remove unnecessary fetchAndUpdate, change notifications fetcher to not double fetch

src/components/notifications/notifications.js

@@ -56,11 +56,6 @@ const Notifications = {
   components: {
     Notification
   },
-  created () {
-    const { dispatch } = this.$store
-
-    dispatch('fetchAndUpdateNotifications')
-  },
   watch: {
     unseenCount (count) {
       if (count > 0) {

src/modules/api.js

@@ -138,9 +138,6 @@ const api = {
       if (!fetcher) return
       store.commit('removeFetcher', { fetcherName: 'notifications', fetcher })
     },
-    fetchAndUpdateNotifications (store) {
-      store.state.backendInteractor.fetchAndUpdateNotifications({ store })
-    },
 
     // Follow requests
     startFetchingFollowRequests (store) {

src/services/backend_interactor_service/backend_interactor_service.js

@@ -12,10 +12,6 @@ const backendInteractorService = credentials => ({
     return notificationsFetcher.startFetching({ store, credentials })
   },
 
-  fetchAndUpdateNotifications ({ store }) {
-    return notificationsFetcher.fetchAndUpdate({ store, credentials })
-  },
-
   startFetchingFollowRequests ({ store }) {
     return followRequestFetcher.startFetching({ store, credentials })
   },

src/services/notifications_fetcher/notifications_fetcher.service.js

@@ -31,9 +31,12 @@ const fetchAndUpdate = ({ store, credentials, older = false }) => {
     const notifications = timelineData.data
     const readNotifsIds = notifications.filter(n => n.seen).map(n => n.id)
     if (readNotifsIds.length) {
-      args['since'] = Math.max(...readNotifsIds)
+      const possibleMax = Math.max(...readNotifsIds)
+      if (possibleMax !== timelineData.maxId) {
+        args['since'] = possibleMax
         fetchNotifications({ store, args, older })
       }
+    }
 
     return result
   }