import os
from dataclasses import dataclass
from pathlib import Path

from dotenv import load_dotenv

load_dotenv()

PROJECT_ROOT = Path(__file__).resolve().parents[1]


@dataclass(frozen=True)
class LocalRagConfig:
    data_dir: Path

    @classmethod
    def from_env(cls) -> "LocalRagConfig":
        data_dir = Path(os.getenv("LOCAL_RAG_DATA_DIR", PROJECT_ROOT / "local_rag_data"))
        return cls(data_dir=data_dir)

    @property
    def manifest_path(self) -> Path:
        return self.data_dir / "manifest.json"