import subprocess
import tempfile
import shutil
from pathlib import Path


def fetch_path(repo_url: str, repo_path: str, dest: Path, ref: str = "HEAD", force: bool = False):
    with tempfile.TemporaryDirectory(prefix="jeaddons-") as tmp:
        tmp_path = Path(tmp)
        subprocess.check_call(
            ["git", "clone", "--filter=blob:none", "--no-checkout", "--depth", "1", repo_url, str(tmp_path)]
        )
        subprocess.check_call(["git", "-C", str(tmp_path), "sparse-checkout", "init", "--cone"])
        subprocess.check_call(["git", "-C", str(tmp_path), "sparse-checkout", "set", repo_path])
        subprocess.check_call(["git", "-C", str(tmp_path), "checkout", ref])

        src = tmp_path / repo_path
        if not src.exists():
            raise FileNotFoundError(repo_path)

        target = dest / src.name
        if target.exists():
            if not force:
                raise FileExistsError(target)
            if target.is_dir():
                shutil.rmtree(target)
            else:
                target.unlink()

        if src.is_dir():
            shutil.copytree(src, target)
            return target

        shutil.copy2(src, target)
        return target