// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

#include <zencore/stats.h>
#include <zenhttp/httpserver.h>
#include <zenhttp/httpstats.h>
#include <zenhttp/httpstatus.h>

#include <filesystem>

namespace zen {

class BuildStore;

class HttpBuildStoreService final : public zen::HttpService, public IHttpStatusProvider, public IHttpStatsProvider
{
public:
	HttpBuildStoreService(HttpStatusService& StatusService, HttpStatsService& StatsService, BuildStore& Store);
	virtual ~HttpBuildStoreService();

	virtual const char* BaseUri() const override;
	virtual void		HandleRequest(zen::HttpServerRequest& Request) override;

	virtual void HandleStatsRequest(HttpServerRequest& Request) override;
	virtual void HandleStatusRequest(HttpServerRequest& Request) override;

private:
	struct BuildStoreStats
	{
		std::atomic_uint64_t BlobReadCount{};
		std::atomic_uint64_t BlobHitCount{};
		std::atomic_uint64_t BlobWriteCount{};
		std::atomic_uint64_t BlobMetaReadCount{};
		std::atomic_uint64_t BlobMetaHitCount{};
		std::atomic_uint64_t BlobMetaWriteCount{};
		std::atomic_uint64_t BlobExistsCount{};
		std::atomic_uint64_t BlobExistsBodyHitCount{};
		std::atomic_uint64_t BlobExistsMetaHitCount{};
		std::atomic_uint64_t RequestCount{};
		std::atomic_uint64_t BadRequestCount{};
	};

	void Initialize();

	inline LoggerRef Log() { return m_Log; }

	LoggerRef m_Log;

	void PutBlobRequest(HttpRouterRequest& Req);
	void GetBlobRequest(HttpRouterRequest& Req);

	void PutMetadataRequest(HttpRouterRequest& Req);
	void GetMetadatasRequest(HttpRouterRequest& Req);

	void BlobsExistsRequest(HttpRouterRequest& Req);

	HttpRequestRouter m_Router;

	HttpStatusService& m_StatusService;
	HttpStatsService&  m_StatsService;

	BuildStore&				 m_BuildStore;
	BuildStoreStats			 m_BuildStoreStats;
	metrics::OperationTiming m_HttpRequests;
};

}  // namespace zen