From c0414e1568940cb39bd79c23b84e451e7f068a4c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Kobierzy=C5=84ski?= <michal.ko@convert.no>
Date: Mon, 15 Nov 2021 15:04:16 +0100
Subject: [PATCH] [IHB-937] gift code for whole cart fix

---
 Model/Checkout.php   |  4 ++--
 Model/Dibs/Items.php | 57 ++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 57 insertions(+), 4 deletions(-)

diff --git a/Model/Checkout.php b/Model/Checkout.php
index b06a23bf..bb97c41b 100644
--- a/Model/Checkout.php
+++ b/Model/Checkout.php
@@ -129,8 +129,8 @@ public function initCheckout($reloadIfCurrencyChanged = true)
         $billingAddress->save();
         $shippingAddress->save();
 
-        $this->totalsCollector->collectAddressTotals($quote, $shippingAddress);
-        $this->totalsCollector->collectQuoteTotals($quote);
+//        $this->totalsCollector->collectAddressTotals($quote, $shippingAddress);
+//        $this->totalsCollector->collectQuoteTotals($quote);
 
         $quote->collectTotals();
         $this->quoteRepository->save($quote);
diff --git a/Model/Dibs/Items.php b/Model/Dibs/Items.php
index ed62509d..d8ea321a 100644
--- a/Model/Dibs/Items.php
+++ b/Model/Dibs/Items.php
@@ -38,11 +38,16 @@ class Items
     protected $_itemsArray = [];
 
     protected $addCustomOptionsToItemName = null;
+    /**
+     * @var \Magento\SalesRule\Api\RuleRepositoryInterface
+     */
+    private $ruleRepository;
 
     public function __construct(
         \Dibs\EasyCheckout\Helper\Data $helper,
         \Magento\Catalog\Helper\Product\Configuration $productConfig,
-        \Magento\Tax\Model\Calculation $calculationTool
+        \Magento\Tax\Model\Calculation $calculationTool,
+        \Magento\SalesRule\Api\RuleRepositoryInterface $ruleRepository
     ) {
         $this->_helper = $helper;
         $this->_productConfig = $productConfig;
@@ -50,6 +55,7 @@ public function __construct(
 
         // resets all values
         $this->init();
+        $this->ruleRepository = $ruleRepository;
     }
 
     public function init($store = null)
@@ -478,6 +484,48 @@ public function addDiscounts($couponCode)
         return $this;
     }
 
+    /**
+     * Check if discount was applied for whole cart
+     *
+     * @param Quote $quote
+     */
+    private function addDiscountByCartRule(Quote  $quote) : void
+    {
+        $ruleIds = $quote->getAppliedRuleIds();
+        if (!$ruleIds) {
+            return;
+        }
+
+        foreach (explode(',', $ruleIds) as $ruleId) {
+            try {
+                $rule = $this->ruleRepository->getById($ruleId);
+            } catch (\Exception $e) {
+                continue;
+            }
+
+            if ($rule->getSimpleAction() != 'cart_fixed') {
+                continue;
+            }
+
+            $discount = $quote->getSubtotal() - $quote->getSubtotalWithDiscount();
+            $discount = $this->addZeroes($discount);
+            $orderItem = new OrderItem();
+            $reference = $rule->getName();
+            $orderItem
+                ->setReference($reference)
+                ->setName($quote->getCouponCode() ? (string)__('Discount (%1)', $quote->getCouponCode()) : (string)__('Discount'))
+                ->setUnit("st")
+                ->setQuantity(1)
+                ->setTaxRate($this->addZeroes(0)) // the tax rate i.e 25% (2500)
+                ->setTaxAmount(0) // total tax amount
+                ->setUnitPrice(-$discount) // excl. tax price per item
+                ->setNetTotalAmount(-$discount) // excl. tax
+                ->setGrossTotalAmount(-$discount); // incl. tax
+
+            $this->_cart[$reference] = $orderItem;
+        }
+    }
+
     public function validateTotals($grandTotal)
     {
         //calculate Dibs total
@@ -591,7 +639,12 @@ public function generateOrderItemsFromQuote(Quote $quote)
             $this->addShipping($shippingAddress);
         }
 
-        $this->addDiscounts($quote->getCouponCode());
+        // If there is no discount per items, but code does exist
+        // it means, that discount was applied on whole cart
+        // @TODO: Refactor this to external model
+        count($this->_discounts)
+            ? $this->addDiscounts($quote->getCouponCode())
+            : $this->addDiscountByCartRule($quote);
 
         try {
             $this->validateTotals($quote->getGrandTotal());