path: root/addressbook/backend/ebook/e-destination.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 * e-destination.c
 *
 * Copyright (C) 2001 Ximian, Inc.
 *
 * Developed by Jon Trowbridge <trow@ximian.com>
 */

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 * 
 * 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.
 */

#include <config.h>
#include "e-destination.h"

#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "e-book.h"
#include "e-book-marshal.h"
#include "e-book-util.h"
#include <gal/widgets/e-unicode.h>

#include <glib.h>
#include <libxml/xmlmemory.h>
#include <camel/camel-internet-address.h>

#define d(x)

enum {
    CHANGED,
    CARDIFIED,
    LAST_SIGNAL
};

guint e_destination_signals[LAST_SIGNAL] = { 0 };

struct _EDestinationPrivate {
    gchar *raw;

    gchar *book_uri;
    gchar *card_uid;
    ECard *card;
    gint card_email_num;

    ECard *old_card;
    gint old_card_email_num;
    gchar *old_textrep;

    gchar *name;
    gchar *email;
    gchar *addr;
    gchar *textrep;

    GList *list_dests;

    guint html_mail_override : 1;
    guint wants_html_mail : 1;

    guint show_addresses : 1;

    guint has_been_cardified : 1;
    guint allow_cardify : 1;
    guint cannot_cardify : 1;
    guint auto_recipient : 1;
    guint pending_cardification;

    guint pending_change : 1;

    EBook *cardify_book;

    gint freeze_count;
};

static void e_destination_clear_card    (EDestination *);
static void e_destination_clear_strings (EDestination *);

static GObjectClass *parent_class;

static void
e_destination_dispose (GObject *obj)
{
    EDestination *dest = E_DESTINATION (obj);

    if (dest->priv) {
        e_destination_clear (dest);

        if (dest->priv->old_card)
            g_object_unref (dest->priv->old_card);
    
        if (dest->priv->cardify_book)
            g_object_unref (dest->priv->cardify_book);

        g_free (dest->priv->old_textrep);

        g_free (dest->priv);
        dest->priv = NULL;
    }
}

static void
e_destination_class_init (EDestinationClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    parent_class = g_type_class_ref (G_TYPE_OBJECT);

    object_class->dispose = e_destination_dispose;

    e_destination_signals[CHANGED] =
        g_signal_new ("changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EDestinationClass, changed),
                  NULL, NULL,
                  e_book_marshal_NONE__NONE,
                  G_TYPE_NONE, 0);

    e_destination_signals[CARDIFIED] =
        g_signal_new ("cardified",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EDestinationClass, cardified),
                  NULL, NULL,
                  e_book_marshal_NONE__NONE,
                  G_TYPE_NONE, 0);
}

static void
e_destination_init (EDestination *dest)
{
    dest->priv = g_new0 (struct _EDestinationPrivate, 1);

    dest->priv->allow_cardify = TRUE;
    dest->priv->cannot_cardify = FALSE;
    dest->priv->auto_recipient = FALSE;
    dest->priv->pending_cardification = 0;
}

GType
e_destination_get_type (void)
{
    static GType dest_type = 0;

    if (!dest_type) {
        GTypeInfo dest_info = {
            sizeof (EDestinationClass),
            NULL, /* base_class_init */
            NULL, /* base_class_finalize */
            (GClassInitFunc)  e_destination_class_init,
            NULL, /* class_finalize */
            NULL, /* class_data */
            sizeof (EDestination),
            0,    /* n_preallocs */
            (GInstanceInitFunc) e_destination_init
        };

        dest_type = g_type_register_static (G_TYPE_OBJECT, "EDestination", &dest_info, 0);
    }

    return dest_type;
}

EDestination *
e_destination_new (void)
{
    return g_object_new (E_TYPE_DESTINATION, NULL);
}

static void
e_destination_freeze (EDestination *dest)
{
    g_return_if_fail (E_IS_DESTINATION (dest));
    g_return_if_fail (dest->priv->freeze_count >= 0);
    
    dest->priv->freeze_count++;
}

static void
e_destination_thaw (EDestination *dest)
{
    g_return_if_fail (E_IS_DESTINATION (dest));
    g_return_if_fail (dest->priv->freeze_count > 0);
    
    dest->priv->freeze_count--;
    if (dest->priv->freeze_count == 0 && dest->priv->pending_change)
        e_destination_changed (dest);
}

void
e_destination_changed (EDestination *dest)
{
    if (dest->priv->freeze_count == 0) {
        g_signal_emit (dest, e_destination_signals[CHANGED], 0);
        dest->priv->pending_change = FALSE;
        dest->priv->cannot_cardify = FALSE;
    
    } else {
        dest->priv->pending_change = TRUE;
    }
}

EDestination *
e_destination_copy (const EDestination *dest)
{
    EDestination *new_dest;
    GList *iter;

    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);

    new_dest = e_destination_new ();

    new_dest->priv->book_uri           = g_strdup (dest->priv->book_uri);
    new_dest->priv->card_uid           = g_strdup (dest->priv->card_uid);
    new_dest->priv->name               = g_strdup (dest->priv->name);
    new_dest->priv->email              = g_strdup (dest->priv->email);
    new_dest->priv->addr               = g_strdup (dest->priv->addr);
    new_dest->priv->card_email_num     = dest->priv->card_email_num;
    new_dest->priv->old_card_email_num = dest->priv->old_card_email_num;
    new_dest->priv->old_textrep        = g_strdup (dest->priv->old_textrep);

    new_dest->priv->card     = dest->priv->card;
    if (new_dest->priv->card)
        g_object_ref (new_dest->priv->card);

    new_dest->priv->old_card = dest->priv->old_card;
    if (new_dest->priv->old_card)
        g_object_ref (new_dest->priv->old_card);

    new_dest->priv->html_mail_override = dest->priv->html_mail_override;
    new_dest->priv->wants_html_mail    = dest->priv->wants_html_mail;

    for (iter = dest->priv->list_dests; iter != NULL; iter = g_list_next (iter)) {
        new_dest->priv->list_dests = g_list_append (new_dest->priv->list_dests,
                                e_destination_copy (E_DESTINATION (iter->data)));
    }

    return new_dest;
}

static void
e_destination_clear_card (EDestination *dest)
{
    if (dest->priv->card) {
        if (dest->priv->old_card)
            g_object_unref (dest->priv->old_card);
        
        dest->priv->old_card = dest->priv->card;
        dest->priv->old_card_email_num = dest->priv->card_email_num;
        
        g_free (dest->priv->old_textrep);
        dest->priv->old_textrep = g_strdup (e_destination_get_textrep (dest, FALSE));
    }
    
    g_free (dest->priv->book_uri);
    dest->priv->book_uri = NULL;
    g_free (dest->priv->card_uid);
    dest->priv->card_uid = NULL;
    
    dest->priv->card = NULL;
    dest->priv->card_email_num = -1;
    
    g_list_foreach (dest->priv->list_dests, (GFunc) g_object_unref, NULL);
    g_list_free (dest->priv->list_dests);
    dest->priv->list_dests = NULL;
    
    dest->priv->allow_cardify = TRUE;
    dest->priv->cannot_cardify = FALSE;
    
    e_destination_cancel_cardify (dest);
    
    e_destination_changed (dest);
}

static void
e_destination_clear_strings (EDestination *dest)
{
    g_free (dest->priv->raw);
    dest->priv->raw = NULL;
    
    g_free (dest->priv->name);
    dest->priv->name = NULL;
    
    g_free (dest->priv->email);
    dest->priv->email = NULL;
    
    g_free (dest->priv->addr);
    dest->priv->addr = NULL;
    
    g_free (dest->priv->textrep);
    dest->priv->textrep = NULL;
    
    e_destination_changed (dest);
}

void
e_destination_clear (EDestination *dest)
{
    g_return_if_fail (dest && E_IS_DESTINATION (dest));
    
    e_destination_freeze (dest);
    
    e_destination_clear_card (dest);
    e_destination_clear_strings (dest);
    
    e_destination_thaw (dest);
}

static gboolean
nonempty (const gchar *s)
{
    gunichar c;
    while (*s) {
        c = g_utf8_get_char (s);
        if (!g_unichar_isspace (c))
            return TRUE;
        s = g_utf8_next_char (s);
    }
    return FALSE;
}

gboolean
e_destination_is_empty (const EDestination *dest)

{
    struct _EDestinationPrivate *p;
    
    g_return_val_if_fail (E_IS_DESTINATION (dest), TRUE);
    
    p = dest->priv;
    
    return !(p->card != NULL
         || (p->book_uri && *p->book_uri)
         || (p->card_uid && *p->card_uid)
         || (p->raw && nonempty (p->raw))
         || (p->name && nonempty (p->name))
         || (p->email && nonempty (p->email))
         || (p->addr && nonempty (p->addr))
         || (p->list_dests != NULL));
}

gboolean
e_destination_is_valid (const EDestination *dest)
{
    const char *email;
    
    g_return_val_if_fail (E_IS_DESTINATION (dest), FALSE);
    
    if (e_destination_from_card (dest))
        return TRUE;
    
    email = e_destination_get_email (dest);
    
    /* FIXME: if we really wanted to get fancy here, we could
           check to make sure that the address was valid according to
           rfc822's addr-spec grammar. */
    
    return email && *email && strchr (email, '@');
}

gboolean
e_destination_equal (const EDestination *a, const EDestination *b)
{
    const struct _EDestinationPrivate *pa, *pb;
    const char *na, *nb;
    
    g_return_val_if_fail (E_IS_DESTINATION (a), FALSE);
    g_return_val_if_fail (E_IS_DESTINATION (b), FALSE);
    
    if (a == b)
        return TRUE;
    
    pa = a->priv;
    pb = b->priv;
    
    /* Check equality of cards. */
    if (pa->card || pb->card) {
        if (! (pa->card && pb->card))
            return FALSE;
        
        if (pa->card == pb->card || !strcmp (e_card_get_id (pa->card), e_card_get_id (pb->card)))
            return TRUE;
        
        return FALSE;
    }
    
    /* Just in case name returns NULL */
    na = e_destination_get_name (a);
    nb = e_destination_get_name (b);
    if ((na || nb) && !(na && nb && ! e_utf8_casefold_collate (na, nb)))
        return FALSE;
    
    if (!g_ascii_strcasecmp (e_destination_get_email (a), e_destination_get_email (b)))
        return TRUE;
    else
        return FALSE;
}

void
e_destination_set_card (EDestination *dest, ECard *card, gint email_num)
{
    g_return_if_fail (dest && E_IS_DESTINATION (dest));
    g_return_if_fail (card && E_IS_CARD (card));
    
    if (dest->priv->card != card || dest->priv->card_email_num != email_num) {
        /* We have to freeze/thaw around these operations so that the 'changed'
           signals don't cause the EDestination's internal state to be altered
           before we can finish setting ->card && ->card_email_num. */
        e_destination_freeze (dest);
        e_destination_clear (dest);
        
        dest->priv->card = card;
        g_object_ref (dest->priv->card);
        
        dest->priv->card_email_num = email_num;
        
        e_destination_changed (dest);
        e_destination_thaw (dest);
    }
}

void
e_destination_set_book_uri (EDestination *dest, const gchar *uri)
{
    g_return_if_fail (dest && E_IS_DESTINATION (dest));
    g_return_if_fail (uri != NULL);
    
    if (dest->priv->book_uri == NULL || strcmp (dest->priv->book_uri, uri)) {
        g_free (dest->priv->book_uri);
        dest->priv->book_uri = g_strdup (uri);
        
        /* If we already have a card, remove it unless it's uri matches the one
           we just set. */
        if (dest->priv->card) {
            EBook *book = e_card_get_book (dest->priv->card);
            if ((!book) || strcmp (uri, e_book_get_uri (book))) {
                g_object_unref (dest->priv->card);
                dest->priv->card = NULL;
            }
        }
        
        e_destination_changed (dest);
    }
}

void
e_destination_set_card_uid (EDestination *dest, const gchar *uid, gint email_num)
{
    g_return_if_fail (dest && E_IS_DESTINATION (dest));
    g_return_if_fail (uid != NULL);
    
    if (dest->priv->card_uid == NULL
        || strcmp (dest->priv->card_uid, uid)
        || dest->priv->card_email_num != email_num) {
        
        g_free (dest->priv->card_uid);
        dest->priv->card_uid = g_strdup (uid);
        dest->priv->card_email_num = email_num;
        
        /* If we already have a card, remove it unless it's uri matches the one
           we just set. */
        if (dest->priv->card && strcmp (uid, e_card_get_id (dest->priv->card))) {
            g_object_unref (dest->priv->card);
            dest->priv->card = NULL;
        }
        
        e_destination_changed (dest);
    }
}

void
e_destination_set_name (EDestination *dest, const gchar *name)
{
    gboolean changed = FALSE;
    
    g_return_if_fail (E_IS_DESTINATION (dest));
    
    if (name == NULL) {
        if (dest->priv->name != NULL) {
            g_free (dest->priv->name);
            dest->priv->name = NULL;
            changed = TRUE;
        }
    } else if (dest->priv->name == NULL || strcmp (dest->priv->name, name)) {
        g_free (dest->priv->name);
        dest->priv->name = g_strdup (name);
        changed = TRUE;
    }
    
    if (changed) {
        g_free (dest->priv->addr);
        dest->priv->addr = NULL;
        g_free (dest->priv->textrep);
        dest->priv->textrep = NULL;
        e_destination_changed (dest);
    }
}

void
e_destination_set_email (EDestination *dest, const gchar *email)
{
    gboolean changed = FALSE;
    
    g_return_if_fail (E_IS_DESTINATION (dest));
    
    if (email == NULL) {
        if (dest->priv->email != NULL) {
            g_free (dest->priv->addr);
            dest->priv->addr = NULL;
            changed = TRUE;
        }
    } else if (dest->priv->email == NULL || strcmp (dest->priv->email, email)) {
        g_free (dest->priv->email);
        dest->priv->email = g_strdup (email);
        changed = TRUE;
    }
    
    if (changed) {
        g_free (dest->priv->addr);
        dest->priv->addr = NULL;
        g_free (dest->priv->textrep);
        dest->priv->textrep = NULL;
        e_destination_changed (dest);
    }
}

void
e_destination_set_html_mail_pref (EDestination *dest, gboolean x)
{
    g_return_if_fail (dest && E_IS_DESTINATION (dest));
    
    dest->priv->html_mail_override = TRUE;
    if (dest->priv->wants_html_mail != x) {
        dest->priv->wants_html_mail = x;
        e_destination_changed (dest);
    }
}

gboolean
e_destination_contains_card (const EDestination *dest)
{
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), FALSE);
    return dest->priv->card != NULL;
}

gboolean
e_destination_from_card (const EDestination *dest)
{
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), FALSE);
    return dest->priv->card != NULL || dest->priv->book_uri != NULL || dest->priv->card_uid != NULL;
}

gboolean
e_destination_is_auto_recipient (const EDestination *dest)
{
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), FALSE);
    
    return dest->priv->auto_recipient;
}

void
e_destination_set_auto_recipient (EDestination *dest, gboolean value)
{
    g_return_if_fail (dest && E_IS_DESTINATION (dest));
    
    dest->priv->auto_recipient = value;
}

typedef struct _UseCard UseCard;
struct _UseCard {
    EDestination *dest;
    EDestinationCardCallback cb;
    gpointer closure;
};

static void
use_card_cb (ECard *card, gpointer closure)
{
    UseCard *uc = (UseCard *) closure;
    
    if (card != NULL && uc->dest->priv->card == NULL) {
        uc->dest->priv->card = card;
        g_object_ref (uc->dest->priv->card);
        e_destination_changed (uc->dest);
    }
    
    if (uc->cb) {
        uc->cb (uc->dest, uc->dest->priv->card, uc->closure);
    }
    
    /* We held a copy of the destination during the callback. */
    g_object_unref (uc->dest);
    g_free (uc);
}

void
e_destination_use_card (EDestination *dest, EDestinationCardCallback cb, gpointer closure)
{
    g_return_if_fail (dest && E_IS_DESTINATION (dest));
    
    if (dest->priv->card != NULL) {
        if (cb)
            cb (dest, dest->priv->card, closure);
    } else if (dest->priv->book_uri != NULL && dest->priv->card_uid != NULL) {
        UseCard *uc = g_new (UseCard, 1);
        
        uc->dest = dest;
        /* Hold a reference to the destination during the callback. */
        g_object_ref (uc->dest);
        uc->cb = cb;
        uc->closure = closure;
        e_card_load_uri (dest->priv->book_uri, dest->priv->card_uid, use_card_cb, uc);
    } else {
        if (cb)
            cb (dest, NULL, closure);
    }
}

ECard *
e_destination_get_card (const EDestination *dest)
{
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);
    
    return dest->priv->card;
}

const gchar *
e_destination_get_card_uid (const EDestination *dest)
{
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);
    
    if (dest->priv->card_uid)
        return dest->priv->card_uid;
    
    if (dest->priv->card)
        return e_card_get_id (dest->priv->card);
    
    return NULL;
}

const gchar *
e_destination_get_book_uri (const EDestination *dest)
{
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);
    
    if (dest->priv->book_uri)
        return dest->priv->book_uri;
    
    if (dest->priv->card) {
        EBook *book = e_card_get_book (dest->priv->card);
        
        if (book) {
            return e_book_get_uri (book);
        }
    }
    
    return NULL;
}

gint
e_destination_get_email_num (const EDestination *dest)
{
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), -1);
    
    if (dest->priv->card == NULL && (dest->priv->book_uri == NULL || dest->priv->card_uid == NULL))
        return -1;
    
    return dest->priv->card_email_num;
}

const gchar *
e_destination_get_name (const EDestination *dest)
{
    struct _EDestinationPrivate *priv;
    
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);
    
    priv = (struct _EDestinationPrivate *)dest->priv; /* cast out const */
    
    if (priv->name == NULL) {
        if (priv->card != NULL) {
            priv->name = e_card_name_to_string (priv->card->name);
            
            if (priv->name == NULL || *priv->name == '\0') {
                g_free (priv->name);
                priv->name = g_strdup (priv->card->file_as);
            }
            
            if (priv->name == NULL || *priv->name == '\0') {
                g_free (priv->name);
                if (e_card_evolution_list (priv->card))
                    priv->name = g_strdup (_("Unnamed List"));
                else
                    priv->name = g_strdup (e_destination_get_email (dest));
            }
        } else if (priv->raw != NULL) {
            CamelInternetAddress *addr = camel_internet_address_new ();
            
            if (camel_address_unformat (CAMEL_ADDRESS (addr), priv->raw)) {
                const char *camel_name = NULL;
                
                camel_internet_address_get (addr, 0, &camel_name, NULL);
                priv->name = g_strdup (camel_name);
            }
            
            camel_object_unref (CAMEL_OBJECT (addr));
        }
    }
    
    return priv->name;
}

const gchar *
e_destination_get_email (const EDestination *dest)
{
    struct _EDestinationPrivate *priv;
    
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);
    
    priv = (struct _EDestinationPrivate *)dest->priv; /* cast out const */
    
    if (priv->email == NULL) {
        if (priv->card != NULL) {
            /* Pull the address out of the card. */
            if (priv->card->email) {
                EIterator *iter = e_list_get_iterator (priv->card->email);
                int n = priv->card_email_num;
                
                if (n >= 0) {
                    while (n > 0) {
                        e_iterator_next (iter);
                        n--;
                    }
                    
                    if (e_iterator_is_valid (iter)) {
                        gconstpointer ptr = e_iterator_get (iter);
                        priv->email = g_strdup ((char *) ptr);
                    }
                }
            } 
        } else if (priv->raw != NULL) {
            CamelInternetAddress *addr = camel_internet_address_new ();
            
            if (camel_address_unformat (CAMEL_ADDRESS (addr), priv->raw)) {
                const gchar *camel_email = NULL;
                camel_internet_address_get (addr, 0, NULL, &camel_email);
                priv->email = g_strdup (camel_email);
            }
            
            camel_object_unref (CAMEL_OBJECT (addr));
        } 
        
        /* Force e-mail to be non-null... */
        if (priv->email == NULL) {
            priv->email = g_strdup ("");
        }
    }
    
    return priv->email;
}

const gchar *
e_destination_get_address (const EDestination *dest)
{
    struct _EDestinationPrivate *priv;
    
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);
    
    priv = (struct _EDestinationPrivate *)dest->priv; /* cast out const */
    
    if (priv->addr == NULL) {
        CamelInternetAddress *addr = camel_internet_address_new ();
        
        if (e_destination_is_evolution_list (dest)) {
            GList *iter = dest->priv->list_dests;
            
            while (iter) {
                EDestination *list_dest = E_DESTINATION (iter->data);
                
                if (!e_destination_is_empty (list_dest)) {
                    camel_internet_address_add (addr, 
                                    e_destination_get_name (list_dest),
                                    e_destination_get_email (list_dest));
                }
                iter = g_list_next (iter);
            }
            
            priv->addr = camel_address_encode (CAMEL_ADDRESS (addr));
        } else if (priv->raw) {

            if (camel_address_unformat (CAMEL_ADDRESS (addr), priv->raw)) {
                priv->addr = camel_address_encode (CAMEL_ADDRESS (addr));
            }
        } else {
            camel_internet_address_add (addr,
                            e_destination_get_name (dest),
                            e_destination_get_email (dest));
            
            priv->addr = camel_address_encode (CAMEL_ADDRESS (addr));
        }
        
        camel_object_unref (CAMEL_OBJECT (addr));
    }
    
    return priv->addr;
}

void
e_destination_set_raw (EDestination *dest, const gchar *raw)
{
    g_return_if_fail (E_IS_DESTINATION (dest));
    g_return_if_fail (raw != NULL);
    
    if (dest->priv->raw == NULL || strcmp (dest->priv->raw, raw)) {
        e_destination_freeze (dest);
        
        e_destination_clear (dest);
        dest->priv->raw = g_strdup (raw);
        e_destination_changed (dest);
        
        e_destination_thaw (dest);
    }
}

const gchar *
e_destination_get_textrep (const EDestination *dest, gboolean include_email)
{
    const char *name, *email;
    
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);
    
    if (dest->priv->raw)
        return dest->priv->raw;
    
    name  = e_destination_get_name (dest);
    email = e_destination_get_email (dest);
    
    if (e_destination_from_card (dest) && name != NULL && (!include_email || !email || !*email))
        return name;
    
    /* Make sure that our address gets quoted properly */
    if (name && email && dest->priv->textrep == NULL) {
        CamelInternetAddress *addr = camel_internet_address_new ();
        
        camel_internet_address_add (addr, name, email);
        g_free (dest->priv->textrep);
        dest->priv->textrep = camel_address_format (CAMEL_ADDRESS (addr));
        camel_object_unref (CAMEL_OBJECT (addr));
    }
    
    if (dest->priv->textrep != NULL)
        return dest->priv->textrep;

    if (email)
        return email;
    
    return "";
}

gboolean
e_destination_is_evolution_list (const EDestination *dest)
{
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), FALSE);
    
    if (dest->priv->list_dests == NULL
        && dest->priv->card != NULL
        && dest->priv->card->email != NULL
        && e_card_evolution_list (dest->priv->card)) {
        
        EIterator *iter = e_list_get_iterator (dest->priv->card->email);
        
        e_iterator_reset (iter);
        while (e_iterator_is_valid (iter)) {
            const char *dest_xml = (const char *) e_iterator_get (iter);
            EDestination *list_dest = e_destination_import (dest_xml);
            
            if (list_dest)
                dest->priv->list_dests = g_list_append (dest->priv->list_dests, list_dest);
            e_iterator_next (iter);
        }
    }
    
    return dest->priv->list_dests != NULL;
}

gboolean
e_destination_list_show_addresses (const EDestination *dest)
{
    g_return_val_if_fail (E_IS_DESTINATION (dest), FALSE);
    
    if (dest->priv->card != NULL)
        return e_card_evolution_list_show_addresses (dest->priv->card);
    
    return dest->priv->show_addresses;
}

gboolean
e_destination_get_html_mail_pref (const EDestination *dest)
{
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), FALSE);
    
    if (dest->priv->html_mail_override || dest->priv->card == NULL)
        return dest->priv->wants_html_mail;
    
    return dest->priv->card->wants_html;
}

gboolean
e_destination_allow_cardification (const EDestination *dest)
{
    g_return_val_if_fail (E_IS_DESTINATION (dest), FALSE);
    
    return dest->priv->allow_cardify;
}

void
e_destination_set_allow_cardification (EDestination *dest, gboolean x)
{
    g_return_if_fail (E_IS_DESTINATION (dest));
    
    dest->priv->allow_cardify = x;
}

static void
set_cardify_book (EDestination *dest, EBook *book)
{
    if (dest->priv->cardify_book && dest->priv->cardify_book != book) {
        g_object_unref (dest->priv->cardify_book);
    }
        
    dest->priv->cardify_book = book;
    
    if (book)
        g_object_ref (book);
}

static void
name_and_email_simple_query_cb (EBook *book, EBookSimpleQueryStatus status, const GList *cards, gpointer closure)
{
    EDestination *dest = E_DESTINATION (closure);
    
    if (status == E_BOOK_SIMPLE_QUERY_STATUS_SUCCESS && g_list_length ((GList *) cards) == 1) {
        ECard *card = E_CARD (cards->data);
        const char *email = e_destination_get_email (dest);
        int email_num = 0;
        
        if (e_destination_is_valid (dest) && email && *email) {
            email_num = e_card_email_find_number (card, e_destination_get_email (dest));
        }
        
        if (email_num >= 0) {
            const char *book_uri;
            
            book_uri = e_book_get_uri (book);
            
            dest->priv->has_been_cardified = TRUE;
            e_destination_set_card (dest, card, email_num);
            e_destination_set_book_uri (dest, book_uri);
            g_signal_emit (dest, e_destination_signals[CARDIFIED], 0);
        }
    }
    
    if (!dest->priv->has_been_cardified) {
        dest->priv->cannot_cardify = TRUE;
    }
    
    g_object_unref (dest); /* drop the reference held by the query */
}


static void
nickname_simple_query_cb (EBook *book, EBookSimpleQueryStatus status, const GList *cards, gpointer closure)
{
    EDestination *dest = E_DESTINATION (closure);
    
    if (status == E_BOOK_SIMPLE_QUERY_STATUS_SUCCESS) {
        if (g_list_length ((GList *) cards) == 1) {
            const char *book_uri;
            
            book_uri = e_book_get_uri (book);
            
            dest->priv->has_been_cardified = TRUE;
            e_destination_set_card (dest, E_CARD (cards->data), 0); /* Uses primary e-mail by default. */
            e_destination_set_book_uri (dest, book_uri);
            g_signal_emit (dest, e_destination_signals[CARDIFIED], 0);
            
            g_object_unref (dest); /* drop the reference held by the query */
            
        } else {
            /* We can only end up here if we don't look at all like an e-mail address, so
               we do a name-only query on the textrep */
            
            e_book_name_and_email_query (book,
                             e_destination_get_textrep (dest, FALSE),
                             NULL,
                             name_and_email_simple_query_cb,
                             dest);
        }
    } else {
        /* Something went wrong with the query: drop our ref to the destination and return. */
        g_object_unref (dest);
    }
}

static void
launch_cardify_query (EDestination *dest)
{
    if (! e_destination_is_valid (dest)) {
        /* If it doesn't look like an e-mail address, see if it is a nickname. */
        e_book_nickname_query (dest->priv->cardify_book,
                       e_destination_get_textrep (dest, FALSE),
                       nickname_simple_query_cb,
                       dest);

    } else {
        e_book_name_and_email_query (dest->priv->cardify_book,
                         e_destination_get_name (dest),
                         e_destination_get_email (dest),
                         name_and_email_simple_query_cb,
                         dest);
    }
}

static void
use_default_book_cb (EBook *book, gpointer closure)
{
    EDestination *dest = E_DESTINATION (closure);
    if (dest->priv->cardify_book == NULL) {
        dest->priv->cardify_book = book;
        g_object_ref (book);
    }
    
    launch_cardify_query (dest);
}


static gboolean
e_destination_reverting_is_a_good_idea (EDestination *dest)
{
    const char *textrep;
    int len, old_len;
    
    g_return_val_if_fail (E_IS_DESTINATION (dest), FALSE);
    if (dest->priv->old_textrep == NULL)
        return FALSE;
    
    textrep = e_destination_get_textrep (dest, FALSE);
    
    len = g_utf8_strlen (textrep, -1);
    old_len = g_utf8_strlen (dest->priv->old_textrep, -1);
    
    if (len <= old_len/2)
        return FALSE;
    
    return TRUE;
}

void
e_destination_cardify (EDestination *dest, EBook *book)
{
    g_return_if_fail (E_IS_DESTINATION (dest));
    g_return_if_fail (book == NULL || E_IS_BOOK (book));
    
    if (e_destination_is_evolution_list (dest))
        return;
    
    if (e_destination_contains_card (dest))
        return;
    
    if (!dest->priv->allow_cardify)
        return;
    
    if (dest->priv->cannot_cardify)
        return;
    
    e_destination_cancel_cardify (dest);
    
    /* In some cases, we can revert to the previous card. */
    if (!e_destination_is_valid (dest)
        && e_destination_reverting_is_a_good_idea (dest)
        && e_destination_revert (dest)) {
        return;
    }
    
    set_cardify_book (dest, book);
    
    /* Handle the case of an EDestination containing a card URL */
    if (e_destination_contains_card (dest)) {
        e_destination_use_card (dest, NULL, NULL);
        return;
    }
    
    /* If we have a book ready, proceed.  We hold a reference to ourselves
       until our query is complete. */
    g_object_ref (dest);
    if (dest->priv->cardify_book != NULL) {
        launch_cardify_query (dest);
    } else {
        e_book_use_default_book (use_default_book_cb, dest);
    }
}

static int
do_cardify_delayed (gpointer ptr)
{
    EDestination *dest = E_DESTINATION (ptr);
    
    e_destination_cardify (dest, dest->priv->cardify_book);
    return FALSE;
}

void
e_destination_cardify_delayed (EDestination *dest, EBook *book, gint delay)
{
    g_return_if_fail (E_IS_DESTINATION (dest));
    g_return_if_fail (book == NULL || E_IS_BOOK (book));
    
    if (delay < 0)
        delay = 500;
    
    e_destination_cancel_cardify (dest);
    
    set_cardify_book (dest, book);
    
    dest->priv->pending_cardification = g_timeout_add (delay, do_cardify_delayed, dest);
}

void
e_destination_cancel_cardify (EDestination *dest)
{
    g_return_if_fail (E_IS_DESTINATION (dest));
    
    if (dest->priv->pending_cardification) {
        g_source_remove (dest->priv->pending_cardification);
        dest->priv->pending_cardification = 0;
    }
}

gboolean
e_destination_uncardify (EDestination *dest)
{
    char *email;
    
    g_return_val_if_fail (E_IS_DESTINATION (dest), FALSE);
    
    if (!e_destination_contains_card (dest))
        return FALSE;
    
    email = g_strdup (e_destination_get_email (dest));
    
    if (email == NULL)
        return FALSE;
    
    e_destination_freeze (dest);
    e_destination_clear (dest);
    e_destination_set_raw (dest, email);
    g_free (email);
    e_destination_thaw (dest);
    
    return TRUE;
}

gboolean
e_destination_revert (EDestination *dest)
{
    g_return_val_if_fail (E_IS_DESTINATION (dest), FALSE);
    
    if (dest->priv->old_card) {
        ECard *card;
        int card_email_num;
        
        card = dest->priv->old_card;
        card_email_num = dest->priv->old_card_email_num;
        
        dest->priv->old_card = NULL;
        g_free (dest->priv->old_textrep);
        dest->priv->old_textrep = NULL;
        
        e_destination_freeze (dest);
        e_destination_clear (dest);
        e_destination_set_card (dest, card, card_email_num);
        e_destination_thaw (dest);
        
        return TRUE;
    }
    
    return FALSE;
}

/*
 * Destination import/export
 */

gchar *
e_destination_get_address_textv (EDestination **destv)
{
    int i, j, len = 0;
    char **strv;
    char *str;
    
    g_return_val_if_fail (destv, NULL);
    
    /* Q: Please tell me this is only for assertion
           reasons. If this is considered to be ok behavior then you
           shouldn't use g_return's. Just a reminder ;-) 
       
       A: Yes, this is just an assertion.  (Though it does find the
       length of the vector in the process...)
    */
    while (destv[len]) {
        g_return_val_if_fail (E_IS_DESTINATION (destv[len]), NULL);
        len++;
    }
    
    strv = g_new0 (char *, len + 1);
    for (i = 0, j = 0; destv[i]; i++) {
        if (!e_destination_is_empty (destv[i])) {
            const char *addr = e_destination_get_address (destv[i]);
            strv[j++] = addr ? (char *) addr : "";
        }
    }
    
    str = g_strjoinv (", ", strv);
    
    g_free (strv);
    
    return str;
}

xmlNodePtr
e_destination_xml_encode (const EDestination *dest)
{
    xmlNodePtr dest_node;
    const char *str;
    
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);
    
    dest_node = xmlNewNode (NULL, "destination");
    
    str = e_destination_get_name (dest);
    if (str)
        xmlNewTextChild (dest_node, NULL, "name", str);
    
    if (!e_destination_is_evolution_list (dest)) {
        str = e_destination_get_email (dest);
        if (str)
            xmlNewTextChild (dest_node, NULL, "email", str);
    } else {
        GList *iter = dest->priv->list_dests;
        
        while (iter) {
            EDestination *list_dest = E_DESTINATION (iter->data);
            xmlNodePtr list_node = xmlNewNode (NULL, "list_entry");
            
            str = e_destination_get_name (list_dest);
            if (str)
                xmlNewTextChild (list_node, NULL, "name", str);
            
            str = e_destination_get_email (list_dest);
            if (str)
                xmlNewTextChild (list_node, NULL, "email", str);
            
            xmlAddChild (dest_node, list_node);
            
            iter = g_list_next (iter);
        }
        
        xmlNewProp (dest_node, "is_list", "yes");
        xmlNewProp (dest_node, "show_addresses", 
                e_destination_list_show_addresses (dest) ? "yes" : "no");
    }
    
    str = e_destination_get_book_uri (dest);
    if (str) {
        xmlNewTextChild (dest_node, NULL, "book_uri", str);
    }
    
    str = e_destination_get_card_uid (dest);
    if (str) {
        char buf[16];
        
        xmlNodePtr uri_node = xmlNewTextChild (dest_node, NULL, "card_uid", str);
        g_snprintf (buf, 16, "%d", e_destination_get_email_num (dest));
        xmlNewProp (uri_node, "email_num", buf);
    }
    
    xmlNewProp (dest_node, "html_mail", e_destination_get_html_mail_pref (dest) ? "yes" : "no");
    
    xmlNewProp (dest_node, "auto_recipient",
            e_destination_is_auto_recipient (dest) ? "yes" : "no");
    
    return dest_node;
}

gboolean
e_destination_xml_decode (EDestination *dest, xmlNodePtr node)
{
    char *name = NULL, *email = NULL, *book_uri = NULL, *card_uid = NULL;
    gboolean is_list = FALSE, show_addr = FALSE, auto_recip = FALSE;
    gboolean html_mail = FALSE;
    GList *list_dests = NULL;
    int email_num = -1;
    char *tmp;
    
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), FALSE);
    g_return_val_if_fail (node != NULL, FALSE);
    
    if (strcmp (node->name, "destination"))
        return FALSE;
    
    tmp = xmlGetProp (node, "html_mail");
    if (tmp) {
        html_mail = !strcmp (tmp, "yes");
        xmlFree (tmp);
    }
    
    tmp = xmlGetProp (node, "is_list");
    if (tmp) {
        is_list = !strcmp (tmp, "yes");
        xmlFree (tmp);
    }
    
    tmp = xmlGetProp (node, "show_addresses");
    if (tmp) {
        show_addr = !strcmp (tmp, "yes");
        xmlFree (tmp);
    }
    
    tmp = xmlGetProp (node, "auto_recipient");
    if (tmp) {
        auto_recip = !strcmp (tmp, "yes");
        xmlFree (tmp);
    }
    
    node = node->xmlChildrenNode;
    while (node) {
        if (!strcmp (node->name, "name")) {
            tmp = xmlNodeGetContent (node);
            g_free (name);
            name = g_strdup (tmp);
            xmlFree (tmp);
        } else if (!is_list && !strcmp (node->name, "email")) {
            tmp = xmlNodeGetContent (node);
            g_free (email);
            email = g_strdup (tmp);
            xmlFree (tmp);
        } else if (is_list && !strcmp (node->name, "list_entry")) {
            xmlNodePtr subnode = node->xmlChildrenNode;
            char *list_name = NULL, *list_email = NULL;
            
            while (subnode) {
                if (!strcmp (subnode->name, "name")) {
                    tmp = xmlNodeGetContent (subnode);
                    g_free (list_name);
                    list_name = g_strdup (tmp);
                    xmlFree (tmp);
                } else if (!strcmp (subnode->name, "email")) {
                    tmp = xmlNodeGetContent (subnode);
                    g_free (list_email);
                    list_email = g_strdup (tmp);
                    xmlFree (tmp);
                }
                
                subnode = subnode->next;
            }
            
            if (list_name || list_email) {
                EDestination *list_dest = e_destination_new ();
                
                if (list_name)
                    e_destination_set_name (list_dest, list_name);
                if (list_email)
                    e_destination_set_email (list_dest, list_email);
                
                g_free (list_name);
                g_free (list_email);
                
                list_dests = g_list_append (list_dests, list_dest);
            }
        } else if (!strcmp (node->name, "book_uri")) {
            tmp = xmlNodeGetContent (node);
            g_free (book_uri);
            book_uri = g_strdup (tmp);
            xmlFree (tmp);
        } else if (!strcmp (node->name, "card_uid")) {
            tmp = xmlNodeGetContent (node);
            g_free (card_uid);
            card_uid = g_strdup (tmp);
            xmlFree (tmp);
            
            tmp = xmlGetProp (node, "email_num");
            email_num = atoi (tmp);
            xmlFree (tmp);
        }
        
        node = node->next;
    }
    
    e_destination_freeze (dest);
    
    e_destination_clear (dest);
    
    if (name) {
        e_destination_set_name (dest, name);
        g_free (name);
    }
    if (email) {
        e_destination_set_email (dest, email);
        g_free (email);
    }
    if (book_uri) {
        e_destination_set_book_uri (dest, book_uri);
        g_free (book_uri);
    }
    if (card_uid) {
        e_destination_set_card_uid (dest, card_uid, email_num);
        g_free (card_uid);
    }
    if (list_dests)
        dest->priv->list_dests = list_dests;
    
    dest->priv->html_mail_override = TRUE;
    dest->priv->wants_html_mail = html_mail;
    
    dest->priv->show_addresses = show_addr;
    
    dest->priv->auto_recipient = auto_recip;
    
    e_destination_thaw (dest);
    
    return TRUE;
}

/* FIXME: Make utf-8 safe */
static gchar *
null_terminate_and_remove_extra_whitespace (xmlChar *xml_in, gint size)
{
    gboolean skip_white = FALSE;
    char *xml, *r, *w;
    
    if (xml_in == NULL || size <= 0) 
        return NULL;
    
    xml = g_strndup (xml_in, size);
    r = w = xml;
    
    while (*r) {
        if (*r == '\n' || *r == '\r') {
            skip_white = TRUE;
        } else {
            gboolean is_space = isspace (*r);
            
            *w = *r;
            
            if (!(skip_white && is_space))
                w++;
            if (!is_space)
                skip_white = FALSE;
        }
        r++;
    }
    
    *w = '\0';
    
    return xml;
}

gchar *
e_destination_export (const EDestination *dest)
{
    xmlNodePtr dest_node;
    xmlDocPtr dest_doc;
    xmlChar *buffer = NULL;
    int size = -1;
    char *str;
    
    g_return_val_if_fail (dest && E_IS_DESTINATION (dest), NULL);
    
    dest_node = e_destination_xml_encode (dest);
    if (dest_node == NULL)
        return NULL;
    
    dest_doc = xmlNewDoc (XML_DEFAULT_VERSION);
    xmlDocSetRootElement (dest_doc, dest_node);
    
    xmlDocDumpMemory (dest_doc, &buffer, &size);
    xmlFreeDoc (dest_doc);
    
    str = null_terminate_and_remove_extra_whitespace (buffer, size);
    xmlFree (buffer);
    
    return str;
}

EDestination *
e_destination_import (const gchar *str)
{
    EDestination *dest = NULL;
    xmlDocPtr dest_doc;
    
    if (!(str && *str))
        return NULL;
    
    dest_doc = xmlParseMemory ((char *) str, strlen (str));
    if (dest_doc && dest_doc->xmlRootNode) {
        dest = e_destination_new ();
        if (! e_destination_xml_decode (dest, dest_doc->xmlRootNode)) {
            g_object_unref (dest);
            dest = NULL;
        }
    }
    xmlFreeDoc (dest_doc);
    
    return dest;
}

gchar *
e_destination_exportv (EDestination **destv)
{
    xmlDocPtr destv_doc;
    xmlNodePtr destv_node;
    xmlChar *buffer = NULL;
    int i, size = -1;
    char *str;
    
    if (destv == NULL || *destv == NULL)
        return NULL;
    
    destv_doc  = xmlNewDoc (XML_DEFAULT_VERSION);
    destv_node = xmlNewNode (NULL, "destinations");
    xmlDocSetRootElement (destv_doc, destv_node);
    
    for (i = 0; destv[i]; i++) {
        if (! e_destination_is_empty (destv[i])) {
            xmlNodePtr dest_node = e_destination_xml_encode (destv[i]);
            if (dest_node)
                xmlAddChild (destv_node, dest_node);
        }
    }
    
    xmlDocDumpMemory (destv_doc, &buffer, &size);
    xmlFreeDoc (destv_doc);
    
    str = null_terminate_and_remove_extra_whitespace (buffer, size);
    xmlFree (buffer);
    
    return str;
}

EDestination **
e_destination_importv (const gchar *str)
{
    GPtrArray *dest_array = NULL;
    xmlDocPtr destv_doc;
    xmlNodePtr node;
    EDestination **destv = NULL;
    
    if (!(str && *str))
        return NULL;
    
    destv_doc = xmlParseMemory ((char *)str, strlen (str));
    if (destv_doc == NULL)
        return NULL;
    
    node = destv_doc->xmlRootNode;
    
    if (strcmp (node->name, "destinations"))
        goto finished;
    
    node = node->xmlChildrenNode;
    
    dest_array = g_ptr_array_new ();
    
    while (node) {
        EDestination *dest;
        
        dest = e_destination_new ();
        if (e_destination_xml_decode (dest, node) && !e_destination_is_empty (dest)) {
            g_ptr_array_add (dest_array, dest);
        } else {
            g_object_unref (dest);
        }
        
        node = node->next;
    }
    
    /* we need destv to be NULL terminated */
    g_ptr_array_add (dest_array, NULL);
    
    destv = (EDestination **) dest_array->pdata;
    g_ptr_array_free (dest_array, FALSE);
    
 finished:
    xmlFreeDoc (destv_doc);
    
    return destv;
}

EDestination **
e_destination_list_to_vector_sized (GList *list, int n)
{
    EDestination **destv;
    int i = 0;
    
    if (n == -1)
        n = g_list_length (list);
    
    if (n == 0)
        return NULL;
    
    destv = g_new (EDestination *, n + 1);
    while (list != NULL && i < n) {
        destv[i] = E_DESTINATION (list->data);
        list->data = NULL;
        i++;
        list = g_list_next (list);
    }
    destv[i] = NULL;
    
    return destv;
}

EDestination **
e_destination_list_to_vector (GList *list)
{
    return e_destination_list_to_vector_sized (list, -1);
}

void
e_destination_freev (EDestination **destv)
{
    int i;
    
    if (destv) {
        for (i = 0; destv[i] != NULL; ++i) {
            g_object_unref (destv[i]);
        }
        g_free (destv);
    }

}

static void
touch_cb (EBook *book, const gchar *addr, ECard *card, gpointer closure)
{
    if (book != NULL && card != NULL) {
        e_card_touch (card);
        d(g_message ("Use score for \"%s\" is now %f", addr, e_card_get_use_score (card)));
        e_book_commit_card (book, card, NULL, NULL);
    }
}

void
e_destination_touch (EDestination *dest)
{
    const char *email;
    
    g_return_if_fail (dest && E_IS_DESTINATION (dest));
    
    if (!e_destination_is_auto_recipient (dest)) {
        email = e_destination_get_email (dest);
        
        if (email)
            e_book_query_address_default (email, touch_cb, NULL);
    }
}

void
e_destination_touchv (EDestination **destv)
{
    int i;
    
    g_return_if_fail (destv != NULL);
    
    for (i = 0; destv[i] != NULL; ++i) {
        e_destination_touch (destv[i]);
    }
}