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

1 files changed, 48 insertions, 18 deletions

diff --git a/internal/render/render.go b/internal/render/render.go
index b8d778c..c5a2ab0 100644
--- a/internal/render/render.go
+++ b/internal/render/render.go
@@ -9,17 +9,43 @@ import (
 	"strings"
 
 	"github.com/lukaszkasprzak/lectio/internal/bible"
+	"github.com/lukaszkasprzak/lectio/internal/i18n"
 	"github.com/lukaszkasprzak/lectio/internal/liturgy"
 )
 
-// versionLabels names each version for column headers / prose. Ported
-// verbatim from ewangelia.py VERSION_LABELS.
-var versionLabels = map[string]string{
-	"pl":  "Polski (niedziela.pl)",
-	"wuj": "Wujek (pol.)",
-	"vul": "Wulgata (lac.)",
-	"grb": "Grecki",
-	"drb": "Douay-Rheims (ang.)",
+// versionLabel returns version's column-header/prose label in lang (see
+// internal/i18n.Get), falling back to the bare version code if lang has no
+// entry for it. lang="pl" reproduces ewangelia.py's original VERSION_LABELS
+// exactly.
+func versionLabel(version, lang string) string {
+	if l, ok := i18n.Get(lang).Version[version]; ok {
+		return l
+	}
+	return version
+}
+
+// LocalizeHeading swaps a modern (niedziela.pl) section heading's leading
+// label word for its lang translation, keeping the rest of the heading (the
+// parenthetical citation, exactly as scraped) untouched: e.g.
+// "Ewangelia (J 20, 1. 11-18)" with partID "ewangelia" and lang "en" becomes
+// "Gospel (J 20, 1. 11-18)". It only ever localises the label word, never
+// the citation or the verse text.
+//
+// It is a safe no-op (returns heading unchanged) unless all of: lang is
+// "en", partID names a known modern-lectionary part (see
+// internal/i18n.UI.PartLabel), and heading actually starts with that part's
+// Polish label -- which excludes traditional (missalemeum) headings, already
+// in the requested language, and anything unrecognised.
+func LocalizeHeading(heading, partID, lang string) string {
+	if lang != "en" {
+		return heading
+	}
+	plLabel, ok := i18n.Get("pl").PartLabel[partID]
+	if !ok || !strings.HasPrefix(heading, plLabel) {
+		return heading
+	}
+	enLabel := i18n.Get(lang).PartLabel[partID]
+	return enLabel + heading[len(plLabel):]
 }
 
 // versionSystem maps a bible version to the Psalter system bible.ToEnglishRef
@@ -49,8 +75,10 @@ const incipit = "Słowa Ewangelii"
 // lectionary selects how sec.Citation is read: "new" (modern/niedziela.pl)
 // citations are Polish and go through bible.ToEnglishRef; "traditional"
 // (missalemeum) citations are already English kjv-style and are used as-is.
-func GatherVersion(version string, sec liturgy.Section, lectionary string) (label string, blocks []string) {
-	label = versionLabels[version]
+// lang selects the UI chrome language the label comes from (see
+// internal/i18n); it never affects the verse text/citation itself.
+func GatherVersion(version string, sec liturgy.Section, lectionary, lang string) (label string, blocks []string) {
+	label = versionLabel(version, lang)
 	if version == "pl" {
 		return label, gatherPL(sec)
 	}
@@ -105,9 +133,10 @@ func resolveRef(version string, sec liturgy.Section, lectionary string) (string,
 // GatherVerses returns one version's verses for a section as raw bible.Verse
 // structs (for column/interlinear alignment). versified is false for "pl"
 // (paragraph text, no verse numbers) and on any resolution/lookup failure --
-// callers fall back to GatherVersion's string blocks for those.
-func GatherVerses(version string, sec liturgy.Section, lectionary string) (label string, verses []bible.Verse, versified bool) {
-	label = versionLabels[version]
+// callers fall back to GatherVersion's string blocks for those. lang selects
+// the UI chrome language the label comes from, same as GatherVersion.
+func GatherVerses(version string, sec liturgy.Section, lectionary, lang string) (label string, verses []bible.Verse, versified bool) {
+	label = versionLabel(version, lang)
 	if version == "pl" {
 		return label, nil, false
 	}
@@ -177,16 +206,17 @@ func OfflineVersions(versions []string) []string {
 }
 
 // Compare lays the versions of one reading section out as parallel columns,
-// side by side, wrapped to fit width. Ports render_compare.
-func Compare(secs []liturgy.Section, versions []string, width int, lectionary string) string {
+// side by side, wrapped to fit width. Ports render_compare. lang selects the
+// column-header label language (see GatherVersion).
+func Compare(secs []liturgy.Section, versions []string, width int, lectionary, lang string) string {
 	var out []string
 	for _, sec := range secs {
-		out = append(out, compareSection(sec, versions, width, lectionary))
+		out = append(out, compareSection(sec, versions, width, lectionary, lang))
 	}
 	return strings.Join(out, "\n\n")
 }
 
-func compareSection(sec liturgy.Section, versions []string, width int, lectionary string) string {
+func compareSection(sec liturgy.Section, versions []string, width int, lectionary, lang string) string {
 	type column struct {
 		label string
 		lines []string
@@ -205,7 +235,7 @@ func compareSection(sec liturgy.Section, versions []string, width int, lectionar
 	cols := make([]column, 0, n)
 	height := 0
 	for _, v := range versions {
-		label, blocks := GatherVersion(v, sec, lectionary)
+		label, blocks := GatherVersion(v, sec, lectionary, lang)
 		var lines []string
 		for _, b := range blocks {
 			lines = append(lines, strings.Split(wrap(b, w), "\n")...)