#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#include <malloc.h>
#include <errno.h>
#include <stdlib.h>

#define PORT 8080
#define N_CON 5
#define BUF_LEN 6

void custom_bind() {
    int sockfd, newsockfd, portno, clilen;
    struct sockaddr_in serv_addr, cli_addr;
    char buffer[BUF_LEN] = "";
    int counter = 0;

    sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (sockfd < 0) {
        perror("ERROR opening socket");
        exit(1);
    }

    bzero((char *) &serv_addr, sizeof(serv_addr));
    portno = PORT;

    serv_addr.sin_family = AF_INET;
    serv_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
    serv_addr.sin_port = htons((uint16_t) portno);

    if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
        perror("ERROR on binding");
        exit(1);
    }

    while(1) {
        listen(sockfd, N_CON);
        clilen = sizeof(cli_addr);
        newsockfd = accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *) &clilen);

        if (newsockfd < 0) {
            perror("ERROR on accept");
            exit(1);
        }

         printf("New client connected\n");
         fflush(stdout);
         counter++;

         int n = (int) read(newsockfd, &buffer, BUF_LEN * sizeof(char));
         if (n < 0) {
              perror("ERROR reading from socket choice");
              exit(1);
          }
          printf("Command from client: %s\n", buffer);
          if (!strcmp(buffer, "count")) {
              printf("Clients processed: %d\n", counter);
          } else if (!strcmp(buffer, "date")) {
              system("date");
          }

    }
    shutdown(newsockfd, 2);
}

int main() {
    while (1) {
        custom_bind();
    }
    return 0;
}