Enter ParameterizedMessage

src/server/i18n.cpp

@@ -106,4 +106,9 @@ std::string expandParameterizedString(const std::string& lang,
 
 } // namespace i18n
 
+std::string ParameterizedMessage::getText(const std::string& lang) const
+{
+  return i18n::expandParameterizedString(lang, msgId, params);
+}
+
 } // namespace kiwix

src/server/i18n.h

@@ -52,6 +52,24 @@ std::string expandParameterizedString(const std::string& lang,
 
 } // namespace i18n
 
+struct ParameterizedMessage
+{
+public: // types
+  typedef kainjow::mustache::object Parameters;
+
+public: // functions
+  ParameterizedMessage(const std::string& msgId, const Parameters& params)
+    : msgId(msgId)
+    , params(params)
+  {}
+
+  std::string getText(const std::string& lang) const;
+
+private: // data
+  const std::string msgId;
+  const Parameters  params;
+};
+
 } // namespace kiwix
 
 #endif // KIWIX_SERVER_I18N

src/server/response.cpp

@@ -21,7 +21,6 @@
 #include "request_context.h"
 #include "internalServer.h"
 #include "kiwixlib-resources.h"
-#include "i18n.h"
 
 #include "tools/regexTools.h"
 #include "tools/stringTools.h"
@@ -132,12 +131,7 @@ HTTP404HtmlResponse::HTTP404HtmlResponse(const InternalServer& server,
 HTTPErrorHtmlResponse& HTTP404HtmlResponse::operator+(UrlNotFoundMsg /*unused*/)
 {
   const std::string requestUrl = m_request.get_full_url();
-  const auto urlNotFoundMsg = i18n::expandParameterizedString(
-      "en", // FIXME: hardcoded language
-      "url-not-found",
-      {{"url", requestUrl}}
-  );
-  return *this + urlNotFoundMsg;
+  return *this + ParameterizedMessage("url-not-found", {{"url", requestUrl}});
 }
 
 HTTPErrorHtmlResponse& HTTPErrorHtmlResponse::operator+(const std::string& msg)
@@ -146,6 +140,12 @@ HTTPErrorHtmlResponse& HTTPErrorHtmlResponse::operator+(const std::string& msg)
   return *this;
 }
 
+HTTPErrorHtmlResponse& HTTPErrorHtmlResponse::operator+(const ParameterizedMessage& details)
+{
+  return *this + details.getText(m_request.get_user_language());
+}
+
+
 HTTP400HtmlResponse::HTTP400HtmlResponse(const InternalServer& server,
                                          const RequestContext& request)
   : HTTPErrorHtmlResponse(server,

src/server/response.h

@@ -28,6 +28,7 @@
 #include "byte_range.h"
 #include "entry.h"
 #include "etag.h"
+#include "i18n.h"
 
 extern "C" {
 #include "microhttpd_wrapper.h"
@@ -189,6 +190,7 @@ struct HTTPErrorHtmlResponse : ContentResponseBlueprint
 
   using ContentResponseBlueprint::operator+;
   HTTPErrorHtmlResponse& operator+(const std::string& msg);
+  HTTPErrorHtmlResponse& operator+(const ParameterizedMessage& errorDetails);
 };
 
 class UrlNotFoundMsg {};