-- These are caching tables that do not hold permanent data.  This change does
-- the same thing that the SQLite upgrade code does—drop the table first, and
-- then recreate it.

DROP TABLE IF EXISTS `cache`;
DROP TABLE IF EXISTS `cache_shared`;
DROP TABLE IF EXISTS `cache_index`;
DROP TABLE IF EXISTS `cache_thread`;
DROP TABLE IF EXISTS `cache_messages`;

-- These following definitions are required for successful transfers.  They are
-- the table entries for 0.9.5, which will be converted to 1.0.0 below.

CREATE TABLE IF NOT EXISTS `cache` (
 `user_id` int(10) UNSIGNED NOT NULL,
 `cache_key` varchar(128) /*!40101 CHARACTER SET ascii COLLATE ascii_general_ci */ NOT NULL ,
 `created` datetime NOT NULL DEFAULT '1000-01-01 00:00:00',
 `data` longtext NOT NULL,
 CONSTRAINT `user_id_fk_cache` FOREIGN KEY (`user_id`)
   REFERENCES `users`(`user_id`) ON DELETE CASCADE ON UPDATE CASCADE,
 INDEX `created_index` (`created`),
 INDEX `user_cache_index` (`user_id`,`cache_key`)
) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;

CREATE TABLE IF NOT EXISTS `cache_index` (
 `user_id` int(10) UNSIGNED NOT NULL,
 `mailbox` varchar(255) BINARY NOT NULL,
 `changed` datetime NOT NULL DEFAULT '1000-01-01 00:00:00',
 `valid` tinyint(1) NOT NULL DEFAULT '0',
 `data` longtext NOT NULL,
 CONSTRAINT `user_id_fk_cache_index` FOREIGN KEY (`user_id`)
   REFERENCES `users`(`user_id`) ON DELETE CASCADE ON UPDATE CASCADE,
 INDEX `changed_index` (`changed`),
 PRIMARY KEY (`user_id`, `mailbox`)
) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;

CREATE TABLE IF NOT EXISTS `cache_thread` (
 `user_id` int(10) UNSIGNED NOT NULL,
 `mailbox` varchar(255) BINARY NOT NULL,
 `changed` datetime NOT NULL DEFAULT '1000-01-01 00:00:00',
 `data` longtext NOT NULL,
 CONSTRAINT `user_id_fk_cache_thread` FOREIGN KEY (`user_id`)
   REFERENCES `users`(`user_id`) ON DELETE CASCADE ON UPDATE CASCADE,
 INDEX `changed_index` (`changed`),
 PRIMARY KEY (`user_id`, `mailbox`)
) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;

CREATE TABLE IF NOT EXISTS `cache_messages` (
 `user_id` int(10) UNSIGNED NOT NULL,
 `mailbox` varchar(255) BINARY NOT NULL,
 `uid` int(11) UNSIGNED NOT NULL DEFAULT '0',
 `changed` datetime NOT NULL DEFAULT '1000-01-01 00:00:00',
 `data` longtext NOT NULL,
 `flags` int(11) NOT NULL DEFAULT '0',
 CONSTRAINT `user_id_fk_cache_messages` FOREIGN KEY (`user_id`)
   REFERENCES `users`(`user_id`) ON DELETE CASCADE ON UPDATE CASCADE,
 INDEX `changed_index` (`changed`),
 PRIMARY KEY (`user_id`, `mailbox`, `uid`)
) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;

-- Starting here is what's actually needed to upgrade from 0.9.5 to 1.0.0.

CREATE TABLE `cache_shared` (
 `cache_key` varchar(255) /*!40101 CHARACTER SET ascii COLLATE ascii_general_ci */ NOT NULL,
 `created` datetime NOT NULL DEFAULT '1000-01-01 00:00:00',
 `data` longtext NOT NULL,
 INDEX `created_index` (`created`),
 INDEX `cache_key_index` (`cache_key`)
) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;

ALTER TABLE `cache` ADD `expires` datetime DEFAULT NULL;
ALTER TABLE `cache_shared` ADD `expires` datetime DEFAULT NULL;
ALTER TABLE `cache_index` ADD `expires` datetime DEFAULT NULL;
ALTER TABLE `cache_thread` ADD `expires` datetime DEFAULT NULL;
ALTER TABLE `cache_messages` ADD `expires` datetime DEFAULT NULL;

-- initialize expires column with created/changed date + 7days
UPDATE `cache` SET `expires` = `created` + interval 604800 second;
UPDATE `cache_shared` SET `expires` = `created` + interval 604800 second;
UPDATE `cache_index` SET `expires` = `changed` + interval 604800 second;
UPDATE `cache_thread` SET `expires` = `changed` + interval 604800 second;
UPDATE `cache_messages` SET `expires` = `changed` + interval 604800 second;

ALTER TABLE `cache` DROP INDEX `created_index`;
ALTER TABLE `cache_shared` DROP INDEX `created_index`;
ALTER TABLE `cache_index` DROP `changed`;
ALTER TABLE `cache_thread` DROP `changed`;
ALTER TABLE `cache_messages` DROP `changed`;

ALTER TABLE `cache` ADD INDEX `expires_index` (`expires`);
ALTER TABLE `cache_shared` ADD INDEX `expires_index` (`expires`);
ALTER TABLE `cache_index` ADD INDEX `expires_index` (`expires`);
ALTER TABLE `cache_thread` ADD INDEX `expires_index` (`expires`);
ALTER TABLE `cache_messages` ADD INDEX `expires_index` (`expires`);
