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/*
 * exec command
 * Author: Stefano Viola ---> Esteban Sannin
 *
 *
 *
 *
 *
 */


#include <stdio.h>
#include "monitor.h"
#include <time.h>


int main(int argc, char *argv[], char *envp[]){
        //Genera la pagina html
  printf("Content-type: text/html\n\n"
     "<html>\n"
     "<head>\n"
     "<title>Monitoring Router</title>\n"
     "</head>\n"
     "<body>\n");
  stamp_command("Sistem:", "uname -a");
  stamp_command("SERVER WEB:", "env | grep SERVER_SOFTWARE | cut -f 2 -d=");
  stamp_command("Uptime:", "uptime");
  stamp_command("Memory:", "free");
  stamp_command("Disk usage:", "df");
 // stamp_command("ifconfig:", "ifconfig");

  stamp_command("prova:", "./pippo.sh");

  int i;
  for (i = 0; i < 1; i++){
          int first_value = stamp_rate("ifconfig wlan0 | grep 'Byte RX' | cut -f 2 -d: | awk {'print $1'}");
          sleep(2);
          int second_value = stamp_rate("ifconfig wlan0 | grep 'Byte RX' | cut -f 2 -d: | awk {'print $1'}");

          printf("\nfirst: %d second: %d\n", first_value, second_value);
          int difference = second_value-first_value;
          float rate = (difference/2)/1024;
          printf("Band Rate Download RX: %.2f\n\n",rate);

  }

  // stamp_command("ENV:", "env");


    printf("</body>");
    return 0;
}

int stamp_rate(char *string_command){
        int byte = command_number(string_command);
        return byte;

}

void stamp_command(char *string_title, char *string_command){

        printf("<p><b><font color='red'>%s</font></b></p>",string_title);
        printf("<pre>");
        command(string_command);
        printf("</pre><br>");

}

//test for read number
//
int command_number(char *command){
        FILE *fp;
        char line[256];
        int iRet = 0;
        int number_byte;

        fp = popen(command, "r");
        if (fp != NULL) {
                while (fgets(line, sizeof(line), fp)) {
                      number_byte = atoi(line);
                }
                pclose(fp);
                iRet = 0;
        } else {
                iRet = -1;
        }
        return number_byte;
}


///testing funzione per comandi da shell
int command(char *command){
 FILE *fp;
 char line[256];
 int iRet = 0;
 fp = popen(command, "r");

 if (fp != NULL) {
         while (fgets(line, sizeof(line), fp)) {
                 printf("%s", line);
         }
         pclose(fp);
         iRet = 0;
 } else {
         iRet = -1;
 }
 return iRet;

}