Single Commodity Small Shop Strategy V20 Annualized 130

/*backtest
start: 2019-01-01 00:00:00
end: 2019-10-10 00:00:00
period: 1d
exchanges: [{"eid":"OKEX","currency":"ETH_USDT","stocks":0}]
args: [["OpMode",1,10989],["MaxAmount",1,10989],["TradeFee",0.001,10989]]
*/
//After registering on Bihuhttps://m.bihu.com/signup?i=1ewtKO&s=4&c=4
//Search IoT blockchain to contact the author or group leader
function main() {
    var isInit = 1; //Indicates initial state
    var allAmount;
    var cashRatio;
    var initAccount = _C(exchange.GetAccount);
    var lastPrice;
    var wantRatio;
    var wantOper=0;//Expected operation,0no operation,1buy,-1sell
    Log(initAccount);
    var mhigh;
    var mlow;
    while (true) {
        var mrecords = exchange.GetRecords(PERIOD_M30);
        //High and low points within a certain period
        mhigh=TA.Highest(mrecords, mnum, 'High');
        mlow=TA.Lowest(mrecords, mnum, 'Low');
        
        var midLine = (mhigh+mlow)/2;
        var ticker = _C(exchange.GetTicker);
        var account = _C(exchange.GetAccount);
        var nowPrice=ticker.Sell;
        var obj;
        
        if (isInit == 1) {  //The initialization state is the default warehouse;     
            //Account cash multiplied by the ratio, divided by the current price, before decimals3bit
            obj = $.Buy(_N(account.Balance * initRatio / ticker.Sell, 3));
            if (obj) { //If the purchase is successful, mark the opening position
                      opAmount = obj.amount;
                      lastPrice = obj.price;
                      isInit=0; //Initialization successful
                      account = _C(exchange.GetAccount);
                      Log("Initial Position Opened:Purchase quantity", opAmount);
                      Log("Current Holdings", account.Stocks);
            }
        }else{ //Routine operation check
            if(nowPrice>midLine*1.03||nowPrice>lastPrice*1.07){
                wantOper=-1;
            }else if(nowPrice<midLine*0.97||nowPrice<lastPrice*0.93){
                wantOper=1;
            }else{
                wantOper=0;
            }
            
            if (wantOper==-1) { //Close the position after exiting the market
                lastPrice=nowPrice; //Whether you bought it or not, the price was adjusted a bit
                allAmount=account.Balance+account.Stocks*ticker.Sell; //Calculate total amount
                cashRatio=parseFloat((account.Balance/allAmount).toFixed(3));
                
                if(cashRatio>0.9){ //Cash ratio greater than 0.9, do nothing 
                    wantRatio=0;
                }else if(cashRatio>0.8){ //Cash ratio exceeds 0.8, can sell 10% of positions 
                    wantRatio=0.1;
                }else{ //In other cases, you can sell 20% of the position
                    wantRatio=0.2;
                }
                
                obj = $.Sell(_N(allAmount*wantRatio/ticker.Sell, 3)); 
                if(obj){
                    opAmount = obj.amount;
                    Log("Close position: sell quantity",opAmount);
                    nowAccount = _C(exchange.GetAccount);
                    Log("Current cash",nowAccount.Balance,"Profit",allAmount - initAccount.Balance);
                }
            }else if (wantOper==1) { //Open a buying position
                lastPrice=nowPrice; //Whether you bought it or not, the price was adjusted a bit
                allAmount=account.Balance+account.Stocks*ticker.Sell; //Calculate total amount
                cashRatio=parseFloat((account.Balance/allAmount).toFixed(3));
                //Log("Ready to Buy",cashRatio);
                if(cashRatio<0.1){ //Cash ratio is less than 0.1, and I have no money left to buy
                    wantRatio=0;
                }else if(cashRatio<0.2){ //Cash ratio exceeds 0.2, can buy 10% of positions 
                    wantRatio=0.1;
                }else{ //In other cases, you can buy 20% of the position
                    wantRatio=0.2;
                }
                
                obj = $.Buy(_N(allAmount*wantRatio/ticker.Sell, 3)); 
                if(obj){
                    opAmount = obj.amount;
                    Log("Buy: buy quantity",opAmount);
                    nowAccount = _C(exchange.GetAccount);
                    Log("Current cash",nowAccount.Balance,"Profit",allAmount - initAccount.Balance);
                }
            }
        }
        Sleep(Interval*1000);
    }
}