Rewrote session code to be OOP.

database/2020_05_25_152331_sessions_table_fixes.php

@@ -0,0 +1,22 @@
+<?php
+namespace Misuzu\DatabaseMigrations\SessionsTableFixes;
+
+use PDO;
+
+function migrate_up(PDO $conn): void {
+    $conn->exec("
+        ALTER TABLE `msz_sessions`
+            CHANGE COLUMN `session_key` `session_key` BINARY(64) NOT NULL AFTER `user_id`,
+            CHANGE COLUMN `session_expires` `session_expires` TIMESTAMP NOT NULL DEFAULT DATE_ADD(NOW(), INTERVAL 1 MONTH) AFTER `session_country`,
+            ADD INDEX `sessions_created_index` (`session_created`);
+    ");
+}
+
+function migrate_down(PDO $conn): void {
+    $conn->exec("
+        ALTER TABLE `msz_sessions`
+            CHANGE COLUMN `session_key` `session_key` VARCHAR(255) NOT NULL COLLATE 'utf8mb4_bin' AFTER `user_id`,
+            CHANGE COLUMN `session_expires` `session_expires` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP() ON UPDATE CURRENT_TIMESTAMP() AFTER `session_country`,
+            DROP INDEX `sessions_created_index`;
+    ");
+}