/*
 * LibSylph -- E-Mail client library
 * Copyright (C) 1999-2006 Hiroyuki Yamamoto
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  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"
#include "utils.h"

typedef struct _Pop3MsgInfo Pop3MsgInfo;
typedef struct _Pop3Session Pop3Session;

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

typedef enum {
    POP3_READY,
    POP3_GREETING,
    POP3_STLS,
    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_DONE,
    POP3_ERROR,

    N_POP3_STATE
} Pop3State;

typedef enum {
    PS_SUCCESS  = 0,    /* command successful */
    PS_NOMAIL   = 1,    /* no mail available */
    PS_SOCKET   = 2,    /* socket I/O woes */
    PS_AUTHFAIL = 3,    /* user authorization failed */
    PS_PROTOCOL = 4,    /* protocol violation */
    PS_SYNTAX   = 5,    /* command-line syntax error */
    PS_IOERR    = 6,    /* file I/O error */
    PS_ERROR    = 7,    /* protocol error */
    PS_EXCLUDE  = 8,    /* client-side exclusion error */
    PS_LOCKBUSY = 9,    /* server responded lock busy */
    PS_SMTP     = 10,   /* SMTP error */
    PS_DNS      = 11,   /* fatal DNS error */
    PS_BSMTP    = 12,   /* output batch could not be opened */
    PS_MAXFETCH = 13,   /* poll ended by fetch limit */

    PS_NOTSUPPORTED = 14,   /* command not supported */

    /* leave space for more codes */

    PS_CONTINUE = 128   /* more responses may follow */
} Pop3ErrorValue;

typedef enum {
    RECV_TIME_NONE     = 0,
    RECV_TIME_RECEIVED = 1,
    RECV_TIME_KEEP     = 2,
    RECV_TIME_DELETE   = 3
} RecvTime;

typedef enum {
    DROP_OK = 0,
    DROP_DONT_RECEIVE = 1,
    DROP_DELETE = 2,
    DROP_ERROR = -1
} Pop3DropValue;

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

struct _Pop3Session {
    Session session;

    Pop3State state;

    PrefsAccount *ac_prefs;

    gchar *greeting;
    gchar *user;
    gchar *pass;
    gint count;
    gint64 total_bytes;
    gint cur_msg;
    gint cur_total_num;
    gint64 cur_total_bytes;
    gint64 cur_total_recv_bytes;
    gint skipped_num;

    Pop3MsgInfo *msg;

    GHashTable *uidl_table;

    gboolean auth_only;

    gboolean new_msg_exist;
    gboolean uidl_is_valid;

    stime_t current_time;

    Pop3ErrorValue error_val;
    gchar *error_msg;

    gpointer data;

    /* virtual method to drop message */
    gint (*drop_message)    (Pop3Session    *session,
                             const gchar    *file);
    gboolean login_suc;
    gboolean blogin_test;
};

#define POPBUFSIZE  512
/* #define IDLEN    128 */
#define IDLEN       POPBUFSIZE

Session *pop3_session_new   (PrefsAccount   *account);

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

#endif /* __POP_H__ */
