def handle(self, sale_string):
seller = self.msg.connection.contact
sale_result = self.verify_sale(sale_string, seller)
if sale_result[0] == 0: #sale failed
self.respond(
"ERROR: " + ', '.join(sale_result[1]) +
". Sale format: sale serial# firstname lastname mobile# price regioncode description"
)
else:
sale_data = sale_result[1]
product_code = sale_result[2]
#verify that seller has the item to be sold in stock
current_stock = Stock.get_existing(sale_data['seller'].alias,
product_code)
if current_stock is None or current_stock.stock_amount <= 0:
self.respond("ERROR: No %s in stock." % product_code)
return True
#verify that the serial # is not a duplicate
exists = Sale.by_serial(sale_data['serial'])
if exists:
self.respond("ERROR: %s is already registered." %
sale_data['serial'])
return True
#now create and save the new sale record
s = Sale(**sale_data)
s.save()
#subtract the sale from the retailer's stock
current_stock.stock_amount -= 1
current_stock.save()
payment_response = "Cash sale."
self.respond("%s registered to %s %s by %s." % (
s.serial,
s.fname,
s.lname,
s.seller.alias,
) + " " + payment_response)
