WIP : Implement coupon check on ordering tunnel

@todo CSS
@todo List coupon used and detailed effects

core/lib/Thelia/Action/Coupon.php

@@ -105,6 +105,7 @@ class Coupon extends BaseAction implements EventSubscriberInterface
         $coupon = $couponFactory->buildCouponFromCode($event->getCode());
 
         $isValid = $coupon->isMatching();
+
         if ($isValid) {
             /** @var Request $request */
             $request = $this->container->get('request');
@@ -121,7 +122,11 @@ class Coupon extends BaseAction implements EventSubscriberInterface
 
             $totalDiscount = $couponManager->getDiscount();
 
+            // @todo decrement coupon quantity
+
             // @todo modify Cart total discount
+            $request->getSession()->getCart()->setDiscount($totalDiscount);
+
         }
 
         $event->setIsValid($isValid);

core/lib/Thelia/Config/Resources/routing/front.xml

@@ -155,7 +155,7 @@
     </route>
 
     <route id="order.coupon.process" path="/order/coupon" methods="post">
-        <default key="_controller">Thelia\Controller\Front\CouponController::consume</default>
+        <default key="_controller">Thelia\Controller\Front\CouponController::consumeAction</default>
         <default key="_view">order-invoice</default>
     </route>
 

core/lib/Thelia/Controller/Front/CouponController.php

@@ -73,6 +73,7 @@ class CouponController extends BaseFrontController
 
             // Dispatch Event to the Action
             $this->getDispatcher()->dispatch(TheliaEvents::COUPON_CONSUME, $couponConsumeEvent);
+
         } catch (FormValidationException $e) {
             $message = sprintf('Please check your coupon code: %s', $e->getMessage());
         } catch (PropelException $e) {

core/lib/Thelia/Coupon/BaseFacade.php

@@ -107,7 +107,7 @@ class BaseFacade implements FacadeInterface
      */
     public function getCheckoutTotalPrice()
     {
-        // TODO: Implement getCheckoutTotalPrice() method.
+        return $this->getRequest()->getSession()->getOrder()->getTotalAmount();
     }
 
     /**
@@ -117,7 +117,7 @@ class BaseFacade implements FacadeInterface
      */
     public function getCheckoutPostagePrice()
     {
-        // TODO: Implement getCheckoutPostagePrice() method.
+        return $this->getRequest()->getSession()->getOrder()->getPostage();
     }
 
     /**
@@ -127,7 +127,8 @@ class BaseFacade implements FacadeInterface
      */
     public function getCartTotalPrice()
     {
-        // TODO: Implement getCartTotalPrice() method.
+        return $this->getRequest()->getSession()->getCart()->getTotalAmount();
+
     }
 
     /**
@@ -137,7 +138,7 @@ class BaseFacade implements FacadeInterface
      */
     public function getCheckoutCurrency()
     {
-        $this->getRequest()->getSession()->getCurrency();
+        return $this->getRequest()->getSession()->getCurrency()->getCode();
     }
 
 
@@ -148,7 +149,7 @@ class BaseFacade implements FacadeInterface
      */
     public function getNbArticlesInCart()
     {
-        // TODO: Implement getNbArticlesInCart() method.
+        return count($this->getRequest()->getSession()->getCart()->getCartItems());
     }
 
     /**
@@ -158,16 +159,13 @@ class BaseFacade implements FacadeInterface
      */
     public function getCurrentCoupons()
     {
-        // @todo implement
-//        $consumedCoupons = $this->getRequest()->getSession()->getConsumedCoupons();
-        // @todo convert coupon code to coupon Interface
-
+        $couponCodes = $this->getRequest()->getSession()->getConsumedCoupons();
 
+        if (null === $couponCodes) {
+            return array();
+        }
         $couponFactory = $this->container->get('thelia.coupon.factory');
 
-        // @todo get from cart
-        $couponCodes = array('XMAS', 'SPRINGBREAK');
-
         $coupons = array();
         foreach ($couponCodes as $couponCode) {
             $coupons[] = $couponFactory->buildCouponFromCode($couponCode);
@@ -246,7 +244,7 @@ class BaseFacade implements FacadeInterface
      */
     public function getMainCurrency()
     {
-        // TODO: Implement getMainCurrency() method.
+        return $this->getRequest()->getSession()->getCurrency();
     }
 
     /**

core/lib/Thelia/Coupon/CouponManager.php

@@ -184,7 +184,7 @@ class CouponManager
         /** @var CouponInterface $coupon */
         foreach ($coupons as $coupon) {
             // @todo modify Cart with discount for each cart item
-            $discount += $coupon->getDiscount($this->adapter);
+            $discount += $coupon->exec($this->adapter);
         }
 
         return $discount;

core/lib/Thelia/Coupon/Type/CouponAbstract.php

@@ -195,7 +195,7 @@ abstract class CouponAbstract implements CouponInterface
      *
      * @return float Amount removed from the Total Checkout
      */
-    public function getDiscount()
+    public function exec()
     {
         return $this->amount;
     }

core/lib/Thelia/Coupon/Type/CouponInterface.php

@@ -205,7 +205,7 @@ interface CouponInterface
      *
      * @return float Amount removed from the Total Checkout
      */
-    public function getDiscount();
+    public function exec();
 
     /**
      * Check if the current Coupon is matching its conditions (Rules)

core/lib/Thelia/Coupon/Type/RemoveXPercentManager.php

@@ -98,7 +98,7 @@ class RemoveXPercentManager extends CouponAbstract
      * @throws \InvalidArgumentException
      * @return float
      */
-    public function getDiscount()
+    public function exec()
     {
         if ($this->percent >= 100) {
             throw new \InvalidArgumentException(