1 files changed, 15 insertions, 4 deletions
diff --git a/app/models/character.rb b/app/models/character.rb
index a55230e..1d24f93 100644
--- a/app/models/character.rb
+++ b/app/models/character.rb
@@ -13,11 +13,22 @@ class Character < ApplicationRecord
   after_create :create_skills
   after_create { Hearth.create(character: self) }
 
-  def shift_item(gid, amount)
+  def shift_item(item, amount)
+    item = Item.find_by_gid(item) if item.is_a? String
     CharacterItem.transaction do
-      item = self.character_items.find_or_initialize_by(item: Item.find_by_gid(gid.to_s))
-      item.increment(:quantity, amount)
-      item.save
+      ci = self.character_items.find_or_initialize_by(item: item)
+      ci.increment(:quantity, amount)
+      ci.save
+    end
+  end
+
+  def pay_cost_for(activity)
+    CharacterItem.transaction do
+      if activity.whatnot[:cost]
+        activity.whatnot[:cost][:items]&.each do |item_gid, quantity|
+          self.shift_item(item_gid, -quantity)
+        end
+      end
     end
   end