Split dirtyProducts out into its own service

app/assets/javascripts/admin/services/dirty_products.js.coffee

@@ -0,0 +1,50 @@
+Admin.factory "DirtyProducts", ($parse) ->
+  # Temporary service to track changes in products on admin bulk product edit
+  dirtyProducts = {}
+  
+  addDirtyProperty = (dirtyObjects, objectID, propertyName, propertyValue) ->
+    dirtyObjects[objectID] = { id: objectID } if !dirtyObjects.hasOwnProperty(objectID)
+    $parse(propertyName).assign(dirtyObjects[objectID], propertyValue)
+    
+  return {
+    all: ->
+      dirtyProducts
+
+    addProductProperty: (productID, propertyName, propertyValue) ->
+      addDirtyProperty dirtyProducts, productID, propertyName, propertyValue
+    
+    addVariantProperty: (productID, variantID, propertyName, propertyValue) ->
+      if !dirtyProducts.hasOwnProperty(productID) or !dirtyProducts[productID].hasOwnProperty("variants")
+        addDirtyProperty dirtyProducts, productID, "variants", {}
+      addDirtyProperty dirtyProducts[productID]["variants"], variantID, propertyName, propertyValue
+
+    removeProductProperty: (productID, propertyName) ->
+      if dirtyProducts.hasOwnProperty("#{productID}") and
+        dirtyProducts["#{productID}"].hasOwnProperty("#{propertyName}") 
+          delete dirtyProducts["#{productID}"]["#{propertyName}"]
+          @deleteProduct productID  if Object.keys(dirtyProducts["#{productID}"]).length == 1 # ID
+
+    removeVariantProperty: (productID, variantID, propertyName) ->
+      if dirtyProducts.hasOwnProperty("#{productID}") and
+        dirtyProducts["#{productID}"].hasOwnProperty("variants") and
+        dirtyProducts["#{productID}"]["variants"].hasOwnProperty(variantID) and
+        dirtyProducts["#{productID}"]["variants"]["#{variantID}"].hasOwnProperty("#{propertyName}")
+          delete dirtyProducts["#{productID}"]["variants"]["#{variantID}"]["#{propertyName}"]
+          @deleteVariant productID, variantID  if Object.keys(dirtyProducts["#{productID}"]["variants"]["#{variantID}"]).length == 1 # ID
+    
+    deleteProduct: (productID) ->
+      delete dirtyProducts[productID]  if dirtyProducts.hasOwnProperty(productID)
+
+    deleteVariant: (productID, variantID) ->
+      if dirtyProducts.hasOwnProperty(productID) and
+        dirtyProducts[productID].hasOwnProperty("variants") and
+        dirtyProducts[productID].variants.hasOwnProperty(variantID)
+          delete dirtyProducts["#{productID}"]["variants"]["#{variantID}"] 
+          @removeProductProperty productID, "variants"  if Object.keys(dirtyProducts["#{productID}"]["variants"]).length < 1
+
+    count: ->
+      Object.keys(dirtyProducts).length
+
+    clear: ->
+      dirtyProducts = {}
+  }