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/*
 * e-mail-parser-multipart-digest.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 <e-util/e-util.h>

#include "e-mail-parser-extension.h"

typedef EMailParserExtension EMailParserMultipartDigest;
typedef EMailParserExtensionClass EMailParserMultipartDigestClass;

GType e_mail_parser_multipart_digest_get_type (void);

G_DEFINE_TYPE (
    EMailParserMultipartDigest,
    e_mail_parser_multipart_digest,
    E_TYPE_MAIL_PARSER_EXTENSION)

static const gchar *parser_mime_types[] = {
    "multipart/digest",
    NULL
};

static gboolean
empe_mp_digest_parse (EMailParserExtension *extension,
                      EMailParser *parser,
                      CamelMimePart *part,
                      GString *part_id,
                      GCancellable *cancellable,
                      GQueue *out_mail_parts)
{
    CamelMultipart *mp;
    gint i, nparts, len;

    mp = (CamelMultipart *) camel_medium_get_content ((CamelMedium *) part);

    if (!CAMEL_IS_MULTIPART (mp))
        return e_mail_parser_parse_part_as (
            parser, part, part_id,
            "application/vnd.evolution.source",
            cancellable, out_mail_parts);

    len = part_id->len;
    nparts = camel_multipart_get_number (mp);
    for (i = 0; i < nparts; i++) {
        CamelMimePart *subpart;
        CamelContentType *ct;
        gchar *cts;

        subpart = camel_multipart_get_part (mp, i);

        if (!subpart)
            continue;

        g_string_append_printf (part_id, ".digest.%d", i);

        ct = camel_mime_part_get_content_type (subpart);

        /* According to RFC this shouldn't happen, but who knows... */
        if (ct && !camel_content_type_is (ct, "message", "rfc822")) {
            cts = camel_content_type_simple (ct);

            e_mail_parser_parse_part_as (
                parser, subpart, part_id, cts,
                cancellable, out_mail_parts);

            g_free (cts);
        } else {
            GQueue work_queue = G_QUEUE_INIT;
            EMailPart *mail_part;
            gboolean wrap_as_attachment;

            e_mail_parser_parse_part_as (
                parser, subpart, part_id, "message/rfc822",
                cancellable, &work_queue);

            mail_part = g_queue_peek_head (&work_queue);

            wrap_as_attachment =
                (mail_part != NULL) &&
                !e_mail_part_get_is_attachment (mail_part);

            /* Force the message to be collapsable */
            if (wrap_as_attachment)
                e_mail_parser_wrap_as_attachment (
                    parser, subpart, part_id, &work_queue);

            mail_part = g_queue_peek_head (&work_queue);

            /* Force the message to be expanded */
            if (mail_part != NULL)
                mail_part->force_inline = TRUE;

            e_queue_transfer (&work_queue, out_mail_parts);
        }

        g_string_truncate (part_id, len);
    }

    return TRUE;
}

static void
e_mail_parser_multipart_digest_class_init (EMailParserExtensionClass *class)
{
    class->mime_types = parser_mime_types;
    class->priority = G_PRIORITY_LOW;
    class->flags = E_MAIL_PARSER_EXTENSION_COMPOUND_TYPE;
    class->parse = empe_mp_digest_parse;
}

static void
e_mail_parser_multipart_digest_init (EMailParserExtension *extension)
{
}