extends SceneTree

const MainScene = preload("res://main.tscn")
const SETTINGS_PATH := "user://aetherbound_guild_settings.json"

var failures: Array[String] = []


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


func run_test() -> void:
	root.content_scale_mode = Window.CONTENT_SCALE_MODE_CANVAS_ITEMS
	# Single target size (owner policy): every screen is authored at 1280x720.
	root.content_scale_aspect = Window.CONTENT_SCALE_ASPECT_KEEP
	root.content_scale_size = Vector2i(1280, 720)
	root.size = Vector2i(1280, 720)
	_cleanup()
	var game = MainScene.instantiate()
	game.audio_enabled = false
	root.add_child(game)
	await _frames(50)
	var shell = game.entry_shell
	expect(shell != null and shell.current_screen == "boot", "normal launch creates the entry shell")
	# The boot screen dwells on its verification pass; wait for the handoff
	# instead of assuming a fixed frame budget.
	var apply: Button = await _wait_for_node(shell, "SetupApply")
	await _touch(apply)
	expect(shell.current_screen == "title", "parsed ScreenTouch applies first launch and reaches Title")
	var settings_button: Button = shell.find_child("TitleSettings", true, false)
	await _touch(settings_button)
	expect(shell.current_screen == "settings", "parsed ScreenTouch opens Settings")
	var language_category: Button = shell.find_child("SettingsCategory_language", true, false)
	await _touch(language_category)
	var locale_button: Button = shell.find_child("SettingLocale", true, false)
	await _touch(locale_button)
	var apply_settings: Button = shell.find_child("SettingsApply", true, false)
	await _touch(apply_settings)
	var back: Button = shell.find_child("SettingsBack", true, false)
	await _touch(back)
	expect(shell.current_screen == "title" and shell.settings.locale == "en", "locale applies and Back returns to Title")
	await _release_scene(game)

	var restarted = MainScene.instantiate()
	restarted.audio_enabled = false
	root.add_child(restarted)
	await _frames(50)
	var restarted_title := await _wait_for_node(restarted.entry_shell, "TitleSafeArea")
	expect(restarted_title != null and restarted.entry_shell.current_screen == "title", "restart skips completed first launch")
	await _release_scene(restarted)
	_cleanup()
	var reset_game = MainScene.instantiate()
	reset_game.audio_enabled = false
	root.add_child(reset_game)
	await _frames(50)
	var reset_setup := await _wait_for_node(reset_game.entry_shell, "FirstLaunchResponsiveLayout")
	expect(reset_setup != null, "settings reset restores first-launch setup")
	await _release_scene(reset_game)
	_cleanup()
	if failures.is_empty():
		print("ABG_DEV1_ENTRY_TOUCH_OK parsed_screen_touch=true boot_setup_title_settings_apply_back=true restart=title reset=first_launch")
		quit(0)
	else:
		for failure in failures:
			push_error(failure)
		quit(1)


func _release_scene(scene: Node) -> void:
	# Release the synthesized SFX stream while the tree is still alive; freeing
	# it during teardown races the audio server and leaks the generator playback.
	var facade = scene.get("facade")
	if facade != null:
		var adapter = facade.get("audio_adapter")
		if adapter != null:
			adapter.cleanup()
	scene.queue_free()
	await _frames(20)


func _touch(control: Control) -> void:
	var center := root.get_final_transform() * control.get_global_rect().get_center()
	var press := InputEventScreenTouch.new()
	press.position = center
	press.pressed = true
	press.index = 0
	Input.parse_input_event(press)
	await _frames(2)
	var release := InputEventScreenTouch.new()
	release.position = center
	release.pressed = false
	release.index = 0
	Input.parse_input_event(release)
	await _frames(4)


func _wait_for_node(shell: Node, node_name: String, max_frames := 600) -> Node:
	for _i in range(max_frames):
		var node := shell.find_child(node_name, true, false)
		if node != null:
			return node
		await process_frame
	return null


func _frames(count: int) -> void:
	for frame in range(count):
		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 entry touch: %s" % message)