extends SceneTree

# Headless gameplay test: run with
#   godot --headless -s res://tests/test_modal_blocks_input.gd
# With a panel open, nothing behind it may react to a touch.
#
# Two separate leaks, because there are two separate input paths:
#
#   1. GUI clicks. The skill and formation panels cannot block these the
#      normal way (mouse_filter = STOP), because the skill tree and the
#      formation editor are driven from raw _unhandled_input, and a Control
#      that consumes touches through the GUI system swallows them before
#      they ever get there. So the panels stay transparent and the buttons
#      check whether they are behind one.
#   2. Raw input. A touch landing on the panel but missing a skill node was
#      left unhandled, so it fell through to GameController - which sits on
#      the ROOT node and therefore sees everything its children ignore - and
#      moved the fleet or pinch-zoomed the world behind the menu.
#
# Verifies:
#   1. a button outside an open panel does not fire
#   2. a button INSIDE the open panel still does (or the panel is unusable)
#   3. with every panel closed, that same outside button fires normally, so
#      a pass cannot just mean "the button never works"
#   4. a touch on an open panel does not reach the world behind it

var scene: Node
var game_state: Node
var fleet: Node
var skill_menu: Control
var map_button: Control
var skill_close: Control
var stage: int = 0
var elapsed: float = 0.0
var outside_fired: bool = false
var inside_fired: bool = false


func _initialize() -> void:
	game_state = root.get_node("GameState")
	game_state.buildings.clear()
	game_state.extractors.clear()
	game_state.transporters.clear()
	scene = load("res://Main.tscn").instantiate()
	root.add_child(scene)
	fleet = scene.get_node("Fleet")
	skill_menu = scene.get_node("UI/SkillMenu")
	map_button = scene.get_node("UI/MapButton")
	skill_close = scene.get_node("UI/SkillMenu/CloseButton")
	map_button.pressed.connect(func(): outside_fired = true)
	skill_close.pressed.connect(func(): inside_fired = true)


func _tap(button: Control) -> void:
	# Straight at the button's own _gui_input, which is where a real tap
	# lands once Godot has routed it.
	var centre: Vector2 = button.size / 2.0
	for pressed in [true, false]:
		var ev: InputEventScreenTouch = InputEventScreenTouch.new()
		ev.pressed = pressed
		ev.position = centre
		button._gui_input(ev)


func _process(delta: float) -> bool:
	elapsed += delta
	match stage:
		0:
			if elapsed < 0.2:
				return false
			scene.get_node("AsteroidField").set_process(false)
			scene.get_node("EnemySpawner").set_process(false)

			# --- 3. baseline: it works with nothing open ----------------
			outside_fired = false
			_tap(map_button)
			if not outside_fired:
				print("TEST_MODAL_BLOCKS_INPUT: FAIL (the button never fires even with no panel open - the test proves nothing)")
				quit(1)
				return true
			print("no panel open -> outside button fires")
			# That tap actually OPENED the world map, which is itself a modal
			# panel - leave it open and it correctly blocks the research
			# panel's own buttons, which is a true result but not the one
			# being measured here.
			scene.get_node("UI/WorldMap").visible = false

			skill_menu.visible = true
			elapsed = 0.0
			stage = 1
			return false
		1:
			if elapsed < 0.2:
				return false
			# --- 1. behind an open panel --------------------------------
			outside_fired = false
			_tap(map_button)
			if outside_fired:
				print("TEST_MODAL_BLOCKS_INPUT: FAIL (a button behind the open research panel still fired)")
				quit(1)
				return true
			print("research panel open -> button behind it is inert")

			# --- 2. inside it ------------------------------------------
			inside_fired = false
			_tap(skill_close)
			if not inside_fired:
				print("TEST_MODAL_BLOCKS_INPUT: FAIL (the panel's own close button stopped working)")
				quit(1)
				return true
			print("panel's own button still works")
			elapsed = 0.0
			stage = 2
			return false
		2:
			if elapsed < 0.2:
				return false
			# --- 4. raw input must not reach the world ------------------
			skill_menu.visible = true
			var before: Vector2 = fleet.fleet_target
			var controller: Node = scene.get_node("BuildController")
			var ev: InputEventScreenTouch = InputEventScreenTouch.new()
			ev.pressed = true
			ev.position = Vector2(360.0, 900.0)
			controller._unhandled_input(ev)
			if not root.get_viewport().is_input_handled():
				print("TEST_MODAL_BLOCKS_INPUT: FAIL (a touch on the open panel was left unhandled - it falls through to the world behind)")
				quit(1)
				return true
			if fleet.fleet_target != before:
				print("TEST_MODAL_BLOCKS_INPUT: FAIL (the fleet moved from a touch on the panel)")
				quit(1)
				return true
			print("touch on the panel consumed, fleet target unchanged")
			print("TEST_MODAL_BLOCKS_INPUT: PASS")
			quit(0)
			return true
	return false