def coupon_buy_action(self, params=None):
database = Database()
try:
if params and len(params) == 1:
userID = self.userID
if self.userID:
response = database.buy_coupon(
userID, Utils.array_deserializer(params[0]))
self.send_request(response['response'])
else:
self.send_request('NO_LOGIN')
else:
self.send_request('PARAMS_COUNT')
except:
self.send_request('UNEXPECTED_ERROR')
del database
