"""Configuration management for Steward."""

from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    """Application settings loaded from environment variables or .env file."""

    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")

    # Telegram
    telegram_bot_token: str = ""
    telegram_allowed_user_ids: list[int] = []

    # LLM (OpenAI-compatible)
    openai_api_key: str = ""
    openai_base_url: str = "https://api.openai.com/v1"
    openai_model: str = "gpt-4o"
    openai_system_prompt: str = (
        "You are Steward, a persistent, trustworthy AI-assisted personal operations platform. "
        "You reduce cognitive load by observing, remembering, planning, and proposing actions. "
        "You are conservative, transparent, and policy-aware. "
        "Always explain your reasoning."
    )

    # Analysis / proposal worker
    analysis_target_url: str = ""
    analysis_target_api_key: str = ""
    analysis_cron_hour: int = 8
    analysis_cron_minute: int = 0

    # Thread memory
    thread_memory_path: str = "thread_memory.json"

    # MCP / OpenAPI tool server (open-webui/openapi-servers compatible)
    # Set MCP_SERVER_URL to enable tool calling. The service fetches
    # /openapi.json from this URL to discover available tools.
    mcp_server_url: str = ""
    mcp_server_api_key: str = ""


def get_settings() -> Settings:
    """Return application settings singleton."""
    return Settings()