org.whispersystems.signalservice.api.backup.MediaId.kt Maven / Gradle / Ivy

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Signal Service communication library for Java, unofficial fork

There is a newer version: 2.15.3_unofficial_107

/*
 * Copyright 2024 Signal Messenger, LLC
 * SPDX-License-Identifier: AGPL-3.0-only
 */

package org.whispersystems.signalservice.api.backup

import org.signal.core.util.Base64

/**
 * Safe typing around a mediaId, which is a 15-byte array.
 */
@JvmInline
value class MediaId(val value: ByteArray) {

  constructor(mediaId: String) : this(Base64.decode(mediaId))

  init {
    require(value.size == 15) { "MediaId must be 15 bytes!" }
  }

  /** Encode media-id for use in a URL/request */
  fun encode(): String {
    return Base64.encodeUrlSafeWithPadding(value)
  }
}