Merge branch 'mrrobot47-update/base-migration' into develop-v4

Author: mbtamuli

php/EE/Migration/Base.php

@@ -2,10 +2,26 @@
 
 namespace EE\Migration;
 
+use Symfony\Component\Filesystem\Filesystem;
+
 abstract class Base {
 
-    public $status = 'incomplete';
+	public $status = 'incomplete';
+	protected $is_first_execution;
+	protected $skip_this_migration;
+	protected $backup_dir;
+	protected $backup_file;
+	protected $fs;
+
+	public function __construct() {
+		$this->fs                  = new Filesystem();
+		$this->skip_this_migration = false;
+		$this->is_first_execution  = ! \EE\Model\Option::get( 'version' );
+		$this->backup_dir          = EE_BACKUP_DIR;
+		$this->fs->mkdir( $this->backup_dir );
+	}
+
+	abstract public function up();
 
-    abstract public function up();
-    abstract public function down();
-}
+	abstract public function down();
+}