✨ Accept Filter

CMakeLists.txt

@@ -17,6 +17,7 @@ add_executable(${PROJECT_NAME} main.cpp )
 add_subdirectory(third_party/xxHash/cmake_unofficial third_party/xxHash/build EXCLUDE_FROM_ALL)
 
 target_sources(${PROJECT_NAME} PRIVATE
+    src/json_filter.cpp
     src/admin_filter.cpp
     src/bank_api.cpp
     src/bank.cpp

include/json_filter.h

@@ -0,0 +1,14 @@
+#pragma once
+#include <drogon/HttpFilter.h>
+
+using namespace drogon;
+
+class JsonFilter : public HttpFilter<JsonFilter, false>
+{
+public:
+    JsonFilter();
+
+    virtual void doFilter(const HttpRequestPtr &,
+                          FilterCallback &&,
+                          FilterChainCallback &&) override;
+};

src/json_filter.cpp

@@ -0,0 +1,17 @@
+#include "json_filter.h"
+
+JsonFilter::JsonFilter() {}
+
+void JsonFilter::doFilter(const HttpRequestPtr &req,
+                          FilterCallback &&fcb,
+                          FilterChainCallback &&fccb)
+{
+    if (req->getHeader("Content-Type") == "application/json" && req->getHeader("Accept") == "application/json")
+    {
+        fccb();
+        return;
+    }
+    const auto &resp = HttpResponse::newHttpJsonResponse("Client must Accept JSON");
+    resp->setStatusCode(k406NotAcceptable);
+    fcb(resp);
+}