//
// Created bxc on 2022/11/25.
//

#ifndef BXC_SIPSERVER_SIPSERVER_H
#define BXC_SIPSERVER_SIPSERVER_H

extern "C" {
#include <osip2/osip_mt.h>
#include <eXosip2/eXosip.h>
}

#include <map>
#include <string>
#include <thread>
#include <chrono>

#include "./Message/CatalogParser.h"

using namespace std;

class ServerInfo {
public:
    ServerInfo() {}

    ServerInfo(string ua,string nonce, string ip, int port,
                        string sipId, string sipRealm, string sipPass, int sipTimeout, int sipExpiry):
                        mUa(ua),
                        mNonce(nonce),mIp(ip),mPort(port),mSipId(sipId),
                        mSipRealm(sipRealm),mSipPass(sipPass),mSipTimeout(sipTimeout),
                        mSipExpiry(sipExpiry){}

    ~ServerInfo() = default;
public:
    string getUa() const{
        return mUa;
    }
    string  getNonce() const{
        return mNonce;
    }
    string  getIp() const{
        return mIp;
    }
    int getPort() const {
        return mPort;
    }
    string  getSipId() const{
        return mSipId;
    }
    string  getSipRealm() const{
        return mSipRealm;
    }
    string  getSipPass() const{
        return mSipPass;
    }
    int getTimeout() const {
        return mSipTimeout;
    }
    int getExpiry() const {
        return mSipExpiry;
    }

private:
    string mUa;
    string mNonce;//SIP服务随机数值
    string mIp;//SIP服务IP
    int    mPort;//SIP服务端口
    string mSipId; //SIP服务器ID
    string mSipRealm;//SIP服务器域
    string mSipPass;//SIP password
    int mSipTimeout; //SIP timeout
    int mSipExpiry;// SIP到期
};

class Client {
public:
    Client(string ip, int port, string device) :
            mIp(ip),
            mPort(port),
            mRtpPort(0),
            mDevice(device),
            mIsReg(false){
    }
    ~Client() = default;
public:

    void setRtpPort(int rtpPort) {
        mRtpPort = rtpPort;
    }

    void setReg(bool isReg) {
        mIsReg = isReg;
    }
    string  getDevice() const{
        return mDevice;
    }
    string  getIp() const{
        return mIp;
    }
    int getPort() const{
        return mPort;
    }

private:
    // step1
    string mIp; // client ip
    int mPort; // client port
    string mDevice;// 340200000013200000024
    // step2
    bool mIsReg;
    // step3
    int mRtpPort{};

};


class SipServer {
public:
    static SipServer* getInstance(){
		static SipServer* singleton = nullptr;
		if (singleton == nullptr){
			singleton = new SipServer();
		}
		return singleton;
	}
    
public:
    SipServer();
    ~SipServer();

    bool Init(ServerInfo info);

    Client* GetClientByDevice(string  device);
    void DeleteClientByDevice(string device);

    std::vector< DeviceInfo > GetDeviceList();

    std::map<std::string, Client*> GetClientMap();

    int RequestInvite_UDP(const char* dst_channel, int rtpPort);

    int RequestInvite_TCP_a(const char* dst_channel, int rtpPort);

    void cacheCatalog();

public:
    void event_loop();

private:
    int init_sip_server();
    int sip_event_handle(eXosip_event_t *evtp);

    void RequestCatalog(Client* client);

    void response_message_answer(eXosip_event_t *evtp,int code);
    void response_register(eXosip_event_t *evtp);
    void response_register_401unauthorized(eXosip_event_t *evt);
    void response_message(eXosip_event_t *evtp);
    void response_invite_ack(eXosip_event_t *evtp);
    int request_bye(eXosip_event_t* evtp);// 通知相机停止推流
    int parse_xml(const char* data, const char* s_mark, bool with_s_make, const char* e_mark, bool with_e_make, char* dest);
    void dump_request(eXosip_event_t *evtp);
    void dump_response(eXosip_event_t *evtp);

    int clearClientMap();

private:
    bool mQuit{ false };
    eXosip_t *mSipCtx;
    ServerInfo mInfo;

    std::map<std::string, Client *> mClientMap;// <DeviceID,SipClient>

    std::vector< DeviceInfo > m_vec_device;

    thread* m_event_loop_thread;
};


#endif //BXC_SIPSERVER_SIPSERVER_H