bug fixes and new interface for cart data

make cart data an interface that is used on the base class.  make interface the type that is specified on func calls.

remove unused reflection
bug fixes

README.md

@@ -50,10 +50,14 @@ After creating your implementation of this interface, you must supply it to your
 ```php
 interface cartStorageInterface
 {
-	public function init( cart $cart ) : cartStorageInterface;
-	public function saveCartItem( cartItem $item ) : cartStorageInterface;
-	public function saveCartData( cartData $data ) : cartStorageInterface;
 	public function loadCart( cart $cart ) : cartStorageInterface;
+	public function emptyCart( cart $cart ) : cartStorageInterface;
+
+	public function saveItems( array $items ) : cartStorageInterface;
+	public function saveData( array $data ) : cartStorageInterface;
+
+	// used to clean up after all storage is complete
+	public function finalize( cart $cart ) : cartStorageInterface;
 }
 ```
 

src/cart.php

@@ -218,10 +218,10 @@ public function save()
 		$this->storageHandler->saveItems( $this->items );
 		$this->storageHandler->saveData( $this->data );
 
-		$this->storageHandler->finalize();
+		$this->storageHandler->finalize( $this );
 	}
 	//------------------------------------------------------------------------
-	public function addData( cartData $data ) : self
+	public function addData( iCartData $data ) : self
 	{
 		$this->data[$data->getType()]  = $data;	
 

src/cartData.php

@@ -1,7 +1,7 @@
 <?php namespace treehousetim\shopCart;
-use \stdClass, \Exception, \ReflectionClass;
+use \stdClass, \Exception;
 
-abstract class cartData implements jsonSerializable
+abstract class cartData implements jsonSerializable, iCartData
 {
 	protected $data;
 	protected $type;

src/cartStorageSession.php

@@ -26,7 +26,7 @@ public function saveItems( array $items )
 
 		$_SESSION['cart_items'] = [];
 
-		foreach( $this->items as $item )
+		foreach( $items as $item )
 		{
 			$_SESSION['cart_items'][] = ['id' => $item->getProduct()->getId(), 'qty' => $item->getQty()];
 		}
@@ -51,6 +51,8 @@ public function saveData( array $data )
 	public function finalize( cart $cart ) : cartStorageInterface
 	{
 		// do nothing
+
+		return $this;
 	}
 	//------------------------------------------------------------------------
 	public function loadCart( cart $cart ) : cartStorageInterface

src/iCartData.php

@@ -0,0 +1,11 @@
+<?php namespace treehousetim\shopCart;
+
+interface iCartData
+{
+	public function jsonSerialize();
+	public function getForStorage();
+	public function setData( $data ) : iCartData;
+	public function getData();
+	public function setType( string $type ) : iCartData;
+	public function getType();
+}