from __future__ import annotations

from typing import TYPE_CHECKING

from django.utils import autoreload
from watchfiles import Change

from config.dev_autoreload import TussilagoWatchfilesReloader
from config.dev_autoreload import build_project_watch_roots

if TYPE_CHECKING:
    from pathlib import Path

    import pytest


def test_build_project_watch_roots_excludes_firecracker(tmp_path: Path) -> None:
    """Project watch roots should skip firecracker and hidden directories."""
    (tmp_path / "config").mkdir()
    (tmp_path / "control_plane").mkdir()
    (tmp_path / "firecracker").mkdir()
    (tmp_path / ".venv").mkdir()
    (tmp_path / "static").mkdir()

    assert build_project_watch_roots(tmp_path) == (
        tmp_path / "config",
        tmp_path / "control_plane",
        tmp_path / "static",
    )


def test_reloader_replaces_repo_root_with_child_dirs(
    tmp_path: Path,
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """Repo root watch should be split so firecracker is excluded."""
    (tmp_path / "config").mkdir()
    (tmp_path / "control_plane").mkdir()
    (tmp_path / "firecracker").mkdir()
    (tmp_path / "static").mkdir()

    watched_settings = tmp_path / "config" / "settings.py"
    watched_settings.touch()
    firecracker_config = tmp_path / "firecracker" / "vm_config.json"
    firecracker_config.touch()

    monkeypatch.setattr(
        autoreload,
        "sys_path_directories",
        lambda: iter((tmp_path, tmp_path / "config")),
    )

    reloader = TussilagoWatchfilesReloader(project_root=tmp_path)
    roots = reloader.watched_roots((tmp_path / "manage.py", watched_settings))

    assert tmp_path not in roots
    assert tmp_path / "config" in roots
    assert tmp_path / "control_plane" in roots
    assert tmp_path / "static" in roots
    assert tmp_path / "firecracker" not in roots
    assert reloader.file_filter(Change.added, str(firecracker_config)) is False