extends GdUnitTestSuite
## The settings files in the config folder: the settings the game saves by itself, and the
## config file with the server, password and debug mode that the user edits by hand.

const SAVED_VALUES: Dictionary = {
	&"auto_repeat_song": false, &"stop_after_current": false, &"hide_next_track": false,
	&"hide_beginning": true, &"hide_for_seconds": 7.0, &"hide_length": true,
	&"hide_ticks": true, &"winning_score": 13, &"inspiration_list_speed": 4,
	&"fullscreen": true, &"last_seen_version": "1.2.3",
}

var _snapshot: AutoloadSnapshot
var _config_dir_before: String
var _config_dir: String


func before_test() -> void:
	_snapshot = AutoloadSnapshot.take([Settings])
	_config_dir_before = OS.get_environment(Settings.CONFIG_DIR_ENV)
	_config_dir = create_temp_dir("settings_files")
	OS.set_environment(Settings.CONFIG_DIR_ENV, _config_dir)
	DirAccess.remove_absolute(Settings.saved_settings_path())
	DirAccess.remove_absolute(Settings.config_path())


func after_test() -> void:
	OS.set_environment(Settings.CONFIG_DIR_ENV, _config_dir_before)
	_snapshot.restore()


func _set_settings(values: Dictionary) -> void:
	for setting: StringName in values:
		Settings.set(setting, values[setting])


func _write_config(text: String) -> void:
	var file: FileAccess = FileAccess.open(Settings.config_path(), FileAccess.WRITE)
	file.store_string(text)
	file.close()


func _saved_file() -> ConfigFile:
	var file: ConfigFile = ConfigFile.new()
	assert_int(file.load(Settings.saved_settings_path())).is_equal(OK)
	return file


func test_saved_settings_load_back() -> void:
	_set_settings(SAVED_VALUES)
	Settings.save_settings()
	_snapshot.restore()

	Settings.load_saved_settings()

	for setting: StringName in SAVED_VALUES:
		assert_that(Settings.get(setting)).override_failure_message(setting) \
				.is_equal(SAVED_VALUES[setting])


func test_every_saved_setting_is_tested() -> void:
	var saved: Array = []
	for section: String in Settings.SAVED_SETTINGS:
		saved.append_array(Settings.SAVED_SETTINGS[section])

	assert_array(saved).contains_exactly_in_any_order(SAVED_VALUES.keys())


func test_missing_file_keeps_the_current_settings() -> void:
	Settings.winning_score = 9

	Settings.load_saved_settings()

	assert_int(Settings.winning_score).is_equal(9)


func test_value_of_the_wrong_type_is_ignored() -> void:
	var file: ConfigFile = ConfigFile.new()
	file.set_value("quiz", "winning_score", "lots")
	file.set_value("quiz", "hide_ticks", true)
	file.save(Settings.saved_settings_path())
	Settings.winning_score = 9
	Settings.hide_ticks = false

	Settings.load_saved_settings()

	assert_int(Settings.winning_score).is_equal(9)
	assert_bool(Settings.hide_ticks).is_true()


func test_statistics_settings_are_not_saved() -> void:
	Settings.save_settings()

	var file: ConfigFile = _saved_file()
	assert_bool(file.has_section_key("quiz", "add_to_stats")).is_false()
	assert_bool(file.has_section_key("quiz", "use_low_played_mode")).is_false()


func test_queue_ids_are_saved_and_load_back() -> void:
	Settings.set_queue_id("https://music.example.com", "queue-1")
	Settings.winning_score = 12
	Settings.save_settings()
	Settings.queue_ids.clear()

	Settings.load_saved_settings()

	assert_str(_saved_file().get_value("queues", "https://music.example.com")).is_equal("queue-1")
	assert_dict(Settings.queue_ids).is_equal({"https://music.example.com": "queue-1"})


func test_saving_a_queue_id_leaves_the_other_settings_as_saved() -> void:
	Settings.winning_score = 10
	Settings.save_settings()
	Settings.winning_score = 12

	Settings.set_queue_id("https://music.example.com", "queue-1")

	var file: ConfigFile = _saved_file()
	assert_int(file.get_value("quiz", "winning_score")).is_equal(10)
	assert_str(file.get_value("queues", "https://music.example.com")).is_equal("queue-1")


func test_saving_a_queue_id_without_a_file_saves_only_the_queue_id() -> void:
	Settings.set_queue_id("https://music.example.com", "queue-1")

	var file: ConfigFile = _saved_file()
	assert_array(file.get_sections()).contains_exactly(["queues"])
	assert_str(file.get_value("queues", "https://music.example.com")).is_equal("queue-1")


func test_new_queue_id_replaces_only_its_server() -> void:
	Settings.set_queue_id("https://music.example.com", "queue-1")
	Settings.set_queue_id("http://localhost:8080", "local-1")
	Settings.set_queue_id("https://music.example.com", "queue-2")

	var file: ConfigFile = _saved_file()
	assert_str(file.get_value("queues", "https://music.example.com")).is_equal("queue-2")
	assert_str(file.get_value("queues", "http://localhost:8080")).is_equal("local-1")


func test_file_without_queues_keeps_the_current_queue_ids() -> void:
	Settings.save_settings()
	Settings.queue_ids["https://music.example.com"] = "queue-1"

	Settings.load_saved_settings()

	assert_dict(Settings.queue_ids).is_equal({"https://music.example.com": "queue-1"})


func test_fullscreen_is_saved_when_it_changes() -> void:
	Settings.set_fullscreen(true)
	assert_bool(_saved_file().get_value("window", "fullscreen")).is_true()

	Settings.set_fullscreen(false)
	assert_bool(_saved_file().get_value("window", "fullscreen")).is_false()


func test_files_are_in_the_folder_from_the_environment() -> void:
	assert_str(Settings.saved_settings_path().get_base_dir()).is_equal(_config_dir)
	assert_str(Settings.config_path().get_base_dir()).is_equal(_config_dir)


func test_files_are_in_the_config_folder_without_the_environment() -> void:
	OS.unset_environment(Settings.CONFIG_DIR_ENV)

	assert_str(Settings.config_dir()).is_equal(OS.get_config_dir().path_join("MusicPlayer"))


func test_debug_mode_saves_to_a_file_of_its_own() -> void:
	Settings.is_debug = true
	var debug_path: String = Settings.saved_settings_path()
	Settings.is_debug = false

	assert_str(debug_path).is_not_equal(Settings.saved_settings_path())


func test_missing_config_file_is_written_with_everything_commented_out() -> void:
	var config: IniFile = Settings.load_config()

	assert_bool(FileAccess.file_exists(Settings.config_path())).is_true()
	assert_array(config.get_sections()).is_empty()
	var text: String = FileAccess.get_file_as_string(Settings.config_path())
	for setting: String in ["#url = ", "#password =", "#debug = "]:
		assert_str(text).contains(setting)


func test_commented_out_config_gives_the_defaults() -> void:
	Settings.apply_config(Settings.load_config())

	assert_bool(Settings.is_debug).is_equal(OS.has_feature("debug"))
	var server: String = Settings.DEBUG_SERVER if Settings.is_debug else Settings.SERVERS[0]
	assert_str(Settings.default_path).is_equal(server)
	assert_str(Settings.api_password).is_empty()


func test_config_sets_server_password_and_debug() -> void:
	_write_config("[server]\nurl = https://tmusic.sanplex.xyz/\n"
			+ "password = secret\n[game]\ndebug = false\n")

	Settings.apply_config(Settings.load_config())

	assert_bool(Settings.is_debug).is_false()
	assert_str(Settings.default_path).is_equal("https://tmusic.sanplex.xyz")
	assert_int(Settings.selected_server).is_equal(1)
	assert_array(Settings.servers).is_equal(Settings.SERVERS)
	assert_str(Settings.api_password).is_equal("secret")


func test_server_not_in_the_list_is_added_to_it() -> void:
	_write_config("[server]\nurl = http://music.home:9000\n")

	Settings.apply_config(Settings.load_config())

	assert_str(Settings.default_path).is_equal("http://music.home:9000")
	assert_str(Settings.servers[Settings.selected_server]).is_equal("http://music.home:9000")
	assert_int(Settings.servers.size()).is_equal(Settings.SERVERS.size() + 1)


func test_debug_mode_from_the_config_uses_the_local_server() -> void:
	_write_config("[game]\ndebug = true\n")

	Settings.apply_config(Settings.load_config())

	assert_bool(Settings.is_debug).is_true()
	assert_str(Settings.default_path).is_equal(Settings.DEBUG_SERVER)
	assert_int(Settings.winning_score).is_equal(Settings.DEBUG_WINNING_SCORE)


func test_both_comment_styles_work() -> void:
	_write_config("# hash comment\n[server]\n; semicolon comment\n#url = http://a\n"
			+ "password = pa;ss#word\n  # indented\n[game]\ndebug = false\n")

	Settings.apply_config(Settings.load_config())

	assert_str(Settings.api_password).is_equal("pa;ss#word")
	assert_bool(Settings.is_debug).is_false()
	assert_str(Settings.default_path).is_equal(Settings.SERVERS[0])


func test_config_value_of_the_wrong_type_is_ignored() -> void:
	_write_config("[game]\ndebug = maybe\n")

	Settings.apply_config(Settings.load_config())

	assert_bool(Settings.is_debug).is_equal(OS.has_feature("debug"))


func test_config_file_is_never_overwritten() -> void:
	_write_config("; mine\n[server]\npassword = secret\n")

	Settings.load_config()
	Settings.save_settings()

	assert_str(FileAccess.get_file_as_string(Settings.config_path())) \
			.is_equal("; mine\n[server]\npassword = secret\n")