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

3 files changed, 58 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
diff --git a/internal/config/config.toml b/internal/config/config.toml
index 3554435..c1f97db 100644
--- a/internal/config/config.toml
+++ b/internal/config/config.toml
@@ -6,6 +6,7 @@ default_version  = "pl"     # TUI start / `lectio show` default
 width            = 0        # CLI wrap width; 0 = detect terminal
 all              = false    # default to all parts (true) or just the gospel (false)
 offline          = false    # true = never fetch; read only harvested sigla + cache
+ui_language      = "en"      # interface language (labels/keybar/banner): "en" or "pl". Readings stay source-language.
 web_theme        = "transfiguration"  # default lectio-web theme (built-in order/season name, or a user theme in ~/.config/lectio/themes/)
 web_port         = 0        # lectio-web port; 0 = try 1099, then any free port
 web_display      = "horizontal"  # default lectio-web layout ("uklad"): "horizontal" (stacked), "vertical" (columns), "interlinear" (verse-by-verse)
diff --git a/internal/config/config_test.go b/internal/config/config_test.go
index ff513ea..616f0cd 100644
--- a/internal/config/config_test.go
+++ b/internal/config/config_test.go
@@ -107,6 +107,43 @@ func TestWebDisplayNormalizesUnknown(t *testing.T) {
 	}
 }
 
+func TestUILanguageDefault(t *testing.T) {
+	def := Default()
+	if def.UILanguage != "en" {
+		t.Errorf("UILanguage default wrong: got %q, want %q", def.UILanguage, "en")
+	}
+}
+
+func TestUILanguageLoadsPL(t *testing.T) {
+	dir := t.TempDir()
+	t.Setenv("XDG_CONFIG_HOME", dir)
+	os.MkdirAll(filepath.Join(dir, "lectio"), 0o755)
+	os.WriteFile(filepath.Join(dir, "lectio", "config.toml"),
+		[]byte("ui_language = \"pl\"\n"), 0o644)
+	cfg, err := Load()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if cfg.UILanguage != "pl" {
+		t.Errorf("UILanguage = %q, want %q", cfg.UILanguage, "pl")
+	}
+}
+
+func TestUILanguageNormalizesUnknown(t *testing.T) {
+	dir := t.TempDir()
+	t.Setenv("XDG_CONFIG_HOME", dir)
+	os.MkdirAll(filepath.Join(dir, "lectio"), 0o755)
+	os.WriteFile(filepath.Join(dir, "lectio", "config.toml"),
+		[]byte("ui_language = \"bogus\"\n"), 0o644)
+	cfg, err := Load()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if cfg.UILanguage != "en" {
+		t.Errorf("UILanguage = %q, want %q (normalized from bogus)", cfg.UILanguage, "en")
+	}
+}
+
 func TestPartShown(t *testing.T) {
 	var empty Config
 	if !empty.PartShown("new", "psalm") {