convert statuses.visibility and notifications.notification_type columns from type string -> int for performance / space savings

internal/processing/preferences.go

@@ -46,7 +46,7 @@ func (p *Processor) PreferencesGet(ctx context.Context, accountID string) (*apim
 func mastoPrefVisibility(vis gtsmodel.Visibility) string {
 	switch vis {
 	case gtsmodel.VisibilityPublic, gtsmodel.VisibilityDirect:
-		return string(vis)
+		return vis.String()
 	case gtsmodel.VisibilityUnlocked:
 		return "unlisted"
 	default:

internal/processing/status/create.go

@@ -372,7 +372,7 @@ func (p *Processor) processVisibility(
 
 	// Fall back to account default, set
 	// this back on the form for later use.
-	case accountDefaultVis != "":
+	case accountDefaultVis != 0:
 		status.Visibility = accountDefaultVis
 		form.Visibility = p.converter.VisToAPIVis(ctx, accountDefaultVis)
 

internal/processing/timeline/notification.go

@@ -41,8 +41,8 @@ func (p *Processor) NotificationsGet(
 	sinceID string,
 	minID string,
 	limit int,
-	types []string,
-	excludeTypes []string,
+	types []gtsmodel.NotificationType,
+	excludeTypes []gtsmodel.NotificationType,
 ) (*apimodel.PageableResponse, gtserror.WithCode) {
 	notifs, err := p.state.DB.GetAccountNotifications(
 		ctx,

internal/processing/workers/surfacenotify.go

@@ -542,7 +542,7 @@ func getNotifyLockURI(
 ) string {
 	builder := strings.Builder{}
 	builder.WriteString("notification:?")
-	builder.WriteString("type=" + string(notificationType))
+	builder.WriteString("type=" + notificationType.String())
 	builder.WriteString("&target=" + targetAccount.URI)
 	builder.WriteString("&origin=" + originAccount.URI)
 	if statusID != "" {