support bracket order for alpaca-backtrader

Author: shlomiku

alpaca_backtrader_api/alpacastore.py

@@ -558,11 +558,15 @@ def order_create(self, order, stopside=None, takeside=None, **kwargs):
         # if order.exectype == bt.Order.StopTrail:
         #     okwargs['trailingStop'] = order.trailamount
 
-        # if stopside is not None:
-        #     okwargs['stopLoss'] = stopside.price
+        if stopside:
+            okwargs['stop_loss'] = {'stop_price': stopside.price}
+
+        if takeside:
+            okwargs['take_profit'] = {'limit_price': takeside.price}
+
+        if stopside or takeside:
+            okwargs['order_class'] = "bracket"
 
-        # if takeside is not None:
-        #     okwargs['takeProfit'] = takeside.price
 
         okwargs.update(**kwargs)  # anything from the user
 
@@ -572,6 +576,8 @@ def order_create(self, order, stopside=None, takeside=None, **kwargs):
     def _t_order_create(self):
         while True:
             try:
+                # if self.q_ordercreate.empty():
+                #     continue
                 msg = self.q_ordercreate.get()
                 if msg is None:
                     break