From 17daf446848443644538d9100b28018d190f5efa Mon Sep 17 00:00:00 2001
From: Andras Schmelczer <andras@schmelczer.dev>
Date: Mon, 25 May 2026 09:49:13 +0100
Subject: [PATCH] same

---
 public/_headers         | 21 +++++++++
 scripts/check-links.mjs | 98 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 119 insertions(+)
 create mode 100644 public/_headers
 create mode 100644 scripts/check-links.mjs

diff --git a/public/_headers b/public/_headers
new file mode 100644
index 0000000..76e5aa6
--- /dev/null
+++ b/public/_headers
@@ -0,0 +1,21 @@
+/*
+  X-Content-Type-Options: nosniff
+  Referrer-Policy: strict-origin-when-cross-origin
+
+/_astro/*
+  Cache-Control: public, max-age=31536000, immutable
+
+/fonts/*
+  Cache-Control: public, max-age=31536000, immutable
+
+/media/*
+  Cache-Control: public, max-age=86400, stale-while-revalidate=604800
+
+/favicon.ico
+  Cache-Control: public, max-age=604800
+
+/*.xml
+  Cache-Control: public, max-age=300
+
+/*.webmanifest
+  Cache-Control: public, max-age=300
diff --git a/scripts/check-links.mjs b/scripts/check-links.mjs
new file mode 100644
index 0000000..ded49c4
--- /dev/null
+++ b/scripts/check-links.mjs
@@ -0,0 +1,98 @@
+import { readdir, readFile, stat } from 'node:fs/promises';
+import path from 'node:path';
+
+const dist = path.resolve('dist');
+const allowedPreservedRoutes = new Set(['/fleeting/', '/reconcile/']);
+const failures = [];
+
+async function walk(dir) {
+  const entries = await readdir(dir, { withFileTypes: true });
+  const files = [];
+
+  for (const entry of entries) {
+    const fullPath = path.join(dir, entry.name);
+    if (entry.isDirectory()) {
+      files.push(...(await walk(fullPath)));
+    } else {
+      files.push(fullPath);
+    }
+  }
+
+  return files;
+}
+
+async function exists(file) {
+  try {
+    return (await stat(file)).isFile();
+  } catch {
+    return false;
+  }
+}
+
+async function targetExists(pathname) {
+  if (allowedPreservedRoutes.has(pathname)) return true;
+
+  const safePath = path
+    .normalize(decodeURIComponent(pathname))
+    .replace(/^\/+/, '')
+    .replace(/^(\.\.(\/|\\|$))+/, '');
+  const candidate = path.join(dist, safePath);
+  const candidates = [
+    candidate,
+    path.join(candidate, 'index.html'),
+    path.join(dist, `${safePath}.html`),
+  ];
+
+  for (const file of candidates) {
+    if (await exists(file)) return true;
+  }
+  return false;
+}
+
+try {
+  await stat(dist);
+} catch {
+  throw new Error('dist/ does not exist. Run npm run build first.');
+}
+
+const files = await walk(dist);
+const htmlAndXml = files.filter((file) => /\.(html|xml)$/.test(file));
+
+function pagePathname(file) {
+  const rel = path.relative(dist, file).replaceAll(path.sep, '/');
+  if (rel === 'index.html') return '/';
+  if (rel.endsWith('/index.html')) return `/${rel.slice(0, -'index.html'.length)}`;
+  return `/${rel}`;
+}
+
+for (const file of htmlAndXml) {
+  const body = await readFile(file, 'utf8');
+  const rel = path.relative(dist, file);
+  const baseUrl = new URL(pagePathname(file), 'https://schmelczer.dev');
+  const matches = body.matchAll(/\b(?:href|src)=["']([^"'#?]+)(?:[?#][^"']*)?["']/g);
+
+  for (const match of matches) {
+    const raw = match[1];
+    if (/^(mailto:|tel:|data:)/i.test(raw)) continue;
+
+    let parsed;
+    try {
+      parsed = new URL(raw, baseUrl);
+    } catch {
+      failures.push(`${rel}: invalid URL ${raw}`);
+      continue;
+    }
+
+    if (parsed.origin !== 'https://schmelczer.dev') continue;
+    if (!(await targetExists(parsed.pathname))) {
+      failures.push(`${rel}: missing local target ${parsed.pathname}`);
+    }
+  }
+}
+
+if (failures.length > 0) {
+  console.error(failures.join('\n'));
+  process.exit(1);
+}
+
+console.log('No missing local href/src targets found in dist/.');