initial

wp-content/plugins/gravitysmtp/includes/migration/class-migration.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Gravity_Forms\Gravity_SMTP\Migration;
+
+class Migration {
+
+	private $og_identifier;
+	private $new_identifier;
+
+	public function __construct( $og_identifier, $new_identifier ) {
+		$this->og_identifier  = $og_identifier;
+		$this->new_identifier = $new_identifier;
+	}
+
+	public function migrate() {
+		$original_value = $this->get_original_value();
+		$new_value      = $this->store_new_value( $original_value );
+
+		return $new_value;
+	}
+
+	private function get_original_value() {
+		if ( is_string( $this->og_identifier ) ) {
+			return get_option( $this->og_identifier, null );
+		}
+
+		return call_user_func( $this->og_identifier );
+	}
+
+	private function store_new_value( $original_value ) {
+		if ( is_string( $this->new_identifier ) ) {
+			update_option( $this->new_identifier, $original_value );
+		}
+
+		call_user_func( $this->new_identifier, $original_value );
+	}
+
+}