376 lines
15 KiB
Plaintext
376 lines
15 KiB
Plaintext
"""
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Margin Grid Bot — Grid engine.
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Builds a grid of BUY/SELL orders around a center price.
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Supports both real trading and demo simulation.
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"""
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import math
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import time
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from dataclasses import dataclass, field
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from datetime import datetime, timezone
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from typing import Optional
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@dataclass
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class GridLevel:
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level_id: int # negative=below center (BUY), positive=above center (SELL)
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price: float
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side: str # "BUY" or "SELL"
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qty: float
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step_num: int # 1..N from center
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filled: bool = False
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def to_dict(self):
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return {
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"level_id": self.level_id,
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"price": round(self.price, 8),
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"side": self.side,
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"qty": self.qty,
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"step_num": self.step_num,
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"filled": self.filled,
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}
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@dataclass
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class GridState:
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center_price: float = 0.0
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step_percent: float = 0.005
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step_price: float = 0.0
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levels: list = field(default_factory=list)
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total_levels: int = 0
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take_profit_percent: float = 0.5
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symbol: str = "USDC_BTC"
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mode: str = "demo" # "demo" or "live"
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last_update: float = 0.0
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class GridEngine:
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"""
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Grid trading engine.
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Buy orders below center: center - n×step (level_id: -1, -2, ... -N)
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Sell orders above center: center + n×step (level_id: +1, +2, ... +N)
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Each round-trip = profit = step × qty.
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When a level is filled → check if total PnL >= take_profit → close position.
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"""
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def __init__(
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self,
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levels: int = 10,
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step_percent: float = 0.005,
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take_profit_percent: float = 0.5,
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symbol: str = "USDC_BTC",
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mode: str = "demo",
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):
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self.levels_count = levels
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self.step_percent = step_percent
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self.take_profit_percent = take_profit_percent
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self.symbol = symbol
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self.mode = mode
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def calc_step(self, center_price: float) -> float:
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return center_price * self.step_percent
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def get_grid_levels(
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self,
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center_price: float,
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base_qty: float = 0.0001,
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buy_center: float | None = None,
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sell_center: float | None = None,
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) -> list[GridLevel]:
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"""Build grid levels.
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buy_center - anchor for BUY levels (default: center_price)
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sell_center - anchor for SELL levels (default: center_price)
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If they equal center_price, behaviour matches the legacy symmetric grid.
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If they differ, BUY is built around buy_center and SELL around sell_center.
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Used by Kronos logic: at bias=up the BUY anchor stays near current_price (aggressive),
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the SELL anchor is shifted toward the forecasted price; at bias=down - mirrored.
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"""
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if buy_center is None:
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buy_center = center_price
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if sell_center is None:
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sell_center = center_price
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step = self.calc_step(center_price)
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levels = []
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for n in range(1, self.levels_count + 1):
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offset = n * step
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buy_price = buy_center - offset
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if buy_price <= 0:
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continue
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levels.append(GridLevel(
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level_id=-n,
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price=round(buy_price, 8),
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side="BUY",
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qty=base_qty,
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step_num=n,
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))
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sell_price = sell_center + offset
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levels.append(GridLevel(
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level_id=+n,
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price=round(sell_price, 8),
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side="SELL",
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qty=base_qty,
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step_num=n,
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))
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# Sort: BUY first (negatives), then SELL (positives)
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levels.sort(key=lambda x: x.level_id)
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return levels
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def build_state(self, current_price: float, base_qty: float = 0.001) -> GridState:
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levels = self.get_grid_levels(current_price, base_qty)
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step = self.calc_step(current_price)
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return GridState(
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center_price=current_price,
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step_percent=self.step_percent,
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step_price=step,
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levels=[l.to_dict() for l in levels],
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total_levels=len(levels),
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take_profit_percent=self.take_profit_percent,
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symbol=self.symbol,
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mode=self.mode,
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last_update=0.0,
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)
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def should_rebuild(self, current_price: float, center_price: float, threshold: float = 3) -> bool:
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"""Rebuild grid if price moved by threshold levels."""
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step = self.calc_step(center_price)
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if step == 0:
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return False
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levels_moved = abs(current_price - center_price) / step
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return levels_moved >= threshold
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@dataclass
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class DemoPosition:
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entry_price: float
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qty: float
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side: str # "BUY" or "SELL"
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opened_at: float = 0.0
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def current_value(self, current_price: float) -> float:
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if self.side == "BUY":
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return self.qty * current_price
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else:
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return self.qty * (2 * self.entry_price - current_price)
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def pnl_percent(self, current_price: float) -> float:
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if self.side == "BUY":
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return (current_price - self.entry_price) / self.entry_price * 100
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else:
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return (self.entry_price - current_price) / self.entry_price * 100
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class DemoSimulator:
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"""
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Simulates trading on a virtual wallet of DEMO_START_BALANCE USDC.
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Uses real market prices from Tradernet.
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"""
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def __init__(self, start_balance: float = 100.0):
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self.start_balance = start_balance
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self.balance = start_balance # USDC
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self.position: Optional[DemoPosition] = None
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self.orders: list = [] # simulated open orders
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self.trade_log: list = []
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def reset(self):
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self.balance = self.start_balance
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self.position = None
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self.orders = []
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self.trade_log = []
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def place_buy_order(self, price: float, qty: float, level_id: int):
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"""Simulate placing a BUY limit order.
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Auto-shrinks qty if balance is insufficient for full size.
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Min qty = 0.0001 BTC (Tradernet minimum lot for BTC-USDT).
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"""
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min_qty = 0.0001
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cost = price * qty
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if self.balance >= cost:
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# Full size fits
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self.balance -= cost
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self.orders.append({"side": "BUY", "price": price, "qty": qty, "level_id": level_id, "filled": False})
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return True
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# Try to fit a smaller qty into available balance
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affordable_qty = round(self.balance / price, 8) if price > 0 else 0
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if affordable_qty >= min_qty:
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cost = price * affordable_qty
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self.balance -= cost
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self.orders.append({"side": "BUY", "price": price, "qty": affordable_qty, "level_id": level_id, "filled": False})
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return True
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# Insufficient balance for even min lot — warn loudly (was silent before 15.06 patch)
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import logging
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logging.getLogger(__name__).warning(
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f"[DEMO] skip BUY @ ${price:,.2f} (qty={qty} BTC): "
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f"balance=${self.balance:.2f} < min_cost=${min_qty*price:.2f} "
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f"(short by ${min_qty*price - self.balance:.2f}); level_id={level_id}"
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)
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return False
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def place_sell_order(self, price: float, qty: float, level_id: int):
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"""Simulate placing a SELL limit order."""
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if self.position and self.position.side == "BUY" and self.position.qty >= qty:
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self.orders.append({"side": "SELL", "price": price, "qty": qty, "level_id": level_id, "filled": False})
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return True
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return False
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def check_fill_buy(self, current_price: float) -> list[dict]:
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"""Check if any BUY orders should be filled at current_price."""
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filled = []
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for order in self.orders:
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if not order["filled"] and order["side"] == "BUY" and current_price <= order["price"]:
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order["filled"] = True
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self.position = DemoPosition(
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entry_price=order["price"],
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qty=order["qty"],
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side="BUY",
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opened_at=time.time(),
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)
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self.balance += order["price"] * order["qty"] # rest of balance
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filled.append(order)
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self.orders = [o for o in self.orders if not o["filled"]]
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return filled
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def _cancel_open_sells(self, reason: str) -> int:
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"""Отменить все висящие (не-filled) SELL-ордера. Возвращает кол-во отменённых.
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Вызывается при ЗАКРЫТИИ позиции — иначе SELL-ордер висит и при fill
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без открытой позиции даёт фантомный pnl=0 и теряет proceeds.
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"""
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before = len(self.orders)
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self.orders = [o for o in self.orders if o["filled"] or o["side"] != "SELL"]
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cancelled = before - len(self.orders)
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if cancelled > 0:
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# Логгируем на уровне INFO через глобальный logger, если есть
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import logging
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logging.getLogger("grid").info(
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f"[DEMO] cancelled {cancelled} open SELL order(s): {reason}"
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)
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return cancelled
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def cancel_open_buys(self, reason: str = "") -> int:
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"""Cancel all unfilled BUY orders AND refund reserved balance.
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For BUY orders the cost (price * qty) was debited at
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place_buy_order — cancelling must credit it back, otherwise
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every grid rebuild silently drains the wallet. Returns the
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count of cancelled orders. SELL orders are not touched
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(no balance was reserved for them).
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"""
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new_orders = []
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refunded = 0.0
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cancelled = 0
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for o in self.orders:
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if o["side"] == "BUY" and not o.get("filled"):
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refunded += o["price"] * o["qty"]
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cancelled += 1
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else:
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new_orders.append(o)
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self.orders = new_orders
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if cancelled > 0:
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self.balance += refunded
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import logging
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logging.getLogger("grid").info(
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f"[DEMO] cancelled {cancelled} open BUY order(s) and refunded "
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f"${refunded:.2f}; reason={reason}"
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)
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return cancelled
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def check_fill_sell(self, current_price: float) -> list[dict]:
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"""Check if any SELL orders should be filled at current_price."""
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filled = []
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for order in self.orders:
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if not order["filled"] and order["side"] == "SELL" and current_price >= order["price"]:
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order["filled"] = True
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# Close BUY position
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if self.position and self.position.side == "BUY":
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proceeds = order["qty"] * order["price"]
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self.balance += proceeds
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pnl = proceeds - (self.position.qty * self.position.entry_price)
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exit_ts = time.time()
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self.trade_log.append({
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"side": "BUY→SELL",
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"entry": self.position.entry_price,
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"exit": order["price"],
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"qty": order["qty"],
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"pnl_usdc": round(pnl, 8),
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"pnl_pct": round(pnl / (self.position.qty * self.position.entry_price) * 100, 2),
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"entry_time": datetime.fromtimestamp(self.position.opened_at, tz=timezone.utc).isoformat() if self.position.opened_at else None,
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"exit_time": datetime.fromtimestamp(exit_ts, tz=timezone.utc).isoformat(),
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})
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self.position = None
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# BUGFIX: SELL закрыл позицию → остальные SELL ордера-зомби
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# больше не нужны, отменяем.
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self._cancel_open_sells("position closed via SELL fill")
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else:
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# SELL-zombie: ордер заполнился, но позиции уже нет.
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# Не начисляем proceeds (нет BTC), логгируем warning.
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import logging
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logging.getLogger("grid").warning(
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f"[DEMO] SELL-zombie fill @ ${order['price']:,.2f} qty={order['qty']} BTC "
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f"— no position to close, no proceeds credited"
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)
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filled.append(order)
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self.orders = [o for o in self.orders if not o["filled"]]
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return filled
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def check_take_profit(self, current_price: float, take_profit_pct: float) -> bool:
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"""If position PnL >= take_profit_pct, close it."""
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if not self.position:
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return False
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pnl_pct = self.position.pnl_percent(current_price)
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if pnl_pct >= take_profit_pct:
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# Force close at current price
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if self.position.side == "BUY":
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proceeds = self.position.qty * current_price
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self.balance += proceeds
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pnl = proceeds - (self.position.qty * self.position.entry_price)
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exit_ts = time.time()
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self.trade_log.append({
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"side": "TAKE_PROFIT",
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"entry": self.position.entry_price,
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"exit": current_price,
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"qty": self.position.qty,
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"pnl_usdc": round(pnl, 8),
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"pnl_pct": round(pnl_pct, 2),
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"entry_time": datetime.fromtimestamp(self.position.opened_at, tz=timezone.utc).isoformat() if self.position.opened_at else None,
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"exit_time": datetime.fromtimestamp(exit_ts, tz=timezone.utc).isoformat(),
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})
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self.position = None
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# BUGFIX: TP закрыл позицию → SELL-ордера-зомби отменяем
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self._cancel_open_sells("position closed via TAKE_PROFIT")
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return True
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return False
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def get_status(self, current_price: float) -> dict:
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pnl_usdc = 0.0
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pnl_pct = 0.0
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unrealized = 0.0
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if self.position:
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if self.position.side == "BUY":
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unrealized = (current_price - self.position.entry_price) * self.position.qty
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pnl_pct = self.position.pnl_percent(current_price)
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pnl_usdc = unrealized
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return {
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"balance": round(self.balance, 8),
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"position": {
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"side": self.position.side if self.position else None,
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"entry_price": self.position.entry_price if self.position else None,
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"qty": self.position.qty if self.position else None,
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"current_value": round(self.position.current_value(current_price) if self.position else 0.0, 8),
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"unrealized_pnl": round(unrealized, 8),
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"pnl_pct": round(pnl_pct, 2),
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} if self.position else None,
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"open_orders": len(set(o["level_id"] for o in self.orders if not o["filled"])),
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"total_trades": len(self.trade_log),
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"total_pnl": round(sum(t["pnl_usdc"] for t in self.trade_log), 8),
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"last_trade": self.trade_log[-1] if self.trade_log else None,
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}
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