#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <unistd.h>

#include "fetch_git.h"
#include "vars.h"

int fetch_git(Pkg pkg) {
  pid_t pid = fork();
  if (pid == 0) {
    if (!is_verbose) {
      int nullfd = open("/dev/null", O_WRONLY);
      if (nullfd >= 0) {
        dup2(nullfd, STDOUT_FILENO);
        dup2(nullfd, STDERR_FILENO);
        close(nullfd);
      }
    }
    const char *argv[8];
    int i = 0;
    argv[i++] = "git";
    argv[i++] = "-c";
    argv[i++] = "advice.detachedHead=false";
    argv[i++] = "clone";
    if (strcmp(pkg.ver, "HEAD") != 0) {
      argv[i++] = "--branch";
      argv[i++] = pkg.ver;
    }
    argv[i++] = "--recursive";
    argv[i++] = pkg.url;
    argv[i++] = pkg.src;
    argv[i] = NULL;
    execvp("git", (char *const *)argv);
    _exit(127);
  }

  int status;
  waitpid(pid, &status, 0);
  int result = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
  if (result != 0) {
    printf("%s git clone failed\n", print_warning);
  }

  return result;
}