add logout, small improvements

api-renamed/login.js

@@ -7,12 +7,11 @@ import { authenticate } from "../src/users.js";
  */
 export default async (req, res) => {
   const { code, private_access, user_key } = req.query;
-  res.setHeader("Content-Type", "application/json");
   try {
-    await authenticate(code, private_access === "true", user_key);
+    let userId = await authenticate(code, private_access === "true", user_key);
+    res.send(userId);
   } catch (err) {
     logger.error(err);
     res.send("Something went wrong: " + err.message);
   }
-  res.send("ok");
 };

api-renamed/logout.js

@@ -0,0 +1,17 @@
+import { logger } from "../src/common/utils.js";
+import { logout } from "../src/users.js";
+
+/**
+ * @param {any} req The request.
+ * @param {any} res The response.
+ */
+export default async (req, res) => {
+  const { user_key } = req.query;
+  try {
+    await logout(user_key);
+  } catch (err) {
+    logger.error(err);
+    res.send("Something went wrong: " + err.message);
+  }
+  res.send("ok");
+};