#ifndef EASYHTTPCPP_HTTPCACHESTRATEGY_H_INCLUDED

#define EASYHTTPCPP_HTTPCACHESTRATEGY_H_INCLUDED

#include <string>

#include "Poco/AutoPtr.h"

#include "Poco/RefCountedObject.h"

#include "Poco/Timestamp.h"

#include "easyhttpcpp/Headers.h"

#include "easyhttpcpp/HttpExports.h"

#include "easyhttpcpp/Request.h"

#include "easyhttpcpp/Response.h"

namespace easyhttpcpp {

class EASYHTTPCPP_HTTP_INTERNAL_API HttpCacheStrategy : public Poco::RefCountedObject {

typedef Poco::AutoPtr<HttpCacheStrategy> Ptr;

HttpCacheStrategy(Request::Ptr pRequest, Response::Ptr pCacheResponse, unsigned long long nowAtEpoch);

virtual ~HttpCacheStrategy();

Request::Ptr getNetworkRequest();

Response::Ptr getCachedResponse();

static bool isAvailableToCache(Request::Ptr pRequest);

static bool isValidCacheResponse(Response::Ptr pCacheResponse, Response::Ptr pNetworkResponse);

static bool isCacheable(Response::Ptr pResponse);

static Headers::Ptr combineCacheAndNetworkHeader(Response::Ptr pCacheResponse, Response::Ptr pNetworkResponse);

static bool isInvalidCacheMethod(Response::Ptr pResponse);

void resolveCacheResponseAndNetworkRequest();

unsigned long long calculateCacheResponseAge();

unsigned long long calculateFreshnessLifetime();

static bool isEndToEnd(const std::string& name);

unsigned long long m_nowAtEpoch;

Request::Ptr m_pRequest;

Request::Ptr m_pNetworkRequest;

Response::Ptr m_pCacheResponse;

Poco::Timestamp m_responseDate;

bool m_responseDateExisted;

Poco::Timestamp m_lastModified;

bool m_lastModifiedExisted;

Poco::Timestamp m_expires;

bool m_expiresExisted;

long long m_ageSec;

bool m_ageExisted;

};

} /* namespace easyhttpcpp */

#endif /* EASYHTTPCPP_HTTPCACHESTRATEGY_H_INCLUDED */