extends MainWindowTestSuite
## Soundtrack covers on the statistics cards, in the popup and next to the answer in the
## quiz, loaded for the cards on screen; changing a cover from the popup; and editing a
## soundtrack's alternative names, which search then finds it by.

const STATISTICS: Array[Dictionary] = [
	{"soundtrack_uuid": "st-1", "soundtrack_name": "Chrono Trigger", "soundtrack_played": 5,
		"cover_modified": 100, "alternative_names": [], "songs": [
			{"song_name": "Corridors of Time", "times_played": 1},
		]},
	{"soundtrack_uuid": "st-2", "soundtrack_name": "Terranigma", "soundtrack_played": 0,
		"songs": []},
]

var _view: StatisticsView
var _popup: SoundtrackStatsPopup
var _png: PackedByteArray


func _before_window_starts() -> void:
	_server.respond_json("/statistics/soundtracks", STATISTICS)
	var image: Image = Image.create(6, 8, false, Image.FORMAT_RGB8)
	_png = image.save_png_to_buffer()
	_server.respond_bytes("/soundtracks/st-1/cover", _png)
	# The soundtrack list tells the quiz which soundtracks have covers
	_server.respond_json("/soundtracks", [
		{"uuid": "st-1", "name": "Chrono Trigger", "cover_modified": 100},
		{"uuid": "st-2", "name": "Terranigma"},
	])
	_next_song_is({"SongNo": 0, "Soundtrack": "Chrono Trigger", "SoundtrackUuid": "st-1",
			"Song": "Corridors of Time"})


func before_test() -> void:
	# Covers are kept next to the settings, which the tests keep in a folder of their own
	OS.set_environment(Settings.CONFIG_DIR_ENV, create_temp_dir("covers_%d" % randi()))
	await super()
	_view = _window.get_node("StatisticsView")
	_popup = _window.get_node("SoundtrackStatsPopup")


func _open_statistics() -> void:
	_window.show_tab(&"statistics")
	await _runner.simulate_frames(3)


func _card(soundtrack_name: String) -> SoundtrackCard:
	for card: SoundtrackCard in _view.cards:
		if card.soundtrack.soundtrack_name == soundtrack_name:
			return card
	return null


func test_card_shows_its_cover() -> void:
	await _open_statistics()

	var card: SoundtrackCard = _card("Chrono Trigger")
	assert_object(card.cover_picture.texture).is_not_null()
	assert_bool(card.cover_placeholder.visible).is_false()


func test_card_without_a_cover_shows_initials_and_asks_nothing() -> void:
	await _open_statistics()

	var card: SoundtrackCard = _card("Terranigma")
	assert_object(card.cover_picture.texture).is_null()
	assert_bool(card.cover_placeholder.visible).is_true()
	assert_str(card.cover_placeholder.text).is_equal("T")
	assert_int(_server.count("/soundtracks/st-2/cover")).is_equal(0)


func test_cover_missing_on_the_server_keeps_the_initials() -> void:
	_server.respond_bytes("/soundtracks/st-1/cover", PackedByteArray(), 404)

	await _open_statistics()

	assert_bool(_card("Chrono Trigger").cover_placeholder.visible).is_true()
	assert_str(_card("Chrono Trigger").cover_placeholder.text).is_equal("CT")


func test_covers_load_for_cards_on_screen_as_they_scroll_in() -> void:
	var many: Array[Dictionary] = []
	for i: int in 40:
		many.append({"soundtrack_uuid": "many-%02d" % i, "soundtrack_name": "Game %02d" % i,
				"soundtrack_played": 1, "cover_modified": 100, "songs": []})
		_server.respond_bytes("/soundtracks/many-%02d/cover" % i, _png)
	_server.respond_json("/statistics/soundtracks", many)

	await _open_statistics()

	var asked: Callable = func() -> int:
		return _server.requested_paths.filter(
				func(path: String) -> bool: return path.begins_with("/soundtracks/many-")).size()
	var on_screen: int = asked.call()
	assert_int(on_screen).is_greater(0)
	assert_int(on_screen).is_less(40)

	var scroll_bar: VScrollBar = _view.card_scroll.get_v_scroll_bar()
	scroll_bar.value = scroll_bar.max_value
	await _runner.simulate_frames(2)

	assert_int(asked.call()).is_greater(on_screen)


func test_popup_shows_the_cover_large() -> void:
	await _open_statistics()

	_popup.show_soundtrack(_card("Chrono Trigger").soundtrack)

	assert_object(_popup.cover_picture.texture).is_not_null()
	assert_bool(_popup.cover_placeholder.visible).is_false()
	assert_str(_popup.names_label.text).is_equal("No other names yet")


func test_editing_names_saves_them_and_search_finds_the_new_name() -> void:
	_server.respond_json("/soundtracks/st-1/alternative-names", {"uuid": "st-1",
			"name": "Chrono Trigger", "alternative_names": ["CT", "クロノ・トリガー"]})
	await _open_statistics()
	_popup.show_soundtrack(_card("Chrono Trigger").soundtrack)

	_popup.edit_names()
	assert_bool(_popup.names_editor.visible).is_true()
	_popup.new_name_field.text = "CT"
	_popup.add_name()
	_popup.new_name_field.text = "クロノ・トリガー"
	_popup.save_names()

	var index: int = _server.requested_paths.find("/soundtracks/st-1/alternative-names")
	assert_int(index).is_not_equal(-1)
	assert_int(_server.requested_methods[index]).is_equal(HTTPClient.METHOD_PUT)
	var body: Dictionary = JSON.parse_string(_server.requested_bodies[index])
	assert_array(body.names).contains_exactly(["CT", "クロノ・トリガー"])
	assert_bool(_popup.names_editor.visible).is_false()
	assert_str(_popup.names_label.text).is_equal("CT, クロノ・トリガー")

	_view.search_field.text = "クロノ"
	_view.apply_filter()
	var shown: Array = _view.cards.filter(func(card: SoundtrackCard) -> bool: return card.visible)
	assert_array(shown.map(func(card: SoundtrackCard) -> String:
			return card.soundtrack.soundtrack_name)).contains_exactly(["Chrono Trigger"])


func test_editor_skips_empty_repeated_and_own_names() -> void:
	await _open_statistics()
	_popup.show_soundtrack(_card("Chrono Trigger").soundtrack)
	_popup.edit_names()

	for name: String in ["  ", "CT", "ct", "Chrono Trigger"]:
		_popup.new_name_field.text = name
		_popup.add_name()

	assert_int(_popup.editor_names.get_child_count()).is_equal(1)


func test_removing_a_name_in_the_editor() -> void:
	await _open_statistics()
	_popup.show_soundtrack(_card("Chrono Trigger").soundtrack)
	_popup.edit_names()
	_popup.new_name_field.text = "CT"
	_popup.add_name()

	_popup.remove_name("CT")

	assert_int(_popup.editor_names.get_child_count()).is_equal(0)


func test_failed_save_keeps_the_editor_open() -> void:
	_server.respond_json("/soundtracks/st-1/alternative-names", {}, 500)
	await _open_statistics()
	_popup.show_soundtrack(_card("Chrono Trigger").soundtrack)
	_popup.edit_names()
	_popup.new_name_field.text = "CT"

	_popup.save_names()

	assert_bool(_popup.names_editor.visible).is_true()
	assert_bool(_popup.editor_status.visible).is_true()
	assert_bool(_popup.save_names_button.disabled).is_false()


func test_search_popup_finds_soundtracks_by_alternative_names() -> void:
	_server.respond_json("/soundtracks", [
		{"uuid": "st-1", "name": "Chrono Trigger", "alternative_names": ["CT"]},
		{"uuid": "st-2", "name": "Terranigma", "alternative_names": []},
	])
	var search: SearchPopup = _window.get_node("SearchPopup")
	search.get_list_of_soundtracks()
	search.open()

	search.search_field.text = "ct"
	search.search()

	assert_array(search.shown_names()).contains(["Chrono Trigger"])
	var row: PanelContainer = search.search_results.get_child(0)
	assert_str((row.get_child(0) as RichTextLabel).get_parsed_text()).contains("CT")


func _open_cover_menu() -> void:
	await _open_statistics()
	_popup.show_soundtrack(_card("Chrono Trigger").soundtrack)
	_popup.change_cover()


# The server's answer for the soundtrack once its cover changed
func _cover_time_becomes(modified: int) -> void:
	_server.respond_json("/soundtracks/st-1", {"uuid": "st-1", "name": "Chrono Trigger",
			"cover_modified": modified, "songs": []})


func _picture_file(bytes: PackedByteArray) -> String:
	var path: String = create_temp_dir("pictures_%d" % randi()).path_join("cover.jpg")
	var file: FileAccess = FileAccess.open(path, FileAccess.WRITE)
	file.store_buffer(bytes)
	file.close()
	return path


func _downloads(path: String) -> int:
	var count: int = 0
	for i: int in _server.requested_paths.size():
		if _server.requested_paths[i] == path \
				&& _server.requested_methods[i] == HTTPClient.METHOD_GET:
			count += 1
	return count


func _now_playing() -> NowPlaying:
	return _quiz.get_node("NowPlaying")


func test_cover_menu_opens_in_place_of_the_songs() -> void:
	await _open_cover_menu()

	assert_bool(_popup.cover_editor.visible).is_true()
	assert_bool(_popup.song_scroll.visible).is_false()
	assert_bool(_popup.edit_names_button.disabled).is_true()
	assert_bool(_popup.remove_cover_button.disabled).is_false()

	_popup.stop_editing()

	assert_bool(_popup.cover_editor.visible).is_false()
	assert_bool(_popup.song_scroll.visible).is_true()


func test_soundtrack_without_a_cover_has_nothing_to_remove() -> void:
	await _open_statistics()
	_popup.show_soundtrack(_card("Terranigma").soundtrack)

	_popup.change_cover()

	assert_bool(_popup.remove_cover_button.disabled).is_true()


func test_uploaded_picture_becomes_the_cover() -> void:
	var bytes: PackedByteArray = FileAccess.get_file_as_bytes(
			"res://tests/data/covers/cover_0.jpg")
	_cover_time_becomes(200)
	await _open_cover_menu()

	_popup.upload_picture(_picture_file(bytes))

	var index: int = _server.requested_methods.find(HTTPClient.METHOD_PUT)
	assert_str(_server.requested_paths[index]).is_equal("/soundtracks/st-1/cover")
	assert_array(_server.requested_raw_bodies[index]).is_equal(bytes)
	assert_array(_server.requested_headers[index]).contains(["Content-Type: image/jpeg"])
	# The new cover is downloaded again for the popup and the card
	assert_int(_card("Chrono Trigger").soundtrack.cover_modified).is_equal(200)
	await _runner.simulate_frames(2)
	# Downloaded once more, for the popup and the card together
	assert_int(_downloads("/soundtracks/st-1/cover")).is_equal(2)
	assert_object(_card("Chrono Trigger").cover_picture.texture).is_not_null()
	assert_str(_popup.cover_status.text).is_equal("The new cover is saved.")


func test_file_that_is_not_a_picture_is_not_uploaded() -> void:
	await _open_cover_menu()

	_popup.upload_picture(_picture_file("not a picture".to_utf8_buffer()))

	assert_int(_server.requested_methods.count(HTTPClient.METHOD_PUT)).is_equal(0)
	assert_str(_popup.cover_status.text).contains("JPEG, PNG and WebP")


func test_cover_picked_by_id() -> void:
	_server.respond_bytes("/soundtracks/st-1/cover/source", PackedByteArray(), 204)
	_cover_time_becomes(300)
	await _open_cover_menu()

	_popup.cover_source_button.select(1)
	_popup.cover_id_field.text = " 21 "
	_popup.use_cover_source()

	var index: int = _server.requested_paths.find("/soundtracks/st-1/cover/source")
	assert_int(_server.requested_methods[index]).is_equal(HTTPClient.METHOD_PUT)
	var body: Dictionary = JSON.parse_string(_server.requested_bodies[index])
	assert_str(body.source).is_equal("anilist")
	assert_str(body.id).is_equal("21")
	assert_int(_popup.soundtrack.cover_modified).is_equal(300)


func test_no_id_asks_nothing() -> void:
	await _open_cover_menu()

	_popup.use_cover_source()

	assert_int(_server.count("/soundtracks/st-1/cover/source")).is_equal(0)


func test_removed_cover_shows_the_initials() -> void:
	_cover_time_becomes(0)
	await _open_cover_menu()

	_popup.remove_cover()

	var index: int = _server.requested_methods.find(HTTPClient.METHOD_DELETE)
	assert_str(_server.requested_paths[index]).is_equal("/soundtracks/st-1/cover")
	assert_bool(_popup.cover_placeholder.visible).is_true()
	assert_bool(_card("Chrono Trigger").cover_placeholder.visible).is_true()
	assert_bool(FileAccess.file_exists(CoverCache.folder().path_join("st-1"))).is_false()
	assert_bool(_popup.remove_cover_button.disabled).is_true()


func test_refused_change_shows_the_servers_reason() -> void:
	_server.respond_json("/soundtracks/st-1/cover/source",
			{"error": "covers are not enabled on this server"}, 503)
	await _open_cover_menu()
	_popup.cover_id_field.text = "21"

	_popup.use_cover_source()

	assert_str(_popup.cover_status.text).is_equal(
			"Could not change the cover: covers are not enabled on this server.")
	assert_bool(_popup.use_source_button.disabled).is_false()


func test_answer_shows_the_soundtracks_cover() -> void:
	await _play_first_song()

	assert_bool(_now_playing().has_cover()).is_false()

	_press("SongControls/ShowAnswerButton")

	assert_bool(_now_playing().has_cover()).is_true()
	await _runner.simulate_frames(1)
	# The cover sits just left of the titles, and the two are centered together
	var area: Rect2 = _now_playing().get_global_rect()
	var cover: Rect2 = _now_playing().cover_frame.get_global_rect()
	var titles: Rect2 = _now_playing().titles.get_global_rect()
	assert_float(titles.position.x - cover.end.x).is_equal(32.0)
	assert_float(absf((cover.position.x - area.position.x) - (area.end.x - titles.end.x))) \
			.is_less_equal(1.0)
	# Up and down, the cover is centered between the top bar and the song list, and the
	# titles on the cover
	assert_float(absf((cover.position.y - area.position.y) - (area.end.y - cover.end.y))) \
			.is_less_equal(1.0)
	var text_middle: float = (_now_playing().soundtrack_label.get_global_rect().position.y
			+ _now_playing().song_label.get_global_rect().end.y) / 2.0
	assert_float(absf(text_middle - cover.get_center().y)).is_less_equal(1.0)


func test_answer_without_a_cover_shows_only_the_titles() -> void:
	_view.covers.set_cover_times({"st-1": 0})
	await _play_first_song()

	_press("SongControls/ShowAnswerButton")

	assert_bool(_now_playing().has_cover()).is_false()
	assert_int(_server.count("/soundtracks/st-1/cover")).is_equal(0)


func test_next_song_hides_the_cover_until_its_answer() -> void:
	await _play_first_song()
	_press("SongControls/ShowAnswerButton")

	_press("SongControls/NextButton")
	# The playing song is stopped first, which takes half a second
	await await_millis(700)

	assert_int(Playlist.currently_playing_song).is_equal(1)
	assert_bool(_now_playing().has_cover()).is_false()


func test_changed_cover_shows_in_the_quiz_too() -> void:
	await _play_first_song()
	_press("SongControls/ShowAnswerButton")
	_cover_time_becomes(0)
	_popup.show_soundtrack(SoundtrackWithSongs.from_dict(STATISTICS[0]))
	_popup.change_cover()

	_popup.remove_cover()

	assert_bool(_now_playing().has_cover()).is_false()