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/*
 * e-mail-parser-vcard.c
 *
 * This program 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.
 *
 * 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 Lesser General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>
#include <gtk/gtk.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>

#include "e-mail-parser-vcard.h"
#include "e-mail-part-vcard.h"

#include <camel/camel.h>

#include <em-format/e-mail-extension-registry.h>
#include <em-format/e-mail-parser-extension.h>
#include <em-format/e-mail-part.h>

#include <libebook/libebook.h>
#include <libedataserver/libedataserver.h>

#include <addressbook/util/eab-book-util.h>

#include <libebackend/libebackend.h>

#define d(x)

typedef EMailParserExtension EMailParserVCard;
typedef EMailParserExtensionClass EMailParserVCardClass;

typedef EExtension EMailParserVCardLoader;
typedef EExtensionClass EMailParserVCardLoaderClass;

GType e_mail_parser_vcard_get_type (void);

G_DEFINE_DYNAMIC_TYPE (
    EMailParserVCard,
    e_mail_parser_vcard,
    E_TYPE_MAIL_PARSER_EXTENSION)

static const gchar *parser_mime_types[] = {
    "text/vcard",
    "text/x-vcard",
    "text/directory",
    NULL
};

static void
decode_vcard (EMailPartVCard *vcard_part,
              CamelMimePart *mime_part)
{
    CamelDataWrapper *data_wrapper;
    CamelMedium *medium;
    CamelStream *stream;
    GSList *contact_list;
    GByteArray *array;
    const gchar *string;
    const guint8 padding[2] = {0};

    array = g_byte_array_new ();
    medium = CAMEL_MEDIUM (mime_part);

    /* Stream takes ownership of the byte array. */
    stream = camel_stream_mem_new_with_byte_array (array);
    data_wrapper = camel_medium_get_content (medium);
    camel_data_wrapper_decode_to_stream_sync (
        data_wrapper, stream, NULL, NULL);

    /* because the result is not NULL-terminated */
    g_byte_array_append (array, padding, 2);

    string = (gchar *) array->data;
    contact_list = eab_contact_list_from_string (string);
    vcard_part->contact_list = contact_list;

    g_object_unref (mime_part);
    g_object_unref (stream);
}

static gboolean
empe_vcard_parse (EMailParserExtension *extension,
                         EMailParser *parser,
                         CamelMimePart *part,
                         GString *part_id,
                         GCancellable *cancellable,
                         GQueue *out_mail_parts)
{
    EMailPartVCard *vcard_part;
    GQueue work_queue = G_QUEUE_INIT;
    gint len;

    len = part_id->len;
    g_string_append (part_id, ".org-gnome-vcard-display");

    vcard_part = e_mail_part_vcard_new (part, part_id->str);

    vcard_part->formatter = g_object_new (
        EAB_TYPE_CONTACT_FORMATTER,
        "display-mode", EAB_CONTACT_DISPLAY_RENDER_COMPACT,
        "render-maps", FALSE, NULL);
    g_object_ref (part);

    decode_vcard (vcard_part, part);

    g_string_truncate (part_id, len);

    g_queue_push_tail (&work_queue, vcard_part);

    e_mail_parser_wrap_as_attachment (
        parser, part, part_id, &work_queue);

    e_queue_transfer (&work_queue, out_mail_parts);

    return TRUE;
}

static void
e_mail_parser_vcard_class_init (EMailParserExtensionClass *class)
{
    class->mime_types = parser_mime_types;
    class->flags = E_MAIL_PARSER_EXTENSION_INLINE_DISPOSITION;
    class->parse = empe_vcard_parse;
}

static void
e_mail_parser_vcard_class_finalize (EMailParserExtensionClass *class)
{
}

static void
e_mail_parser_vcard_init (EMailParserExtension *extension)
{
}

void
e_mail_parser_vcard_type_register (GTypeModule *type_module)
{
    e_mail_parser_vcard_register_type (type_module);
}