i18n: ui_language config (default en) for UI chrome across cli/tui/web; version labels localised

1 files changed, 20 insertions, 0 deletions

diff --git a/internal/config/config.go b/internal/config/config.go
index e501cf8..dd81544 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -51,6 +51,23 @@ func NormalizeDisplay(display string) string {
 	return d
 }
 
+// validUILanguages are the two UI chrome languages lectio understands.
+var validUILanguages = map[string]bool{
+	"en": true,
+	"pl": true,
+}
+
+// NormalizeUILanguage lower-cases lang and falls back to "en" when it is not
+// one of validUILanguages -- the same lenient style as NormalizeDisplay (no
+// error, just a safe default).
+func NormalizeUILanguage(lang string) string {
+	l := strings.ToLower(lang)
+	if !validUILanguages[l] {
+		return "en"
+	}
+	return l
+}
+
 // Config holds lectio's user-configurable settings.
 type Config struct {
 	SchemaVersion   int                        `toml:"schema_version"`
@@ -61,6 +78,7 @@ type Config struct {
 	Width           int                        `toml:"width"`
 	All             bool                       `toml:"all"`
 	Offline         bool                       `toml:"offline"`
+	UILanguage      string                     `toml:"ui_language"`
 	WebTheme        string                     `toml:"web_theme"`
 	WebPort         int                        `toml:"web_port"`
 	WebDisplay      string                     `toml:"web_display"`
@@ -91,6 +109,7 @@ func Default() Config {
 		Width:           0,
 		All:             false,
 		Offline:         false,
+		UILanguage:      "en",
 		WebTheme:        "transfiguration",
 		WebPort:         0,
 		WebDisplay:      "horizontal",
@@ -162,6 +181,7 @@ func Load() (Config, error) {
 		return def, nil
 	}
 	cfg.WebDisplay = NormalizeDisplay(cfg.WebDisplay)
+	cfg.UILanguage = NormalizeUILanguage(cfg.UILanguage)
 
 	if err := validate(cfg); err != nil {
 		return Config{}, err