"""Konfiguracija iz okoline (~/.config/idriz/env se učitava preko systemd EnvironmentFile)."""
import os
from dataclasses import dataclass, field
from pathlib import Path


def _env(name: str, default: str) -> str:
    return os.environ.get(name, default)


@dataclass
class Config:
    openai_api_key: str = field(default_factory=lambda: _env("OPENAI_API_KEY", ""))
    realtime_model: str = field(default_factory=lambda: _env("IDRIZ_REALTIME_MODEL", "gpt-realtime-2.1"))
    text_model: str = field(default_factory=lambda: _env("IDRIZ_TEXT_MODEL", "gpt-5.5"))
    game_model: str = field(default_factory=lambda: _env("IDRIZ_GAME_MODEL", "gpt-4.1-mini"))
    image_model: str = field(default_factory=lambda: _env("IDRIZ_IMAGE_MODEL", "gpt-image-2"))
    transcription_model: str = field(default_factory=lambda: _env("IDRIZ_TRANSCRIPTION_MODEL", "gpt-4o-mini-transcribe"))
    voice: str = field(default_factory=lambda: _env("IDRIZ_VOICE", "cedar"))
    printer: str = field(default_factory=lambda: _env("IDRIZ_PRINTER", "idriz-printer"))
    mic_device: str = field(default_factory=lambda: _env("IDRIZ_MIC_DEVICE", ""))
    speaker_device: str = field(default_factory=lambda: _env("IDRIZ_SPEAKER_DEVICE", ""))
    out_dir: Path = field(default_factory=lambda: Path(_env("IDRIZ_OUT_DIR", str(Path.home() / ".local/share/idriz/out"))))
    max_pages: int = field(default_factory=lambda: int(_env("IDRIZ_MAX_PAGES", "2")))
    dry_run: bool = field(default_factory=lambda: _env("IDRIZ_DRY_RUN", "0") == "1")
    vad_silence_ms: int = field(default_factory=lambda: int(_env("IDRIZ_VAD_SILENCE_MS", "900")))
    mic_gain: float = field(default_factory=lambda: float(_env("IDRIZ_MIC_GAIN", "3.0")))
    vad_threshold: float = field(default_factory=lambda: float(_env("IDRIZ_VAD_THRESHOLD", "0.5")))

    def __post_init__(self) -> None:
        self.out_dir.mkdir(parents=True, exist_ok=True)
        # igra koristi brzi mini model (gpt-4.1-mini) da presuda ne traje dugo;
        # promjenjivo preko IDRIZ_GAME_MODEL
        if not self.game_model:
            self.game_model = "gpt-4.1-mini"


def load() -> Config:
    return Config()