#pragma once
#include "Global.h"
#include "Export.h"
#include "IPTable.h"
#include "HTTPObjects.h"

class UNSWSC_DLL_EXPORT ServerProcessor
{
protected:
	class Impl;
	std::unique_ptr<Impl> pimpl;

public:
	ServerProcessor();
	virtual ~ServerProcessor();

public:
	void EnableIPCheck();
	void DisableIPCheck();
	void UpdateBlockedIPList(IPTablePtr ips);
	void AppenedBlockedIP(DateTime::Span block_time, std::string ip);
	uns::HTTPMethod GetMethod(uns::RequestPtr request);
	void AddStreamSettings(std::string method, bool stream);

public:
	// 主接口，重载以实现对请求的处理
	virtual uns::ResponsePtr Processor(uns::RequestPtr request) = 0;
	// 路径穿越配置，重载以配置允许的路径穿越类型
	virtual uns::PathTraversalDefenceLevel PTDefence();
	// 路径穿越防护，重载以实现路径穿越检查，配置为AutoNormalize或AllowNormal时必须，否则自动退化为DenyAll
	virtual bool IsPathSafe(const std::string& raw_path);
	// 请求头预检，重载以实现在接收请求体之前检查请求头，返回false则服务器将强制关闭连接
	virtual bool IsHeaderValid(uns::RequestPtr request);

public:
	uns::ResponsePtr Handle(uns::RequestPtr request);
	bool Stream(const std::string& method);
};

using ServerProcessorPtr = std::shared_ptr<ServerProcessor>;