class_name ActionCommand
extends RefCounted

var _command_id: StringName
var _actor: WorldEntityRef
var _action_id: StringName
var _target: WorldTargetHandle
var _parameters: Dictionary
var _expected_state_revision: int


func _init(
	command_id: StringName = &"",
	actor: Variant = null,
	action_id: StringName = &"",
	target: WorldTargetHandle = null,
	parameters: Dictionary = {},
	expected_state_revision: int = -1
) -> void:
	_command_id = command_id
	_actor = _normalize_actor(actor)
	_action_id = action_id
	_target = target
	_parameters = parameters.duplicate(true)
	_expected_state_revision = expected_state_revision


func is_valid() -> bool:
	return (
		not _command_id.is_empty()
		and _actor != null
		and _actor.is_valid()
		and not _action_id.is_empty()
		and _target != null
		and _target.is_well_formed()
		and _expected_state_revision >= -1
		and not WorldTargetCapability._contains_object(_parameters)
	)


func get_command_id() -> StringName:
	return _command_id


func get_actor_id() -> StringName:
	return _actor.get_entity_id() if _actor != null else &""


func get_actor() -> WorldEntityRef:
	return _actor.duplicate_ref() if _actor != null else null


func get_action_id() -> StringName:
	return _action_id


func get_target() -> WorldTargetHandle:
	return _target


func get_parameters() -> Dictionary:
	return _parameters.duplicate(true)


func get_expected_state_revision() -> int:
	return _expected_state_revision


static func _normalize_actor(actor: Variant) -> WorldEntityRef:
	if actor is WorldEntityRef:
		return (actor as WorldEntityRef).duplicate_ref()
	if actor is StringName or actor is String:
		return WorldEntityRef.create(SimulationIds.ENTITY_PERSON, StringName(actor))
	return null