feat: site languages, setup and site URL settings

internal/domain/localization/localizationDomain.go

@@ -0,0 +1,47 @@
+package localization
+
+import "errors"
+
+var (
+	ErrSetupRequired       = errors.New("the site has no confirmed default language")
+	ErrLanguagesChanged    = errors.New("the languages changed since they were read")
+	ErrLanguageInUse       = errors.New("a language still used by a version cannot be removed")
+	ErrDefaultNotEnabled   = errors.New("the default language must be one of the enabled languages")
+	ErrNoEnabledLanguage   = errors.New("at least one language must stay enabled")
+	ErrDuplicateLanguage   = errors.New("the same language is listed twice")
+	ErrInvalidSocialLocale = errors.New("invalid social locale")
+	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")
+)
+
+const (
+	SocialLocaleSet     = "set"
+	SocialLocaleDerived = "derived"
+	SocialLocaleNotSet  = "not_set"
+)
+
+type Row struct {
+	Tag          string
+	IsDefault    bool
+	Enabled      bool
+	Confirmed    bool
+	SocialLocale *string
+}
+
+type VersionCount struct {
+	Total     int
+	Published int
+	Trashed   int
+}
+
+type Entry struct {
+	Tag          string
+	Enabled      bool
+	SocialLocale *string
+}
+
+type Change struct {
+	Default   string
+	Languages []Entry
+}