MM-59360 add telemetry for paid features related to guests (#28295)

* add telemetry for paid features related to guests

---------

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

server/platform/services/telemetry/telemetry.go

@@ -93,6 +93,17 @@ const (
 	TrackPlugins  = "plugins"
 )
 
+type TrackSKU string
+
+const (
+	TrackProfessionalSKU TrackSKU = "professional"
+	TrackEnterpriseSKU   TrackSKU = "enterprise"
+)
+
+type TrackFeature string
+
+const TrackGuestFeature TrackFeature = "guest_accounts"
+
 type ServerIface interface {
 	Config() *model.Config
 	IsLeader() bool
@@ -119,6 +130,15 @@ type RudderConfig struct {
 	DataplaneURL string
 }
 
+type EventFeature struct {
+	Name TrackFeature `json:"name"`
+	SKUS []TrackSKU   `json:"skus"`
+}
+
+var featureSKUS = map[TrackFeature][]TrackSKU{
+	TrackGuestFeature: {TrackProfessionalSKU, TrackEnterpriseSKU},
+}
+
 func New(srv ServerIface, dbStore store.Store, searchEngine *searchengine.Broker, log *mlog.Logger, verbose bool) (*TelemetryService, error) {
 	service := &TelemetryService{
 		srv:          srv,
@@ -202,7 +222,7 @@ func (ts *TelemetryService) sendDailyTelemetry(override bool) {
 func (ts *TelemetryService) SendTelemetry(event string, properties map[string]any) {
 	if ts.rudderClient != nil {
 		var context *rudder.Context
-		// if we are part of a cloud installation, add it's ID to the tracked event's context
+		// if we are part of a cloud installation, add its ID to the tracked event's context
 		if installationId := os.Getenv("MM_CLOUD_INSTALLATION_ID"); installationId != "" {
 			context = &rudder.Context{Traits: map[string]any{"installationId": installationId}}
 		}
@@ -218,6 +238,38 @@ func (ts *TelemetryService) SendTelemetry(event string, properties map[string]an
 	}
 }
 
+func (ts *TelemetryService) SendTelemetryForFeature(featureName TrackFeature, event string, properties map[string]any) {
+	if ts.rudderClient != nil {
+		skus, ok := featureSKUS[featureName]
+		if !ok {
+			skus = []TrackSKU{}
+			mlog.Warn("Telemetry SKUS are not defined for the feature", mlog.String("feature", featureName))
+		}
+		feature := EventFeature{
+			Name: featureName,
+			SKUS: skus,
+		}
+
+		var context *rudder.Context = &rudder.Context{
+			Extra: map[string]any{"feature": feature},
+		}
+		// if we are part of a cloud installation, add its ID to the tracked event's context
+		if installationId := os.Getenv("MM_CLOUD_INSTALLATION_ID"); installationId != "" {
+			context.Traits = map[string]any{"installationId": installationId}
+		}
+
+		err := ts.rudderClient.Enqueue(rudder.Track{
+			Event:      event,
+			UserId:     ts.TelemetryID,
+			Properties: properties,
+			Context:    context,
+		})
+		if err != nil {
+			ts.log.Warn("Error sending telemetry for feature", mlog.Err(err))
+		}
+	}
+}
+
 func isDefaultArray(setting, defaultValue []string) bool {
 	if len(setting) != len(defaultValue) {
 		return false