MM-9274- Sort Users in Channel by status (#8181)

* sort by lastActivity

* added status ordering to Users

* sort offline before dnd

* remove data not needed

* added seperate call for when order=‘status’ is on GetUser request

* remove PrintLn

* styling fix

* remove mistake

* mistake 2

* better comment

* explicit if statemnt

* writing tests

* removed manually added mocks

* generated mock

* ICU-668 Added unit tests

* style fix

* sort by lastActivity

* added status ordering to Users

* sort offline before dnd

* remove data not needed

* added seperate call for when order=‘status’ is on GetUser request

* remove PrintLn

* styling fix

* remove mistake

* mistake 2

* better comment

* explicit if statemnt

* writing tests

* removed manually added mocks

* generated mock

* ICU-668 Added unit tests

* style fix

* reverse dnd and offline

* Fixed app.SaveStatusAndBroadcast

* Fixed incorrect merge

* Fixing incorrect merge again

app/status.go

@@ -236,16 +236,7 @@ func (a *App) SetStatusOffline(userId string, manual bool) {
 
 	status = &model.Status{UserId: userId, Status: model.STATUS_OFFLINE, Manual: manual, LastActivityAt: model.GetMillis(), ActiveChannel: ""}
 
-	a.AddStatusCache(status)
-
-	if result := <-a.Srv.Store.Status().SaveOrUpdate(status); result.Err != nil {
-		l4g.Error(utils.T("api.status.save_status.error"), userId, result.Err)
-	}
-
-	event := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_STATUS_CHANGE, "", "", status.UserId, nil)
-	event.Add("status", model.STATUS_OFFLINE)
-	event.Add("user_id", status.UserId)
-	a.Publish(event)
+	a.SaveAndBroadcastStatus(status)
 }
 
 func (a *App) SetStatusAwayIfNeeded(userId string, manual bool) {
@@ -277,16 +268,7 @@ func (a *App) SetStatusAwayIfNeeded(userId string, manual bool) {
 	status.Manual = manual
 	status.ActiveChannel = ""
 
-	a.AddStatusCache(status)
-
-	if result := <-a.Srv.Store.Status().SaveOrUpdate(status); result.Err != nil {
-		l4g.Error(utils.T("api.status.save_status.error"), userId, result.Err)
-	}
-
-	event := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_STATUS_CHANGE, "", "", status.UserId, nil)
-	event.Add("status", model.STATUS_AWAY)
-	event.Add("user_id", status.UserId)
-	a.Publish(event)
+	a.SaveAndBroadcastStatus(status)
 }
 
 func (a *App) SetStatusDoNotDisturb(userId string) {
@@ -303,16 +285,22 @@ func (a *App) SetStatusDoNotDisturb(userId string) {
 	status.Status = model.STATUS_DND
 	status.Manual = true
 
+	a.SaveAndBroadcastStatus(status)
+}
+
+func (a *App) SaveAndBroadcastStatus(status *model.Status) *model.AppError {
 	a.AddStatusCache(status)
 
 	if result := <-a.Srv.Store.Status().SaveOrUpdate(status); result.Err != nil {
-		l4g.Error(utils.T("api.status.save_status.error"), userId, result.Err)
+		l4g.Error(utils.T("api.status.save_status.error"), status.UserId, result.Err)
 	}
 
 	event := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_STATUS_CHANGE, "", "", status.UserId, nil)
-	event.Add("status", model.STATUS_DND)
+	event.Add("status", status.Status)
 	event.Add("user_id", status.UserId)
 	a.Publish(event)
+
+	return nil
 }
 
 func GetStatusFromCache(userId string) *model.Status {