"""challs.txt for the deployment repo: what infra deploys."""
from __future__ import annotations

from .overview import Overview


def render_challs(ov: Overview) -> str:
    """One clone URL per line, for everything that is Testing Ready or beyond
    and not blocked."""
    return "".join(f"{c.repo.ssh_url}\n" for c in ov.testable)


def challs_message(old: str, new: str, path: str) -> str:
    name = lambda u: u.rsplit("/", 1)[-1].removesuffix(".git")
    was, now = set(old.split()), set(new.split())
    parts = [f"+{name(u)}" for u in sorted(now - was)] + [f"-{name(u)}" for u in sorted(was - now)]
    return f"Update {path} from challenge status" + (f": {' '.join(parts)}" if parts else "")