Simplify liquidation price calling structure

freqtrade/exchange/exchange.py

@@ -2432,36 +2432,6 @@ class Exchange:
         """
         return 0.0
 
-    def get_liquidation_price(
-            self,
-            pair: str,
-            open_rate: float,
-            amount: float,  # quote currency, includes leverage
-            stake_amount: float,
-            leverage: float,
-            is_short: bool
-    ) -> Optional[float]:
-
-        if self.trading_mode in TradingMode.SPOT:
-            return None
-        elif (
-            self.trading_mode == TradingMode.FUTURES
-        ):
-            isolated_liq = self.get_or_calculate_liquidation_price(
-                pair=pair,
-                open_rate=open_rate,
-                is_short=is_short,
-                amount=amount,
-                stake_amount=stake_amount,
-                wallet_balance=stake_amount,  # In isolated mode, stake-amount = wallet size
-                mm_ex_1=0.0,
-                upnl_ex_1=0.0,
-            )
-            return isolated_liq
-        else:
-            raise OperationalException(
-                "Freqtrade currently only supports futures for leverage trading.")
-
     def funding_fee_cutoff(self, open_date: datetime):
         """
         :param open_date: The open date for a trade
@@ -2622,7 +2592,7 @@ class Exchange:
         else:
             return 0.0
 
-    def get_or_calculate_liquidation_price(
+    def get_liquidation_price(
         self,
         pair: str,
         # Dry-run
@@ -2630,7 +2600,7 @@ class Exchange:
         is_short: bool,
         amount: float,  # Absolute value of position size
         stake_amount: float,
-        wallet_balance: float,  # Or margin balance
+        wallet_balance: float = 0.0,
         mm_ex_1: float = 0.0,  # (Binance) Cross only
         upnl_ex_1: float = 0.0,  # (Binance) Cross only
     ) -> Optional[float]:

freqtrade/freqtradebot.py

@@ -1732,12 +1732,12 @@ class FreqtradeBot(LoggingMixin):
                 # TODO: Margin will need to use interest_rate as well.
                 # interest_rate = self.exchange.get_interest_rate()
                 trade.set_liquidation_price(self.exchange.get_liquidation_price(
-                    leverage=trade.leverage,
                     pair=trade.pair,
+                    open_rate=trade.open_rate,
+                    is_short=trade.is_short,
                     amount=trade.amount,
                     stake_amount=trade.stake_amount,
-                    open_rate=trade.open_rate,
-                    is_short=trade.is_short
+                    wallet_balance=trade.stake_amount,
                 ))
 
             # Updating wallets when order is closed

freqtrade/optimize/backtesting.py

@@ -881,7 +881,7 @@ class Backtesting:
                 open_rate=propose_rate,
                 amount=amount,
                 stake_amount=trade.stake_amount,
-                leverage=leverage,
+                wallet_balance=trade.stake_amount,
                 is_short=is_short,
             ))