extends SceneTree

# A player who is short of research data is told where it comes from.
#
# It is the one currency with a non-obvious source: ore and gas are visibly
# mined, but data comes off conquered worlds and nothing said so at the point
# it mattered. The skill tree refused the node in SILENCE, and the ship lab
# refused with "Research is already queued or complete" - which is not why it
# refused, and sends the player looking at the wrong thing.
#
# Covers:
#   A. a doctrine that costs data the player has not got opens the explainer,
#      naming what was wanted and what they hold
#   B. the same from the ship lab, instead of blaming the queue
#   C. with the data in hand, the research goes through and no popup appears

var game_state: Node
var scene: Node
var controller: Node
var popup: Control
var elapsed: float = 0.0
var stage: int = 0


func _initialize() -> void:
	game_state = root.get_node("GameState")
	game_state.buildings.clear()
	game_state.extractors.clear()
	game_state.reset_progression()
	game_state.reset_new_game()
	game_state.intro_active = false
	game_state.reset_quests()
	game_state.rocks = 5000
	game_state.bank_inventory.set_amount(GameState.RESOURCE_GAS, 5000)
	game_state.bank_inventory.set_amount(GameState.RESOURCE_ENERGY, 5000)
	game_state.research_points = 0
	game_state.unlocked = ["shipyards"]
	scene = load("res://world/Main.tscn").instantiate()
	root.add_child(scene)
	current_scene = scene
	controller = scene.get_node("BuildController")
	popup = scene.get_node("UI/ResearchPointsMenu")


func _costly_doctrine() -> String:
	for node in GameState.SKILL_TREE:
		if int(node.get("research_points", 0)) > 0:
			return String(node.id)
	return ""


func _process(delta: float) -> bool:
	elapsed += delta
	if elapsed < 0.4:
		return false
	match stage:
		0:
			var doctrine: String = _costly_doctrine()
			if doctrine == "":
				return _fail("no doctrine costs research data, so this proves nothing")
			# Everything but the data: the prerequisite met and the ore paid,
			# so data is unambiguously the thing that is missing.
			game_state.unlocked = ["shipyards"]
			var requires: String = String(game_state.skill_node(doctrine).get("requires", ""))
			if requires != "" and not game_state.is_unlocked(requires):
				game_state.unlocked.append(requires)
			game_state.research_points = 0

			var mothership_id: int = game_state.add_building(
				GameState.BUILDING_MOTHERSHIP, Vector2.ZERO)
			controller.skill_menu.building_id = mothership_id
			if popup.visible:
				return _fail("the explainer was open before anything was refused")
			controller._on_unlock_requested(doctrine)
			if not popup.visible:
				return _fail("a doctrine costing data was refused with no explanation")
			if game_state.is_unlocked(doctrine):
				return _fail("the doctrine was researched with no data at all")
			var said: String = popup.have_label.text
			if not said.contains("YOU HAVE 0"):
				return _fail("the explainer does not say what the player holds: '%s'" % said)
			if not popup.detail_label.text.to_lower().contains("scanner"):
				return _fail("the explainer never mentions how to find a lab world")
			print("skill tree: refused and explained - '%s'" % said)
			popup.close_menu()

			# --- C. with the data, it goes through, quietly ---------------
			game_state.research_points = 20
			controller._on_unlock_requested(doctrine)
			if not game_state.is_unlocked(doctrine):
				return _fail("the doctrine was refused with data in hand")
			if popup.visible:
				return _fail("the explainer opened on a research that succeeded")
			print("with data in hand it goes through, and says nothing")
			elapsed = 0.0
			stage = 1
			return false
		1:
			# --- B. the lab explains too, rather than blaming the queue ---
			game_state.research_points = 0
			var lab_id: int = game_state.add_building(GameState.BUILDING_SHIP_LAB,
				Vector2(600.0, 0.0))
			controller.lab_building_id = lab_id
			controller.lab_vessel = GameState.VESSEL_INTERCEPTOR
			controller.lab_choice = 0
			var options: Array = controller._lab_options()
			if options.is_empty():
				return _fail("the lab offers nothing, so this proves nothing")
			# Pick an option that actually costs data.
			for i in range(options.size()):
				if game_state.research_point_cost(String(options[i].id)) > 0:
					controller.lab_choice = i
					break
			if game_state.research_point_cost(String(options[controller.lab_choice].id)) <= 0:
				return _fail("no lab option costs research data, so this proves nothing")
			controller._on_lab_buy()
			if not popup.visible:
				return _fail("the lab refused for want of data with no explanation")
			if controller.lab_menu.status.text.contains("already queued"):
				return _fail("the lab still blames the queue: '%s'" % controller.lab_menu.status.text)
			print("ship lab: refused and explained, not blamed on the queue")

			print("TEST_RESEARCH_POINTS_EXPLAINER: PASS")
			quit(0)
			return true
	return false


func _fail(message: String) -> bool:
	print("TEST_RESEARCH_POINTS_EXPLAINER: FAIL (%s)" % message)
	quit(1)
	return true