import os
from dataclasses import dataclass


@dataclass(frozen=True)
class MemoirImageSettings:
    enabled: bool
    max_per_chapter: int
    provider: str
    default_style: str
    default_size: str
    poll_interval_seconds: int
    max_attempts: int
    liblib_template_uuid: str

    @classmethod
    def from_env(cls) -> "MemoirImageSettings":
        return cls(
            enabled=os.getenv("MEMOIR_IMAGE_ENABLED", "").lower() in {"1", "true", "yes"},
            max_per_chapter=int(os.getenv("MEMOIR_IMAGE_MAX_PER_CHAPTER", "2")),
            provider=os.getenv("MEMOIR_IMAGE_PROVIDER", "liblib"),
            default_style=os.getenv("MEMOIR_IMAGE_STYLE_DEFAULT", "watercolor"),
            default_size=os.getenv("MEMOIR_IMAGE_SIZE_DEFAULT", "1024x1024"),
            poll_interval_seconds=int(os.getenv("MEMOIR_IMAGE_POLL_INTERVAL", "3")),
            max_attempts=int(os.getenv("MEMOIR_IMAGE_MAX_ATTEMPTS", "60")),
            liblib_template_uuid=os.getenv(
                "LIBLIB_TEMPLATE_UUID", "5d7e67009b344550bc1aa6ccbfa1d7f4"
            ),
        )