/*
 * IRC protocol support for Ayttm
 *
 * Copyright (C) 2001, Erik Inge Bolso <knan@mo.himolde.no>
 *                     and others
 *
 * 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
 *
 */

/*
 * irc.h
 */

#include "libproxy/networking.h"

/* RFC1459 and RFC2812 defines max message size
   including \n == 512 bytes, but being tolerant of
   violations is nice nevertheless. */
#define BUF_LEN 512*2

#define AY_IRC_GET_HANDLE(handle,nick,addr,size) {\
	strncpy(handle, nick, size);\
	strncat(handle, "@", size-strlen(handle));\
	strncat(handle, addr, size-strlen(handle));\
}

#define DBG_IRC do_irc_debug

typedef struct irc_local_account_type {
	char password[MAX_PREF_LEN];
	int fd_tag;
	int keepalive_tag;
	int connect_tag;
	int activity_tag;
	char *buff;
	int buff_user;
	LList *friends;
	LList *channel_list;
	LList *current_rooms;
	irc_account *ia;
	void (*got_public_chatrooms) (LList *list, void *data);
	void *public_chatroom_callback_data;
	AyConnection *connection;
} irc_local_account;

typedef struct irc_account_type {
	char server[255];
	char realserver[255];
	int status;
	int idle;
	gboolean dummy;
} ay_irc_account;

typedef struct _irc_info {
	char *whois_info;
	eb_account *me;
	char *fullmessage;
} irc_info;

static int is_setting_state = 0;

/* Denotes the end of list in irc_command_action array (irc_ca) ... */
#define IRC_END_COMMAND         ""

/* Max command and action strings length in an irc_command_action struct */
#define MAX_IRC_COMMAND_LEN 255
#define MAX_IRC_ACTION_LEN 255

/* IRC_COMMAND_TYPE: type of command in an irc_command_action struct. */
enum IRC_COMMAND_TYPE {
	IRC_COMMAND_BUILTIN = 1,
	IRC_COMMAND_USER_DEF = 2
};

enum {
	IRC_WELCOME = 0xaa77aa,
	IRC_TOPIC = 0x775500,
	IRC_MOTD = 0x885588,
	IRC_KICK = 0xAA6600,
	IRC_CTCP_TIME = 0xaabb44,
	IRC_CTCP_ACTION = 0x00aa00,
	IRC_CTCP_VERSION = 0x00bbbb
};

typedef struct irc_command_action_type {
	char command[MAX_IRC_COMMAND_LEN];
	char action[MAX_IRC_ACTION_LEN];
	enum IRC_COMMAND_TYPE command_type;
} irc_command_action;

/* Local prototypes */
static int ay_irc_query_connected(eb_account *account);
static void ay_irc_login(eb_local_account *account);
static void ay_irc_logout(eb_local_account *ela);
static int ay_irc_send_im(eb_local_account *account_from,
	eb_account *account_to, char *message);
static eb_local_account *ay_irc_read_local_config(LList *pairs);
static LList *ay_irc_write_local_config(eb_local_account *account);
static eb_account *ay_irc_read_config(eb_account *ea, LList *config);
static LList *ay_irc_get_states();
static int ay_irc_get_current_state(eb_local_account *account);
static void ay_irc_set_current_state(eb_local_account *account, int state);
static char *ay_irc_check_login(const char *user, const char *pass);
static void ay_irc_add_user(eb_account *account);
static void ay_irc_del_user(eb_account *account);
static int ay_irc_is_suitable(eb_local_account *local, eb_account *remote);
static eb_account *ay_irc_new_account(eb_local_account *ela,
	const char *account);
static const char *ay_irc_get_status_string(eb_account *account);
static void *ay_irc_get_status_pixbuf(eb_account *account);
static void ay_irc_set_idle(eb_local_account *account, int idle);
static void ay_irc_set_away(eb_local_account *account, char *message, int away);
static void ay_irc_send_file(eb_local_account *from, eb_account *to,
	char *file);
static void irc_info_update(info_window *iw);
static void irc_info_data_cleanup(info_window *iw);
static void ay_irc_get_info(eb_local_account *account_from,
	eb_account *account_to);
static void ay_irc_join_chat_room(Conversation *room);
static void ay_irc_leave_chat_room(Conversation *room);
static int ay_irc_send_chat_room_message(Conversation *room, char *message);
static void ay_irc_send_invite(eb_local_account *account, Conversation *room,
	char *user, const char *message);
static Conversation *ay_irc_make_chat_room(char *name,
	eb_local_account *account, int is_public);
static Conversation *ay_irc_start_conversation(const char *name,
	eb_local_account *account, int is_room, int is_public, int send_join);
static void ay_irc_accept_invite(eb_local_account *account, void *invitation);
static void ay_irc_decline_invite(eb_local_account *account, void *invitation);
static void eb_irc_read_prefs_config(LList *values);
static LList *eb_irc_write_prefs_config();
static void irc_connect_cb(AyConnection *con, AyConnectionStatus error,
	void *data);

void irc_finish_login(eb_local_account *ela);
static irc_callbacks *ay_irc_map_callbacks(void);