class_name ResourceStateRecord
extends RefCounted

const SCHEMA_VERSION := 1

var data: Dictionary

func _init(record_data: Dictionary = {}) -> void:
	data = record_data.duplicate(true)

static func capture(node: ResourceNode) -> ResourceStateRecord:
	return ResourceStateRecord.new({
		"schema_version": SCHEMA_VERSION,
		"node_id": String(node.node_id),
		"amount_remaining": node.amount_remaining,
		"reserved_by": node.reserved_by,
		"enabled": node.enabled
	})

static func from_dictionary(record_data: Dictionary) -> ResourceStateRecord:
	if int(record_data.get("schema_version", -1)) != SCHEMA_VERSION:
		return null
	if not record_data.has_all([
		"node_id", "amount_remaining", "reserved_by", "enabled"
	]):
		return null
	if String(record_data["node_id"]).is_empty():
		return null
	return ResourceStateRecord.new(record_data)

func restore(node: ResourceNode) -> bool:
	if node == null or node.node_id != StringName(data["node_id"]):
		return false
	node.restore_persistent_state(
		float(data["amount_remaining"]),
		int(data["reserved_by"]),
		bool(data["enabled"])
	)
	return true

func to_dictionary() -> Dictionary:
	return data.duplicate(true)