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/*
 * CommandParser.h
 *
 * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_CLIENT_COMMANDPARSER_H_
#define MAD_CLIENT_COMMANDPARSER_H_

#include <sigc++/signal.h>
#include <string>
#include <vector>

namespace Mad {

namespace Common {
class Exception;
}

namespace Net {
class Connection;

namespace Packets {
class HostStatusPacket;
class NameListPacket;
}

}

namespace Client {

class CommandParser {
  private:
    struct Command {
      const char* commands[3];
      const char* cmdline;
      const char* desc;
      const char* longdesc;

      void (CommandParser::*funcPtr) (const std::vector<std::string> &args);
    };

    static const Command commands[];

    sigc::signal<void> finished;

    Net::Connection *connection;

    unsigned int activeRequests;
    bool disconnect;

    bool split(const std::string &str, std::vector<std::string> &ret);

    const Command* findCommand(const std::string& command);
    void printUsage(const std::string& command);

    void printHostStatus(const Net::Packets::HostStatusPacket &packet);

    void helpCommand(const std::vector<std::string> &args);
    void listHostsCommand(const std::vector<std::string>&);
    void statusCommand(const std::vector<std::string> &args);
    void exitCommand(const std::vector<std::string>&);

    void coreStatusRequestFinished(const Net::Packets::HostStatusPacket &packet);
    void daemonListRequestFinished(const Net::Packets::NameListPacket &packet);
    void daemonStatusRequestFinished(const Net::Packets::HostStatusPacket &packet);

    void errorCallback(const Common::Exception &exception);

    void requestFinished() {
      activeRequests--;

      finished();
    }

  public:
    CommandParser(Net::Connection *connection0) : connection(connection0), activeRequests(0), disconnect(false) {}

    bool requestsActive() {return (activeRequests > 0);}
    bool willDisconnect() {return disconnect;}

    bool parse(const std::string &cmd);

    void requestDisconnect() {
      exitCommand(std::vector<std::string>());
    }

    sigc::signal<void> signalFinished() const {return finished;}
};

}
}

#endif /* MAD_CLIENT_COMMANDPARSER_H_ */