Separated router and user authentication. Renamed login.js to user.js and now it only exports functions for the router to use.

api/user.js

@@ -0,0 +1,51 @@
+const passport = require("passport");
+const path = require("path");
+const User = require(path.join(__dirname + "/../schemas/User"));
+const router = require("express").Router();
+
+const register = (req, res, next) => {
+  User.register(
+    new User({ username: req.body.username }),
+    req.body.password,
+    function(err) {
+      if (err) {
+        if (err.name == "UserExistsError")
+          res.status(409).send({ success: false, message: err.message })
+        else if (err.name == "MissingUsernameError" || err.name == "MissingPasswordError")
+          res.status(400).send({ success: false, message: err.message })
+        return next(err);
+      }
+
+      return res.status(200).send({ message: "Bruker registrert. Velkommen " + req.body.username, success: true })
+     }
+  );
+};
+
+const login = (req, res, next) => {
+  passport.authenticate("local", function(err, user, info) {
+    if (err) {
+      if (err.name == "MissingUsernameError" || err.name == "MissingPasswordError")
+        return res.status(400).send({ message: err.message, success: false })
+      return next(err);
+    }
+
+    if (!user) return res.status(404).send({ message: "Incorrect username or password", success: false })
+
+    req.logIn(user, (err) => {
+      if (err) { return next(err) }
+
+      return res.status(200).send({ message: "Velkommen " + user.username, success: true })
+    })
+  })(req, res, next);
+};
+
+const logout = (req, res) => {
+  req.logout();
+  res.redirect("/");
+};
+
+module.exports = {
+  register,
+  login,
+  logout
+};