UserRepository handles updating db settings better.

Moved the plex_userid to settings to expanded with functions for
updating and fetching settings, each with its own helper function
towards the database.
Since we had a linkPlexUserId function and we dont want plex_userid to
be updated from the updatesettings function we moved unlinking to a
separate endpoint and class function.
Also a new controller and endpoints for getting and updating settings.

seasoned_api/src/webserver/controllers/user/authenticatePlexAccount.js

@@ -57,7 +57,7 @@ function plexAuthenticate(username, password) {
     .then(resp => handleResponse(resp))
 }
 
-function authenticatePlexAccountController(req, res) {
+function link(req, res) {
   const user = req.loggedInUser;
   const { username, password } = req.body;
 
@@ -70,4 +70,18 @@ function authenticatePlexAccountController(req, res) {
     .catch(error => handleError(error, res))
 }
 
-module.exports = authenticatePlexAccountController;
+function link(req, res) {
+  const user = req.loggedInUser;
+
+  return userRepository.unlinkPlexUserId(user.username)
+    .then(response => res.send({
+      success: true,
+      message: "Successfully unlinked plex account from seasoned request."
+    }))
+    .catch(error => handleError(error, res))
+}
+
+module.exports = {
+  link,
+  unlink
+};

seasoned_api/src/webserver/controllers/user/settings.js

@@ -0,0 +1,42 @@
+const UserRepository = require('src/user/userRepository');
+const userRepository = new UserRepository();
+/**
+ * Controller: Retrieves settings of a logged in user
+ * @param {Request} req http request variable
+ * @param {Response} res
+ * @returns {Callback}
+ */
+const getSettingsController = (req, res) => {
+   const user = req.loggedInUser;
+   const username = user === undefined ? undefined : user.username;
+
+   userRepository.getSettings(username)
+      .then(settings => {
+         res.send({ success: true, settings });
+      })
+      .catch(error => {
+         res.status(404).send({ success: false, message: error.message });
+      });
+}
+
+
+const updateSettingsController = (req, res) => {
+   const user = req.loggedInUser;
+   const username = user === undefined ? undefined : user.username;
+
+   const idempotencyKey = req.headers('Idempotency-Key'); // TODO implement better transactions
+   const { dark_mode, emoji } = req.body;
+
+   userRepository.updateSettings(username, dark_mode, emoji)
+      .then(settings => {
+         res.send({ success: true, settings });
+      })
+      .catch(error => {
+         res.status(404).send({ success: false, message: error.message });
+      });
+}
+
+module.exports = {
+   getSettingsController,
+   updateSettingsController
+}