<?php

declare(strict_types=1);

namespace OCA\WorkflowDeckAutomation\Migration;

use Closure;
use OCA\WorkflowDeckAutomation\Db\Workflow;
use OCP\DB\ISchemaWrapper;
use OCP\DB\Types;
use OCP\Migration\IOutput;
use OCP\Migration\SimpleMigrationStep;

/**
 * Adds the per-workflow choice between Deck's due date and its start date.
 *
 * A separate migration rather than an edit to Version1000...: that one is
 * wrapped in `if (!$schema->hasTable(...))`, so changing it would only ever
 * reach fresh installs.
 *
 * The `default` is what migrates the existing rows — every workflow written
 * before this release was evaluated against the due date, and the column
 * default gives exactly that without a backfill step.
 */
class Version1001Date20260825120000 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('date_field')) {
			return null;
		}

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

		return $schema;
	}
}