Added get single draft, remove draft and destroy cart (remove all content)

app/Cart/CartCollection.php

@@ -43,6 +43,22 @@ class CartCollection
         return $draft;
     }
 
+    public function get($draftKey)
+    {
+        $content = $this->getContent();
+        if (isset($content[$draftKey]))
+            return $content[$draftKey];
+
+        return null;
+    }
+
+    public function removeDraft($draftKey)
+    {
+        $content = $this->getContent();
+        $content->pull($draftKey);
+        $this->session->put($this->instance, $content);
+    }
+
     public function content()
     {
         if (is_null($this->session->get($this->instance))) {
@@ -59,6 +75,53 @@ class CartCollection
         return $content;
     }
 
+    public function keys()
+    {
+        return $this->getContent()->keys();
+    }
+
+    public function destroy()
+    {
+        $this->session->remove($this->instance);
+    }
+
+    public function addItemToCart($draftKey, $item)
+    {
+        $content = $this->getContent();
+        $content[$draftKey]->addItem($item);
+        $content[$draftKey] = $this->updateCart($content[$draftKey]);
+
+        $this->session->put($this->instance, $content);
+    }
+
+    public function updateCart(Cart $draft)
+    {
+        $draft->charged_weight = $draft->getChargedWeight();
+        $draft->items_count = $draft->itemsCount();
+        $draft->pcs_count = $draft->itemsCount();
+        $draft->base_charge = $draft->getCharge();
+        $draft->subtotal = $draft->getCharge();
+        $draft->total = $draft->getCharge();
+        return $draft;
+    }
+
+    public function updateCartItem($draftKey, $itemKey, $newItemData)
+    {
+        $content = $this->getContent();
+        $content[$draftKey]->updateItem($itemKey, $newItemData);
+        $content[$draftKey] = $this->updateCart($content[$draftKey]);
+
+        $this->session->put($this->instance, $content);
+    }
+
+    public function removeItemFromCart($draftKey, $itemKey)
+    {
+        $content = $this->getContent();
+        $content[$draftKey]->removeItem($itemKey);
+
+        $this->session->put($this->instance, $content);
+    }
+
     public function count()
     {
         return $this->getContent()->count();

tests/Unit/CartCollectionTest.php

@@ -35,7 +35,7 @@ class CartCollectionTest extends TestCase
     }
 
     /** @test */
-    public function cart_collection_consist_of_transacion_draft_class()
+    public function cart_collection_consist_of_transacion_draft()
     {
         $cart = new CartCollection;
         $cashDraft = new CashDraft;
@@ -47,4 +47,54 @@ class CartCollectionTest extends TestCase
         $this->assertCount(2, $cart->content());
         $this->assertTrue($cart->hasContent());
     }
+
+    /** @test */
+    public function it_can_get_a_draft_by_key()
+    {
+        $draft = new CashDraft;
+        $cart = new CartCollection;
+
+        $cart->add($draft);
+        $gottenDraft = $cart->get($draft->draftKey);
+        $invalidDraft = $cart->get('random_key');
+
+        $this->assertEquals($draft, $gottenDraft);
+        $this->assertNull($invalidDraft);
+    }
+
+    /** @test */
+    public function it_can_remove_draft_from_draft_collection()
+    {
+        $cart = new CartCollection;
+        $cashDraft = new CashDraft;
+        $creditDraft = new CreditDraft;
+
+        $cart->add($cashDraft);
+        $cart->add($creditDraft);
+
+        $this->assertCount(2, $cart->content());
+        $cart->removeDraft($cart->content()->keys()->last());
+        $this->assertCount(1, $cart->content());
+    }
+
+    /** @test */
+    public function it_can_be_empty_out()
+    {
+        $cart = new CartCollection;
+
+        $cashDraft = new CashDraft;
+        $creditDraft = new CreditDraft;
+
+        $cart->add($cashDraft);
+        $cart->add($cashDraft);
+        $cart->add($cashDraft);
+        $cart->add($creditDraft);
+        $cart->add($creditDraft);
+
+        $this->assertCount(5, $cart->content());
+        $cart->destroy();
+
+        $this->assertCount(0, $cart->content());
+        $this->assertTrue($cart->isEmpty());
+    }
 }