extends SceneTree

var failures: Array[String] = []


func _init() -> void:
	_run.call_deferred()


func _run() -> void:
	var combo_script: Script = load("res://scenes/components/combo_window.gd")
	_expect(combo_script != null, "ComboWindow script should load")
	if combo_script == null:
		_finish()
		return

	var combo: Node = combo_script.new()
	root.add_child(combo)
	await process_frame
	combo.set("size", 4)

	combo.call("record", &"A")
	combo.call("record", &"Ø")
	combo.call("record", &"SP")
	_expect_array(combo.call("get_slots"), [&"A", &"Ø", &"SP"], "ComboWindow should preserve visible miss slots")
	_expect_string(str(combo.call("get_pattern")), "ASP", "get_pattern should ignore miss placeholders")
	_expect_string(str(combo.call("get_contiguous_pattern")), "SP", "contiguous pattern should not cross miss placeholders")
	_expect_bool(bool(combo.call("has_pending_clear")), false, "three slots should not request full clear")
	combo.call("clear", &"reset")

	for symbol: StringName in [&"A", &"D", &"W", &"S"]:
		combo.call("record", symbol)
	_expect_array(combo.call("get_slots"), [&"A", &"D", &"W", &"S"], "fourth input should remain visible before clear")
	_expect_bool(bool(combo.call("has_pending_clear")), true, "fourth input should queue full clear")
	_expect_string(str(combo.call("consume_pending_clear_reason")), "full", "fourth input clear reason")
	combo.call("queue_clear", &"full", 0.001)
	combo.call("flush_pending_clear")
	_expect_array(combo.call("get_slots"), [], "flush_pending_clear should clear full window")

	combo.call("record", &"A")
	combo.call("record", &"A")
	combo.call("clear", &"skill:ground_attack_left_2")
	_expect_array(combo.call("get_slots"), [], "successful skill clear should empty slots")
	combo.free()
	_finish()


func _expect(condition: bool, label: String) -> void:
	if not condition:
		failures.append(label)


func _expect_bool(actual: bool, expected: bool, label: String) -> void:
	if actual != expected:
		failures.append("%s: expected %s, got %s" % [label, expected, actual])


func _expect_array(actual: Array, expected: Array, label: String) -> void:
	if actual != expected:
		failures.append("%s: expected %s, got %s" % [label, expected, actual])


func _expect_string(actual: String, expected: String, label: String) -> void:
	if actual != expected:
		failures.append("%s: expected %s, got %s" % [label, expected, actual])


func _finish() -> void:
	if failures.is_empty():
		print("PASS combo window")
		quit(0)
	else:
		for failure: String in failures:
			push_error(failure)
		quit(1)