[CLD-8131] Convert Subscription History Reporting to a Job (#27800)

* Remove CloudFreeDeprecated feature flag

* Fixes for CI pipelines

* Remove CloudReverseTrial feature flag and accompanying code (#27676)

Co-authored-by: Mattermost Build <build@mattermost.com>

* Stashing

* Convert subscription history reporting into a daily job

* Update comments

* Fix pipeline, redundant varaible declaration removed

* Add debug logs for start/finish

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/app/server.go

@@ -498,6 +498,7 @@ func NewServer(options ...Option) (*Server, error) {
 
 func (s *Server) runJobs() {
 	s.runLicenseExpirationCheckJob()
+
 	s.Go(func() {
 		appInstance := New(ServerConnector(s.Channels()))
 		runDNDStatusExpireJob(appInstance)
@@ -530,6 +531,9 @@ func (s *Server) runJobs() {
 	s.Go(func() {
 		runConfigCleanupJob(s)
 	})
+	s.Go(func() {
+		runCloudUserCountReportJob(s)
+	})
 
 	if complianceI := s.Channels().Compliance; complianceI != nil {
 		go complianceI.StartComplianceDailyJob()
@@ -1234,6 +1238,13 @@ func doSecurity(s *Server) {
 	s.DoSecurityUpdateCheck()
 }
 
+// Reports activated user count to the CWS every 24 hours
+func runCloudUserCountReportJob(s *Server) {
+	model.CreateRecurringTask("Report user count for cloud subscription", func() {
+		s.doReportUserCountForCloudSubscriptionJob()
+	}, time.Hour*24)
+}
+
 func doTokenCleanup(s *Server) {
 	expiry := model.GetMillis() - model.MaxTokenExipryTime
 
@@ -1334,6 +1345,26 @@ func (s *Server) sendLicenseUpForRenewalEmail(users map[string]*model.User, lice
 	return nil
 }
 
+func (s *Server) doReportUserCountForCloudSubscriptionJob() {
+	s.LoadLicense()
+
+	if !s.License().IsCloud() {
+		return
+	}
+
+	mlog.Debug("Reporting daily user count for cloud subscription.")
+
+	appInstance := New(ServerConnector(s.Channels()))
+
+	_, err := appInstance.SendSubscriptionHistoryEvent("")
+
+	if err != nil {
+		mlog.Error("an error occurred during daily user count reporting", mlog.Err(err))
+	}
+
+	mlog.Debug("Daily user count reported for cloud subscription.")
+}
+
 func (s *Server) doLicenseExpirationCheck() {
 	s.LoadLicense()