from __future__ import annotations

from pathlib import Path

from tenbackward.state import load_posted, posted_path, save_posted


def test_load_posted_creates_empty_when_missing(tmp_path: Path) -> None:
    state = load_posted(tmp_path)
    assert state == {}


def test_round_trip_persists(tmp_path: Path) -> None:
    state = {"post-1": {"posted_at": "2024-01-01T00:00:00Z"}}
    save_posted(tmp_path, state)

    assert posted_path(tmp_path).exists()
    again = load_posted(tmp_path)
    assert again == state


def test_load_posted_handles_corrupt_file(tmp_path: Path) -> None:
    posted_path(tmp_path).parent.mkdir(parents=True, exist_ok=True)
    posted_path(tmp_path).write_text("not-json")
    assert load_posted(tmp_path) == {}


def test_save_posted_creates_parent_dirs(tmp_path: Path) -> None:
    nested = tmp_path / "deep" / "data"
    save_posted(nested, {"x": 1})
    assert posted_path(nested).exists()