def getbalance(c, uid):
return "{:.4f}".format(
check_balance(
c,
uid) /
float(
config.get_multiplier(c)))
def withdraw(currency):
if not is_logged_in(session):
flash("Please log in to perform that action.", "error")
return home_page("ltc_btc")
if not config.is_valid_currency(currency):
flash("Invalid Currency!", "error")
return account_page()
if request.method == 'GET':
return account_page(withdraw=currency)
elif request.method == 'POST':
if 'amount' not in request.form or 'address' not in request.form:
flash("Please enter an address and an amount!", "error")
return account_page()
try:
total = string_to_currency_unit(
request.form['amount'],
config.get_multiplier(currency))
except:
flash("Invalid amount!", "error")
return account_page()
if check_balance(currency, session['userid']) < total or total < 0:
flash("Balance too low to execute withdrawal!", "error")
return account_page()
# TODO: add valid address checking
adjustbalance(currency, session['userid'], -1 * total)
co = CompletedOrder(
currency +
"_" +
currency,
"WITHDRAWAL",
total,
0,
session['userid'],
is_withdrawal=True,
withdrawal_address=request.form['address'])
db_session.add(co)
db_session.commit()
flash("Deposit to " + request.form['address'] + " completed!", "success")
return account_page()
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)
