Initial commit

Created from https://vercel.com/new

lib/middleware.js

@@ -0,0 +1,47 @@
+import cors from 'cors';
+import { getSession } from './session';
+import { getAuthToken } from './auth';
+import { unauthorized, badRequest, serverError } from './response';
+
+export function use(middleware) {
+  return (req, res) =>
+    new Promise((resolve, reject) => {
+      middleware(req, res, result => {
+        if (result instanceof Error) {
+          return reject(result);
+        }
+        return resolve(result);
+      });
+    });
+}
+
+export const useCors = use(cors());
+
+export const useSession = use(async (req, res, next) => {
+  let session;
+
+  try {
+    session = await getSession(req);
+  } catch (e) {
+    console.error(e);
+    return serverError(res, e.message);
+  }
+
+  if (!session) {
+    return badRequest(res);
+  }
+
+  req.session = session;
+  next();
+});
+
+export const useAuth = use(async (req, res, next) => {
+  const token = await getAuthToken(req);
+
+  if (!token) {
+    return unauthorized(res);
+  }
+
+  req.auth = token;
+  next();
+});