from pathlib import Path
from unittest.mock import MagicMock

import pytest

import croaker.playlist
import croaker.path

@pytest.fixture(autouse=True)
def mock_env(monkeypatch):
    fixtures = Path(__file__).parent / 'fixtures'
    monkeypatch.setenv('CROAKER_ROOT', str(fixtures))
    monkeypatch.setenv('MEDIA_GLOB', '*.mp3,*.foo,*.bar')


def test_playlist_loading():
    pl = croaker.playlist.Playlist(name='test_playlist')
    path = str(pl.path)
    tracks = [str(t) for t in pl.tracks]

    assert path == str(croaker.path.playlist_root() / pl.name)
    assert pl.name == 'test_playlist'
    assert tracks[0] == f"{path}/_theme.mp3"
    assert f"{path}/one.mp3" in tracks
    assert f"{path}/two.mp3" in tracks
    assert f"{path}/one.foo" in tracks
    assert f"{path}/one.baz" not in tracks


@pytest.mark.parametrize('paths, make_theme, expected_count', [
    (['test_playlist'], True, 4),
    (['test_playlist'], False, 4),
    (['test_playlist', 'sources/one.mp3'], True, 5),
    (['test_playlist', 'sources/one.mp3'], False, 5),
])
def test_playlist_creation(monkeypatch, paths, make_theme, expected_count):
    new_symlinks = []

    def symlink(target):
        new_symlinks.append(target)

    pl = croaker.playlist.Playlist(name='foo')
    monkeypatch.setattr(croaker.playlist.Path, 'unlink', MagicMock())
    monkeypatch.setattr(croaker.playlist.Path, 'symlink_to', MagicMock(side_effect=symlink))
    monkeypatch.setattr(croaker.playlist.Path, 'mkdir', MagicMock())

    pl.add([croaker.path.playlist_root() / p for p in paths], make_theme)
    assert len(new_symlinks) == expected_count