/*
 * page-download.c -- page /download/<id>
 *
 * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <assert.h>

#include "database.h"
#include "page-status.h"
#include "page.h"
#include "paste.h"

static void
get(struct kreq *req)
{
	struct paste paste;

	if (database_get(&paste, req->path) < 0)
		page_status(req, KHTTP_404);
	else {
		khttp_head(req, kresps[KRESP_CONTENT_TYPE], "%s", kmimetypes[KMIME_APP_OCTET_STREAM]);
#if 0
		/* TODO: this seems to generated truncated files. */
		khttp_head(req, kresps[KRESP_CONTENT_LENGTH], "%zu", strlen(paste.code));
#endif
		khttp_head(req, kresps[KRESP_CONNECTION], "keep-alive");
		khttp_head(req, kresps[KRESP_CONTENT_DISPOSITION], "attachment; filename=\"%s.%s\"",
			paste.id, paste.language
		);
		khttp_body(req);
		khttp_puts(req, paste.code);
		khttp_free(req);
		paste_finish(&paste);
	}
}

void
page_download(struct kreq *req)
{
	assert(req);

	switch (req->method) {
	case KMETHOD_GET:
		get(req);
		break;
	default:
		page_status(req, KHTTP_400);
		break;
	}
}