/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 
/* vim: set ts=2 et sw=2 tw=80: */
/*
   Copyright (c) 2013 D. Richard Hipp
  
   This program is free software; you can redistribute it and/or
   modify it under the terms of the Simplified BSD License (also
   known as the "2-Clause License" or "FreeBSD License".)
  
   This program is distributed in the hope that it will be useful,
   but without any warranty; without even the implied warranty of
   merchantability or fitness for a particular purpose.
  
   Author contact information:
     drh@hwaci.com
     http://www.hwaci.com/drh/
  
  *****************************************************************************
   This file implements a basic 'ls' for in-repo content
   (not yet filesystem-level).
*/

#include "fossil-scm/fossil-cli.h" /* Fossil App mini-framework */
/* #include "fossil-scm/fossil-internal.h" */

static void fcli_local_help(){
  printf("Usage:\n\t%s [options]\n\n", fcli.appName);

  puts("TODO: help");
}

static struct VDiffApp {
  char * glob;
} VDiffApp = {
  NULL
};

/**
   
 */
static int f_vdiff(fsl_id_t v1, fsl_id_t v2){
  int rc = 0;
#if 0
  fsl_buffer lhs = fsl_buffer_empty;
  fsl_buffer rhs = fsl_buffer_empty;
  fsl_buffer diff = fsl_buffer_empty;
#endif
  f_out("TODO figure out diffs of RIDs "
        "%"FSL_ID_T_PFMT" and %"FSL_ID_T_PFMT".\n",
        (fsl_id_t)v1, (fsl_id_t)v2);
  return rc;
}

int main(int argc, char * const * argv ){
  int rc = 0;
  char * vFrom = NULL;
  char * vTo = NULL;
  fsl_cx * f;
  fsl_id_t idFrom = 0, idTo = 0;

  fcli.appHelp = fcli_local_help;
  rc = fcli_setup(argc, argv);
  if(FSL_RC_BREAK==rc) /* --help */ return 0;
  else if(rc) goto end;


  /* Set up/validate args... */
  f = fcli.f;
  if(!fsl_cx_db_repo(f)){
    rc = fcli_err_set(FSL_RC_NOT_A_REPO,
                      "Requires a repository db. See --help.");
    goto end;
  }

  if( fcli_flag_or_arg( "v1", "from", &vFrom) ){
    fcli_flag_or_arg( "v2", "to", &vTo);
  }
  if(!vFrom || !vTo){
    rc = fcli_err_set(FSL_RC_MISUSE, "Both of -v1 UUID and -v2 UUID are required.");
    goto end;
  }

  rc = fsl_sym_to_rid(f, vFrom, FSL_CATYPE_CHECKIN, &idFrom);
  if(!rc){
    rc = fsl_sym_to_rid(f, vTo, FSL_CATYPE_CHECKIN, &idTo);
  }
  if(rc) goto end;

  fcli_flag2("g","glob", &VDiffApp.glob);

  rc = f_vdiff( idFrom, idTo );

  if(fcli_has_unused_flags(0)) goto end;

  end:
  fsl_free(VDiffApp.glob);
  return (fcli_err_report(0)||rc) ? EXIT_FAILURE : EXIT_SUCCESS;
}