/*

 * Hedgewars, a free turn based strategy game

 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>

 *

 * 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.

 */

/*

 * Low-level protocol support for the network connection

 */

#ifndef NETBASE_H_

#define NETBASE_H_

#include <stddef.h>

#include <stdint.h>

#include <stdbool.h>

struct _flib_netbase;

typedef struct _flib_netbase flib_netbase;

typedef struct {

    int partCount;

    char **parts;

} flib_netmsg;

/**

 * Start a connection to the specified Hedgewars server.

 *

 * Returns NULL on error. Destroy the created object with flib_netconn_destroy.

 */

flib_netbase *flib_netbase_create(const char *server, uint16_t port);

/**

 * Free resources and close sockets.

 */

void flib_netbase_destroy(flib_netbase *net);

/**

 * Determine the current connection state. Starts out true, and turns to

 * false when we are disconnected from the server.

 */

bool flib_netbase_connected(flib_netbase *net);

/**

 * Receive a new message and return it as a flib_netmsg. The netmsg has to be

 * destroyed with flib_netmsg_destroy after use.

 * Returns NULL if no message is available.

 *

 * Note: When a connection is closed, you probably want to call this function until

 * no further message is returned, to ensure you see all messages that were sent

 * before the connection closed.

 */

flib_netmsg *flib_netbase_recv_message(flib_netbase *net);

int flib_netbase_send_raw(flib_netbase *net, const void *data, size_t len);

/**

 * Write a single message to the server. This call blocks until the

 * message is completely written or the connection is closed or an error occurs.

 *

 * Returns a negative value on failure.

 */

int flib_netbase_send_message(flib_netbase *net, const flib_netmsg *msg);

/**

 * Send a message printf-style.

 *

 * flib_netbase_sendf(net, "%s\n\n", "TOGGLE_READY");

 * flib_netbase_sendf(net, "%s\n%s\n%i\n\n", "CFG", "MAPGEN", MAPGEN_MAZE);

 */

int flib_netbase_sendf(flib_netbase *net, const char *format, ...);

flib_netmsg *flib_netmsg_create();

void flib_netmsg_destroy(flib_netmsg *msg);

int flib_netmsg_append_part(flib_netmsg *msg, const void *param, size_t len);

#endif /* NETBASE_H_ */