#include <iostream>
#include <cstdlib>
#include <unistd.h>
#include <string.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <pthread.h>
#include "Terminal.hpp"

// 多线程版
// ./udpclient serverip serverport
struct ThreadData
{
    struct sockaddr_in server;
    int sockfd;
    std::string serverip;
};

void Usage(std::string proc)
{
    std::cout << "\n\rUsage: " << proc << " serverip serverport\n"
              << std::endl;
}
void *recvr_message(void *args)
{
    // OpenTerminal();
    ThreadData *td = static_cast<ThreadData *>(args);
    char buffer[1024];
    while(true)
    {
        memset(buffer,0,sizeof buffer);
        struct sockaddr_in temp;
        socklen_t len =sizeof(temp);
        ssize_t s = recvfrom(td->sockfd,buffer,1023,0,(struct sockaddr*)&temp,&len);
        if(s > 0)
        {
            buffer[s] = 0;
            std::cerr << buffer << std::endl;
        }
    }
}
void *sender_message(void *args)
{
    ThreadData *td = static_cast<ThreadData *>(args);
    std::string message;
    socklen_t len = sizeof(td->server);
    std::string welcome = td->serverip;
    welcome += " coming...";
    sendto(td->sockfd,message.c_str(),message.size(),0,(struct sockaddr*)&td->server,len);
    while(true)
    {
        std::cout << "please Enter@ ";
        getline(std::cin, message);
        sendto(td->sockfd,message.c_str(),message.size(),0,(struct sockaddr*)&td->server,len);
    }
}

int main(int argc, char *argv[])
{
    if (argc != 3)
    {
        Usage(argv[0]);
        exit(0);
    }
    std::string serverip = argv[1];
    uint16_t serverport = std::stoi(argv[2]);

    struct ThreadData td;
    bzero(&td.server, sizeof(td.server));
    td.server.sin_family = AF_INET;
    td.server.sin_port = htons(serverport);
    td.server.sin_addr.s_addr = inet_addr(serverip.c_str());
    td.sockfd = socket(AF_INET, SOCK_DGRAM, 0);
    if (td.sockfd < 0)
    {
        std::cout << "socker error" << std::endl;
        return 1;
    }
    td.serverip = serverip;

    pthread_t recvr, sender;
    pthread_create(&recvr, nullptr, recvr_message, &td);
    pthread_create(&sender, nullptr, sender_message, &td);

    pthread_join(recvr, nullptr);
    pthread_join(sender, nullptr);
    close(td.sockfd);
    return 0;
}

// 基础版
//  void Usage(std::string proc)
//  {
//      std::cout << "\n\rUsage: " << proc << " serverip serverport\n"
//                << std::endl;
//  }
//  int main(int argc, char *argv[])
//  {
//      if (argc != 3)
//      {
//          Usage(argv[0]);
//          exit(0);
//      }
//      std::string serverip = argv[1];
//      uint16_t serverport = std::stoi(argv[2]);

//     struct sockaddr_in server;
//     bzero(&server, sizeof(server));
//     server.sin_family = AF_INET;
//     server.sin_port = htons(serverport);
//     server.sin_addr.s_addr = inet_addr(serverip.c_str());
//     socklen_t len = sizeof(server);

//     int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
//     if (sockfd < 0)
//     {
//         cout << "socker error" << endl;
//         return 1;
//     }

//     string message;
//     char buffer[1024];
//     while (true)
//     {
//         cout << "Please Enter@ ";
//         getline(cin, message);

//         std::cout << message << std::endl;
//         1. 数据 2. 给谁发
//         sendto(sockfd, message.c_str(), message.size(), 0, (struct sockaddr *)&server, len);

//         struct sockaddr_in temp;
//         socklen_t len = sizeof(temp);

//         ssize_t s = recvfrom(sockfd, buffer, 1023, 0, (struct sockaddr *)&temp, &len);
//         if (s > 0)
//         {
//             buffer[s] = 0;
//             cout << buffer << endl;
//         }
//     }

//     close(sockfd);
//     return 0;
// }