from pathlib import Path
from uuid import uuid4

from fastapi import UploadFile

from app.core.config import settings


class StorageService:
    def __init__(self, base_dir: str) -> None:
        self.base_dir = Path(base_dir)
        self.base_dir.mkdir(parents=True, exist_ok=True)

    async def save_upload(self, file: UploadFile) -> tuple[str, str, str]:
        extension = Path(file.filename or "capture.png").suffix or ".png"
        image_id = str(uuid4())
        stored_name = f"{image_id}{extension}"
        target_path = self.base_dir / stored_name

        content = await file.read()
        target_path.write_bytes(content)
        return image_id, str(target_path), stored_name

    def delete(self, absolute_path: str) -> None:
        target = Path(absolute_path)
        if target.exists():
            target.unlink()


storage_service = StorageService(settings.storage_dir)