<?php
namespace Fisharebest\Webtrees;

/**
 * webtrees: online genealogy
 * Copyright (C) 2015 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 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 General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

use PDOException;

// Update the database schema from version 2 to version 3
// - create the wt_gedcom_chunk table to import gedcoms in
// blocks of data smaller than the max_allowed_packet restriction.

Database::exec(
	"CREATE TABLE IF NOT EXISTS `##gedcom_chunk` (" .
	" gedcom_chunk_id INTEGER AUTO_INCREMENT NOT NULL," .
	" gedcom_id       INTEGER                NOT NULL," .
	" chunk_data      MEDIUMBLOB             NOT NULL," .
	" imported        BOOLEAN                NOT NULL DEFAULT FALSE," .
	" PRIMARY KEY     (gedcom_chunk_id)," .
	"         KEY ix1 (gedcom_id, imported)," .
	" FOREIGN KEY fk1 (gedcom_id) REFERENCES `##gedcom` (gedcom_id)" .
	") COLLATE utf8_unicode_ci ENGINE=InnoDB"
);

try {
	Database::exec(
		"ALTER TABLE `##gedcom` DROP import_gedcom, DROP import_offset"
	);
} catch (PDOException $ex) {
	// Perhaps we have already deleted these columns?
}

// Update the version to indicate success
Site::setPreference($schema_name, $next_version);
