<?php

namespace Matrix\Data;

class KeyObject implements \JsonSerializable
{
  /**
   * @param array<string, array> $signatures
   */
  public function __construct(
    private string $key,
    private array $signatures,
    private bool $isFallback = false,
  )
  {}

  public function jsonSerialize(): array
  {
    $keyObject = [
      "key" => $this->key,
      "signatures" => $this->signatures,
    ];

    if ($this->isFallback) {
      $keyObject += [
        "fallback" => true,
      ];
    }

    return $keyObject;
  }
}