creat

Signed-off-by: TIANHE <TIANHE@GMAIL.COM>

backend_api_python/app/services/live_trading/symbols.py

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+"""
+Symbol normalization helpers.
+
+Input symbols may come from UI/strategy config in ccxt-like shape:
+- "SOL/USDT:USDT"
+- "SOL/USDT"
+
+We convert them into exchange-specific identifiers.
+"""
+
+from __future__ import annotations
+
+from typing import Tuple
+
+
+def _split_base_quote(symbol: str) -> Tuple[str, str]:
+    s = (symbol or "").strip()
+    if ":" in s:
+        s = s.split(":", 1)[0]
+    if "/" not in s:
+        # Already exchange-specific (best-effort)
+        return s, ""
+    base, quote = s.split("/", 1)
+    return base.strip().upper(), quote.strip().upper()
+
+
+def to_binance_futures_symbol(symbol: str) -> str:
+    base, quote = _split_base_quote(symbol)
+    if not quote:
+        return (symbol or "").replace("/", "").replace(":", "").upper()
+    return f"{base}{quote}"
+
+
+def to_okx_swap_inst_id(symbol: str) -> str:
+    base, quote = _split_base_quote(symbol)
+    if not base or not quote:
+        return symbol
+    # OKX perpetual swap instrument id: BASE-QUOTE-SWAP
+    return f"{base}-{quote}-SWAP"
+
+
+def to_okx_spot_inst_id(symbol: str) -> str:
+    base, quote = _split_base_quote(symbol)
+    if not base or not quote:
+        return symbol
+    return f"{base}-{quote}"
+
+
+def to_bitget_um_symbol(symbol: str) -> str:
+    base, quote = _split_base_quote(symbol)
+    if not quote:
+        return (symbol or "").replace("/", "").replace(":", "").upper()
+    return f"{base}{quote}"
+
+