extends SceneTree

const DELIVERY_AMOUNT := 3.0

var failures: Array[String] = []


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


func _run() -> void:
	var uninterrupted := _create_manager(4242)
	var local_control := _create_manager(4242)
	_check(
		uninterrupted.request_regional_jajce_delivery(DELIVERY_AMOUNT, &"loaded"),
		"The production facade should dispatch the authored Travnik-to-Jajce delivery",
	)
	for step in 6:
		uninterrupted.simulate_tick()
		local_control.simulate_tick()
	var saved_manifest_json: String = uninterrupted.serialize_save_manifest()
	var saved_manifest := SimulationSaveManifest.from_json(saved_manifest_json)
	_check(saved_manifest != null, "A mid-route combined manifest should validate")

	var restored := _create_manager(9999)
	_check(
		restored.restore_save_manifest(saved_manifest),
		"The local and regional authorities should restore from one manifest",
	)
	_check(
		restored.get_world_state_checksum() == uninterrupted.get_world_state_checksum(),
		"A mid-route restore should reproduce the complete authoritative checksum",
	)
	for step in RegionalSimulationFacade.ROUTE_TRAVEL_TICKS - 6:
		uninterrupted.simulate_tick()
		restored.simulate_tick()
		local_control.simulate_tick()

	_check(
		restored.get_world_state_checksum() == uninterrupted.get_world_state_checksum(),
		"Restored regional travel should continue identically without a loaded caravan visual",
	)
	_assert_delivery_arrived(restored)
	_check(
		restored.get_state_checksum() == local_control.get_state_checksum(),
		"A regional delivery must not change the local simulation authority",
	)
	_check(
		_local_economy_snapshot(restored) == _local_economy_snapshot(local_control),
		"Regional trade goods must not mutate the local pantry, woodpile, or apothecary",
	)
	_assert_regional_events_stay_out_of_local_history(restored)

	uninterrupted.free()
	restored.free()
	local_control.free()
	if failures.is_empty():
		print("[TEST] Production regional facade integration passed")
		quit(0)
		return
	for failure in failures:
		push_error("[TEST] " + failure)
	quit(1)


func _create_manager(seed_value: int) -> Node:
	var manager: Node = load("res://simulation/SimulationManager.gd").new()
	manager.simulation_seed = seed_value
	manager.debug_logs = false
	root.add_child(manager)
	manager.set_process(false)
	return manager


func _local_economy_snapshot(manager: Node) -> Dictionary:
	var apothecary: StorageStateRecord = manager.economy.get_storage(&"village_apothecary")
	return {
		"pantry": manager.get_pantry().to_dictionary(),
		"woodpile": manager.get_woodpile().to_dictionary(),
		"apothecary": apothecary.to_dictionary() if apothecary != null else {},
	}


func _assert_delivery_arrived(manager: Node) -> void:
	var facade := RegionalSimulationFacade.from_dictionary(manager.get_regional_snapshot())
	_check(facade != null, "The production regional snapshot should remain valid")
	if facade == null:
		return
	var service := facade.get_service()
	var state := service.get_world_state()
	var caravan := state.get_mobile_group(SimulationIds.REGIONAL_CARAVAN_BLUE)
	_check(caravan != null and caravan.is_at_location(), "The caravan should finish at a location")
	if caravan != null:
		_check(
			caravan.get_current_location_id() == SimulationIds.REGIONAL_LOCATION_JAJCE,
			"The inbound caravan should finish in Jajce",
		)
		_check(
			caravan.get_cargo_amount(SimulationIds.RESOURCE_REGIONAL_TRADE_GOODS) == 0.0,
			"Arrival should empty the caravan's exact cargo ledger",
		)
	var jajce := state.get_settlement(SimulationIds.REGIONAL_SETTLEMENT_JAJCE)
	_check(
		(
			jajce != null
			and (
				jajce.get_stockpile_amount(SimulationIds.RESOURCE_REGIONAL_TRADE_GOODS)
				== DELIVERY_AMOUNT
			)
		),
		"Jajce's regional ledger should receive the exact delivered amount",
	)
	_check(
		service.get_event_store().size() == 4, "The regional causal chain should have four facts"
	)


func _assert_regional_events_stay_out_of_local_history(manager: Node) -> void:
	var regional_types := [
		RegionalCaravanService.EVENT_CARGO_LOADED,
		RegionalCaravanService.EVENT_DEPARTED,
		RegionalCaravanService.EVENT_ARRIVED,
		RegionalCaravanService.EVENT_CARGO_DEPOSITED,
	]
	for event: EconomicEventRecord in manager.economic_events:
		_check(
			StringName(event.data.get("event_type", "")) not in regional_types,
			"Regional caravan facts must not enter the local numeric event-ID domain",
		)


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