First pass

src/middleware.ts

@@ -0,0 +1,25 @@
+import { defineMiddleware } from 'astro/middleware';
+import { validateSession } from './lib/auth';
+
+export const onRequest = defineMiddleware(async (context, next) => {
+  const sessionId = context.cookies.get('session_id')?.value;
+
+  if (!sessionId) {
+    context.locals.user = null;
+    context.locals.session = null;
+    return next();
+  }
+
+  const result = await validateSession(sessionId);
+
+  if (result) {
+    context.locals.user = result.user;
+    context.locals.session = result.session;
+  } else {
+    context.locals.user = null;
+    context.locals.session = null;
+    context.cookies.delete('session_id');
+  }
+
+  return next();
+});