move more functionality to l10n pkg

Signed-off-by: jkoberg <jkoberg@owncloud.com>

ocis-pkg/l10n/l10n.go

@@ -2,10 +2,16 @@
 package l10n
 
 import (
+	"context"
+	"errors"
 	"io/fs"
 	"os"
 
 	"github.com/leonelquinteros/gotext"
+	"github.com/owncloud/ocis/v2/ocis-pkg/middleware"
+	settingssvc "github.com/owncloud/ocis/v2/protogen/gen/ocis/services/settings/v0"
+	"github.com/owncloud/ocis/v2/services/settings/pkg/store/defaults"
+	micrometadata "go-micro.dev/v4/metadata"
 )
 
 // Template marks a string as translatable
@@ -53,3 +59,32 @@ func (t Translator) Locale(locale string) *gotext.Locale {
 	}
 	return l
 }
+
+// MustGetUserLocale returns the locale the user wants to use, omitting errors
+func MustGetUserLocale(ctx context.Context, userID string, preferedLang string, vc settingssvc.ValueService) string {
+	if preferedLang != "" {
+		return preferedLang
+	}
+
+	locale, _ := GetUserLocale(ctx, userID, vc)
+	return locale
+}
+
+// GetUserLocale returns the locale of the user
+func GetUserLocale(ctx context.Context, userID string, vc settingssvc.ValueService) (string, error) {
+	resp, err := vc.GetValueByUniqueIdentifiers(
+		micrometadata.Set(ctx, middleware.AccountID, userID),
+		&settingssvc.GetValueByUniqueIdentifiersRequest{
+			AccountUuid: userID,
+			SettingId:   defaults.SettingUUIDProfileLanguage,
+		},
+	)
+	if err != nil {
+		return "", err
+	}
+	val := resp.GetValue().GetValue().GetListValue().GetValues()
+	if len(val) == 0 {
+		return "", errors.New("no language setting found")
+	}
+	return val[0].GetStringValue(), nil
+}