import datetime as dt
from pathlib import Path

import tomlkit

from forge import cli


def test_parse_config_arrays(tmp_path: Path) -> None:
    config_path = tmp_path / "forge.toml"
    config_path.write_text(
        """
copr = ["copr.fedorainfracloud.org/user/repo"]
packages = ["git", "vim"]

[forge]
version = "1.0"
last_switch = ""

[dotfiles]
".bashrc" = ".bashrc"

[options]
backup = true
backup_dir = "backup"
        """.strip()
    )

    config = cli.parse_config(config_path)

    assert config.copr == ["copr.fedorainfracloud.org/user/repo"]
    assert config.packages == ["git", "vim"]
    assert config.dotfiles == {".bashrc": ".bashrc"}
    assert config.options["backup"] is True
    assert config.legacy is False


def test_parse_config_legacy_format(tmp_path: Path) -> None:
    config_path = tmp_path / "forge.toml"
    config_path.write_text(
        """
[packages]
git
vim

[copr]
copr.fedorainfracloud.org/user/repo

[dotfiles]
".bashrc" = ".bashrc"
        """.strip()
    )

    config = cli.parse_config(config_path)

    assert config.packages == ["git", "vim"]
    assert config.copr == ["copr.fedorainfracloud.org/user/repo"]
    assert config.dotfiles == {".bashrc": ".bashrc"}
    assert config.legacy is True


def test_diff_items() -> None:
    added, removed = cli.diff_items(["a", "b"], ["b", "c"])
    assert added == ["a"]
    assert removed == ["c"]


def test_update_last_switch_creates_backup(tmp_path: Path) -> None:
    config_dir = tmp_path
    config_path = config_dir / "forge.toml"
    config_path.write_text(
        """
[forge]
version = "1.0"
last_switch = ""
        """.strip()
    )

    options = {"backup": True, "backup_dir": "backup"}
    cli.update_last_switch(config_path, options)

    doc = tomlkit.parse(config_path.read_text())
    assert isinstance(doc["forge"]["last_switch"], dt.datetime)

    backup_dir = config_dir / "backup"
    backups = list(backup_dir.iterdir())
    assert backups, "expected a backup of forge.toml to be created"
    assert any(path.name.startswith("forge.toml.") for path in backups)