feat: Add trading logic for BB, RSI, and EMA indicators in strategy

src/pages/backtesting/backtesting_page.py

@@ -69,7 +69,6 @@ class DynamicStrategy(Strategy):
                 self.indicators[f"{ind_name}_lower"] = bb_vals[2]
 
     def next(self):
-        # Simple example strategy - should be customized based on user input
         price = self.data.Close[-1]
         
         # Example trading logic using indicators
@@ -91,6 +90,33 @@ class DynamicStrategy(Strategy):
                 elif macd < signal and prev_macd >= prev_signal and self.position:
                     self.position.close()
                     
+            elif ind_config['type'] == 'BB':
+                upper = self.indicators[f"{ind_name}_upper"][-1]
+                lower = self.indicators[f"{ind_name}_lower"][-1]
+                
+                # Buy when price touches lower band
+                if price <= lower and not self.position:
+                    self.buy()
+                # Sell when price touches upper band
+                elif price >= upper and self.position:
+                    self.position.close()
+                    
+            elif ind_config['type'] == 'RSI':
+                rsi = self.indicators[ind_name][-1]
+                
+                # Buy when RSI is below 30 (oversold)
+                if rsi < 30 and not self.position:
+                    self.buy()
+                # Sell when RSI is above 70 (overbought)
+                elif rsi > 70 and self.position:
+                    self.position.close()
+                    
+            elif ind_config['type'] == 'EMA':
+                if price > self.indicators[ind_name][-1] and not self.position:
+                    self.buy()
+                elif price < self.indicators[ind_name][-1] and self.position:
+                    self.position.close()
+
 def get_available_indicators() -> Dict:
     """Returns available indicators and their parameters"""
     return {