def place_first_order(max_price, my_order, orders):
# TODO: receive balance as parameter and check:
# TODO: 1) is it possible to place before cancel?
# TODO: 2) do i have balance for creating order?
if my_order.price == orders[0].price and my_order.amount == orders[0].amount: # My order is top order
next_order = find_next_order(my_order.price, orders)
update, price = False, 0
if my_order.price - next_order.price > 0.2: # If price is can be reduced
log.log_trading('Reducing top order price')
update = True
price = next_order.price + 0.1
elif my_order.amount < TOP_ORDER_PRICE: # If my top order is less than TOP_ORDER_PRICE BTC
log.log_trading('Increasing top order amount')
update = True
price = my_order.price
if update:
bitnz.place_order(price, TOP_ORDER_PRICE)
bitnz.cancel_order(my_order)
my_order.price = price
my_order.amount = TOP_ORDER_PRICE
elif not my_order.price == max_price: # If my order is not top order and is not max_price
log.log_trading('Replacing top order')
price = orders[0].price + 1e-8
if price > max_price:
price = max_price
bitnz.place_order(price, TOP_ORDER_PRICE)
bitnz.cancel_order(my_order)
my_order.price = price
my_order.amount = TOP_ORDER_PRICE
def delete_overpriced_bids(max_value, orders):
for i in range(len(orders) - 1, -1, -1):
if orders[i].price > max_value:
log.log_trading('Deleting overpriced order')
bitnz.cancel_order(orders[i])
del orders[i]
