extends SceneTree

var passed: int = 0
var failed: int = 0
var _game_root: Node = null
var _local_passed: int = 0
var _local_failed: int = 0

func _init():
	await run()

func run():
	print("\n=== TEST: Research Activation ===\n")
	TestUtils.set_test_name("research_activation")
	
	var scene = load("res://docs/gyms/tiny_sword/tiny_sword.tscn")
	_game_root = scene.instantiate()
	root.add_child(_game_root)
	
	await _wait()
	
	var game_state: LevelGameState = _game_root.find_child("LevelGameState")
	var research_panel: ResearchPanel = _game_root.find_child("ResearchPanel") as ResearchPanel
	
	if game_state == null or research_panel == null:
		print("[ERROR] Missing LevelGameState or ResearchPanel node")
		_print_summary()
		quit(1)
		return
	
	var gold_mine_node = game_state.find_child("GoldMine")
	var gold_mine: CurrencyGenerator = gold_mine_node.find_child("CurrencyGenerator") as CurrencyGenerator if gold_mine_node else null
	
	if gold_mine == null:
		print("[ERROR] GoldMine node not found")
		_print_summary()
		quit(1)
		return
	
	# Test 1: Verify initial state - no research should be active
	print("[TARGET] initial_active_research_id: %s" % research_panel.get_active_research_id())
	TestUtils.assert_true(
		research_panel.get_active_research_id() == &"",
		"No research active initially"
	)
	
	# Test 2: Verify gold mine research exists and is linked to goldmine generator
	var gold_research = game_state.research_catalogue.get_research_by_id(&"gold_research")
	TestUtils.assert_not_null(
		gold_research,
		"Gold research exists in catalogue"
	)
	
	if gold_research != null:
		TestUtils.assert_true(
			gold_research.generator_id == &"goldmine",
			"Gold research is linked to goldmine generator"
		)
	
	# Test 3: Activate gold research
	research_panel.activate_research(&"gold_research")
	await _wait()
	
	print("[TARGET] active_after_gold_activation: %s" % research_panel.get_active_research_id())
	TestUtils.assert_true(
		research_panel.get_active_research_id() == &"gold_research",
		"Gold research is active after activation"
	)
	
	TestUtils.assert_true(
		research_panel.is_research_active(&"gold_research"),
		"is_research_active returns true for gold_research"
	)
	
	# Test 4: Verify research XP is granted when research is active
	var initial_gold_research_xp = game_state.get_research_xp(&"gold_research")
	print("[TARGET] initial_gold_research_xp: %s" % initial_gold_research_xp.to_string_suffix(2))
	
	# Simulate gold mine production (gold mine grants XP to gold_research)
	gold_mine._on_pressed()
	await _wait()
	
	var final_gold_research_xp_active = game_state.get_research_xp(&"gold_research")
	print("[TARGET] final_gold_research_xp_active: %s" % final_gold_research_xp_active.to_string_suffix(2))
	
	TestUtils.assert_true(
		final_gold_research_xp_active.mantissa > initial_gold_research_xp.mantissa,
		"Gold research XP increases when active (gold mine produces)"
	)
	
	# Test 5: Deactivate gold research by activating another research
	var farm_research = game_state.research_catalogue.get_research_by_id(&"farm_research")
	TestUtils.assert_not_null(
		farm_research,
		"Farm research exists in catalogue"
	)
	
	if farm_research != null:
		# Activate farm research (should deactivate gold research)
		research_panel.activate_research(&"farm_research")
		await _wait()
		
		print("[TARGET] active_after_farm_activation: %s" % research_panel.get_active_research_id())
		TestUtils.assert_true(
			research_panel.get_active_research_id() == &"farm_research",
			"Farm research is active after activation"
		)
		
		TestUtils.assert_false(
			research_panel.is_research_active(&"gold_research"),
			"Gold research is deactivated when farm is activated"
		)
		
		# Test 6: Verify research XP is NOT granted when research is inactive
		var initial_gold_research_xp_inactive = game_state.get_research_xp(&"gold_research")
		print("[TARGET] initial_gold_research_xp_inactive: %s" % initial_gold_research_xp_inactive.to_string_suffix(2))
		
		# Simulate gold mine production (gold mine should NOT grant XP to inactive gold_research)
		gold_mine._on_pressed()
		await _wait()
		
		var final_gold_research_xp_inactive = game_state.get_research_xp(&"gold_research")
		print("[TARGET] final_gold_research_xp_inactive: %s" % final_gold_research_xp_inactive.to_string_suffix(2))
		
		TestUtils.assert_equals(
			final_gold_research_xp_inactive.mantissa,
			initial_gold_research_xp_inactive.mantissa,
			"Gold research XP does not increase when inactive (gold mine produces)"
		)
	
	# Test 7: Test mutual exclusivity with multiple activations
	research_panel.activate_research(&"gold_research")
	await _wait()
	research_panel.activate_research(&"farm_research")
	await _wait()
	research_panel.activate_research(&"gold_research")
	await _wait()
	
	print("[TARGET] final_active_research_id: %s" % research_panel.get_active_research_id())
	TestUtils.assert_true(
		research_panel.get_active_research_id() == &"gold_research",
		"Only one research can be active at a time"
	)
	
	_print_summary()
	if failed == 0:
		quit(0)
	else:
		quit(1)

func _wait() -> void:
	await create_timer(0.5).timeout

func _print_summary():
	TestUtils.print_result()
	_local_passed = TestUtils.get_passed()
	_local_failed = TestUtils.get_failed()
	passed = _local_passed
	failed = _local_failed