/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "prio.h"
#include "prprf.h"
#include "prlink.h"
#include "prvrsion.h"

#include "plerror.h"
#include "plgetopt.h"

PR_IMPORT(const PRVersionDescription*) libVersionPoint(void);

int main(int argc, char** argv) {
  PRIntn rv = 1;
  PLOptStatus os;
  PRIntn verbosity = 0;
  PRLibrary* runtime = NULL;
  const char* library_name = NULL;
  const PRVersionDescription* version_info;
  char buffer[100];
  PRExplodedTime exploded;
  PLOptState* opt = PL_CreateOptState(argc, argv, "d");

  PRFileDesc* err = PR_GetSpecialFD(PR_StandardError);

  while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
    if (PL_OPT_BAD == os) {
      continue;
    }
    switch (opt->option) {
      case 0: /* fully qualified library name */
        library_name = opt->value;
        break;
      case 'd': /* verbodity */
        verbosity += 1;
        break;
      default:
        PR_fprintf(err, "Usage: version [-d] {fully qualified library name}\n");
        return 2; /* but not a lot else */
    }
  }
  PL_DestroyOptState(opt);

  if (NULL != library_name) {
    runtime = PR_LoadLibrary(library_name);
    if (NULL == runtime) {
      PL_FPrintError(err, "PR_LoadLibrary");
      return 3;
    } else {
      versionEntryPointType versionPoint =
          (versionEntryPointType)PR_FindSymbol(runtime, "libVersionPoint");
      if (NULL == versionPoint) {
        PL_FPrintError(err, "PR_FindSymbol");
        return 4;
      }
      version_info = versionPoint();
    }
  } else {
    version_info = libVersionPoint(); /* NSPR's version info */
  }

  (void)PR_fprintf(err, "Runtime library version information\n");
  PR_ExplodeTime(version_info->buildTime, PR_GMTParameters, &exploded);
  (void)PR_FormatTime(buffer, sizeof(buffer), "%d %b %Y %H:%M:%S", &exploded);
  (void)PR_fprintf(err, "  Build time: %s GMT\n", buffer);
  (void)PR_fprintf(err, "  Build time: %s\n", version_info->buildTimeString);
  (void)PR_fprintf(err, "  %s V%u.%u.%u (%s%s%s)\n", version_info->description,
                   version_info->vMajor, version_info->vMinor,
                   version_info->vPatch, (version_info->beta ? " beta " : ""),
                   (version_info->debug ? " debug " : ""),
                   (version_info->special ? " special" : ""));
  (void)PR_fprintf(err, "  filename: %s\n", version_info->filename);
  (void)PR_fprintf(err, "  security: %s\n", version_info->security);
  (void)PR_fprintf(err, "  copyright: %s\n", version_info->copyright);
  (void)PR_fprintf(err, "  comment: %s\n", version_info->comment);
  rv = 0;
  return rv;
}

/* version.c */