"""submit_if_changed: the shared skip-when-unchanged logic behind the CLI's
--if-changed flag and the worker scheduler's periodic ping (no network —
submit_all/url_signature are stubbed)."""
import indexnow


def _ok(total=3):
    return {"submitted": total, "total": total, "batches": 1, "statuses": [200]}


def test_skips_when_url_set_unchanged(monkeypatch, tmp_path):
    monkeypatch.setattr(indexnow, "_STATE_PATH", str(tmp_path / "state.txt"))
    monkeypatch.setattr(indexnow, "url_signature", lambda: "same-sig")
    (tmp_path / "state.txt").write_text("same-sig")

    def boom(*a, **k):
        raise AssertionError("must not submit when the URL set is unchanged")

    monkeypatch.setattr(indexnow, "submit_all", boom)
    assert indexnow.submit_if_changed("https://example.org") is None


def test_submits_and_persists_state_when_changed(monkeypatch, tmp_path):
    state = tmp_path / "state.txt"
    monkeypatch.setattr(indexnow, "_STATE_PATH", str(state))
    monkeypatch.setattr(indexnow, "url_signature", lambda: "new-sig")
    state.write_text("old-sig")

    calls = []
    monkeypatch.setattr(indexnow, "submit_all", lambda base, **kw: calls.append(base) or _ok())
    result = indexnow.submit_if_changed("https://example.org")
    assert calls == ["https://example.org"]
    assert result["submitted"] == result["total"] == 3
    assert state.read_text() == "new-sig"


def test_partial_failure_does_not_persist_state(monkeypatch, tmp_path):
    """A partial/failed submission must leave the prior state in place so the
    next attempt retries, rather than silently giving up on the missed URLs."""
    state = tmp_path / "state.txt"
    monkeypatch.setattr(indexnow, "_STATE_PATH", str(state))
    monkeypatch.setattr(indexnow, "url_signature", lambda: "new-sig")
    state.write_text("old-sig")

    monkeypatch.setattr(indexnow, "submit_all",
                        lambda base, **kw: {"submitted": 1, "total": 3, "batches": 1, "statuses": [429]})
    result = indexnow.submit_if_changed("https://example.org")
    assert result["submitted"] < result["total"]
    assert state.read_text() == "old-sig"


def test_default_base_url_falls_back_to_env(monkeypatch, tmp_path):
    monkeypatch.setattr(indexnow, "_STATE_PATH", str(tmp_path / "state.txt"))
    monkeypatch.setattr(indexnow, "url_signature", lambda: "sig")
    monkeypatch.setenv("THERMOGRAPH_BASE_URL", "https://from-env.example")
    calls = []
    monkeypatch.setattr(indexnow, "submit_all", lambda base, **kw: calls.append(base) or _ok())
    indexnow.submit_if_changed()
    assert calls == ["https://from-env.example"]