GlobFinder.php

<?php
declare(strict_types=1);

namespace WPDesk\Migrations\Finder;

use WPDesk\Migrations\AbstractMigration;

final class GlobFinder implements MigrationFinder {

	public function find_migrations( string $directory ): array {
		$dir = realpath( $directory );

		if ( $dir === false ) {
			return [];
		}

		$files = glob( rtrim( $dir, '/' ) . '/Version*.php' );
		if ( $files === false ) {
			$files = [];
		}

		return $this->load_migrations( $files );
	}

	/**
	 * @param string[] $files
	 *
	 * @return class-string<AbstractMigration>[]
	 * @throws \ReflectionException
	 */
	private function load_migrations( array $files ): array {
		$included_files = [];
		foreach ( $files as $file ) {
			require_once $file;
			$real_file = realpath( $file );
			if ( $real_file === false ) {
				continue;
			}
			$included_files[] = $real_file;
		}

		$classes  = $this->load_migration_classes( $included_files );
		$versions = [];
		foreach ( $classes as $class ) {
			$versions[] = $class->getName();
		}

		return $versions;
	}

	/**
	 * @param string[] $included_files
	 * @return \ReflectionClass<AbstractMigration>[]
	 * @throws \ReflectionException
	 */
	private function load_migration_classes( array $included_files ): array {
		$classes = [];
		foreach ( get_declared_classes() as $class ) {
			$r = new \ReflectionClass( $class );

			if ( ! $r->isSubclassOf( AbstractMigration::class ) ) {
				continue;
			}

			if ( in_array( $r->getFileName(), $included_files, true ) ) {
				$classes[] = $r;
			}
		}

		return $classes;