Added database to keep track of videos already uploaded, so that only new videos send out notifications

db/migrations/20220308141532_add_videos_table.php

@@ -0,0 +1,29 @@
+<?php
+declare(strict_types=1);
+
+use Phinx\Migration\AbstractMigration;
+
+final class AddVideosTable extends AbstractMigration
+{
+    /**
+     * Change Method.
+     *
+     * Write your reversible migrations using this method.
+     *
+     * More information on writing migrations is available here:
+     * https://book.cakephp.org/phinx/0/en/migrations.html#the-change-method
+     *
+     * Remember to call "create()" or "update()" and NOT "save()" when working
+     * with the Table class.
+     */
+    public function change(): void
+    {
+        // create the table
+        $table = $this->table('videos');
+        $table->addColumn('video_id', 'string')
+              ->addColumn('published_at', 'datetime')
+              ->addTimestamps()
+              ->addIndex(['video_id'], ['unique' => true])
+              ->create();
+    }
+}