"""Configuration loaded from environment variables / .env."""

from __future__ import annotations

from pydantic import Field
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    """Settings for the homey-mcp server.

    Values are read from environment variables (prefix ``HOMEY_``) or a
    local ``.env`` file.
    """

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

    host: str = Field(..., description="IP or hostname of the Homey Pro.")
    token: str = Field(..., description="Personal Access Token (Bearer).")
    scheme: str = Field("http", description="http or https.")
    port: int | None = Field(
        None,
        description="Optional TCP port (e.g. 4859 when Homey runs in a container).",
    )
    timeout: float = Field(10.0, description="HTTP timeout in seconds.")
    event_buffer: int = Field(200, description="Max realtime events to retain.")
    realtime: bool = Field(True, description="Enable Socket.IO realtime events.")

    @property
    def base_url(self) -> str:
        if self.port is None:
            return f"{self.scheme}://{self.host}"
        return f"{self.scheme}://{self.host}:{self.port}"


def load_settings() -> Settings:
    return Settings()  # type: ignore[call-arg]