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/*
 * e-mail-parser-multipart-mixed.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"
#include "e-mail-part-utils.h"

typedef EMailParserExtension EMailParserMultipartMixed;
typedef EMailParserExtensionClass EMailParserMultipartMixedClass;

GType e_mail_parser_multipart_mixed_get_type (void);

G_DEFINE_TYPE (
    EMailParserMultipartMixed,
    e_mail_parser_multipart_mixed,
    E_TYPE_MAIL_PARSER_EXTENSION)

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

static gboolean
empe_mp_mixed_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++) {
        GQueue work_queue = G_QUEUE_INIT;
        EMailPart *mail_part;
        CamelMimePart *subpart;
        CamelContentType *ct;

        subpart = camel_multipart_get_part (mp, i);

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

        e_mail_parser_parse_part (
            parser, subpart, part_id, cancellable, &work_queue);

        mail_part = g_queue_peek_head (&work_queue);

        ct = camel_mime_part_get_content_type (subpart);

        /* Display parts with CID as attachments
         * (unless they already are attachments).
         * Show also hidden attachments with CID,
         * because this is multipart/mixed,
         * not multipart/related. */
        if (mail_part != NULL &&
            e_mail_part_get_cid (mail_part) != NULL &&
            (!e_mail_part_get_is_attachment (mail_part) ||
             mail_part->is_hidden)) {

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

        /* Force messages to be expandable */
        } else if (mail_part == NULL ||
            (camel_content_type_is (ct, "message", "*") &&
             mail_part != NULL &&
             !e_mail_part_get_is_attachment (mail_part))) {

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

            mail_part = g_queue_peek_head (&work_queue);

            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_mixed_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_mixed_parse;
}

static void
e_mail_parser_multipart_mixed_init (EMailParserExtension *extension)
{
}