Do not send push notifications for channels being actively viewed (#3931)

webapp/actions/post_actions.jsx

@@ -19,7 +19,7 @@ const Preferences = Constants.Preferences;
 export function handleNewPost(post, msg) {
     if (ChannelStore.getCurrentId() === post.channel_id) {
         if (window.isActive) {
-            AsyncClient.updateLastViewedAt();
+            AsyncClient.updateLastViewedAt(null, false);
         } else {
             AsyncClient.getChannel(post.channel_id);
         }

webapp/actions/websocket_actions.jsx

@@ -174,7 +174,7 @@ function handlePostEditEvent(msg) {
     // Update channel state
     if (ChannelStore.getCurrentId() === msg.channel_id) {
         if (window.isActive) {
-            AsyncClient.updateLastViewedAt();
+            AsyncClient.updateLastViewedAt(null, false);
         }
     }
 }

webapp/client/client.jsx

@@ -1003,6 +1003,16 @@ export default class Client {
             end(this.handleResponse.bind(this, 'getStatuses', success, error));
     }
 
+    setActiveChannel(id, success, error) {
+        request.
+            post(`${this.getUsersRoute()}/status/set_active_channel`).
+            set(this.defaultHeaders).
+            type('application/json').
+            accept('application/json').
+            send({channel_id: id}).
+            end(this.handleResponse.bind(this, 'setActiveChannel', success, error));
+    }
+
     verifyEmail(uid, hid, success, error) {
         request.
             post(`${this.getUsersRoute()}/verify_email`).
@@ -1172,12 +1182,13 @@ export default class Client {
         this.track('api', 'api_channels_delete');
     }
 
-    updateLastViewedAt(channelId, success, error) {
+    updateLastViewedAt(channelId, active, success, error) {
         request.
             post(`${this.getChannelNeededRoute(channelId)}/update_last_viewed_at`).
             set(this.defaultHeaders).
             type('application/json').
             accept('application/json').
+            send({active}).
             end(this.handleResponse.bind(this, 'updateLastViewedAt', success, error));
     }
 

webapp/components/needs_team.jsx

@@ -94,6 +94,7 @@ export default class NeedsTeam extends React.Component {
 
         $(window).on('blur', () => {
             window.isActive = false;
+            AsyncClient.setActiveChannel('');
         });
 
         Utils.applyTheme(this.state.theme);

webapp/components/post_view/post_view_cache.jsx

@@ -4,6 +4,7 @@
 import PostViewController from './post_view_controller.jsx';
 
 import ChannelStore from 'stores/channel_store.jsx';
+import * as AsyncClient from 'utils/async_client.jsx';
 
 import React from 'react';
 
@@ -28,6 +29,7 @@ export default class PostViewCache extends React.Component {
     }
 
     componentWillUnmount() {
+        AsyncClient.setActiveChannel('');
         ChannelStore.removeChangeListener(this.onChannelChange);
     }
 

webapp/tests/client_channel.test.jsx

@@ -216,6 +216,7 @@ describe('Client.Channels', function() {
             var channel = TestHelper.basicChannel();
             TestHelper.basicClient().updateLastViewedAt(
                 channel.id,
+                true,
                 function(data) {
                     assert.equal(data.id, channel.id);
                     done();

webapp/tests/client_user.test.jsx

@@ -509,6 +509,23 @@ describe('Client.User', function() {
     });
     */
 
+    it('setActiveChannel', function(done) {
+        TestHelper.initBasic(() => {
+            var ids = [];
+            ids.push(TestHelper.basicUser().id);
+
+            TestHelper.basicClient().setActiveChannel(
+                TestHelper.basicChannel().id,
+                function() {
+                    done();
+                },
+                function(err) {
+                    done(new Error(err.message));
+                }
+            );
+        });
+    });
+
     it('verifyEmail', function(done) {
         TestHelper.initBasic(() => {
             TestHelper.basicClient().enableLogErrorsToConsole(false); // Disabling since this unit test causes an error

webapp/utils/async_client.jsx

@@ -113,7 +113,7 @@ export function getChannel(id) {
     );
 }
 
-export function updateLastViewedAt(id) {
+export function updateLastViewedAt(id, active) {
     let channelId;
     if (id) {
         channelId = id;
@@ -129,9 +129,17 @@ export function updateLastViewedAt(id) {
         return;
     }
 
+    let isActive;
+    if (active == null) {
+        isActive = true;
+    } else {
+        isActive = active;
+    }
+
     callTracker[`updateLastViewed${channelId}`] = utils.getTimestamp();
     Client.updateLastViewedAt(
         channelId,
+        isActive,
         () => {
             callTracker[`updateLastViewed${channelId}`] = 0;
             ErrorStore.clearLastError();
@@ -753,6 +761,24 @@ export function getStatuses() {
     );
 }
 
+export function setActiveChannel(channelId) {
+    if (isCallInProgress(`setActiveChannel${channelId}`)) {
+        return;
+    }
+
+    callTracker[`setActiveChannel${channelId}`] = utils.getTimestamp();
+    Client.setActiveChannel(
+        channelId,
+        () => {
+            callTracker[`setActiveChannel${channelId}`] = 0;
+        },
+        (err) => {
+            callTracker[`setActiveChannel${channelId}`] = 0;
+            dispatchError(err, 'setActiveChannel');
+        }
+    );
+}
+
 export function getMyTeam() {
     if (isCallInProgress('getMyTeam')) {
         return null;