feat: authentication

apps/server/src/modules/auth/auth.middleware.ts

@@ -0,0 +1,63 @@
+import { deleteCookie, getCookie } from "hono/cookie";
+import { createMiddleware } from "hono/factory";
+import { authService } from "./auth.service";
+
+const COOKIE_NAME = "session_id";
+const COOKIE_OPTIONS = {
+	httpOnly: true,
+	secure: process.env.NODE_ENV === "production",
+	sameSite: "lax" as const,
+	path: "/",
+};
+
+declare module "hono" {
+	interface ContextVariableMap {
+		user: {
+			id: number;
+			username: string;
+		};
+	}
+}
+
+/**
+ * Middleware to require authentication
+ * Verifies the session cookie and attaches user to context
+ */
+export const requireAuth = createMiddleware(async (c, next) => {
+	const sessionId = getCookie(c, COOKIE_NAME);
+
+	if (!sessionId) {
+		return c.json({ message: "Authentication required" }, 401);
+	}
+
+	const session = await authService.verifySession(sessionId);
+
+	if (!session) {
+		deleteCookie(c, COOKIE_NAME, COOKIE_OPTIONS);
+		return c.json({ message: "Invalid or expired session" }, 401);
+	}
+
+	c.set("user", session.user);
+
+	await next();
+});
+
+/**
+ * Middleware to optionally attach user if authenticated
+ * Does not block the request if not authenticated
+ */
+export const optionalAuth = createMiddleware(async (c, next) => {
+	const sessionId = getCookie(c, COOKIE_NAME);
+
+	if (sessionId) {
+		const session = await authService.verifySession(sessionId);
+
+		if (session) {
+			c.set("user", session.user);
+		} else {
+			deleteCookie(c, COOKIE_NAME, COOKIE_OPTIONS);
+		}
+	}
+
+	await next();
+});