Add restriction migration

This adds migration for applied locations and items meta (but its untested)

src/Migration/Migration.php

@@ -11,6 +11,7 @@
 use CommonsBooking\Wordpress\CustomPostType\Item;
 use CommonsBooking\Wordpress\CustomPostType\Location;
 use CommonsBooking\Wordpress\CustomPostType\Timeframe;
+use CommonsBooking\Wordpress\CustomPostType\CustomPostType;
 use Exception;
 use WP_Post;
 use WP_Query;
@@ -61,6 +62,11 @@ public static function migrateAll() {
 					'complete' => 0,
 					'failed'   => 0,
 				],
+				'restrictions' => [
+					'index'    => 0,
+					'complete' => 0,
+					'failed'   => 0,
+				],
 				'bookingCodes' => [
 					'index'    => 0,
 					'complete' => 0,
@@ -106,6 +112,10 @@ public static function migrateAll() {
 				'repoFunction'      => 'getBookings',
 				'migrationFunction' => 'migrateBooking',
 			],
+			'restrictions' => [
+				'repoFunction'		=> 'getRestrictions',
+				'migrationFunction'	=> 'migrateRestriction',
+			],
 			'bookingCodes' => [
 				'repoFunction'      => 'getBookingCodes',
 				'migrationFunction' => 'migrateBookingCode',
@@ -567,6 +577,29 @@ public static function migrateBooking( $booking ): bool {
 		return self::savePostData( $existingPost, $postData, $postMeta );
 	}
 
+	public static function migrateRestriction( $restriction ): bool {
+
+		// Nothing to change for migration
+		$postData = array();
+		// Nothing to change for migration
+		$postMeta = array();
+
+		$existingPost = self::getExistingPost( $restriction['id'], \CommonsBooking\Wordpress\CustomPostType\Restriction::$postType );
+
+		// Conditionally migrate
+		$restrictionItems     = get_post_meta( $existingPost->ID, \CommonsBooking\Model\Restriction::META_ITEM_ID );
+		if ( empty( $restrictionItems) ) {
+			$postMeta[ \CommonsBooking\Model\Restriction::META_ITEM_ID ] = CustomPostType::SELECTION_ALL_POSTS;
+		}
+
+		$restrictionLocations = get_post_meta( $existingPost->ID, \CommonsBooking\Model\Restriction::META_LOCATION_ID );
+		if ( empty( $restrictionLocations) ) {
+			$postMeta[ \CommonsBooking\Model\Restriction::META_LOCATION_ID ] = CustomPostType::SELECTION_ALL_POSTS;
+		}
+
+		return self::savePostData( $existingPost, $postData, $postMeta );
+	}
+
 	/**
 	 * Migrates CB1 Booking Code to CB2.
 	 *