.method !== "GET" && req.method !== "HEAD") {
+    return new Response("not found", { status: 404 });
+  }
+  let path = decodeURIComponent(url.pathname);
+  if (path === "/") path = "/index.html";
+  // block traversal
+  if (path.includes("..") || path.includes("\0")) return new Response("not found", { status: 404 });
+  const file = Bun.file(join(PUBLIC_DIR, path));
+  if (!(await file.exists())) {
+    // SPA fallback for non-API routes
+    if (!path.startsWith("/api/")) {
+      return new Response(Bun.file(join(PUBLIC_DIR, "index.html")));
+    }
+    return new Response("not found", { status: 404 });
+  }
+  const ext = path.slice(path.lastIndexOf("."));
+  return new Response(file, {
+    headers: {
+      "Content-Type": MIME[ext] ?? "application/octet-stream",
+      "Cache-Control": path === "/index.html" ? "no-cache" : "public, max-age=3600",
+    },
+  });
+}