def wrapper(transaction_data):
terminal_id = transaction_data['terminal_id']
session = database.get_session(terminal_id)
if session is None:
_process_unregistered_terminal_id(transaction_data)
return f(transaction_data)
def _process_test_rq(transaction_data):
""" Handle TO, create session for terminal or
respond with '00' if one created earlier """
terminal_id = transaction_data['terminal_id']
session = database.get_session(terminal_id)
if session is None:
database.post_session(Session(terminal_id))
transaction_data['bitmap'] = Bitmap.test_rs()
transaction_data['transaction_id'] = action_codes['test']
return _process_accepted_and_implemented(transaction_data)
def _process_refund_rs(transaction_data):
transaction_data['bitmap'] = Bitmap.sale_rs()
terminal_id = transaction_data['terminal_id']
card = database.get_card(transaction_data['PAN'])
amount = transaction_data['amount']
refund_amount = int(amount[:-2]) + float(amount[-2:]) / 100
session = database.get_session(terminal_id)
session.add_refund(refund_amount)
card.deposit(refund_amount)
database.save_state()
transaction_data['transaction_id'] = action_codes['refund']
return _process_accepted_and_implemented(transaction_data)
def _process_settlement_rq(transaction_data):
transaction_data['bitmap'] = Bitmap.settlement_rs()
transaction_data['transaction_id'] = action_codes['settlement']
terminal_id = transaction_data['terminal_id']
text_data = transaction_data['text_data']
session = database.get_session(terminal_id)
session_text_data = Transaction._format_text_data(session.sales_count,
session.sales_amount,
session.refund_count,
session.refund_amount)
if session_text_data != text_data:
_process_revision_error(transaction_data)
_process_accepted_and_implemented(transaction_data)
def _process_sale_rq(transaction_data):
transaction_data['bitmap'] = Bitmap.sale_rs()
terminal_id = transaction_data['terminal_id']
card = database.get_card(transaction_data['PAN'])
amount = transaction_data['amount']
sell_amount = int(amount[:-2]) + float(amount[-2:]) / 100
if card.balance < sell_amount:
return _process_insufficient_funds(transaction_data)
session = database.get_session(terminal_id)
session.add_sell(sell_amount)
card.buy(sell_amount)
database.save_state()
transaction_data['transaction_id'] = action_codes['sale']
return _process_accepted_and_implemented(transaction_data)