class_name PlaylistTest
extends GdUnitTestSuite


func test_add_to_playlist_increases_size():
	Playlist.clear_song_list()
	var initial_size = Playlist.song_object_array.size()
	
	var song_obj = TestHelpers.create_test_song_object()
	Playlist.add_to_playlist(song_obj)
	
	assert_eq(Playlist.song_object_array.size(), initial_size + 1)


func test_get_next_song_returns_correct_song():
	Playlist.clear_song_list()
	
	var song1 = TestHelpers.create_test_song_object(1, "Soundtrack 1", "Song 1")
	var song2 = TestHelpers.create_test_song_object(2, "Soundtrack 2", "Song 2")
	
	Playlist.add_to_playlist(song1)
	Playlist.add_to_playlist(song2)
	Playlist.latest_played_song = 0
	
	var next_song = Playlist.get_next_song()
	
	assert_eq(next_song, song1)


func test_set_latest_played_song_increments():
	Playlist.clear_song_list()
	
	var song1 = TestHelpers.create_test_song_object(1)
	var song2 = TestHelpers.create_test_song_object(2)
	
	Playlist.add_to_playlist(song1)
	Playlist.add_to_playlist(song2)
	Playlist.latest_played_song = 0
	
	Playlist.set_latest_played_song()
	
	assert_eq(Playlist.latest_played_song, 1)


func test_set_latest_played_song_does_not_exceed_bounds():
	Playlist.clear_song_list()
	
	var song1 = TestHelpers.create_test_song_object(1)
	Playlist.add_to_playlist(song1)
	Playlist.latest_played_song = 0
	
	Playlist.set_latest_played_song()
	Playlist.set_latest_played_song()
	
	assert_eq(Playlist.latest_played_song, 0)


func test_get_preloaded_songs_returns_correct_count():
	Playlist.clear_song_list()
	
	var song1 = TestHelpers.create_test_song_object(1)
	var song2 = TestHelpers.create_test_song_object(2)
	var song3 = TestHelpers.create_test_song_object(3)
	
	song1.has_played = true
	song2.has_played = false
	song3.has_played = false
	
	Playlist.add_to_playlist(song1)
	Playlist.add_to_playlist(song2)
	Playlist.add_to_playlist(song3)
	
	assert_eq(Playlist.get_preloaded_songs(), 2)


func test_should_preload_more_songs():
	Playlist.clear_song_list()
	Playlist.number_of_tracks_to_preload = 2
	
	var song1 = TestHelpers.create_test_song_object(1)
	var song2 = TestHelpers.create_test_song_object(2)
	
	song1.has_played = true
	song2.has_played = false
	
	Playlist.add_to_playlist(song1)
	Playlist.add_to_playlist(song2)
	
	assert_true(Playlist.should_preload_more_songs())
	
	var song3 = TestHelpers.create_test_song_object(3)
	Playlist.add_to_playlist(song3)
	
	assert_false(Playlist.should_preload_more_songs())


func test_song_is_answered_sets_flag():
	Playlist.clear_song_list()
	
	var song = TestHelpers.create_test_song_object(1)
	Playlist.add_to_playlist(song)
	Playlist.currently_playing_song = 0
	
	assert_false(song.is_answered)
	
	Playlist.song_is_answered()
	
	assert_true(song.is_answered)


func test_add_point_to_song():
	Playlist.clear_song_list()
	
	var song = TestHelpers.create_test_song_object(1)
	Playlist.add_to_playlist(song)
	Playlist.currently_playing_song = 0
	
	Playlist.add_point(0)
	
	assert_true(song.players_given_point.has(0))


func test_remove_point_from_song():
	Playlist.clear_song_list()
	
	var song = TestHelpers.create_test_song_object(1)
	Playlist.add_to_playlist(song)
	Playlist.currently_playing_song = 0
	
	Playlist.add_point(0)
	Playlist.remove_point(0)
	
	assert_false(song.players_given_point.has(0))


func test_get_song_returns_correct_stream():
	Playlist.clear_song_list()
	
	var expected_stream = TestHelpers.create_mock_audio_stream()
	var song = TestHelpers.create_test_song_object(1)
	song.song = expected_stream
	
	Playlist.add_to_playlist(song)
	
	var retrieved_stream = Playlist.get_song(0)
	
	assert_eq(retrieved_stream, expected_stream)


func test_reset_playlist_clears_all():
	Playlist.clear_song_list()
	
	var song = TestHelpers.create_test_song_object(1)
	Playlist.add_to_playlist(song)
	Playlist.latest_played_song = 1
	Playlist.currently_playing_song = 0
	
	Playlist.reset_playlist()
	
	assert_eq(Playlist.song_object_array.size(), 0)
	assert_eq(Playlist.latest_played_song, 0)
	assert_eq(Playlist.currently_playing_song, -1)


func test_clear_song_list_removes_all():
	Playlist.clear_song_list()
	
	Playlist.add_to_playlist(TestHelpers.create_test_song_object(1))
	Playlist.add_to_playlist(TestHelpers.create_test_song_object(2))
	
	Playlist.clear_song_list()
	
	assert_eq(Playlist.song_object_array.size(), 0)