class_name KnownEventStateRecord
extends RefCounted

const SCHEMA_VERSION := 1

var data: Dictionary


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


static func create(knower_id: int, event_id: int) -> KnownEventStateRecord:
	return (
		KnownEventStateRecord
		. new(
			{
				"schema_version": SCHEMA_VERSION,
				"knower_id": knower_id,
				"event_id": event_id,
			}
		)
	)


static func from_dictionary(record_data: Dictionary) -> KnownEventStateRecord:
	if int(record_data.get("schema_version", -1)) != SCHEMA_VERSION:
		return null
	if not record_data.has_all(["knower_id", "event_id"]):
		return null
	var knower_id := int(record_data["knower_id"])
	var event_id := int(record_data["event_id"])
	if knower_id < 0 or event_id < 0:
		return null
	return create(knower_id, event_id)


func get_knower_id() -> int:
	return int(data["knower_id"])


func get_event_id() -> int:
	return int(data["event_id"])


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