From f9cf826f1c190894083338c3f2b9c53786eead68 Mon Sep 17 00:00:00 2001
From: Matt-Yorkley <9029026+Matt-Yorkley@users.noreply.github.com>
Date: Tue, 7 Apr 2020 14:53:26 +0200
Subject: [PATCH] Bring Spree::Stock::Quantifier in to OFN

This is the original unmodified Class from Spree. Modifications added in subsequent commits.
---
 app/models/spree/stock/quantifier.rb | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 app/models/spree/stock/quantifier.rb

diff --git a/app/models/spree/stock/quantifier.rb b/app/models/spree/stock/quantifier.rb
new file mode 100644
index 0000000000..6b1c11de62
--- /dev/null
+++ b/app/models/spree/stock/quantifier.rb
@@ -0,0 +1,28 @@
+module Spree
+  module Stock
+    class Quantifier
+      attr_reader :stock_items
+
+      def initialize(variant)
+        @variant = variant
+        @stock_items = Spree::StockItem.joins(:stock_location).where(:variant_id => @variant, Spree::StockLocation.table_name =>{ :active => true})
+      end
+
+      def total_on_hand
+        if Spree::Config.track_inventory_levels
+          stock_items.sum(&:count_on_hand)
+        else
+          Float::INFINITY
+        end
+      end
+
+      def backorderable?
+        stock_items.any?(&:backorderable)
+      end
+
+      def can_supply?(required)
+        total_on_hand >= required || backorderable?
+      end
+    end
+  end
+end