extends Node

@export var npc_visual_scene: PackedScene
@export var simulation_manager: Node
@export var active_npcs_parent: Node3D

@export var farm_zone: Marker3D
@export var forest_zone: Marker3D
@export var guard_zone: Marker3D
@export var study_zone: Marker3D
@export var rest_zone: Marker3D
@export var food_zone: Marker3D

var active_npc_visuals := {} # sim_id -> NPCVisual

func _ready() -> void:
	call_deferred("spawn_initial_npcs")

func spawn_initial_npcs() -> void:
	if simulation_manager == null:
		push_error("WorldViewManager: simulation_manager is missing")
		return

	if npc_visual_scene == null:
		push_error("WorldViewManager: npc_visual_scene is missing")
		return

	for npc in simulation_manager.npcs:
		spawn_npc_visual(npc)

func spawn_npc_visual(npc: SimNPC) -> void:
	if active_npc_visuals.has(npc.id):
		return

	var visual := npc_visual_scene.instantiate()
	active_npcs_parent.add_child(visual)

	visual.global_position = npc.position
	visual.setup_from_sim(npc)

	active_npc_visuals[npc.id] = visual

func _process(delta: float) -> void:
	update_npc_targets()
	
	
func update_npc_targets() -> void:
	if simulation_manager == null:
		return

	for npc in simulation_manager.npcs:
		if not active_npc_visuals.has(npc.id):
			continue

		var visual = active_npc_visuals[npc.id]
		var target := get_target_for_task(npc.current_task)

		if target != null:
			visual.set_target_position(target.global_position)

func get_target_for_task(task: String) -> Marker3D:
	match task:
		"gather_food":
			return farm_zone
		"gather_wood":
			return forest_zone
		"patrol":
			return guard_zone
		"study":
			return study_zone
		"rest":
			return rest_zone
		"eat":
			return food_zone
		_:
			return rest_zone