1 files changed, 19 insertions, 5 deletions

diff --git a/market.py b/market.py
index ce41841..eff670c 100644
--- a/market.py
+++ b/market.py
@@ -210,18 +210,32 @@ class Market:
         self.report.log_stage("follow_orders_end")
 
     def prepare_trades(self, base_currency="BTC", liquidity="medium",
-            compute_value="average", repartition=None, only=None):
+            compute_value="average", repartition=None, only=None,
+            available_balance_only=False):
 
         self.report.log_stage("prepare_trades",
                 base_currency=base_currency, liquidity=liquidity,
                 compute_value=compute_value, only=only,
-                repartition=repartition)
+                repartition=repartition, available_balance_only=available_balance_only)
 
         values_in_base = self.balances.in_currency(base_currency,
                 compute_value=compute_value)
-        total_base_value = sum(values_in_base.values())
+        if available_balance_only:
+            balance = self.balances.all.get(base_currency)
+            if balance is None:
+                total_base_value = portfolio.Amount(base_currency, 0)
+            else:
+                total_base_value = balance.exchange_free + balance.margin_available
+        else:
+            total_base_value = sum(values_in_base.values())
         new_repartition = self.balances.dispatch_assets(total_base_value,
                 liquidity=liquidity, repartition=repartition)
+        if available_balance_only:
+            for currency, amount in values_in_base.items():
+                if currency != base_currency:
+                    new_repartition.setdefault(currency, portfolio.Amount(base_currency, 0))
+                    new_repartition[currency] += amount
+
         self.trades.compute_trades(values_in_base, new_repartition, only=only)
 
     def print_tickers(self, base_currency="BTC"):
@@ -292,7 +306,7 @@ class Processor:
                     "before": False,
                     "after": True,
                     "fetch_balances": ["begin", "end"],
-                    "prepare_trades": { "only": "acquire" },
+                    "prepare_trades": { "only": "acquire", "available_balance_only": True },
                     "prepare_orders": { "only": "acquire", "compute_value": "average" },
                     "move_balances": {},
                     "run_orders": {},
@@ -326,7 +340,7 @@ class Processor:
                     "before": False,
                     "after": True,
                     "fetch_balances": ["begin", "end"],
-                    "prepare_trades": {},
+                    "prepare_trades": { "available_balance_only": True },
                     "prepare_orders": { "compute_value": "average" },
                     "move_balances": {},
                     "run_orders": {},