Add ability to hide and unhide series

List of hidden series IDs is stored in user.extraData and hidden series
are filtered out of the query on the server side.

server/controllers/MeController.js

@@ -421,6 +421,44 @@ class MeController {
     res.json(req.user.toOldJSONForBrowser())
   }
 
+  /**
+   * GET: /api/me/series/:id/hide
+   *
+   * @param {RequestWithUser} req
+   * @param {Response} res
+   */
+  async hideSeries(req, res) {
+    if (!(await Database.seriesModel.checkExistsById(req.params.id))) {
+      Logger.error(`[MeController] hideSeries: Series ${req.params.id} not found`)
+      return res.sendStatus(404)
+    }
+
+    const hasUpdated = await req.user.hideSeries(req.params.id)
+    if (hasUpdated) {
+      SocketAuthority.clientEmitter(req.user.id, 'user_updated', req.user.toOldJSONForBrowser())
+    }
+    res.json(req.user.toOldJSONForBrowser())
+  }
+
+  /**
+   * GET: /api/me/series/:id/unhide
+   *
+   * @param {RequestWithUser} req
+   * @param {Response} res
+   */
+  async unhideSeries(req, res) {
+    if (!(await Database.seriesModel.checkExistsById(req.params.id))) {
+      Logger.error(`[MeController] unhideSeries: Series ${req.params.id} not found`)
+      return res.sendStatus(404)
+    }
+
+    const hasUpdated = await req.user.unhideSeries(req.params.id)
+    if (hasUpdated) {
+      SocketAuthority.clientEmitter(req.user.id, 'user_updated', req.user.toOldJSONForBrowser())
+    }
+    res.json(req.user.toOldJSONForBrowser())
+  }
+
   /**
    * GET: api/me/progress/:id/remove-from-continue-listening
    *

server/controllers/UserController.js

@@ -178,6 +178,7 @@ class UserController {
       permissions,
       bookmarks: [],
       extraData: {
+        hiddenSeries: [],
         seriesHideFromContinueListening: []
       }
     }