Cloud Freemium - Integrations (#20185)

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/usage.go

@@ -10,6 +10,41 @@ import (
 	"github.com/mattermost/mattermost-server/v6/utils"
 )
 
+// CheckFreemiumLimitsForConfigSave returns an error if the configuration being saved violates the Cloud Freemium limits
+func (a *App) CheckFreemiumLimitsForConfigSave(oldConfig, newConfig *model.Config) *model.AppError {
+	if !a.Config().FeatureFlags.CloudFree {
+		return nil
+	}
+
+	appErr := a.checkIntegrationLimitsForConfigSave(oldConfig, newConfig)
+	if appErr != nil {
+		return appErr
+	}
+
+	return nil
+}
+
+// GetIntegrationsUsage returns usage information on enabled integrations
+func (a *App) GetIntegrationsUsage() (*model.IntegrationsUsage, *model.AppError) {
+	return a.ch.getIntegrationsUsage()
+}
+
+func (ch *Channels) getIntegrationsUsage() (*model.IntegrationsUsage, *model.AppError) {
+	installed, appErr := ch.getInstalledIntegrations()
+	if appErr != nil {
+		return nil, appErr
+	}
+
+	var count = 0
+	for _, i := range installed {
+		if i.Enabled {
+			count++
+		}
+	}
+
+	return &model.IntegrationsUsage{Enabled: count}, nil
+}
+
 // GetPostsUsage returns "rounded off" total posts count like returns 900 instead of 987
 func (a *App) GetPostsUsage() (int64, *model.AppError) {
 	count, err := a.Srv().Store.Post().AnalyticsPostCount(&model.PostCountOptions{ExcludeDeleted: true})