Added new crawlable flag to Short URLs

data/migrations/Version20210522051601.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ShlinkMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\DBAL\Types\Types;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20210522051601 extends AbstractMigration
+{
+    public function up(Schema $schema): void
+    {
+        $shortUrls = $schema->getTable('short_urls');
+        $this->skipIf($shortUrls->hasColumn('crawlable'));
+        $shortUrls->addColumn('crawlable', Types::BOOLEAN, ['default' => false]);
+    }
+
+    public function down(Schema $schema): void
+    {
+        $shortUrls = $schema->getTable('short_urls');
+        $this->skipIf(! $shortUrls->hasColumn('crawlable'));
+        $shortUrls->dropColumn('crawlable');
+    }
+}