/*
 * 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; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the 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 &&
		    (!mail_part->is_attachment ||
		     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", "rfc822") &&
		     mail_part != NULL &&
		     !mail_part->is_attachment)) {

			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)
{
}