"""Common functions for the repopush test runner."""

import os
import pathlib
import shlex

from typing import List, Sequence, Union


PathStr = Union[str, os.PathLike]
PathList = List[PathStr]


def cmdstr(cmd: Sequence[PathStr]) -> str:
    """Build a human-readable string for a command."""
    return " ".join(shlex.quote(str(word)) for word in cmd)


def expected_steps(src: pathlib.Path) -> int:
    """Determine the number of steps that a command is expected to run for."""
    if src.name.startswith("src-deb-"):
        return 4

    if src.name.startswith("src-yum-"):
        arches = [
            name
            for name in (
                path.parent.name
                for path in src.glob("*/repodata")
                if path.is_dir()
            )
            if name != "SRPMS"
        ]
        return 4 + 2 * len(arches)

    raise NotImplementedError(f"Internal error: expected_steps({src!r})")