/*
** server.c -- serwer używający gniazd strumieniowych
*/

#include <cstdio>
#include <cstdlib>

#include <sys/socket.h>

#include <sys/types.h>
#include <netinet/in.h>
#include <pthread.h>
#include <arpa/inet.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <termios.h>
#include <iostream>
#define MYPORT 10053   // port, z którym będą się łączyli użytkownicy

#define SOCKADDR sockaddr
#define SOCKET_ERROR -1
#define SOCKET int
#define closesocket close

pthread_mutex_t lock;

void gotoxy(int x,int y)
{
    printf("%c[%d;%df",0x1B,y,x);
}


int mainSocket;

void *receiver( void *ptr )
{
    int bytesRecv = -1;
    char recvbuf;

    int posx = 0;
    int posy = 0;

    while (1)
    {
        bytesRecv = recv(mainSocket, &recvbuf, 1, 0);

        if (recvbuf == '\n' || recvbuf == '\r')
        {
            posy++;
            posx = 0;
            continue;
        }
        // bckspace
        else  if (recvbuf == 8 && posx>0)
        {
            posx--;
            continue;
        }
        if (posy + 13 == 25)
            posy = 0;

         pthread_mutex_lock(&lock);

        gotoxy(posx, posy + 13);
        if (recvbuf != '\n')
        {
            printf("%c", recvbuf);
            fflush(stdout);
        }

        pthread_mutex_unlock(&lock);

        posx++;
        if (posx == 79)
        {
            posx = 0;
            posy++;
        }
pthread_mutex_lock(&lock);
        gotoxy(79,24);
pthread_mutex_unlock(&lock);
    }

}

void print_separator()
{
    gotoxy(0, 12);

    printf("--------------------------------------------------------------------------------");
}



int main(void)
{
    //ghMutex = CreateMutex(
    //  NULL,              // default security attributes
    //  FALSE,             // initially not owned
    //  NULL);             // unnamed mutex

    system("/bin/stty raw");

    mainSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (mainSocket == -1)
    {
        printf("Error creating socket");
        return 1;
    }

    sockaddr_in service;
    memset(&service, 0, sizeof(service));
    service.sin_family = AF_INET;
    service.sin_addr.s_addr = INADDR_ANY;
    service.sin_port = htons(MYPORT);

    printf("Server: 1, Klient: 2\n");
    int mode;
    scanf("%d", &mode);

    if (mode == 1)
    {

        if (bind(mainSocket, (SOCKADDR *)& service, sizeof(service)) == -1)
        {
            printf("bind() failed.\n");
            closesocket(mainSocket);
            return 1;
        }

        if (listen(mainSocket, 1) == -1)
            printf("Error listening on socket.\n");

        SOCKET acceptSocket = SOCKET_ERROR;
        printf("Waiting for a client to connect...\n");

        while (acceptSocket == SOCKET_ERROR)
        {
            acceptSocket = accept(mainSocket, NULL, NULL);
        }


        system("clear");
        print_separator();

        mainSocket = acceptSocket;

        pthread_t thread1;
        pthread_create( &thread1, NULL, receiver, NULL);

    }
    if (mode == 2)
    {
        if (connect(mainSocket, (SOCKADDR *)& service, sizeof(service)) == -1)
        {
            printf("Failed to connect.\n");
            return 1;
        }

        system("clear");
        print_separator();

        pthread_t thread1;
        pthread_create( &thread1, NULL, receiver, NULL);
    }

    int posx = 0, posy = 0;

    while (1)
    {
pthread_mutex_lock(&lock);
        gotoxy(79,24);
pthread_mutex_unlock(&lock);
        char key;
        std::cin.get(key);
        send(mainSocket, &key, 1, 0);
        if (key == '\r')
        {
            posy++;
            posx = 0;
            continue;
        }
        // bckspace
        else  if (key == 8 && posx>0)
        {
            posx--;
            key = ' ';
            send(mainSocket, &key, 1, 0);
            pthread_mutex_lock(&lock);
            gotoxy(posx, posy);
            printf("%c", key);

            pthread_mutex_unlock(&lock);

            key = 8;
            send(mainSocket, &key, 1, 0);
            continue;
        }

        if (posy == 12)
            posy = 0;

         pthread_mutex_lock(&lock);

        gotoxy(posx, posy);
        if (key != '\n')
        {
            printf("%c", key);
        }
        fflush(stdout);
        pthread_mutex_unlock(&lock);



        posx++;
        if (posx == 79)
        {
            posx = 0;
            posy++;
        }

    }

    return 0;
}