#ifndef HGL_NETWORK_IP_INCLUDE
#define HGL_NETWORK_IP_INCLUDE

#include<hgl/platform/Platform.h>

#if HGL_OS == HGL_OS_Windows
    #include<ws2tcpip.h>

    #if SOMAXCONN == 5
    #error Please use <winsock2.h>
    #endif//

    typedef int socklen_t;
    typedef ULONG in_addr_t;

    #define GetLastSocketError() WSAGetLastError()

    #ifndef SOCK_DCCP
    #define SOCK_DCCP 6
    #endif//SOCK_DCCP

    #ifndef SOCK_PACKET
    #define SOCK_PACKET 10
    #endif//SOCK_PACKET

    #ifndef IPPROTO_DCCP
    #define IPPROTO_DCCP 33
    #endif//IPPROTO_DCCP

    #ifndef IPPROTO_UDPLITE
    #define IPPROTO_UDPLITE     136
    #endif//IPPROTO_UDPLITE
#else
    #include<errno.h>
    #include<sys/types.h>
    #include<sys/ioctl.h>
    #include<sys/socket.h>
    #include<unistd.h>
    #include<netdb.h>
    #include<arpa/inet.h>
    #include<netinet/in.h>

    #define GetLastSocketError() (errno)

    #if HGL_OS == HGL_OS_Linux
        #include<sys/sendfile.h>

        inline int sendfile(int tfd,int sfd,size_t size)
        {
            return sendfile(tfd,sfd,nullptr,size);
        }
    #endif//HGL_OS == HGL_OS_Linux

    #if HGL_OS == HGL_OS_FreeBSD
        #include<sys/uio.h>

        inline int sendfile(int tfd,int sfd,size_t size)
        {
            return sendfile(tfd,sfd,0,size,nullptr,nullptr,0);
        }
    #endif//HGL_OS == HGL_OS_FreeBSD

    #if (HGL_OS == HGL_OS_macOS)||(HGL_OS == HGL_OS_iOS)
        #ifndef IPPROTO_UDPLITE
        #define IPPROTO_UDPLITE     136
        #endif//IPPROTO_UDPLITE
    #endif//
#endif//HGL_OS == HGL_OS_Windows

#include<hgl/type/DataType.h>
#include<hgl/type/List.h>
#include<hgl/type/BaseString.h>
#include<hgl/Str.h>

namespace hgl
{
    namespace network
    {
        /**
         * IP类型枚举
         */
        enum IPType
        {
            iptNone=0,

            iptV4,
            iptV6,

            iptEnd
        };//enum IPType

        inline IPType CheckIPType(const char *name)
        {
            if(!name)return(iptNone);

            while(*name)
            {
                if(*name==':')return(iptV6);
                if(*name=='.')return(iptV4);

                ++name;
            }

            return(iptNone);
        }

        struct IPSupport
        {
            uint family;            ///<协议家族：AF_INET,AF_INET6,AF_NETBIOS
            uint socktype;          ///<Socket类型：SOCK_STREAM,SOCK_DGRAM,SOCK_RAW,SOCK_RDM,SOCK_SEQPACKET
            uint protocol;          ///<协议类型：IPPROTO_TCP,IPPROTO_UDP,IPPROTO_SCTP

            union
            {
                sockaddr_in ipv4;
                sockaddr_in6 ipv6;
            };

            union
            {
                char ipv4str[INET_ADDRSTRLEN+1];
                char ipv6str[INET6_ADDRSTRLEN+1];
            };
        };

        int GetIPSupport(List<IPSupport> &);        ///<取得本机IP支持列表
        bool CheckIPSupport(const List<IPSupport> &ips_list,uint family,uint socktype,uint protocol);
        bool CheckIPSupport(uint family,uint socktype,uint protocol);

        inline bool CheckIPv4SupportTCP     (){return CheckIPSupport(AF_INET,SOCK_STREAM,   IPPROTO_TCP     );}
        inline bool CheckIPv4SupportUDP     (){return CheckIPSupport(AF_INET,SOCK_DGRAM,    IPPROTO_UDP     );}
        inline bool CheckIPv4SupportUDPLite (){return CheckIPSupport(AF_INET,SOCK_DGRAM,    IPPROTO_UDPLITE );}
        inline bool CheckIPv4SupportSCTP    (){return CheckIPSupport(AF_INET,SOCK_SEQPACKET,IPPROTO_SCTP    );}

        inline bool CheckIPv6SupportTCP     (){return CheckIPSupport(AF_INET6,SOCK_STREAM,   IPPROTO_TCP     );}
        inline bool CheckIPv6SupportUDP     (){return CheckIPSupport(AF_INET6,SOCK_DGRAM,    IPPROTO_UDP     );}
        inline bool CheckIPv6SupportUDPLite (){return CheckIPSupport(AF_INET6,SOCK_DGRAM,    IPPROTO_UDPLITE );}
        inline bool CheckIPv6SupportSCTP    (){return CheckIPSupport(AF_INET6,SOCK_SEQPACKET,IPPROTO_SCTP    );}

        /**
         * IP地址类
         */
        class IPAddress
        {
        protected:

            int socktype;
            int protocol;

            const char *protocol_name;

            void RefreshProtocolName();

        public:

            IPAddress()
            {
                socktype=0;
                protocol=0;
                protocol_name=nullptr;
            }

            IPAddress(int s,int p)
            {
                socktype=s;
                protocol=p;

                RefreshProtocolName();
            }

            virtual ~IPAddress()=default;

            virtual const int GetFamily()const=0;                                                           ///<返回网络家族
                    const int GetSocketType()const{return socktype;}                                        ///<返回Socket类型
                    const int GetProtocol()const{return protocol;}                                          ///<返回协议类型
            virtual const uint GetIPSize()const=0;                                                          ///<取得IP地址的长度
            virtual const uint GetSockAddrInSize()const=0;                                                  ///<取得SockAddrIn变量长度
            virtual const uint GetIPStringMaxSize()const=0;                                                 ///<取得IP字符串最大长度

            virtual const bool IsBoradcast()const=0;                                                        ///<是否为广播

            virtual const char *GetProtocolName()const{return protocol_name;}                               ///<取得协议名称

            /**
             * 设置IP地址
             * @param _name 域名或地址字符串
             * @param _port 端口号
             * @param socktype Socket类型(可以为SOCK_STREAM、SOCK_DGRAM、SOCK_RAW、SOCK_RDM、SOCK_SEQPACKET等值),默认为所有类型。
             * @param protocol 协议类型(可以为IPPROTO_TCP、IPPROTO_UDP、IPPROTO_SCTP),默认为所有类型。
             */
            virtual bool Set(const char *_name,ushort _port,int socktype,int protocol)=0;

                    bool SetTCP     (const char *_name,ushort _port){return Set(_name,_port,SOCK_STREAM,    IPPROTO_TCP     );}
                    bool SetUDP     (const char *_name,ushort _port){return Set(_name,_port,SOCK_DGRAM,     IPPROTO_UDP     );}
                    bool SetUDPLite (const char *_name,ushort _port){return Set(_name,_port,SOCK_DGRAM,     IPPROTO_UDPLITE );}
                    bool SetSCTP    (const char *_name,ushort _port){return Set(_name,_port,SOCK_SEQPACKET, IPPROTO_SCTP    );}

            const   bool IsTCP      ()const{if(socktype!=SOCK_STREAM    )return(false);if(protocol!=IPPROTO_TCP     )return(false);return(true);}
            const   bool IsUDP      ()const{if(socktype!=SOCK_DGRAM     )return(false);if(protocol!=IPPROTO_UDP     )return(false);return(true);}
            const   bool IsUDPLite  ()const{if(socktype!=SOCK_DGRAM     )return(false);if(protocol!=IPPROTO_UDPLITE )return(false);return(true);}
            const   bool IsSCTP     ()const{if(socktype!=SOCK_SEQPACKET )return(false);if(protocol!=IPPROTO_SCTP    )return(false);return(true);}

            /**
             * 设置一个仅有端口号的地址，一般用于服务器监听本机所有地址
             */
            virtual void Set(ushort port)=0;

            /**
             * 绑定当前IP地址到一个socket上
             * @param ThisSocket Socket号
             * @param reuse 是否可以复用这个IP，默认为true
             */
            virtual bool Bind(int ThisSocket,int reuse=1)const=0;

            /**
             * 获取当前地址的主机名称
             */
            virtual bool GetHostname(UTF8String &)const=0;

            virtual sockaddr *GetSockAddr()=0;

            virtual void *GetIP()=0;

            /**
             * 获取当前地址的IP信息
             */
            virtual void GetIP(void *)=0;

            /**
             * 取得当前地址的端口号
             */
            virtual const ushort GetPort()const=0;

            /**
             * 转换当前地址到一个可视字符串,字符串所需长度请使用GetIPStringMaxSize()获取
             */
            virtual void ToString(char *,int)const=0;

            /**
             * 创建一个可视字符串地址，需自行delete[]
             */
            virtual char *CreateString()const
            {
                const int max_size=GetIPStringMaxSize();
                char *ipstr=new char[max_size+1];

                ToString(ipstr,max_size);

                return ipstr;
            }

            /**
             * 创建一个当前地址的副本
             */
            virtual IPAddress *CreateCopy()const=0;

            /**
             * 创建一个空的IP地址副本
             */
            virtual IPAddress *Create()const=0;

            /**
             * 与较与另一个IP地址是否一样
             */
            virtual bool Comp(const IPAddress *)const=0;
        };//class IPAddress

        /**
         * IPv4地址
         */
        class IPv4Address:public IPAddress
        {
            sockaddr_in addr;

        public:

            IPv4Address(){hgl_zero(addr);}
            IPv4Address(const uint32 _addr,ushort port,int _socktype,int _protocol):IPAddress(_socktype,_protocol)
            {
                Set(_addr,port);
            }

            IPv4Address(const char *name,ushort port,int _socktype,int _protocol)
            {
                Set(name,port,_socktype,_protocol);
            }

            IPv4Address(ushort port,int _socktype,int _protocol)
            {
                Set(nullptr,port,_socktype,_protocol);
            }

            IPv4Address(const IPv4Address *src)
            {
                hgl_cpy(addr,src->addr);
                socktype=src->socktype;
                protocol=src->protocol;
            }

            const int GetFamily()const override{return AF_INET;}
            const uint GetIPSize()const override{return sizeof(in_addr);}
            const uint GetSockAddrInSize()const override{return sizeof(sockaddr_in);}
            const uint GetIPStringMaxSize()const override{return INET_ADDRSTRLEN+6;}

            const bool IsBoradcast()const override{return(addr.sin_addr.s_addr==htonl(INADDR_BROADCAST));}

            bool Set(const char *name,ushort port,int _socktype,int _protocol) override;
            void Set(const uint32 _addr,ushort port)
            {
                hgl_zero(addr);
                addr.sin_family     =AF_INET;
                addr.sin_addr.s_addr=_addr;
                addr.sin_port       =htons(port);
            }
            void Set(ushort port) override;
            bool Bind(int ThisSocket,int reuse=1)const override;
            bool GetHostname(UTF8String &)const override;

            sockaddr *GetSockAddr()override{return (sockaddr *)&addr;}

            void *GetIP() override {return &(addr.sin_addr);}
            void GetIP(void *data) override { memcpy(data,&(addr.sin_addr),sizeof(in_addr)); }

            const uint32 GetInt32IP()const{return addr.sin_addr.s_addr;}
            const ushort GetPort()const override;

            static void ToString(char *str,const int,const in_addr *);
            static void ToString(char *str,const int,const sockaddr_in *);
            void ToString(char *str,const int)const override;

            static int GetDomainIPList(List<in_addr> &addr_list,const char *domain,int _socktype,int _protocol);        ///<取得当指定域名的IPv4地址列表
            static int GetLocalIPList(List<in_addr> &addr_list,int _socktype,int _protocol);                            ///<取得本机的IPv4地址列表

            IPAddress *CreateCopy()const override{return(new IPv4Address(this));}
            IPAddress *Create()const override{return(new IPv4Address());}

            bool Comp(const IPAddress *ipa)const override;
        };//class IPv4Address

        /**
         * IPv6地址
         */
        class IPv6Address:public IPAddress
        {
            sockaddr_in6 addr;

        public:

            IPv6Address(){hgl_zero(addr);}
            IPv6Address(const in6_addr *ip,ushort port,int _socktype,int _protocol):IPAddress(_socktype,_protocol)
            {
                hgl_zero(addr);

                addr.sin6_family=AF_INET6;
                memcpy(&(addr.sin6_addr),ip,sizeof(in6_addr));
                addr.sin6_port=htons(port);
            }

            IPv6Address(const char *name,ushort port,int _socktype,int _protocol)
            {
                Set(name,port,_socktype,_protocol);
            }

            IPv6Address(ushort port,int _socktype,int _protocol)
            {
                Set(nullptr,port,_socktype,_protocol);
            }

            IPv6Address(const IPv6Address *src)
            {
                hgl_cpy(addr,src->addr);
                socktype=src->socktype;
                protocol=src->protocol;
            }

            const int GetFamily()const override{return AF_INET6;}
            const uint GetIPSize()const override{return sizeof(in6_addr);}
            const uint GetSockAddrInSize()const override{return sizeof(sockaddr_in6);}
            const uint GetIPStringMaxSize()const override{return INET6_ADDRSTRLEN+6;}

            const bool IsBoradcast()const override{return(false);}

            bool Set(const char *name,ushort port,int _socktype,int _protocol) override;
            void Set(ushort port) override;
            bool Bind(int ThisSocket,int reuse=1)const override;
            bool GetHostname(UTF8String &)const override;

            sockaddr *GetSockAddr() override{return (sockaddr *)&addr;}

            void *GetIP() override {return &(addr.sin6_addr);}
            void GetIP(void *data) override{memcpy(data,&(addr.sin6_addr),sizeof(in6_addr));}

            const ushort GetPort()const override;

            static void ToString(char *str,const int,const in6_addr *);
            static void ToString(char *str,const int,const sockaddr_in6 *);
            void ToString(char *str,const int)const override;

            static int GetDomainIPList(List<in6_addr> &addr_list,const char *domain,int _socktype,int _protocol);       ///<取得指定域名的IPv6地址列表
            static int GetLocalIPList(List<in6_addr> &addr_list,int _socktype,int _protocol);                           ///<取得本机的IPv6地址列表

            IPAddress *CreateCopy()const override{return(new IPv6Address(this));}
            IPAddress *Create()const override{return(new IPv6Address());}

            bool Comp(const IPAddress *ipa)const override;
        };//class IPv6Address

        inline IPv4Address *CreateIPv4TCP       (const char *name,ushort port){return(new IPv4Address(name,port,SOCK_STREAM,    IPPROTO_TCP));}
        inline IPv6Address *CreateIPv6TCP       (const char *name,ushort port){return(new IPv6Address(name,port,SOCK_STREAM,    IPPROTO_TCP));}
        inline IPv4Address *CreateIPv4UDP       (const char *name,ushort port){return(new IPv4Address(name,port,SOCK_DGRAM,     IPPROTO_UDP));}
        inline IPv6Address *CreateIPv6UDP       (const char *name,ushort port){return(new IPv6Address(name,port,SOCK_DGRAM,     IPPROTO_UDP));}
        inline IPv4Address *CreateIPv4UDPLite   (const char *name,ushort port){return(new IPv4Address(name,port,SOCK_DGRAM,     IPPROTO_UDPLITE));}
        inline IPv6Address *CreateIPv6UDPLite   (const char *name,ushort port){return(new IPv6Address(name,port,SOCK_DGRAM,     IPPROTO_UDPLITE));}
        inline IPv4Address *CreateIPv4SCTP      (const char *name,ushort port){return(new IPv4Address(name,port,SOCK_SEQPACKET, IPPROTO_SCTP));}
        inline IPv6Address *CreateIPv6SCTP      (const char *name,ushort port){return(new IPv6Address(name,port,SOCK_SEQPACKET, IPPROTO_SCTP));}

        inline IPv4Address *CreateIPv4TCP       (const uint32 &ip,ushort port){return(new IPv4Address(ip,port,SOCK_STREAM,    IPPROTO_TCP));}
        inline IPv4Address *CreateIPv4UDP       (const uint32 &ip,ushort port){return(new IPv4Address(ip,port,SOCK_DGRAM,     IPPROTO_UDP));}
        inline IPv4Address *CreateIPv4UDPLite   (const uint32 &ip,ushort port){return(new IPv4Address(ip,port,SOCK_DGRAM,     IPPROTO_UDPLITE));}
        inline IPv4Address *CreateIPv4SCTP      (const uint32 &ip,ushort port){return(new IPv4Address(ip,port,SOCK_SEQPACKET, IPPROTO_SCTP));}

        inline IPv6Address *CreateIPv6TCP       (const in6_addr *ip,ushort port){return(new IPv6Address(ip,port,SOCK_STREAM,    IPPROTO_TCP));}
        inline IPv6Address *CreateIPv6UDP       (const in6_addr *ip,ushort port){return(new IPv6Address(ip,port,SOCK_DGRAM,     IPPROTO_UDP));}
        inline IPv6Address *CreateIPv6UDPLite   (const in6_addr *ip,ushort port){return(new IPv6Address(ip,port,SOCK_DGRAM,     IPPROTO_UDPLITE));}
        inline IPv6Address *CreateIPv6SCTP      (const in6_addr *ip,ushort port){return(new IPv6Address(ip,port,SOCK_SEQPACKET, IPPROTO_SCTP));}

        inline IPv4Address *CreateIPv4TCP       (ushort port){return(new IPv4Address(port,SOCK_STREAM,      IPPROTO_TCP));}
        inline IPv6Address *CreateIPv6TCP       (ushort port){return(new IPv6Address(port,SOCK_STREAM,      IPPROTO_TCP));}
        inline IPv4Address *CreateIPv4UDP       (ushort port){return(new IPv4Address(port,SOCK_DGRAM,       IPPROTO_UDP));}
        inline IPv6Address *CreateIPv6UDP       (ushort port){return(new IPv6Address(port,SOCK_DGRAM,       IPPROTO_UDP));}
        inline IPv4Address *CreateIPv4UDPLite   (ushort port){return(new IPv4Address(port,SOCK_DGRAM,       IPPROTO_UDPLITE));}
        inline IPv6Address *CreateIPv6UDPLite   (ushort port){return(new IPv6Address(port,SOCK_DGRAM,       IPPROTO_UDPLITE));}
        inline IPv4Address *CreateIPv4SCTP      (ushort port){return(new IPv4Address(port,SOCK_SEQPACKET,   IPPROTO_SCTP));}
        inline IPv6Address *CreateIPv6SCTP      (ushort port){return(new IPv6Address(port,SOCK_SEQPACKET,   IPPROTO_SCTP));}

        inline IPv4Address *CreateIPv4UDPBoradcast      (ushort port){return(new IPv4Address(htonl(INADDR_BROADCAST),port,SOCK_DGRAM,   IPPROTO_UDP));}
        inline IPv4Address *CreateIPv4UDPLiteBoradcast  (ushort port){return(new IPv4Address(htonl(INADDR_BROADCAST),port,SOCK_DGRAM,   IPPROTO_UDPLITE));}
    }//namespace network
}//namespace hgl
#endif//HGL_NETWORK_IP_TOOL_INCLUDE