<?php

namespace Matrix\Data\Room;

class AllowCondition implements \JsonSerializable
{
  public function __construct(
    private string $type,
    private ?string $roomId = null,
  )
  {
    if ($type == "m.room.membership" && empty($roomId)) {
      throw new \InvalidArgumentException("room id is required");
    }
  }

  public function jsonSerialize(): array
  {
    return array_filter([
      "room_id" => $this->roomId,
      "type" => $this->type,
    ], fn ($value) => ! is_null($value));
  }
}