extends SceneTree


class FakeActiveWorld:
	extends Node

	var resource_candidates: Array[Dictionary] = []
	var activity_position := Vector3(4.0, 0.0, 7.0)
	var activity_candidates: Array[Dictionary] = []

	func get_resource_candidates(_action_id: StringName) -> Array[Dictionary]:
		return resource_candidates

	func get_activity_target(_action_id: StringName, _origin: Vector3 = Vector3.ZERO) -> Dictionary:
		return {"target_id": "", "position": activity_position}

	func get_activity_candidates(_action_id: StringName) -> Array[Dictionary]:
		return activity_candidates


var failures: Array[String] = []
var travel_requests: Array[Vector3] = []


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


func _run() -> void:
	_test_selection_and_execution_are_separate()
	_test_opportunity_helper_selection_preserves_precedence()
	_test_target_resolution_and_travel_are_separate()

	if failures.is_empty():
		print("[TEST] Action system boundaries passed")
		quit(0)
		return

	for failure in failures:
		push_error("[TEST] " + failure)
	quit(1)


func _test_selection_and_execution_are_separate() -> void:
	var village := SimVillage.new()
	village.debug_logs = false
	var npc := SimNPC.new(700, "BoundaryWorker", SimulationIds.PROFESSION_FARMER, 5.0, 5.0)
	npc.hunger = 80.0
	var executor := ActionExecutionSystem.new()
	executor.advance_npc(npc, village)
	_check(
		npc.current_task == SimulationIds.ACTION_IDLE,
		"Execution should update state without selecting an action"
	)
	var selector := ActionSelectionSystem.new()
	var selection := selector.select_action(npc, village)
	_check(
		selection.action_id == SimulationIds.ACTION_WITHDRAW_FOOD,
		"Selection should independently choose food retrieval"
	)
	_check(
		not selection.reason.is_empty(),
		"Selection should expose the real decision branch for presentation"
	)
	npc.hunger = 20.0
	npc.energy = 80.0
	var work_selection := selector.select_action(npc, village)
	_check(
		work_selection.scores.size() == 4,
		"Ordinary work selection should expose all compared utility scores"
	)
	var guard := SimNPC.new(701, "BoundaryGuard", SimulationIds.PROFESSION_GUARD, 5.0, 5.0)
	guard.hunger = 20.0
	guard.energy = 80.0
	village.food = 100.0
	village.wood = 0.0
	village.safety = 0.0
	village.knowledge = 100.0
	village.update_modifiers()
	village.update_priorities()
	var unfunded_selection := selector.select_action(guard, village, 0.5)
	_check(
		unfunded_selection.action_id == SimulationIds.ACTION_GATHER_WOOD,
		"A guard should gather wood instead of selecting patrol when its material cost is unavailable"
	)
	_check(
		(
			unfunded_selection.rejections.has(SimulationIds.ACTION_PATROL)
			and "Needs 1 Wood" in String(unfunded_selection.rejections[SimulationIds.ACTION_PATROL])
		),
		"Selection should expose a readable definition-backed rejection reason"
	)


func _test_opportunity_helper_selection_preserves_precedence() -> void:
	var village := SimVillage.new()
	village.food = 100.0
	village.wood = 100.0
	village.safety = 100.0
	village.knowledge = 100.0
	village.update_modifiers()
	village.update_priorities()
	var npc := SimNPC.new(702, "OpportunityHelper", SimulationIds.PROFESSION_WANDERER, 5.0, 5.0)
	npc.hunger = 20.0
	npc.energy = 80.0
	var helper := _helper_result(npc.id, SimulationIds.ACTION_GATHER_WOOD)
	var selector := ActionSelectionSystem.new()
	var selection := selector.select_action(npc, village, 0.5, [npc], helper)
	_check(
		(
			selection.action_id == SimulationIds.ACTION_GATHER_WOOD
			and "Responding to village need" in selection.reason
			and "Knows the need" in selection.reason
		),
		"The matching derived helper should choose its reported ordinary supply action"
	)

	npc.energy = 20.0
	selection = selector.select_action(npc, village, 0.5, [npc], helper)
	_check(
		selection.action_id == SimulationIds.ACTION_REST,
		"Urgent low energy should take precedence over an opportunity response"
	)
	npc.energy = 50.0
	selection = selector.select_action(npc, village, 0.0, [npc], helper)
	_check(
		selection.action_id == SimulationIds.ACTION_SLEEP,
		"The sleep schedule should take precedence over an opportunity response"
	)
	npc.energy = 80.0
	npc.hunger = 90.0
	selection = selector.select_action(npc, village, 0.5, [npc], helper)
	_check(
		selection.action_id == SimulationIds.ACTION_WITHDRAW_FOOD,
		"Critical hunger should take precedence over an opportunity response"
	)
	npc.hunger = 20.0
	helper = _helper_result(npc.id + 1, SimulationIds.ACTION_GATHER_WOOD)
	selection = selector.select_action(npc, village, 0.5, [npc], helper)
	_check(
		"Responding to village need" not in selection.reason,
		"A helper result must not redirect a different NPC"
	)


func _test_target_resolution_and_travel_are_separate() -> void:
	var adapter := FakeActiveWorld.new()
	adapter.resource_candidates = [
		{"target_id": "boundary_risky_bush", "position": Vector3(1.0, 0.0, 0.0)},
		{"target_id": "boundary_bush", "position": Vector3(3.0, 0.0, 2.0)}
	]
	root.add_child(adapter)

	var manager: Node = load("res://simulation/SimulationManager.gd").new()
	manager.debug_logs = false
	manager.active_world_adapter = adapter
	root.add_child(manager)
	manager.set_process(false)
	manager.npc_travel_requested.connect(_on_travel_requested)

	var resource_state := ResourceStateRecord.from_dictionary(
		{
			"schema_version": ResourceStateRecord.SCHEMA_VERSION,
			"node_id": "boundary_bush",
			"action_id": String(SimulationIds.ACTION_GATHER_FOOD),
			"resource_id": String(SimulationIds.RESOURCE_FOOD),
			"amount_remaining": 5.0,
			"yield_per_action": 1.0,
			"max_amount": 5.0,
			"regrow_rate": 0.0,
			"reserved_by": -1,
			"enabled": true,
			"can_npcs_use": true,
			"can_player_use": true,
			"safety_risk": 0.0,
			"comfort_distance": 18.0,
			"discovery_priority": 0.0
		}
	)
	manager.resource_states[resource_state.get_node_id()] = resource_state
	var risky_resource_state := ResourceStateRecord.from_dictionary(
		{
			"schema_version": ResourceStateRecord.SCHEMA_VERSION,
			"node_id": "boundary_risky_bush",
			"action_id": String(SimulationIds.ACTION_GATHER_FOOD),
			"resource_id": String(SimulationIds.RESOURCE_FOOD),
			"amount_remaining": 5.0,
			"yield_per_action": 1.0,
			"max_amount": 5.0,
			"regrow_rate": 0.0,
			"reserved_by": -1,
			"enabled": true,
			"can_npcs_use": true,
			"can_player_use": true,
			"safety_risk": 1.0,
			"comfort_distance": 18.0,
			"discovery_priority": 0.0
		}
	)
	manager.resource_states[risky_resource_state.get_node_id()] = risky_resource_state

	var npc: SimNPC = manager.npcs[0]
	npc.energy = 40.0
	npc.set_task(SimulationIds.ACTION_GATHER_FOOD)
	_check(
		manager.resolve_npc_target(npc.id, Vector3.ZERO),
		"Target resolver should resolve a scored resource from adapter facts"
	)
	_check(
		npc.target_id == &"boundary_bush" and resource_state.get_reserved_by() == npc.id,
		"Target resolver should prefer the safer comfortable resource over risky proximity"
	)
	_check(
		travel_requests == [Vector3(3.0, 0.0, 2.0)],
		"Resolution should publish travel without moving a visual itself"
	)

	manager.release_npc_reservation(npc.id)
	adapter.activity_candidates = [
		{"target_id": "study_desk_full", "position": Vector3(1.0, 0.0, 0.0), "capacity": 1},
		{"target_id": "study_desk_open", "position": Vector3(4.0, 0.0, 7.0), "capacity": 1}
	]
	var occupying_npc: SimNPC = manager.npcs[1]
	occupying_npc.set_task(SimulationIds.ACTION_STUDY)
	occupying_npc.target_id = &"study_desk_full"
	occupying_npc.task_state = SimNPC.TASK_STATE_WORKING
	npc.set_task(SimulationIds.ACTION_STUDY)
	_check(
		manager.resolve_npc_target(npc.id, Vector3.ZERO),
		"Target resolver should resolve an activity through the adapter"
	)
	_check(
		npc.target_id == &"study_desk_open" and travel_requests.back() == adapter.activity_position,
		"Activity resolution should skip a full-capacity site and publish the open site's position"
	)
	manager.free()
	adapter.free()


func _on_travel_requested(_npc: SimNPC, target_position: Vector3) -> void:
	travel_requests.append(target_position)


func _helper_result(helper_id: int, action_id: StringName) -> OpportunityHelperResult:
	return (
		OpportunityHelperResult
		. new(
			{
				"opportunity_id": 9,
				"helper_npc_id": helper_id,
				"action_id": action_id,
				"source_id": "",
				"resource_id": SimulationIds.RESOURCE_WOOD,
				"trigger_event_id": 14,
				"trust": 0.7,
				"familiarity": 0.8,
				"uses_inventory": false,
				"available_source_count": 1,
				"profession_match": false,
				"reason": "Knows the need; trust 0.70 toward Neighbour; has 1 finite source",
			}
		)
	)


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