refac: article reads, story delete, no leaks, stored SEO status, rate limit, cleanup (%site%, article repo split, old lang repos, one default per site rule to domain)

internal/domain/localization/localizationDomain.go

@@ -13,6 +13,7 @@ var (
 	ErrSetupInProgress     = errors.New("another language setup is running")
 	ErrSetupIncomplete     = errors.New("every pending site needs a language")
 	ErrDuplicateSite       = errors.New("the same site is listed twice")
+	ErrSingleDefault       = errors.New("a site has exactly one default language")
 )
 
 const (

internal/domain/localization/localizationRules.go

@@ -128,6 +128,34 @@ func MissingTags(rows []Row, tags []string) []string {
 	return missing
 }
 
+func ConfirmedDefaultTag(rows []Row) string {
+	if NeedsSetup(rows) {
+		return language.Unassigned
+	}
+	return DefaultTag(rows)
+}
+
+func SiteTextAllowed(defaultTag string, tag string) bool {
+	return tag == language.Unassigned || tag == defaultTag
+}
+
+func PublicTag(rows []Row, tag string) bool {
+	return tag != language.Unassigned && EnabledTag(rows, tag)
+}
+
+func RequireSingleDefault(rows []Row) error {
+	defaults := 0
+	for _, row := range rows {
+		if row.IsDefault {
+			defaults++
+		}
+	}
+	if defaults != 1 {
+		return ErrSingleDefault
+	}
+	return nil
+}
+
 func DefaultTag(rows []Row) string {
 	for _, row := range rows {
 		if row.IsDefault {