extends SceneTree

var failures: Array[String] = []


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


func _run() -> void:
	var manager := _create_manager()
	var actor: SimNPC = manager.npcs[0]
	var interested: SimNPC = manager.npcs[2]
	var berry := _register_resource(
		manager,
		&"carry_berry_bush",
		SimulationIds.ACTION_GATHER_FOOD,
		SimulationIds.RESOURCE_FOOD,
		3.0
	)
	var pantry: StorageStateRecord = manager.get_pantry()
	_set_pantry_amount(manager, 1.0)
	for npc in manager.npcs:
		npc.position = Vector3(40.0 + npc.id * 10.0, 0.0, 0.0)
	actor.position = Vector3.ZERO
	interested.position = Vector3(4.0, 0.0, 0.0)
	actor.hunger = 60.0
	interested.hunger = 90.0
	manager.economy.withdraw_to_inventory(actor, SimulationIds.RESOURCE_FOOD, 1.0)
	var quest: PlayerQuestRecord = manager.get_active_player_quest()
	_check(quest != null, "The carry loop needs an open player quest")
	if quest == null:
		berry.free()
		manager.free()
		_finish()
		return

	var state: PlayerStateRecord = manager.get_player_state()
	var carried: float = manager.player_gather(berry)
	_check(
		(
			is_equal_approx(carried, 2.0)
			and is_equal_approx(state.get_inventory_amount(SimulationIds.RESOURCE_FOOD), 2.0)
			and is_equal_approx(manager.get_pantry().get_amount(SimulationIds.RESOURCE_FOOD), 0.0)
		),
		"Gathering should fill the player's hands instead of the pantry directly",
	)
	var capacity_limited: float = manager.player_gather(berry)
	_check(
		(
			is_equal_approx(capacity_limited, 1.0)
			and is_equal_approx(state.get_inventory_amount(SimulationIds.RESOURCE_FOOD), 3.0)
		),
		"Remaining resource amount should cap the second gather",
	)
	var hands_full: float = manager.player_gather(berry)
	_check(
		(
			is_equal_approx(hands_full, 0.0)
			and is_equal_approx(state.get_inventory_amount(SimulationIds.RESOURCE_FOOD), 3.0)
		),
		"An empty resource should refuse further gathering",
	)

	var pantry_before: float = manager.get_pantry().get_amount(SimulationIds.RESOURCE_FOOD)
	var deposited: float = manager.player_deposit(SimulationIds.RESOURCE_FOOD)
	_check(
		(
			is_equal_approx(deposited, 3.0)
			and is_equal_approx(
				manager.get_pantry().get_amount(SimulationIds.RESOURCE_FOOD), pantry_before + 3.0
			)
			and is_equal_approx(state.get_inventory_amount(SimulationIds.RESOURCE_FOOD), 0.0)
			and manager.get_active_player_quest() == null
			and (
				manager.get_latest_player_quest_for_requester(interested.id).get_status()
				== PlayerQuestRecord.STATUS_COMPLETED
			)
		),
		"Depositing carried food should resolve the quest through the real pantry transaction",
	)

	var saved_json: String = manager.serialize_state()
	var restored := _create_manager(902)
	_check(
		restored.restore_state_from_json(saved_json),
		"The emptied carry state should restore through the current schema"
	)
	_check(
		(
			restored.get_state_checksum() == manager.get_state_checksum()
			and is_equal_approx(
				restored.get_player_state().get_inventory_amount(SimulationIds.RESOURCE_FOOD), 0.0
			)
		),
		"Restore should preserve the player's empty carried inventory and checksum",
	)

	var carry_state_saved: String = manager.serialize_state()
	manager.player_gather(berry)
	var mid_carry: String = manager.serialize_state()
	var mid_restored := _create_manager(903)
	_check(
		mid_restored.restore_state_from_json(mid_carry),
		"A partially carried inventory should restore through the current schema"
	)
	_check(
		(
			mid_restored.get_state_checksum() == manager.get_state_checksum()
			and is_equal_approx(
				mid_restored.get_player_state().get_inventory_amount(SimulationIds.RESOURCE_FOOD),
				manager.get_player_state().get_inventory_amount(SimulationIds.RESOURCE_FOOD)
			)
		),
		"Restore should preserve the player's carried inventory mid-transport",
	)

	berry.free()
	manager.free()
	restored.free()
	mid_restored.free()
	_finish()


func _register_resource(
	manager: Node,
	node_id: StringName,
	action_id: StringName,
	resource_id: StringName,
	amount: float
) -> ResourceNode:
	var node := ResourceNode.new()
	node.name = "CarryResource"
	node.node_id = node_id
	node.action_id = action_id
	node.resource_id = resource_id
	node.initial_amount = amount
	node.yield_per_action = 2.0
	node.debug_label_enabled = false
	var interaction_point := Marker3D.new()
	interaction_point.name = "InteractionPoint"
	node.add_child(interaction_point)
	root.add_child(node)
	_check(
		manager.register_resource_node(node),
		"The carry loop should bind a real finite ResourceNode"
	)
	return node


func _create_manager(seed_value: int = 901) -> Node:
	var manager: Node = load("res://simulation/SimulationManager.gd").new()
	manager.simulation_seed = seed_value
	manager.debug_logs = false
	var home_positions: Array[Vector3] = [
		Vector3(0.0, 0.0, 0.0),
		Vector3(2.0, 0.0, 0.0),
		Vector3(10.0, 0.0, 0.0),
		Vector3(12.0, 0.0, 0.0),
		Vector3(30.0, 0.0, 30.0),
		Vector3(40.0, 0.0, 40.0),
	]
	manager.home_positions = home_positions
	root.add_child(manager)
	manager.set_process(false)
	return manager


func _set_pantry_amount(manager: Node, amount: float) -> void:
	var pantry: StorageStateRecord = manager.get_pantry()
	pantry.withdraw(SimulationIds.RESOURCE_FOOD, pantry.get_amount(SimulationIds.RESOURCE_FOOD))
	pantry.deposit(SimulationIds.RESOURCE_FOOD, amount)
	manager.economy.sync_resource(SimulationIds.RESOURCE_FOOD)


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


func _finish() -> void:
	if failures.is_empty():
		print("[TEST] Player carry and deposit loop passed")
		quit(0)
		return
	for failure in failures:
		push_error("[TEST] " + failure)
	quit(1)