/*
 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
 * Copyright (C) 1999-2003 Hiroyuki Yamamoto
 *
 * 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.
 */

#ifndef __POP_H__
#define __POP_H__

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include <glib.h>
#include <time.h>

#include "session.h"
#include "prefs_account.h"

typedef struct _Pop3MsgInfo	Pop3MsgInfo;
typedef struct _Pop3Session	Pop3Session;

#define POP3_SESSION(obj)	((Pop3Session *)obj)

typedef enum {
	POP3_READY,
	POP3_GREETING,
#if USE_OPENSSL
	POP3_STLS,
#endif
	POP3_GETAUTH_USER,
	POP3_GETAUTH_PASS,
	POP3_GETAUTH_APOP,
	POP3_GETRANGE_STAT,
	POP3_GETRANGE_LAST,
	POP3_GETRANGE_UIDL,
	POP3_GETRANGE_UIDL_RECV,
	POP3_GETSIZE_LIST,
	POP3_GETSIZE_LIST_RECV,
	POP3_RETR,
	POP3_RETR_RECV,
	POP3_DELETE,
	POP3_LOGOUT,
	POP3_ERROR,

	N_POP3_STATE
} Pop3State;

typedef enum {
	RECV_TIME_NONE     = 0,
	RECV_TIME_RECEIVED = 1,
	RECV_TIME_KEEP     = 2
} RecvTime;

struct _Pop3MsgInfo
{
	gint size;
	gchar *uidl;
	time_t recv_time;
	guint received : 1;
	guint deleted  : 1;
};

struct _Pop3Session
{
	Session session;

	Pop3State state;
	gchar *prev_folder;

	PrefsAccount *ac_prefs;

	gchar *greeting;
	gchar *user;
	gchar *pass;
	gint count;
	gint total_bytes;
	gint cur_msg;
	gint cur_total_num;
	gint cur_total_bytes;
	gint cur_total_recv_bytes;

	Pop3MsgInfo *msg;

	GHashTable *uidl_table;

	gboolean new_msg_exist;
	gboolean uidl_is_valid;

	time_t current_time;

	gint error_val;

	gpointer data;
};

#define POPBUFSIZE	512
#define IDLEN		128

/* exit code values */
#define		PS_SUCCESS	0	/* successful receipt of messages */
#define		PS_NOMAIL	1	/* no mail available */
#define		PS_SOCKET	2	/* socket I/O woes */
#define		PS_AUTHFAIL	3	/* user authorization failed */
#define		PS_PROTOCOL	4	/* protocol violation */
#define		PS_SYNTAX	5	/* command-line syntax error */
#define		PS_IOERR	6	/* bad permissions on rc file */
#define		PS_ERROR	7	/* protocol error */
#define		PS_EXCLUDE	8	/* client-side exclusion error */
#define		PS_LOCKBUSY	9	/* server responded lock busy */
#define		PS_SMTP		10	/* SMTP error */
#define		PS_DNS		11	/* fatal DNS error */
#define		PS_BSMTP	12	/* output batch could not be opened */
#define		PS_MAXFETCH	13	/* poll ended by fetch limit */
/* leave space for more codes */
#define		PS_UNDEFINED	23	/* something I hadn't thought of */
#define		PS_TRANSIENT	24	/* transient failure (internal use) */
#define		PS_REFUSED	25	/* mail refused (internal use) */
#define		PS_RETAINED	26	/* message retained (internal use) */
#define		PS_TRUNCATED	27	/* headers incomplete (internal use) */

#define		PS_CONTINUE	128

Session *pop3_session_new	(PrefsAccount	*account);
GHashTable *pop3_get_uidl_table	(PrefsAccount	*account);
gint pop3_write_uidl_list	(Pop3Session	*session);

#endif /* __POP_H__ */