order queue processing

app/models/sale.rb

@@ -3,27 +3,60 @@ class Sale < ApplicationRecord
   belongs_to :cashier
   belongs_to :customer
   has_many :sale_items
+  has_many :sale_discount_items
   has_many :sale_discounts
   has_many :sale_taxes
   has_many :sale_payments
   has_many :sale_orders
 
-  def generate_invoice_from_order (order_no)
+  def generate_invoice_from_order (order_no, sale_id)
+    #if sale_id is exsit and validate
+    #add order to that invoice
+    if (sale_id)
+      self = Sale.find(sale_id)
+    end
+    if self.sale_status == "void"
+      return false, "Invoice is void. Cannot be edited"
+    else
+      order = Order.find(order_no)
+      if order
+        order.order_items.each do |item|
+          self.sale_items.add(add_item(item))
+        end
+      end
+
+      link_order_sale(order.id)
+
+      return self.save!
+
+    end
+
+
   end
 
   def generate_invoice_by_items (items)
+
   end
 
   def add_item (item)
+    #check if the item is on promotion
+
     #save sale_audit
+    sale_item = SaleItem.new
+    sale_item.sale = self
+    sale_item.product_code = item.item_code
+    sale_item.product_name = item.item_name
+    sale_item.qty = item.qty
+    return sale_item
   end
 
-  def remove_item (item)
+
+  def update_item (item)
     #save sale_audit
 
   end
 
-  def apply_discount_item (promotion_id, item)
+  def apply_item_discount (promotion_id, item)
   end
 
   def apply_discount (discount_type, discount_code)
@@ -33,8 +66,13 @@ class Sale < ApplicationRecord
   def accept_payment (payment_method, amount, payment_ref, payment_external_result)
   end
 
-  def void_sales (void_by, reason, approval_code)
+  def void_sales (void_by, reason, approval_code, request_by)
     #save sale_audit
+    self.sale_status = "void"
+    self.
+
+
+    
   end
 
   #compute - invoice total
@@ -64,14 +102,17 @@ class Sale < ApplicationRecord
     #tax_profile - list by order_by
     tax_profiles = TaxProfile.all.order("order_by asc")
 
-
+    total_amount = self.total_amount
     #Creat new tax records
     tax_profiles.each do |tax|
       sale_tax = SaleTax.new(:sale => self)
       sale_tax.tax_name = tax.name
       sale_tax.tax_rate = tax.rate
       #include or execulive
-      sale_tax.tax_payable_amount =  self.total_amount * tax.rate
+      sale_tax.tax_payable_amount = total_amount  * tax.rate
+      #new taxable amount
+      total_amount = total_amount + sale_tax.tax_payable_amount
+
       sale_tax.inclusive = tax.inclusive
       sale_tax.save
     end
@@ -82,12 +123,22 @@ class Sale < ApplicationRecord
 
 
   private
+  def product_get_unit_price(item.item_code)
+    menu_instance_code = MenuInstanceCode.find_by_item_instance_code(item.item_code)
+    if (menu_instance_code)
+
+  end
+
+  def link_order_sale(order.id)
+
+  end
   #Generate new Receipt No when it is not assigned
   def generate_receipt_no
     #Date-Shift-
     if !self.receipt_no.nil?
       prefix = Date.now()
       self.receipt_no = prefix.to_s + "/" + self.shit_id.to_s + "/" + SeedGenerator.new_receipt_no().to_s
+      self.receipt_date = prefix
     end
   end
 end