extends SceneTree

const Controller = preload("res://p10_2/runtime_controller.gd")
const BattleService = preload("res://p10_2/mid_contract_battle_service.gd")
const ResolutionService = preload("res://p10_2/mid_contract_resolution_service.gd")
const Fixture = preload("res://tests/p10_2/mid_contract_fixture.gd")

var failures: Array[String] = []
var experience
var capture_root := ""
var captures := 0


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


func run_test() -> void:
	capture_root = OS.get_environment("ABG_P10_2_LAYOUT_CAPTURE_ROOT")
	if not capture_root.is_empty():
		DirAccess.make_dir_recursive_absolute(capture_root)
	await fixture("01-market2-small-zh", Fixture.new().migrated_snapshot(), Vector2i(760, 360), "zh_CN", 1.0, false, false, Controller.P102_SCREEN_MARKET)
	await fixture("02-market3-reference-en130", Fixture.new().market_service_at(3).state.snapshot(), Vector2i(844, 390), "en", 1.3, false, false, Controller.P102_SCREEN_MARKET)
	await fixture("03-plan-large-zh", Fixture.new().prepared_service(3, 2).state.snapshot(), Vector2i(1280, 720), "zh_CN", 1.0, false, false, Controller.P102_SCREEN_PLAN)
	await battle_fixture("04-battle-reference-en", Vector2i(844, 390), "en", 1.0, false, false, 28)
	await result_fixture("05-result-small-zh130", Vector2i(760, 360), "zh_CN", 1.3)
	await fixture("06-recovery-reference-zh", recovery_snapshot(), Vector2i(844, 390), "zh_CN", 1.0, false, false, Controller.P102_SCREEN_RECOVERY)
	await fixture("07-market5-large-reduced", Fixture.new().market_service_at(5).state.snapshot(), Vector2i(1280, 720), "zh_CN", 1.0, true, false, Controller.P102_SCREEN_MARKET_5)
	await settings_fixture("08-settings-reference-en130", Fixture.new().migrated_snapshot(), Vector2i(844, 390), "en", 1.3)
	await fixture("09-market-low-power", Fixture.new().market_service_at(4).state.snapshot(), Vector2i(844, 390), "zh_CN", 1.0, false, true, Controller.P102_SCREEN_MARKET)
	await fixture("10-portrait-guidance", Fixture.new().migrated_snapshot(), Vector2i(390, 844), "zh_CN", 1.0, false, false, Controller.P102_SCREEN_MARKET, true)
	if is_instance_valid(experience):
		experience.queue_free()
	await settle_frames(45)
	if failures.is_empty():
		print("ABG_P10_2_LAYOUT_ACCESSIBILITY_OK fixtures=10 states=market2,market3,plan,battle,result,recovery,market5,settings,low_power,rotate viewports=760x360,844x390,1280x720,390x844 locales=zh_CN,en text_130=true reduced_motion=true muted=true low_power=true controls=48 panels=0 cards=0 captures=%d" % captures)
		quit(0)
	else:
		for failure in failures:
			push_error(failure)
		quit(1)


func fixture(label: String, snapshot: Dictionary, viewport: Vector2i, locale: String, scale: float, reduced: bool, low_power: bool, expected_screen: String, portrait := false) -> void:
	await mount(snapshot, viewport, locale, scale, reduced, low_power)
	expect(experience.screen == expected_screen, "%s restores %s; got %s" % [label, expected_screen, experience.screen])
	verify_current(label, viewport, portrait)
	await capture(label)


func battle_fixture(label: String, viewport: Vector2i, locale: String, scale: float, reduced: bool, low_power: bool, ticks: int) -> void:
	await mount(Fixture.new().prepared_service(4, 1).state.snapshot(), viewport, locale, scale, reduced, low_power)
	experience.choose_region_plan("guard_center")
	experience.advance_region_battle_ticks(ticks)
	await settle_frames()
	expect(experience.screen == Controller.P102_SCREEN_BATTLE and not experience.region_battle_complete, "%s shows live battle" % label)
	expect(experience.find_children("P101BattleActor_*", "TextureRect", true, false).size() >= 2, "%s shows the Company line" % label)
	expect(not experience.find_children("P101BattleEnemy_*", "TextureRect", true, false).is_empty(), "%s shows entered enemies" % label)
	verify_current(label, viewport, false)
	await capture(label)


func result_fixture(label: String, viewport: Vector2i, locale: String, scale: float) -> void:
	await mount(Fixture.new().prepared_service(4, 1).state.snapshot(), viewport, locale, scale, false, false)
	experience.choose_region_plan("guard_center")
	experience.advance_region_battle_ticks(999)
	await settle_frames()
	expect(experience.region_battle_complete and experience.find_child("P101BattleResultBand", true, false) != null, "%s shows terminal result" % label)
	verify_current(label, viewport, false)
	await capture(label)


func settings_fixture(label: String, snapshot: Dictionary, viewport: Vector2i, locale: String, scale: float) -> void:
	await mount(snapshot, viewport, locale, scale, true, false)
	experience.toggle_settings()
	await settle_frames()
	expect(experience.find_child("P100SettingsBand", true, false) != null, "%s exposes inherited settings" % label)
	verify_current(label, viewport, false)
	await capture(label)


func recovery_snapshot() -> Dictionary:
	var service = Fixture.new().prepared_service(4, 2)
	var battle: Dictionary = BattleService.new(service.state.snapshot()).run_to_terminal("hold_line")
	var resolver = ResolutionService.new(service.state.snapshot())
	var settled: Dictionary = resolver.settle("p102-layout-recovery", resolver.state.revision, battle.snapshot)
	return Dictionary(settled.snapshot).duplicate(true) if settled.ok else {}


func mount(snapshot: Dictionary, viewport: Vector2i, locale: String, scale: float, reduced: bool, low_power: bool) -> void:
	if is_instance_valid(experience):
		experience.queue_free()
		await settle_frames(12)
	root.size = viewport
	root.content_scale_mode = Window.CONTENT_SCALE_MODE_CANVAS_ITEMS
	root.content_scale_aspect = Window.CONTENT_SCALE_ASPECT_EXPAND
	root.content_scale_size = viewport
	experience = Controller.new()
	experience.persistence_enabled = false
	experience.battle_auto_advance = false
	experience.locale = locale
	experience.text_scale = scale
	experience.reduced_motion = reduced
	experience.muted = true
	experience.low_power = low_power
	experience.size = Vector2(viewport)
	experience.configure_entry(snapshot)
	root.add_child(experience)
	await settle_frames()


func verify_current(label: String, viewport: Vector2i, portrait: bool) -> void:
	var bounds := Rect2(Vector2.ZERO, Vector2(viewport))
	if portrait:
		expect(experience.find_child("P97RotateNotice", true, false) != null, "%s shows landscape guidance" % label)
		return
	expect(experience.find_child("P97RotateNotice", true, false) == null, "%s renders the landscape world" % label)
	expect(float(experience.get_meta("visible_world_ratio", 0.0)) >= 0.80, "%s keeps world-first composition" % label)
	expect(experience.find_children("*", "Panel", true, false).is_empty(), "%s adds no app Panel surfaces" % label)
	for node in experience.find_children("*", "Button", true, false):
		var button := node as Button
		if not button.visible or button.is_queued_for_deletion():
			continue
		expect(button.size.x >= 48 and button.size.y >= 48, "%s target %s is at least 48px" % [label, button.name])
		expect(bounds.encloses(button.get_global_rect()), "%s target %s stays inside %s" % [label, button.name, viewport])
	for node in experience.find_children("*", "Control", true, false):
		var lowered := String(node.name).to_lower()
		expect("card" not in lowered and "modal" not in lowered and "dialog" not in lowered, "%s has no card/modal surface: %s" % [label, node.name])


func capture(label: String) -> void:
	if capture_root.is_empty():
		return
	await RenderingServer.frame_post_draw
	var error := root.get_texture().get_image().save_png(capture_root.path_join(label + ".png"))
	expect(error == OK, "%s capture writes" % label)
	if error == OK:
		captures += 1
	await process_frame


func settle_frames(count := 5) -> void:
	for _index in count:
		await process_frame


func expect(condition: bool, message: String) -> void:
	if not condition:
		failures.append("P10.2 layout: %s" % message)