Test Spot Buying and Selling Operations in Two Cases Limit Price and Market Price

/*backtest
start: 2020-01-01 00:00:00
end: 2020-04-01 00:00:00
period: 1d
exchanges: [{"eid":"Huobi","currency":"BTC_USD","balance":1000000,"stocks":0}]
*/

var id, order, buyAmount, lastPrice;

function main() {
    Log(exchange.GetAccount());

    lastPrice = parseInt(exchange.GetTicker().Last);
    id = exchange.Buy(lastPrice + 50, 5); // Limit Buy5Individual/UnitBTC,Buy price is the current latest price+50          
    Log(order = exchange.GetOrder(id));
    buyAmount = parseFloat(order.DealAmount);
    Log(exchange.GetAccount());

    Sleep(1000);
    last_price = parseInt(exchange.GetTicker().Last);
    id = exchange.Sell(lastPrice - 50, buyAmount); // Limit Sell5Individual/UnitBTC,Sell price is the current latest price-50    
    Log(order = exchange.GetOrder(id));
    Log(exchange.GetAccount());

    Sleep(1000);
    id = exchange.Buy(-1, 5); // Market BuyBTC,Trading Volume is5Individual/Unitusdt    
    Sleep(1000);    
    Log(order = exchange.GetOrder(id));
    buyAmount = parseFloat(order.DealAmount);    
    Log(exchange.GetAccount());

    Sleep(1000);    
    id = exchange.Sell(-1, buyAmount); // Market SellBTC,The trading volume is what was just boughtBTC   
    Sleep(1000);    
    Log(order = exchange.GetOrder(id));
    Log(exchange.GetAccount());

}