/*
 *   ORXONOX - the hottest 3D action shooter ever to exist
 *                    > www.orxonox.net <
 *
 *
 *   License notice:
 *
 *   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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 *   Author:
 *      Fabian 'x3n' Landau
 *   Co-authors:
 *      ...
 *
 */

#include "CommandExecutor.h"

#include "ConsoleCommand.h"
#include "TclBind.h"
#include "Shell.h"

namespace orxonox
{
    static const std::string __CC_CommandExecutor_name = "CommandExecutor";
    static const std::string __CC_autocomplete_name = "autocomplete";

    _SetConsoleCommand(__CC_CommandExecutor_name, __CC_autocomplete_name, &CommandExecutor::_autocomplete)
        .hide()
        .argumentCompleter(0, autocompletion::groupsandcommands())
        .argumentCompleter(1, autocompletion::subcommands());

    /* static */ CommandExecutor& CommandExecutor::getInstance()
    {
        static CommandExecutor instance;
        return instance;
    }

    /* static */ int CommandExecutor::execute(const std::string& command, bool useTcl)
    {
        int error;
        CommandExecutor::queryMT(command, &error, useTcl);
        return error;
    }

    /* static */ MultiType CommandExecutor::queryMT(const std::string& command, int* error, bool useTcl)
    {
        if (useTcl)
            return TclBind::eval(command, error);
        else
            return CommandExecutor::evaluate(command).query(error);
    }

    /* static */ std::string CommandExecutor::query(const std::string& command, int* error, bool useTcl)
    {
        return CommandExecutor::queryMT(command, error, useTcl).getString();
    }

    /* static */ CommandEvaluation CommandExecutor::evaluate(const std::string& command)
    {
        CommandEvaluation evaluation;
        evaluation.initialize(command);

        evaluation.hintCommand_ = _ConsoleCommand::getCommand(__CC_CommandExecutor_name, __CC_autocomplete_name);

        if (evaluation.getNumberOfArguments() >= 1)
        {
            evaluation.execCommand_ = _ConsoleCommand::getCommandLC(evaluation.getToken(0));
            if (evaluation.execCommand_)
                evaluation.execArgumentsOffset_ = 1;
            else if (evaluation.getNumberOfArguments() >= 2)
            {
                evaluation.execCommand_ = _ConsoleCommand::getCommandLC(evaluation.getToken(0), evaluation.getToken(1));
                if (evaluation.execCommand_)
                    evaluation.execArgumentsOffset_ = 2;
            }
        }

        if (evaluation.execCommand_ && evaluation.getNumberOfArguments() > evaluation.execArgumentsOffset_)
        {
            evaluation.hintCommand_ = evaluation.execCommand_;
            evaluation.hintArgumentsOffset_ = evaluation.execArgumentsOffset_;
        }

        return evaluation;
    }
}