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// tester.cc
// marvin - programme du robot 2006. {{{
//
// Copyright (C) 2006 Nicolas Schodet
//
// Robot APB Team/Efrei 2006.
//        Web: http://assos.efrei.fr/robot/
//      Email: robot AT efrei DOT fr
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// 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.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// }}}
#include "tester.hh"

#include <unistd.h>	// getopt
#include <exception>	// std::exception
#include <cstdlib>	// std::exit
#include <sstream> 	// std::ostringstream

/// Constructor.
Tester::Tester (int argc, char **argv, const std::string &description)
    : config_ (argc, argv), program_(argv[0]), description_ (description),
    showCmd_ (false)
{
    // Parse command line
    getOpt (argc, argv);
}

/// Getopt command line.
/// Supported arguemnts :
/// - -c 'commands list'
/// - -f <file>
/// - -h : help
/// - -l : list commands suppoted
void
Tester::getOpt (int argc, char **argv)
{
    char *optstring = "hlc:f:";
    int option;
    std::string strTmp;

    // Check number of args
    if (argc < 2)
      {
	std::cerr << "Argument missing." << std::endl;
	usage ();
	std::exit (1);
      }
    
    // Automatic error message
    opterr = 1;

    while ((option = getopt (argc, argv, optstring)) != EOF)
      {
	switch (option)
	  {
	  case 'c':
	    // Check commands
	    commands_ += optarg;
	    break;
	  case 'f':
	    commands_ += ";include \"";
	    commands_ += optarg;
	    commands_ += "\";";
	    break;
	  case 'h':
	    usage ();
	    std::exit (0);
	    break;
	  case 'l':
	    showCmd_ = true;
	    break;
	  case '?':
	  default:
	    usage ();
	    std::exit (2);
	    break;
	  }
      }
    if (commands_.empty () && !showCmd_)
      {
	usage ();
	std::exit (2);
      }
}

/// Print usage to stdout.
void
Tester::usage (void) const
{
    std::cout << "Usage: " << program_
	<< " [-c <commands>]"
	<< " [-f <file>]"
	<< std::endl;
    if (!description_.empty ())
	std::cout << description_ << std::endl;
    std::cout << "   -c <commands>   Commands to run" << std::endl;
    std::cout << "   -f <file>       File with commands" << std::endl;
    std::cout << "   -l              List all known commands by " 
	<< program_ << std::endl;
}

/// Print all knwon function and role to stdout.
void 
Tester::listCmd (void) const
{
    std::cout << "Commands known by " << program_ << " :" << std::endl;
    std::cout << interpreter_.help ();
}

/// Run commands.
void
Tester::run (void)
{
    // Pre-run
    preRun ();
    if (showCmd_)
      {
	listCmd ();
	std::exit (0);
      }
    // Check
    interpreter_.interpretString (commands_, true);
    // Run !
    interpreter_.interpretString (commands_, false);
    // Post-run
    postRun ();
}