From 00d3ff36419a521a8860f4396f5f6c85b29f8906 Mon Sep 17 00:00:00 2001
From: 5andi5 <5andi5@inbox.lv>
Date: Mon, 26 Jun 2023 20:56:55 +0300
Subject: [PATCH] Resolve bank UI language from I18n locale

---
 lib/omniauth/strategies/swedbank.rb | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/lib/omniauth/strategies/swedbank.rb b/lib/omniauth/strategies/swedbank.rb
index 5ef5666..ff88517 100644
--- a/lib/omniauth/strategies/swedbank.rb
+++ b/lib/omniauth/strategies/swedbank.rb
@@ -110,6 +110,8 @@ def request_phase
           return fail!(:private_key_load_err, e)
         end
 
+        set_locale_from_query_param
+
         form = OmniAuth::Form.new(:title => I18n.t('omniauth.swedbank.please_wait'), :url => options.site)
 
         {
@@ -120,7 +122,7 @@ def request_phase
           'VK_NONCE' => stamp,
           'VK_RETURN' => callback_url,
           'VK_MAC' => signature(priv_key),
-          'VK_LANG' => 'LAT',
+          'VK_LANG' => resolve_bank_ui_language,
           'VK_ENCODING' => 'UTF-8'
         }.each do |name, val|
           form.html "<input type=\"hidden\" name=\"#{name}\" value=\"#{escape(val)}\" />"
@@ -139,6 +141,23 @@ def request_phase
 
       private
 
+      def set_locale_from_query_param
+        locale = request.params['locale']
+        if (locale != nil && locale.strip != '' && I18n.locale_available?(locale))
+          I18n.locale = locale
+        end
+      end
+
+      def resolve_bank_ui_language
+        case I18n.locale
+        when :ru then 'RUS'
+        when :en then 'ENG'
+        when :et then 'EST'
+        when :lt then 'LIT'
+        else 'LAT'
+        end
+      end
+
       def escape(html_attribute_value)
          CGI.escapeHTML(html_attribute_value) unless html_attribute_value.nil?
       end