73 lines
3 KiB
PHP
73 lines
3 KiB
PHP
<?php
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namespace Misuzu\DatabaseMigrations\AddForumPermissions;
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use PDO;
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function migrate_up(PDO $conn): void
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{
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// this permission system is nearly identical to the global site one, aside from it having a forum_id field
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$conn->exec("
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CREATE TABLE `msz_forum_permissions` (
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`user_id` INT(10) UNSIGNED NULL DEFAULT NULL,
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`role_id` INT(10) UNSIGNED NULL DEFAULT NULL,
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`forum_id` INT(10) UNSIGNED NOT NULL,
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`forum_perms_allow` INT(10) UNSIGNED NOT NULL DEFAULT '0',
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`forum_perms_deny` INT(10) UNSIGNED NOT NULL DEFAULT '0',
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UNIQUE INDEX `forum_permissions_user_id_unique` (`user_id`),
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UNIQUE INDEX `forum_permissions_role_id_unique` (`role_id`),
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UNIQUE INDEX `forum_permissions_forum_id_unique` (`forum_id`),
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CONSTRAINT `forum_permissions_user_id_foreign`
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FOREIGN KEY (`user_id`)
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REFERENCES `msz_users` (`user_id`)
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ON UPDATE CASCADE
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ON DELETE CASCADE,
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CONSTRAINT `forum_permissions_role_id_foreign`
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FOREIGN KEY (`role_id`)
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REFERENCES `msz_roles` (`role_id`)
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ON UPDATE CASCADE
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ON DELETE CASCADE,
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CONSTRAINT `forum_permissions_forum_id_foreign`
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FOREIGN KEY (`forum_id`)
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REFERENCES `msz_forum_categories` (`forum_id`)
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ON UPDATE CASCADE
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ON DELETE CASCADE
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)
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");
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$conn->exec('
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CREATE VIEW `msz_forum_permissions_view` AS
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WITH RECURSIVE permissions(user_id, role_id, forum_id, forum_perms_allow, forum_perms_deny) as (
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SELECT
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pp.`user_id`, pp.`role_id`,
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pc.`forum_id`,
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IFNULL(pp.`forum_perms_allow`, 0), IFNULL(pp.`forum_perms_deny`, 0)
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FROM `msz_forum_categories` as pc
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LEFT JOIN `msz_forum_permissions` as pp
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ON pp.`forum_id` = pc.`forum_id`
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GROUP BY `user_id`, `role_id`, `forum_id`
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UNION ALL
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SELECT
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permissions.`user_id`, permissions.`role_id`,
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cc.`forum_id`,
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IFNULL(cp.`forum_perms_allow`, 0) | permissions.`forum_perms_allow`,
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IFNULL(cp.`forum_perms_deny`, 0) | permissions.`forum_perms_deny`
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FROM `msz_forum_categories` as cc
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LEFT JOIN `msz_forum_permissions` as cp
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ON cp.`forum_id` = cc.`forum_id`
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INNER JOIN permissions
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ON cc.`forum_parent` = permissions.`forum_id`
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)
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SELECT
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`user_id`, `role_id`, `forum_id`,
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(BIT_OR(`forum_perms_allow`) &~ BIT_OR(`forum_perms_deny`)) as `forum_perms`
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FROM permissions
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GROUP BY `user_id`, `role_id`, `forum_id`
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');
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}
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function migrate_down(PDO $conn): void
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{
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$conn->exec('DROP VIEW `msz_forum_permissions_view`');
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$conn->exec('DROP TABLE `msz_forum_permissions`');
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}
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