def cancelorder(old_order_id):
if not is_logged_in(session):
flash("Please log in to perform that action.", "error")
return home_page("ltc_btc")
uid = session['userid']
if old_order_id not in redis.smembers(str(uid) + "/orders"):
flash("Unable to cancel the specified order!", "error")
else:
orderid = generate_password_hash(str(random.random()))
redis.hmset(orderid, {"ordertype": 'cancel', "uid": uid, 'old_order_id': old_order_id})
redis.rpush("order_queue", orderid)
flash("Cancelled order!", "dismissable")
return home_page("ltc_btc")
def addorder():
""" Checks balance and essential stuff, generates an order ID then adds order to a redis queue. """
instrument = request.form['currency_pair']
if not is_logged_in(session):
flash("Please log in to perform that action.", "error")
return home_page(instrument)
# They shouldn't be able to modify the trade pair, if it isnt valid either
# I messed up somewhere or they are trying to do something wrong
if not config.is_valid_instrument(instrument):
flash("Unknown Error, contact the administrator!", "error")
return home_page("ltc_btc")
base_currency = request.form['currency_pair'].split("_")[0]
quote_currency = request.form['currency_pair'].split("_")[1]
try:
rprice = Decimal(request.form['price'])
ramount = string_to_currency_unit(
request.form['amount'],
config.get_multiplier(base_currency))
print(ramount)
except Exception as e:
print(e)
flash("Please enter numerical values for price and amount!", "error")
return home_page(instrument)
if ramount < 1: # TODO: find a good amount for this
flash("Transaction amount too low!", "error")
return home_page(instrument)
if rprice <= 0:
flash("Price must be greater than 0!", "error")
return home_page(instrument)
getcontext().prec = 6
whole, dec = ExtendedContext.divmod(
rprice * ramount / config.get_multiplier(base_currency), Decimal(1))
total = int(
whole *
config.get_multiplier(base_currency) +
dec *
config.get_multiplier(base_currency))
print("total: " + str(total))
uid = session['userid']
orderid = generate_password_hash(str(random.random()))
instrument = request.form['currency_pair']
bidtable = instrument + "/bid"
asktable = instrument + "/ask"
if request.form['ordertype'] == 'buy':
currency = quote_currency
if check_balance(currency, session['userid']) < total:
flash("Balance too low to execute order!", "error")
return home_page(instrument)
else:
adjustbalance(currency, session['userid'], -1 * total)
elif request.form['ordertype'] == 'sell':
currency = base_currency
if check_balance(currency, uid) < ramount:
flash("Balance too low to execute order!", "error")
return home_page(instrument)
else:
adjustbalance(currency, uid, -1 * ramount)
else:
# invalid order type, they must have been messing around
flash("Unknown Error, contact the administrator!", "error")
return home_page(instrument)
redis.hmset(orderid,
{"ordertype": request.form['ordertype'],
"instrument": request.form['currency_pair'],
"amount": ramount,
"uid": uid,
"price": rprice})
redis.rpush("order_queue", orderid)
redis.sadd(str(uid) + "/orders", orderid)
flash("Order placed successfully!","dismissable")
return home_page(instrument)
