from pathlib import Path

from hermes_cli import hf_space_update


def test_pick_target_ref_defaults_to_latest_tag(monkeypatch):
    monkeypatch.setattr(hf_space_update, "list_remote_tags", lambda *_args, **_kwargs: ["v2026.4.16", "v2026.4.13"])

    assert hf_space_update.pick_target_ref(None) == "v2026.4.16"


def test_pick_target_ref_preserves_explicit_ref():
    assert hf_space_update.pick_target_ref("v2026.4.8") == "v2026.4.8"


def test_apply_space_repo_update_writes_ref_and_pushes(monkeypatch, tmp_path):
    repo_dir = tmp_path / "repo"
    docker_dir = repo_dir / "docker"
    docker_dir.mkdir(parents=True)
    ref_file = docker_dir / "HERMES_UPSTREAM_REF"
    ref_file.write_text("v2026.4.13\n", encoding="utf-8")

    calls = []

    def fake_run(cmd, **kwargs):
        calls.append((cmd, kwargs))
        if cmd[:2] == ["git", "clone"]:
            return None
        if cmd[:3] == ["git", "config", "user.email"]:
            return None
        if cmd[:3] == ["git", "config", "user.name"]:
            return None
        if cmd[:2] == ["git", "add"]:
            return None
        if cmd[:2] == ["git", "commit"]:
            return None
        if cmd[:2] == ["git", "push"]:
            return None
        if cmd[:3] == ["git", "rev-parse", "HEAD"]:
            class Result:
                stdout = "abc123\n"
            return Result()
        raise AssertionError(f"unexpected command: {cmd}")

    monkeypatch.setattr(hf_space_update, "run", fake_run)
    monkeypatch.setattr(hf_space_update, "clone_space_repo", lambda *_args, **_kwargs: repo_dir)

    commit_sha = hf_space_update.apply_space_repo_update(
        space_id="cjovs/HermesAgent",
        token="secret",
        target_ref="v2026.4.16",
    )

    assert commit_sha == "abc123"
    assert ref_file.read_text(encoding="utf-8") == "v2026.4.16\n"
    assert any(cmd[:2] == ["git", "push"] for cmd, _ in calls)