Laboratorium Strategi: Generator Engine Prototype

Kamu adalah seorang kuantitatif pengembang MQL5 Expert Advisor senior.

Tolong buatkan saya skrip MQL5 EA lengkap berdasarkan spesifikasi strategi berikut:

[SPESIFIKASI STRATEGI]
- Nama Strategi: RSI Oversold + MA Filter
- Aturan Entry (Beli/Sell): 
   1. RSI (Period: 14) Menembus ke bawah (<) 30
   2. SMA (Period: 50) Berada di atas (>) Price Close
- Aturan Exit: Berdasarkan Stop Loss / Take Profit
- Manajemen Risiko: Stop Loss 300, Take Profit 600

[PERSYARATAN KODE]
1. Gunakan library CTrade bawaan MetaTrader 5.
2. Lakukan inisialisasi handle indikator pada OnInit() dan release handle pada OnDeinit().
3. Sertakan penanganan error penempatan order (check return code).

//+------------------------------------------------------------------+
//| Auto-generated by Backtest Lab Engine                           |
//+------------------------------------------------------------------+
#property copyright "Backtest Lab"
#include <Trade\Trade.mqh>
CTrade trade;

// Inputs
// Global Handles & Buffers
int handle_rsi_0;
int handle_sma_1;

input group "=== Risk Management ===";
input int      InpStopLoss   = 300; // Stop Loss (Pips)
input int      InpTakeProfit = 600; // Take Profit (Pips)
input double   InpLotSize    = 0.1; // Lot Size



int OnInit() {
    handle_rsi_0 = iRSI(_Symbol, _Period, 14, PRICE_CLOSE);
    if(handle_rsi_0 == INVALID_HANDLE) { Print("Gagal membuat handle RSI"); return(INIT_FAILED); }
    handle_sma_1 = iMA(_Symbol, _Period, 50, 0, MODE_SMA, PRICE_CLOSE);
    if(handle_sma_1 == INVALID_HANDLE) { Print("Gagal membuat handle SMA"); return(INIT_FAILED); }

    return(INIT_SUCCEEDED);
}

void OnDeinit(const int reason) {
    IndicatorRelease(handle_rsi_0);
    IndicatorRelease(handle_sma_1);

}

void OnTick() {
    // Hanya eksekusi pada candle baru / tick valid
    if(PositionsTotal() > 0) return; // Maksimal 1 posisi aktif

    double buf_rsi_0[1];
    if(CopyBuffer(handle_rsi_0, 0, 0, 1, buf_rsi_0) < 1) return;
    double buf_sma_1[1];
    if(CopyBuffer(handle_sma_1, 0, 0, 1, buf_sma_1) < 1) return;

    // Evaluasi Kondisi Entry
    bool buyCondition = (buf_rsi_0[0] < 30.0);

    if(buyCondition) {
        double price = SymbolInfoDouble(_Symbol, SYMBOL_ASK);
        double sl = price - (InpStopLoss * _Point * 10);
        double tp = price + (InpTakeProfit * _Point * 10);
        trade.Buy(InpLotSize, _Symbol, price, sl, tp, "Backtest Lab EA");
    }

}