Multi Platform Forced Sliding Closing Buy One Price

function cancelAllOrders() {
    var orders = null;
    while (!(orders = exchange.GetOrders())) {
        Sleep(Interval);
    }
    
    if (orders.length > 0) {
        for (var j = 0; j < orders.length; j++) {
            exchange.CancelOrder(orders[j].Id);
            if (j < (orders.length-1)) {
                Sleep(2000);
            }
        }
    }
}

function sellAll() {
    cancelAllOrders();
    var initAccount = _C(exchange.GetAccount);
    Log(exchange.GetName(), exchange.GetCurrency(), initAccount);
    if (initAccount.Stocks == 0) {
        Log("Short position");
        return;
    }
    var remaind = initAccount.Stocks - KeepStock;
    var account = initAccount;
    while (remaind >= 0.001) {
        var ticker = _C(exchange.GetTicker);
        exchange.Sell(ticker.Buy - SlidePrice, remaind);
        Sleep(RetryInterval * 1000);
        cancelAllOrders();
        account = _C(exchange.GetAccount);
        remaind = account.Stocks - KeepStock;
    }
    Log("Average selling price", (account.Balance - initAccount.Balance) / (initAccount.Stocks - account.Stocks));
    Log(account);
}

function main() {
    for (var i = 0; i < exchanges.length; i++) {
        exchange = exchanges[i];
        sellAll();
    }
}