payment api

app/models/sale_payment.rb

@@ -1,3 +1,157 @@
 class SalePayment < ApplicationRecord
   belongs_to :sale
+
+  :attr_accessor :received_amount, :card_payment_reference, :vochure_no, :giftcard_no, :customer_id, :external_payment_status
+
+  def process_payment(invoice, action_by)
+    self.sale = invoice
+
+    amount_due = invoice.grand_total
+    #get all payment for this invoices
+    invoice.sale_payments.each do |payment|
+      if (payment.payment_status == "paid" )
+        amount_due = amount_due - payment.payment_amount
+      end
+    end
+
+    if (amount_due > 0)
+      payment_status = false
+      #route to payment type
+      switch (payment_method)
+        case "cash"
+          payment_status = cash_payment
+        case "creditnote"
+          payment_status = creditnote_payment
+        case "visa"
+          payment_status = external_terminal_card_payment(:visa)
+        case "master"
+          payment_status = external_terminal_card_payment(:master)
+        case "jcb"
+          payment_status = external_terminal_card_payment(:jcb)
+        case "mpu"
+          payment_status = external_terminal_card_payment(:mpu)
+        case "unionpay"
+          payment_status = external_terminal_card_payment(:unionpay)
+        case "vochure"
+          payment_status = vochure_payment
+        case "giftcard"
+          payment_status = giftcard_payment
+        case "paypar"
+          #TODO: implement paypar implementation
+          payment_status = paypar_payment
+      end
+
+
+
+      #record an payment in sale-audit
+      remark = "Payment #{payment_method}- for Invoice #{invoice.receipt_no} Due [#{amount_due}]| pay amount -> #{amount} | Payment Status ->#{payment_status}"
+      sale_audit = SaleAudit.record_payment(invoice.id, remark, action_by)
+
+      return true, self.sale
+    else
+      #record an payment in sale-audit
+      remark = "No outstanding Amount - Grand Total [#{invoice.grand_total}] | Due [#{amount_due}] | Paid [#{invoice.amount_received}]"
+      sale_audit = SaleAudit.record_payment(invoice.id, remark,action_by)
+
+      return false, "No outstanding Amount"
+    end
+
+  end
+
+  private
+  def cash_payment
+    payment_status = false
+
+    self.payment_method = "cash"
+    self.payment_amount = self.received_amount
+    self.outstanding_amount = self.sale.grand_total - received_amount
+    self.payment_status = "paid"
+    payment_method = self.save!
+
+    sale_update_payment_status(self.received_amount)
+
+    return payment_status
+  end
+
+  def creditnote_payment(self.customer_id)
+    payment_status = false
+
+    self.payment_method = "creditnote"
+    self.payment_amount = self.received_amount
+    self.customer_id  = self.customer_id
+    self.outstanding_amount = 0 - self.received_amount
+    self.payment_status = "outstanding"
+    payment_method = self.save!
+
+    sale_update_payment_status(self.received_amount)
+
+    return payment_status
+  end
+
+  def external_terminal_card_payment(method)
+    payment_status = false
+
+    self.payment_method = method
+    self.payment_amount = self.received_amount
+    self.payment_reference  = self.card_payment_reference
+    self.outstanding_amount = self.sale.grand_total- self.received_amount
+    self.payment_status = "paid"
+    payment_method = self.save!
+
+    sale_update_payment_status(self.received_amount)
+
+    return payment_status
+  end
+
+  def vochure_payment
+    payment_status = false
+
+    #Next time - validate if the vochure number is valid - within
+    self.payment_method = "vochure"
+    self.payment_amount = self.received_amount
+    self.payment_reference  = self.vochure_no
+    self.outstanding_amount = self.sale.grand_total- self.received_amount
+    self.payment_status = "paid"
+    payment_method = self.save!
+
+    sale_update_payment_status(self.received_amount)
+
+    return payment_status
+
+  end
+
+  def giftcard_payment
+    payment_status = false
+
+    #Next time - validate if the vochure number is valid - within
+    self.payment_method = "giftcard"
+    self.payment_amount = self.received_amount
+    self.payment_reference  = self.giftcard_no
+    self.outstanding_amount = self.sale.grand_total- self.received_amount
+    self.payment_status = "paid"
+    payment_method = self.save!
+
+    sale_update_payment_status(self.received_amount)
+
+    return payment_status
+
+  end
+
+  def paypar_payment
+    ##TODO - Integration with Paypar (SmartPay)
+  end
+
+  def sale_update_payment_status(paid_amount)
+
+    #update amount_outstanding
+    self.sale.amount_received =   self.sale.amount_received + paid_amount
+    self.sale.amount_changed = amount -   self.sale.amount_received
+    if (self.sale.grand_total <=   self.sale.amount_received &&   self.sale.amount_changed > 0)
+      self.sale.payment_status = "paid"
+      self.sale.sale_status = "completed"
+      self.sale.save!
+    end
+
+  end
+
 end