extends SceneTree

const SettingsStore = preload("res://entry/settings_store.gd")
const EntryShell = preload("res://entry/entry_shell.gd")

const SETTINGS_PATH := "user://dev1_first_launch_test.json"

var failures: Array[String] = []


func _initialize() -> void:
	call_deferred("run_test")


func run_test() -> void:
	_cleanup()
	verify_defaults_validation_and_atomic_roundtrip()
	await verify_first_launch_once_and_restart()
	_cleanup()
	if failures.is_empty():
		print("ABG_DEV1_FIRST_LAUNCH_OK language=true safe_area=true text=100,115,130 reduced_motion=true reduced_flashes=true captions=true persisted=true once=true")
		quit(0)
	else:
		for failure in failures:
			push_error(failure)
		quit(1)


func verify_defaults_validation_and_atomic_roundtrip() -> void:
	var store: RefCounted = SettingsStore.new()
	store.path = SETTINGS_PATH
	var loaded: Dictionary = store.load_settings()
	expect(loaded.ok and not loaded.settings.setup_completed, "clean install supplies incomplete defaults")
	var value: Dictionary = loaded.settings
	value.locale = "en"
	value.safe_area = 48
	value.text_scale = 1.3
	value.reduced_motion = true
	value.reduced_flashes = true
	value.captions = false
	value.setup_completed = true
	var saved: Dictionary = store.save_settings(value)
	expect(saved.ok, "valid first-launch settings save atomically")
	var reloaded: Dictionary = store.load_settings()
	expect(
		reloaded.ok
		and reloaded.settings.locale == "en"
		and int(reloaded.settings.safe_area) == 48
		and is_equal_approx(float(reloaded.settings.text_scale), 1.3)
		and reloaded.settings.reduced_motion
		and reloaded.settings.reduced_flashes
		and not reloaded.settings.captions
		and reloaded.settings.setup_completed,
		"saved settings survive reload with the same semantics"
	)
	value.text_scale = 1.2
	expect(not store.save_settings(value).ok, "unsupported text scale is rejected")


func verify_first_launch_once_and_restart() -> void:
	_cleanup()
	var first = EntryShell.new()
	first.auto_start = false
	first.settings_store.path = SETTINGS_PATH
	root.add_child(first)
	await process_frame
	first.settings = first.settings_store.defaults()
	first.show_first_launch()
	await process_frame
	expect(first.find_child("SetupApply", true, false) != null and first.find_child("FirstLaunchReturn", true, false) == null, "first launch exposes Apply and no Back")
	expect(first.find_child("FirstLaunchPreviewFrame", true, false) != null, "first launch uses the approved preview frame")
	expect(first.find_child("SetupLanguage", true, false).get_node_or_null("ValuePlate") != null, "first-launch choices use authored value plates")
	expect(first.find_child("SetupReducedMotion", true, false).get_node_or_null("ValuePlate") != null, "first-launch toggles use authored state plates")
	expect(first.find_child("SetupApply", true, false).get_node_or_null("CommandFrame") != null, "first-launch Apply uses the primary command treatment")
	first.toggle_setup_reduced_motion()
	await process_frame
	expect(bool(first.setup_draft.reduced_motion), "reduced-motion row toggles through the real button callback")
	first.toggle_setup_reduced_flashes()
	await process_frame
	expect(bool(first.setup_draft.reduced_flashes), "reduced-flashes row toggles through the real button callback")
	first.toggle_setup_captions()
	await process_frame
	expect(not bool(first.setup_draft.captions), "captions row toggles through the real button callback")
	first.setup_draft.locale = "en"
	first.setup_draft.safe_area = 48
	first.setup_draft.text_scale = 1.3
	first.setup_draft.reduced_motion = true
	first.setup_draft.reduced_flashes = true
	first.setup_draft.captions = true
	first.apply_first_launch()
	await process_frame
	expect(first.settings.setup_completed, "Apply completes setup")
	first.queue_free()
	await process_frame

	var restarted = EntryShell.new()
	restarted.auto_start = false
	restarted.settings_store.path = SETTINGS_PATH
	root.add_child(restarted)
	await process_frame
	restarted._open_after_boot()
	await process_frame
	expect(restarted.get_node_or_null("FirstLaunchResponsiveLayout") == null, "completed setup is not forced after restart")
	expect(restarted.get_node_or_null("TitleSafeArea") != null, "restart advances to Title boundary")
	restarted.queue_free()
	await process_frame


func _cleanup() -> void:
	for path in [SETTINGS_PATH, "%s.bak" % SETTINGS_PATH, "%s.candidate" % SETTINGS_PATH]:
		if FileAccess.file_exists(path):
			DirAccess.remove_absolute(path)


func expect(condition: bool, message: String) -> void:
	if not condition:
		failures.append("DEV-1 first launch: %s" % message)