"""
Server-wide configuration loaded from .env via Pydantic Settings.
All modules import `settings` from here — never read env vars directly.
"""

from pydantic import Field
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    # LLM backend
    llm_base_url: str = Field(description="OpenAI-compatible LLM backend base URL")
    llm_api_key: str = Field(default="not-needed", description="API key for the LLM backend")

    # Default models (can be overridden per-session or per-bot)
    default_bot_model: str = Field(description="Default model used for bot turns")
    default_orchestrator_model: str = Field(description="Model used for orchestrator calls")

    # Server limits
    max_bots_per_session: int = Field(default=10, description="Hard cap on bots per session")
    session_ttl_default: int = Field(default=3600, description="Default idle TTL in seconds")

    # Debug
    debug: bool = Field(default=False, description="Enable debug mode server-wide")

    model_config = {"env_file": ".env", "env_file_encoding": "utf-8"}


settings = Settings()  # type: ignore[call-arg]