[MM-10858] Channel Member Update Websocket Event (#13305)

* Channel Member update event

* Address PR comments and extend tests

* golang ci addressed

* Update api4/channel_test.go

Co-Authored-By: Ben Schumacher <ben.schumacher@mattermost.com>

api4/channel_test.go

@@ -1976,6 +1976,10 @@ func TestUpdateChannelMemberSchemeRoles(t *testing.T) {
 	th := Setup().InitBasic()
 	defer th.TearDown()
 	SystemAdminClient := th.SystemAdminClient
+	WebSocketClient, err := th.CreateWebSocketClient()
+	WebSocketClient.Listen()
+	require.Nil(t, err)
+
 	th.LoginBasic()
 
 	s1 := &model.SchemeRoles{
@@ -1986,6 +1990,21 @@ func TestUpdateChannelMemberSchemeRoles(t *testing.T) {
 	_, r1 := SystemAdminClient.UpdateChannelMemberSchemeRoles(th.BasicChannel.Id, th.BasicUser.Id, s1)
 	CheckNoError(t, r1)
 
+	timeout := time.After(600 * time.Millisecond)
+	waiting := true
+	for waiting {
+		select {
+		case event := <-WebSocketClient.EventChannel:
+			if event.Event == model.WEBSOCKET_EVENT_CHANNEL_MEMBER_UPDATED {
+				require.Equal(t, model.WEBSOCKET_EVENT_CHANNEL_MEMBER_UPDATED, event.Event)
+				waiting = false
+			}
+		case <-timeout:
+			require.Fail(t, "Should have received event channel member websocket event and not timedout")
+			waiting = false
+		}
+	}
+
 	tm1, rtm1 := SystemAdminClient.GetChannelMember(th.BasicChannel.Id, th.BasicUser.Id, "")
 	CheckNoError(t, rtm1)
 	assert.Equal(t, false, tm1.SchemeGuest)

app/channel.go

@@ -755,6 +755,11 @@ func (a *App) UpdateChannelMemberSchemeRoles(channelId string, userId string, is
 		return nil, err
 	}
 
+	// Notify the clients that the member notify props changed
+	message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_CHANNEL_MEMBER_UPDATED, "", "", userId, nil)
+	message.Add("channelMember", member.ToJson())
+	a.Publish(message)
+
 	a.InvalidateCacheForUser(userId)
 	return member, nil
 }