<?php

declare(strict_types=1);

namespace OCA\WorkflowDeckAutomation\Migration;

use Closure;
use OCP\DB\ISchemaWrapper;
use OCP\DB\Types;
use OCP\Migration\IOutput;
use OCP\Migration\SimpleMigrationStep;

/**
 * Adds `notify_channel` (mail / notification / both, see
 * NotificationPolicy::CHANNELS): how the recipients chosen by `notify_mode`
 * hear about moved cards. Existing workflows get `mail`, the only channel
 * there was, so nothing changes for them.
 */
class Version1004Date20261002120000 extends SimpleMigrationStep {
	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
		/** @var ISchemaWrapper $schema */
		$schema = $schemaClosure();

		if (!$schema->hasTable('wfda_workflows')) {
			return null;
		}

		$table = $schema->getTable('wfda_workflows');
		if ($table->hasColumn('notify_channel')) {
			return null;
		}

		$table->addColumn('notify_channel', Types::STRING, [
			'notnull' => true,
			'length' => 16,
			'default' => 'mail',
		]);

		return $schema;
	}
}