adding login functionality

routes/users.js

@@ -9,10 +9,21 @@ const router = Router({prefix: '/api/v1/users'});
 
 router.get('/', auth, getAll);
 router.post('/', bodyParser(), validateUser, createUser);
+router.post('/login', auth, login);
 router.get('/:id([0-9]{1,})', auth, getById);
 router.put('/:id([0-9]{1,})', auth, bodyParser(), validateUser, updateUser);
 router.del('/:id([0-9]{1,})', auth, deleteUser);
 
+
+async function login(ctx) {
+  // return any details needed by the client
+  const {ID, username, email, avatarURL} = ctx.state.user
+  const links = {
+    self: `${ctx.protocol}://${ctx.host}${prefix}/${ID}`
+  }
+  ctx.body = {ID, username, email, avatarURL, links};
+}
+
 async function getAll(ctx) {
   const permission = can.readAll(ctx.state.user);
   if (!permission.granted) {