From 8c5689775fabd3775bca32aced23c3c1e866451b Mon Sep 17 00:00:00 2001
From: Thibaut Girka <thib@sitedethib.com>
Date: Sat, 1 Feb 2020 17:03:39 +0100
Subject: [PATCH] Fetch last read notification id to update unread notification
 count on load

---
 .../flavours/glitch/actions/markers.js        | 42 +++++++++++++++++++
 .../flavours/glitch/features/ui/index.js      |  3 +-
 .../flavours/glitch/reducers/notifications.js | 19 ++++++++-
 3 files changed, 62 insertions(+), 2 deletions(-)

diff --git a/app/javascript/flavours/glitch/actions/markers.js b/app/javascript/flavours/glitch/actions/markers.js
index c3a5fe86f1..defcb71274 100644
--- a/app/javascript/flavours/glitch/actions/markers.js
+++ b/app/javascript/flavours/glitch/actions/markers.js
@@ -1,3 +1,9 @@
+import api from 'flavours/glitch/util/api';
+
+export const MARKERS_FETCH_REQUEST = 'MARKERS_FETCH_REQUEST';
+export const MARKERS_FETCH_SUCCESS = 'MARKERS_FETCH_SUCCESS';
+export const MARKERS_FETCH_FAIL    = 'MARKERS_FETCH_FAIL';
+
 export const submitMarkers = () => (dispatch, getState) => {
   const accessToken = getState().getIn(['meta', 'access_token'], '');
   const params      = {};
@@ -28,3 +34,39 @@ export const submitMarkers = () => (dispatch, getState) => {
   client.setRequestHeader('Authorization', `Bearer ${accessToken}`);
   client.send(JSON.stringify(params));
 };
+
+export const fetchMarkers = () => (dispatch, getState) => {
+    const params = { timeline: ['notifications'] };
+
+    dispatch(fetchMarkersRequest());
+
+    api(getState).get('/api/v1/markers', { params }).then(response => {
+      dispatch(fetchMarkersSuccess(response.data));
+    }).catch(error => {
+      dispatch(fetchMarkersFail(error));
+    });
+};
+
+export function fetchMarkersRequest() {
+  return {
+    type: MARKERS_FETCH_REQUEST,
+    skipLoading: true,
+  };
+};
+
+export function fetchMarkersSuccess(markers) {
+  return {
+    type: MARKERS_FETCH_SUCCESS,
+    markers,
+    skipLoading: true,
+  };
+};
+
+export function fetchMarkersFail(error) {
+  return {
+    type: MARKERS_FETCH_FAIL,
+    error,
+    skipLoading: true,
+    skipAlert: true,
+  };
+};
diff --git a/app/javascript/flavours/glitch/features/ui/index.js b/app/javascript/flavours/glitch/features/ui/index.js
index 5c861fdee9..9f9ef561ad 100644
--- a/app/javascript/flavours/glitch/features/ui/index.js
+++ b/app/javascript/flavours/glitch/features/ui/index.js
@@ -12,7 +12,7 @@ import { expandHomeTimeline } from 'flavours/glitch/actions/timelines';
 import { expandNotifications, notificationsSetVisibility } from 'flavours/glitch/actions/notifications';
 import { fetchFilters } from 'flavours/glitch/actions/filters';
 import { clearHeight } from 'flavours/glitch/actions/height_cache';
-import { submitMarkers } from 'flavours/glitch/actions/markers';
+import { submitMarkers, fetchMarkers } from 'flavours/glitch/actions/markers';
 import { WrappedSwitch, WrappedRoute } from 'flavours/glitch/util/react_router_helpers';
 import UploadArea from './components/upload_area';
 import PermaLink from 'flavours/glitch/components/permalink';
@@ -388,6 +388,7 @@ class UI extends React.Component {
 
     this.favicon = new Favico({ animation:"none" });
 
+    this.props.dispatch(fetchMarkers());
     this.props.dispatch(expandHomeTimeline());
     this.props.dispatch(expandNotifications());
     setTimeout(() => this.props.dispatch(fetchFilters()), 500);
diff --git a/app/javascript/flavours/glitch/reducers/notifications.js b/app/javascript/flavours/glitch/reducers/notifications.js
index 3623e90da6..d0eb7bb5ab 100644
--- a/app/javascript/flavours/glitch/reducers/notifications.js
+++ b/app/javascript/flavours/glitch/reducers/notifications.js
@@ -23,6 +23,9 @@ import {
   FOLLOW_REQUEST_AUTHORIZE_SUCCESS,
   FOLLOW_REQUEST_REJECT_SUCCESS,
 } from 'flavours/glitch/actions/accounts';
+import {
+  MARKERS_FETCH_SUCCESS,
+} from 'flavours/glitch/actions/markers';
 import { DOMAIN_BLOCK_SUCCESS } from 'flavours/glitch/actions/domain_blocks';
 import { TIMELINE_DELETE, TIMELINE_DISCONNECT } from 'flavours/glitch/actions/timelines';
 import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
@@ -104,7 +107,7 @@ const expandNormalizedNotifications = (state, notifications, next, isLoadingRece
         mutable.update('lastReadId', id => compareId(id, items.first().get('id')) > 0 ? id : items.first().get('id'));
       }
     } else {
-      mutable.update('unread', unread => unread + items.filter(item => compareId(item.get('id'), lastReadId) > 0).size);
+      mutable.update('unread', unread => unread + items.count(item => compareId(item.get('id'), lastReadId) > 0));
     }
 
     if (!next) {
@@ -197,10 +200,24 @@ const shouldCountUnreadNotifications = (state) => {
   return !(state.get('isTabVisible') && state.get('top') && state.get('mounted') > 0);
 };
 
+const recountUnread = (state, last_read_id) => {
+  return state.withMutations(mutable => {
+    if (compareId(last_read_id, mutable.get('lastReadId')) > 0) {
+      mutable.set('lastReadId', last_read_id);
+    }
+
+    if (state.get('unread') > 0 || shouldCountUnreadNotifications(state)) {
+      mutable.set('unread', mutable.get('pendingItems').count(item => item !== null) + mutable.get('items').count(item => item && compareId(item.get('id'), last_read_id) > 0));
+    }
+  });
+}
+
 export default function notifications(state = initialState, action) {
   let st;
 
   switch(action.type) {
+  case MARKERS_FETCH_SUCCESS:
+    return action.markers.notifications ? recountUnread(state, action.markers.notifications.last_read_id) : state;
   case NOTIFICATIONS_MOUNT:
     return updateMounted(state);
   case NOTIFICATIONS_UNMOUNT: