Add migration to create KeyValueStorage table

Author: hgraca

build/Migration/Version/Version20180118095302.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the Explicit Architecture POC,
+ * which is created on top of the Symfony Demo application.
+ *
+ * (c) Herberto Graça <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Acme\App\Build\Migration\Version;
+
+use Acme\App\Build\Migration\ConfigurationAwareMigration;
+use Acme\App\Build\Migration\MigrationHelperTrait;
+use Doctrine\DBAL\Schema\Schema;
+
+final class Version20180118095302 extends ConfigurationAwareMigration
+{
+    use MigrationHelperTrait;
+
+    /**
+     * @throws \Doctrine\DBAL\DBALException
+     * @throws \Doctrine\DBAL\Migrations\AbortMigrationException
+     */
+    public function up(Schema $schema): void
+    {
+        $engine = $this->connection->getDatabasePlatform()->getName();
+        switch ($engine) {
+            case 'mysql':
+                $this->addSql(
+                    'CREATE TABLE KeyValueStorage (`key` VARCHAR(255) PRIMARY KEY, `value` VARCHAR(255) DEFAULT NULL) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci ENGINE = InnoDB'
+                );
+                break;
+            case 'sqlite':
+                $this->addSql('CREATE TABLE KeyValueStorage (`key` TEXT PRIMARY KEY, `value` TEXT DEFAULT NULL)');
+                break;
+            default:
+                $this->abortIf(true, "Unknown engine type '$engine'.");
+        }
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('DROP TABLE KeyValueStorage');
+    }
+}