#include "conexion.h"
#include <arpa/inet.h>
#include <sys/socket.h>
#include <memory.h>
#include <unistd.h>

#define CHK_ERR(err,s) if ((err)==-1) { perror(s); exit(1); }

conexion::conexion(config_reader &conf)
{
  config=&conf;
  int err;
  struct sockaddr_in server_address;
  this->fd = socket (AF_INET, SOCK_STREAM, 0);
  CHK_ERR(this->fd, "error initial conexion")

  std::string port;
  if(!this->config->get_param("port",port)){
      perror("error to acces the port in the config");
    }

  std::string host;
  if(!this->config->get_param("host",host)){
      perror("error to accest to the host in the config");
    }

  memset(&server_address, 0, sizeof(server_address));
  server_address.sin_family      = AF_INET;
  server_address.sin_addr.s_addr = inet_addr (host.data());   /* Server IP */
  server_address.sin_port        = htons     (atoi(port.data()));          /* Server Port number */

  err = connect(this->fd, (struct sockaddr*) &server_address,
        sizeof(server_address));
  CHK_ERR(err, "error in connexion")
}

ssize_t conexion::read_string(std::string &entrada, int size){
  char* buffer = new char[size+1];
  ssize_t ret=read(this->fd,buffer,size);
  buffer[ret]='\0';
  entrada = buffer;
  return ret;
}

ssize_t conexion::write_string(std::string entrada){
  return write(this->fd,entrada.data(),entrada.size());
}

bool conexion::check_pass(std::string usernem, std::string pass){
  this->write_string(usernem);
  this->write_string(pass);
  std::string result;
  this->read_string(result,4);
  return result=="pass";
}