/* ISC license. */

#include <skalibs/bsdsnowflake.h>
#include <skalibs/nonposix.h>

#include <string.h>
#include <errno.h>

#include <skalibs/stat.h>
#include <skalibs/direntry.h>
#include <skalibs/strerr.h>
#include <skalibs/djbunix.h>

#include <s6-rc/repo.h>

int s6rc_repo_set_makebundle (char const *repo, char const *set, char const *sub, char const *bundle)
{
  size_t repolen = strlen(repo) ;
  size_t setlen = strlen(set) ;
  size_t sublen = strlen(sub) ;
  size_t bundlelen = strlen(bundle) ;
  size_t bfnlen = repolen + setlen + bundlelen + 28 ;
  DIR *dir ;
  char bfn[bfnlen + 1] ;
  char subfn[repolen + setlen + sublen + 11] ;

  memcpy(bfn, repo, repolen) ;
  memcpy(bfn + repolen, "/sources/", 9) ;
  memcpy(bfn + repolen + 9, set, setlen) ;
  memcpy(bfn + repolen + 9 + setlen, "/bundle/", 8) ;
  memcpy(bfn + repolen + 17 + setlen, bundle, bundlelen + 1) ;
  if (rm_rf(bfn) == -1)
  {
    strerr_warnfu2sys("delete previous directory at ", bfn) ;
    return 0 ;
  }
  if (mkdir(bfn, 02755) == -1)
  {
    strerr_warnfu2sys("mkdir ", bfn) ;
    return 0 ;
  }
  memcpy(bfn + repolen + setlen + 17 + bundlelen, "/type", 6) ;
  if (!openwritenclose_unsafe(bfn, "bundle\n", 7))
  {
    strerr_warnfu2sys("write to ", bfn) ;
    return 0 ;
  }
  memcpy(bfn + repolen + setlen + 18 + bundlelen, "contents.d", 11) ;
  if (mkdir(bfn, 02755) == -1)
  {
    strerr_warnfu2sys("mkdir ", bfn) ;
    return 0 ;
  }
  bfn[bfnlen] = '/' ;

  memcpy(subfn, bfn, repolen + 10 + setlen) ;
  memcpy(subfn + repolen + 10 + setlen, sub, sublen + 1) ;
  dir = opendir(subfn) ;
  if (!dir)
  {
    strerr_warnfu2sys("opendir ", subfn) ;
    return 0 ;
  }

  for (;;)
  {
    size_t len ;
    direntry *d ;
    errno = 0 ;
    d = readdir(dir) ;
    if (!d) break ;
    if (d->d_name[0] == '.') continue ;
    len = strlen(d->d_name) ;
    char fn[bfnlen + len + 2] ;
    memcpy(fn, bfn, bfnlen + 1) ;
    memcpy(fn + bfnlen + 1, d->d_name, len + 1) ;
    if (!openwritenclose_unsafe(fn, "", 0))
    {
      strerr_warnfu2sys("write to ", fn) ;
      dir_close(dir) ;
      return 0 ;
    }
  }
  dir_close(dir) ;
  if (errno)
  {
    strerr_warnfu2sys("readdir ", subfn) ;
    return 0 ;
  }

  return 1 ;
}