"""Tests for the Backup integration."""
from pathlib import Path
from unittest.mock import MagicMock, patch

import pytest

from homeassistant.components.backup import BackupManager
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import HomeAssistantError

from .common import TEST_BACKUP


async def test_constructor(hass: HomeAssistant) -> None:
    """Test BackupManager constructor."""
    manager = BackupManager(hass)
    assert manager.backup_dir.as_posix() == hass.config.path("backups")


async def test_load_backups(hass: HomeAssistant) -> None:
    """Test loading backups."""
    manager = BackupManager(hass)
    with patch("pathlib.Path.glob", return_value=[TEST_BACKUP.path]), patch(
        "tarfile.open", return_value=MagicMock()
    ), patch(
        "json.loads",
        return_value={
            "slug": TEST_BACKUP.slug,
            "name": TEST_BACKUP.name,
            "date": TEST_BACKUP.date,
        },
    ), patch(
        "pathlib.Path.stat", return_value=MagicMock(st_size=TEST_BACKUP.size)
    ):
        await manager.load_backups()
    backups = await manager.get_backups()
    assert backups == {TEST_BACKUP.slug: TEST_BACKUP}


async def test_load_backups_with_exception(
    hass: HomeAssistant,
    caplog: pytest.LogCaptureFixture,
) -> None:
    """Test loading backups with exception."""
    manager = BackupManager(hass)
    with patch("pathlib.Path.glob", return_value=[TEST_BACKUP.path]), patch(
        "tarfile.open", side_effect=OSError("Test ecxeption")
    ):
        await manager.load_backups()
    backups = await manager.get_backups()
    assert f"Unable to read backup {TEST_BACKUP.path}: Test ecxeption" in caplog.text
    assert backups == {}


async def test_removing_backup(
    hass: HomeAssistant,
    caplog: pytest.LogCaptureFixture,
) -> None:
    """Test removing backup."""
    manager = BackupManager(hass)
    manager.backups = {TEST_BACKUP.slug: TEST_BACKUP}
    manager.loaded = True

    with patch("pathlib.Path.exists", return_value=True):
        await manager.remove_backup(TEST_BACKUP.slug)
    assert "Removed backup located at" in caplog.text


async def test_removing_non_existing_backup(
    hass: HomeAssistant,
    caplog: pytest.LogCaptureFixture,
) -> None:
    """Test removing not existing backup."""
    manager = BackupManager(hass)

    await manager.remove_backup("non_existing")
    assert "Removed backup located at" not in caplog.text


async def test_getting_backup_that_does_not_exist(
    hass: HomeAssistant,
    caplog: pytest.LogCaptureFixture,
):
    """Test getting backup that does not exist."""
    manager = BackupManager(hass)
    manager.backups = {TEST_BACKUP.slug: TEST_BACKUP}
    manager.loaded = True

    with patch("pathlib.Path.exists", return_value=False):
        backup = await manager.get_backup(TEST_BACKUP.slug)
        assert backup is None

        assert (
            f"Removing tracked backup ({TEST_BACKUP.slug}) that "
            f"does not exists on the expected path {TEST_BACKUP.path}" in caplog.text
        )


async def test_generate_backup_when_backing_up(hass: HomeAssistant) -> None:
    """Test generate backup."""
    manager = BackupManager(hass)
    manager.backing_up = True
    with pytest.raises(HomeAssistantError, match="Backup already in progress"):
        await manager.generate_backup()


async def test_generate_backup(
    hass: HomeAssistant,
    caplog: pytest.LogCaptureFixture,
) -> None:
    """Test generate backup."""
    manager = BackupManager(hass)
    manager.loaded = True

    def _mock_iterdir(path: Path) -> list[Path]:
        if not path.name.endswith("testing_config"):
            return []
        return [
            Path("test.txt"),
            Path(".DS_Store"),
            Path(".storage"),
        ]

    with patch("tarfile.open", MagicMock()) as mocked_tarfile, patch(
        "pathlib.Path.iterdir", _mock_iterdir
    ), patch("pathlib.Path.stat", MagicMock(st_size=123)), patch(
        "pathlib.Path.is_file", lambda x: x.name != ".storage"
    ), patch(
        "pathlib.Path.is_dir",
        lambda x: x.name == ".storage",
    ), patch(
        "pathlib.Path.exists",
        lambda x: x != manager.backup_dir,
    ), patch(
        "pathlib.Path.is_symlink",
        lambda _: False,
    ), patch(
        "pathlib.Path.mkdir",
        MagicMock(),
    ), patch(
        "homeassistant.components.backup.manager.json_util.save_json"
    ) as mocked_json_util, patch(
        "homeassistant.components.backup.manager.HAVERSION",
        "2025.1.0",
    ):
        await manager.generate_backup()

        assert mocked_json_util.call_count == 1
        assert mocked_json_util.call_args[0][1]["homeassistant"] == {
            "version": "2025.1.0"
        }

        assert (
            manager.backup_dir.as_posix()
            in mocked_tarfile.call_args_list[0].kwargs["name"]
        )

    assert "Generated new backup with slug " in caplog.text
    assert "Creating backup directory" in caplog.text