from __future__ import annotations
"""
Central configuration for STK-MCP.
Values can be overridden via environment variables prefixed with `STK_MCP_`.
For example: `STK_MCP_DEFAULT_PORT=9000`.
"""
from pydantic_settings import BaseSettings, SettingsConfigDict
class StkConfig(BaseSettings):
"""STK-MCP configuration.
Environment variables use the `STK_MCP_` prefix, e.g., `STK_MCP_DEFAULT_PORT`.
"""
# Physical constants / domain
earth_radius_km: float = 6378.137
# Scenario defaults
default_scenario_name: str = "MCP_STK_Scenario"
default_start_time: str = "20 Jan 2020 17:00:00.000"
default_duration_hours: float = 48.0
# Server defaults
default_host: str = "127.0.0.1"
default_port: int = 8765
# Logging
log_level: str = "INFO"
model_config = SettingsConfigDict(
env_prefix="STK_MCP_",
extra="ignore",
)
def get_config() -> StkConfig:
"""Return a cached settings instance."""
# pydantic-settings already caches by default, but we can wrap for clarity
return StkConfig() # type: ignore[call-arg]
