Allowing user to add product item to a transaction draft

Added draftHasItem method on CartCollection
Added search method to transaction draft class

app/Cart/CartCollection.php

@@ -2,6 +2,7 @@
 
 namespace App\Cart;
 
+use App\Product;
 use Illuminate\Support\Collection;
 
 /**
@@ -80,11 +81,7 @@ class CartCollection
 
     public function content()
     {
-        if (is_null($this->session->get($this->instance))) {
-            return collect([]);
-        }
-
-        return $this->session->get($this->instance);
+        return $this->getContent();
     }
 
     protected function getContent()
@@ -114,6 +111,13 @@ class CartCollection
         return $item->product;
     }
 
+    public function draftHasItem(TransactionDraft $draft, Product $product)
+    {
+        $item = $draft->search($product);
+
+        return ! is_null($item);
+    }
+
     public function updateDraftItem($draftKey, $itemKey, $newItemData)
     {
         $content = $this->getContent();

app/Cart/TransactionDraft.php

@@ -2,6 +2,8 @@
 
 namespace App\Cart;
 
+use App\Product;
+
 /**
  * Transaction Draft Interface.
  */
@@ -73,4 +75,10 @@ abstract class TransactionDraft
 
         return $item;
     }
+
+    public function search(Product $product)
+    {
+        $productItem = $this->items()->where('id', $product->id)->first();
+        return $productItem;
+    }
 }

app/Http/Controllers/CartController.php

@@ -52,7 +52,7 @@ class CartController extends Controller
         $item = new Item($product, $request->qty);
         $this->cart->addItemToDraft($draftKey, $item);
 
-        return redirect()->route('cart.index', $item->draftKey);
+        return back();
     }
 
     public function updateDraftItem(Request $request, $draftKey)

resources/views/cart/index.blade.php

@@ -34,6 +34,12 @@
         @foreach($queriedProducts as $product)
         <li>{{ $product->name }}</li>
         <li>{{ $draft->type == 'cash' ? $product->cash_price : $product->credit_price }}</li>
+        <li>
+            <form action="{{ route('cart.add-draft-item', [$draft->draftKey, $product->id]) }}" method="post">
+                <input type="number" id="qty-{{ $product->id }}" name="qty" value="1">
+                <input type="submit" id="add-product-{{ $product->id }}">
+            </form>
+        </li>
         @endforeach
     </ul>
     @endif

tests/Feature/TransactionEntryTest.php

@@ -67,6 +67,29 @@ class TransactionEntryTest extends BrowserKitTestCase
         // See product list appears
         $this->see($product->name);
         $this->see($product->credit_price);
+        $this->seeElement('form', ['action' => route('cart.add-draft-item', [$draft->draftKey, $product->id])]);
+        $this->seeElement('input', ['id' => 'qty-' . $product->id, 'name' => 'qty']);
+        $this->seeElement('input', ['id' => 'add-product-' . $product->id]);
         $this->dontSee($product->cash_price);
     }
+
+    /** @test */
+    public function user_can_add_item_to_draft()
+    {
+        $product = factory(Product::class)->create(['name' => 'Testing Produk 1','cash_price' => 400,'credit_price' => 500]);
+        $this->loginAsUser();
+
+        $cart = new CartCollection();
+        $draft = new CashDraft();
+        $cart->add($draft);
+
+        // Visit cart index with searched item
+        $this->visit(route('cart.show', [$draft->draftKey, 'query' => 'testing']));
+
+        $this->type(2, 'qty');
+        $this->press('add-product-' . $product->id);
+        $this->seePageIs(route('cart.show', [$draft->draftKey, 'query' => 'testing']));
+        $this->assertTrue($cart->draftHasItem($draft, $product));
+        $this->assertEquals(800, $draft->getTotal());
+    }
 }

tests/Unit/Integration/TransactionDraftTest.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Tests\Unit\Integration;
+
+use App\Cart\CartCollection;
+use App\Cart\CashDraft;
+use App\Cart\Item;
+use App\Product;
+use Illuminate\Foundation\Testing\DatabaseMigrations;
+use Tests\TestCase;
+
+class TransactionDraftTest extends TestCase
+{
+    use DatabaseMigrations;
+
+    /** @test */
+    public function it_can_found_an_item_in_a_draft()
+    {
+        $cart = new CartCollection();
+
+        $draft = $cart->add(new CashDraft());
+        $count = 2;
+        $product1 = factory(Product::class)->create(['cash_price' => 1000]);
+        $product2 = factory(Product::class)->create(['cash_price' => 2000]);
+        $item1 = new Item($product1, $count);
+        $item2 = new Item($product2, $count);
+
+        // Add items to draft
+        $cart->addItemToDraft($draft->draftKey, $item1);
+        $cart->addItemToDraft($draft->draftKey, $item2);
+
+        $this->assertTrue($cart->draftHasItem($draft, $product1));
+        $this->assertTrue($cart->draftHasItem($draft, $product2));
+        $this->assertEquals(6000, $draft->getTotal());
+
+        // Remove an item from draft
+        $cart->removeItemFromDraft($draft->draftKey, 1);
+        $this->assertFalse($cart->draftHasItem($draft, $product2));
+
+        $this->assertEquals(2000, $draft->getTotal());
+    }
+}