Move the redirection response in its own class.

The redirection is the easiest to move, let's start with this one.

src/server/internalServer.cpp

@@ -557,9 +557,8 @@ std::unique_ptr<Response> InternalServer::handle_search(const RequestContext& re
 
     /* If article found then redirect directly to it */
     if (!patternCorrespondingUrl.empty()) {
-      auto response = Response::build(*this);
-      response->set_redirection(m_root + "/" + bookName + "/" + patternCorrespondingUrl);
-      return response;
+      auto redirectUrl = m_root + "/" + bookName + "/" + patternCorrespondingUrl;
+      return RedirectionResponse::build(*this, redirectUrl);
     }
   }
 
@@ -798,10 +797,8 @@ InternalServer::get_reader(const std::string& bookName) const
 std::unique_ptr<Response>
 InternalServer::build_redirect(const std::string& bookName, const kiwix::Entry& entry) const
 {
-  auto response = Response::build(*this);
-  response->set_redirection(m_root + "/" + bookName + "/" +
-                           kiwix::urlEncode(entry.getPath()));
-  return response;
+  auto redirectUrl = m_root + "/" + bookName + "/" + kiwix::urlEncode(entry.getPath());
+  return RedirectionResponse::build(*this, redirectUrl);
 }
 
 std::unique_ptr<Response> InternalServer::handle_content(const RequestContext& request)

src/server/internalServer.h

@@ -106,6 +106,7 @@ class InternalServer {
     std::string m_server_id;
 
     friend std::unique_ptr<Response> Response::build(const InternalServer& server);
+    friend std::unique_ptr<Response> RedirectionResponse::build(const InternalServer& server, const std::string& redirectionUrl);
 };
 
 }

src/server/response.cpp

@@ -252,13 +252,6 @@ Response::create_raw_content_mhd_response(const RequestContext& request)
   return response;
 }
 
-MHD_Response*
-Response::create_redirection_mhd_response() const
-{
-  MHD_Response* response = MHD_create_response_from_buffer(0, nullptr, MHD_RESPMEM_MUST_COPY);
-  MHD_add_response_header(response, MHD_HTTP_HEADER_LOCATION, m_content.c_str());
-  return response;
-}
 
 MHD_Response*
 Response::create_entry_mhd_response() const
@@ -296,9 +289,6 @@ Response::create_mhd_response(const RequestContext& request)
     case ResponseMode::RAW_CONTENT :
       return create_raw_content_mhd_response(request);
 
-    case ResponseMode::REDIRECTION :
-      return create_redirection_mhd_response();
-
     case ResponseMode::ENTRY :
       return create_entry_mhd_response();
   }
@@ -338,12 +328,6 @@ void Response::set_content(const std::string& content) {
   m_mode = ResponseMode::RAW_CONTENT;
 }
 
-void Response::set_redirection(const std::string& url) {
-  m_content = url;
-  m_mode = ResponseMode::REDIRECTION;
-  m_returnCode = MHD_HTTP_FOUND;
-}
-
 void Response::set_entry(const Entry& entry, const RequestContext& request) {
   m_entry = entry;
   m_mode = ResponseMode::ENTRY;
@@ -374,4 +358,31 @@ void Response::set_taskbar(const std::string& bookName, const std::string& bookT
 }
 
 
+RedirectionResponse::RedirectionResponse(const std::string& root, bool verbose, bool withTaskbar, bool withLibraryButton, bool blockExternalLinks, const std::string& redirectionUrl) :
+  Response(root, verbose, withTaskbar, withLibraryButton, blockExternalLinks),
+  m_redirectionUrl(redirectionUrl)
+{
+  m_returnCode = MHD_HTTP_FOUND;
+}
+
+std::unique_ptr<Response> RedirectionResponse::build(const InternalServer& server, const std::string& redirectionUrl)
+{
+   return std::unique_ptr<Response>(new RedirectionResponse(
+        server.m_root,
+        server.m_verbose.load(),
+        server.m_withTaskbar,
+        server.m_withLibraryButton,
+        server.m_blockExternalLinks,
+        redirectionUrl));
+}
+
+MHD_Response* RedirectionResponse::create_mhd_response(const RequestContext& request)
+{
+  MHD_Response* response = MHD_create_response_from_buffer(0, nullptr, MHD_RESPMEM_MUST_COPY);
+  MHD_add_response_header(response, MHD_HTTP_HEADER_LOCATION, m_redirectionUrl.c_str());
+  return response;
+}
+
+
+
 }

src/server/response.h

@@ -37,7 +37,6 @@ namespace kiwix {
 enum class ResponseMode {
   ERROR_RESPONSE,
   RAW_CONTENT,
-  REDIRECTION,
   ENTRY
 };
 
@@ -47,7 +46,7 @@ class RequestContext;
 class Response {
   public:
     Response(const std::string& root, bool verbose, bool withTaskbar, bool withLibraryButton, bool blockExternalLinks);
-    ~Response() = default;
+    virtual ~Response() = default;
 
     static std::unique_ptr<Response> build(const InternalServer& server);
 
@@ -55,7 +54,6 @@ class Response {
 
     void set_template(const std::string& template_str, kainjow::mustache::data data);
     void set_content(const std::string& content);
-    void set_redirection(const std::string& url);
     void set_entry(const Entry& entry, const RequestContext& request);
 
 
@@ -77,13 +75,12 @@ class Response {
     bool contentDecorationAllowed() const;
 
   private: // functions
-    MHD_Response* create_mhd_response(const RequestContext& request);
+    virtual MHD_Response* create_mhd_response(const RequestContext& request);
     MHD_Response* create_error_response(const RequestContext& request) const;
     MHD_Response* create_raw_content_mhd_response(const RequestContext& request);
-    MHD_Response* create_redirection_mhd_response() const;
     MHD_Response* create_entry_mhd_response() const;
 
-  private: // data
+  protected: // data
     bool m_verbose;
     ResponseMode m_mode;
     std::string m_root;
@@ -101,6 +98,20 @@ class Response {
     ETag m_etag;
 };
 
+
+class RedirectionResponse : public Response {
+  public:
+    RedirectionResponse(const std::string& root, bool verbose, bool withTaskbar, bool withLibraryButton, bool blockExternalLinks, const std::string& redirectionUrl);
+
+    static std::unique_ptr<Response> build(const InternalServer& server, const std::string& redirectionUrl);
+
+
+  private:
+    MHD_Response* create_mhd_response(const RequestContext& request);
+
+    std::string m_redirectionUrl;
+};
+
 }
 
 #endif //KIWIXLIB_SERVER_RESPONSE_H