Fix strptime crash on already-parsed datetime in candles/date endpoint

FastAPI auto-parses date query params into datetime objects, but
parse_date() called strptime() expecting a string. Now handles both.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ariadng

CLAUDE.md

@@ -5,7 +5,7 @@
 MCP server enabling AI assistants to trade on MetaTrader 5 via natural language. Provides both MCP (stdio) and HTTP/REST interfaces.
 
 **Stack**: Python 3.10+ • FastMCP • FastAPI • MetaTrader5 SDK • Pandas • Pydantic • pytest
-**Version**: 0.5.0 (Beta)
+**Version**: 0.5.1 (Beta)
 **Repo**: https://github.com/ariadng/metatrader-mcp-server
 
 ---

README.md

@@ -742,7 +742,7 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 
 ## 📊 Project Stats
 
-- **Version**: 0.5.0
+- **Version**: 0.5.1
 - **Python**: 3.10+
 - **License**: MIT
 - **Status**: Active Development

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "metatrader-mcp-server"
-version = "0.5.0"
+version = "0.5.1"
 authors = [
   { name = "Aria Dhanang", email = "ariadng@gmail.com" },
 ]

src/metatrader_client/market/get_candles_by_date.py

@@ -1,4 +1,4 @@
-from typing import Optional
+from typing import Optional, Union
 import pandas as pd
 from datetime import datetime, timezone, timedelta
 import MetaTrader5 as mt5
@@ -10,8 +10,8 @@ def get_candles_by_date(
     connection,
     symbol_name: str,
     timeframe: str,
-    from_date: Optional[str] = None,
-    to_date: Optional[str] = None,
+    from_date: Optional[Union[str, datetime]] = None,
+    to_date: Optional[Union[str, datetime]] = None,
 ) -> pd.DataFrame:
     if not get_symbols(connection, symbol_name):
         raise SymbolNotFoundError(f"Symbol '{symbol_name}' not found")
@@ -21,6 +21,10 @@ def get_candles_by_date(
     from_datetime = None
     to_datetime = None
     def parse_date(date_str, is_to_date=False):
+        if isinstance(date_str, datetime):
+            if date_str.tzinfo is None:
+                return date_str.replace(tzinfo=timezone.utc)
+            return date_str
         for fmt in ("%Y-%m-%d %H:%M", "%Y-%m-%d"):
             try:
                 dt = datetime.strptime(date_str, fmt)

src/metatrader_openapi/config.py

@@ -22,7 +22,7 @@ class Settings(BaseSettings):
     docs_url: str = "/docs"
     redoc_url: str = "/redoc"
     title: str = "MetaTrader MCP API"
-    version: str = "0.5.0"
+    version: str = "0.5.1"
 
     # Load from env vars prefixed with OPENAPI_
     model_config = SettingsConfigDict(env_prefix="OPENAPI_")