129 lines
4.2 KiB
Python
129 lines
4.2 KiB
Python
from typing import Optional
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from freqtrade.enums import Collateral, TradingMode
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from freqtrade.exceptions import OperationalException
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def liquidation_price(
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exchange_name: str,
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open_rate: float,
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is_short: bool,
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leverage: float,
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trading_mode: TradingMode,
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collateral: Optional[Collateral]
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) -> Optional[float]:
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if trading_mode == TradingMode.SPOT:
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return None
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if not collateral:
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raise OperationalException(
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"Parameter collateral is required by liquidation_price when trading_mode is "
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f"{trading_mode}"
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)
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if exchange_name.lower() == "binance":
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return binance(open_rate, is_short, leverage, trading_mode, collateral)
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elif exchange_name.lower() == "kraken":
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return kraken(open_rate, is_short, leverage, trading_mode, collateral)
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elif exchange_name.lower() == "ftx":
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return ftx(open_rate, is_short, leverage, trading_mode, collateral)
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raise OperationalException(
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f"liquidation_price is not implemented for {exchange_name}"
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)
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def exception(
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exchange: str,
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trading_mode: TradingMode,
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collateral: Collateral
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):
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"""
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Raises an exception if exchange used doesn't support desired leverage mode
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:param name: Name of the exchange
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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"""
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raise OperationalException(
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f"{exchange} does not support {collateral.value} {trading_mode.value} trading")
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def binance(
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open_rate: float,
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is_short: bool,
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leverage: float,
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trading_mode: TradingMode,
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collateral: Collateral
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):
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"""
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Calculates the liquidation price on Binance
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:param name: Name of the exchange
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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"""
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# TODO-lev: Additional arguments, fill in formulas
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if trading_mode == TradingMode.MARGIN and collateral == Collateral.CROSS:
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# TODO-lev: perform a calculation based on this formula
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# https://www.binance.com/en/support/faq/f6b010588e55413aa58b7d63ee0125ed
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exception("binance", trading_mode, collateral)
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elif trading_mode == TradingMode.FUTURES and collateral == Collateral.CROSS:
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# TODO-lev: perform a calculation based on this formula
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# https://www.binance.com/en/support/faq/b3c689c1f50a44cabb3a84e663b81d93
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exception("binance", trading_mode, collateral)
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elif trading_mode == TradingMode.FUTURES and collateral == Collateral.ISOLATED:
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# TODO-lev: perform a calculation based on this formula
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# https://www.binance.com/en/support/faq/b3c689c1f50a44cabb3a84e663b81d93
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exception("binance", trading_mode, collateral)
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# If nothing was returned
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exception("binance", trading_mode, collateral)
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def kraken(
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open_rate: float,
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is_short: bool,
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leverage: float,
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trading_mode: TradingMode,
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collateral: Collateral
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):
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"""
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Calculates the liquidation price on Kraken
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:param name: Name of the exchange
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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"""
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# TODO-lev: Additional arguments, fill in formulas
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if collateral == Collateral.CROSS:
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if trading_mode == TradingMode.MARGIN:
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exception("kraken", trading_mode, collateral)
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# TODO-lev: perform a calculation based on this formula
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# https://support.kraken.com/hc/en-us/articles/203325763-Margin-Call-Level-and-Margin-Liquidation-Level
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elif trading_mode == TradingMode.FUTURES:
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exception("kraken", trading_mode, collateral)
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# If nothing was returned
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exception("kraken", trading_mode, collateral)
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def ftx(
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open_rate: float,
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is_short: bool,
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leverage: float,
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trading_mode: TradingMode,
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collateral: Collateral
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):
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"""
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Calculates the liquidation price on FTX
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:param name: Name of the exchange
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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"""
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if collateral == Collateral.CROSS:
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# TODO-lev: Additional arguments, fill in formulas
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exception("ftx", trading_mode, collateral)
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# If nothing was returned
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exception("ftx", trading_mode, collateral)
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