chore: move the go code into a subfolder

apps/api/internal/i18n/bundle.go

@@ -0,0 +1,80 @@
+package i18n
+
+import (
+	"encoding/json"
+	"io"
+	"io/fs"
+	"net/http"
+	"path/filepath"
+	"strings"
+
+	"github.com/BurntSushi/toml"
+	"github.com/nicksnyder/go-i18n/v2/i18n"
+	"github.com/zitadel/logging"
+	"golang.org/x/text/language"
+	"sigs.k8s.io/yaml"
+
+	"github.com/zitadel/zitadel/internal/domain"
+)
+
+const i18nPath = "/i18n"
+
+var translationMessages = map[Namespace]map[language.Tag]*i18n.MessageFile{
+	ZITADEL:      make(map[language.Tag]*i18n.MessageFile),
+	LOGIN:        make(map[language.Tag]*i18n.MessageFile),
+	NOTIFICATION: make(map[language.Tag]*i18n.MessageFile),
+}
+
+func init() {
+	for ns := range translationMessages {
+		loadTranslationsFromNamespace(ns)
+	}
+}
+
+func newBundle(ns Namespace, defaultLanguage language.Tag, allowedLanguages []language.Tag) (*i18n.Bundle, error) {
+	bundle := i18n.NewBundle(defaultLanguage)
+
+	for lang, file := range translationMessages[ns] {
+		if err := domain.LanguageIsAllowed(false, allowedLanguages, lang); err != nil {
+			continue
+		}
+		bundle.MustAddMessages(lang, file.Messages...)
+	}
+
+	return bundle, nil
+}
+
+func loadTranslationsFromNamespace(ns Namespace) {
+	dir := LoadFilesystem(ns)
+	i18nDir, err := dir.Open(i18nPath)
+	logging.WithFields("namespace", ns).OnError(err).Panic("unable to open translation files")
+	defer i18nDir.Close()
+	files, err := i18nDir.Readdir(0)
+	logging.WithFields("namespace", ns).OnError(err).Panic("unable to read translation files")
+	for _, file := range files {
+		loadTranslationsFromFile(ns, file, dir)
+	}
+}
+
+func loadTranslationsFromFile(ns Namespace, fileInfo fs.FileInfo, dir http.FileSystem) {
+	file, err := dir.Open("/i18n/" + fileInfo.Name())
+	logging.WithFields("namespace", ns, "file", fileInfo.Name()).OnError(err).Panic("unable to open translation file")
+	defer file.Close()
+
+	content, err := io.ReadAll(file)
+	logging.WithFields("namespace", ns, "file", fileInfo.Name()).OnError(err).Panic("unable to read translation file")
+
+	unmarshaler := map[string]i18n.UnmarshalFunc{
+		"yaml": func(data []byte, v interface{}) error { return yaml.Unmarshal(data, v) },
+		"json": json.Unmarshal,
+		"toml": toml.Unmarshal,
+	}
+
+	messageFile, err := i18n.ParseMessageFileBytes(content, fileInfo.Name(), unmarshaler)
+	logging.WithFields("namespace", ns, "file", fileInfo.Name()).OnError(err).Panic("unable to parse translation file")
+
+	fileLang, _ := strings.CutSuffix(fileInfo.Name(), filepath.Ext(fileInfo.Name()))
+	lang := language.Make(fileLang)
+
+	translationMessages[ns][lang] = messageFile
+}