les/src/main/kotlin/org/apache/tuweni/les/GetReceiptsMessage.kt

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.tuweni.les

import org.apache.tuweni.bytes.Bytes
import org.apache.tuweni.eth.Hash
import org.apache.tuweni.rlp.RLP

internal data class GetReceiptsMessage(val reqID: Long, val blockHashes: List<Hash>) {

  fun toBytes(): Bytes {
    return RLP.encodeList { writer ->
      writer.writeLong(reqID)
      writer.writeList(blockHashes) { eltWriter, hash -> eltWriter.writeValue(hash.toBytes()) }
    }
  }

  companion object {

    fun read(bytes: Bytes): GetReceiptsMessage {
      return RLP.decodeList(
        bytes
      ) { reader ->
        GetReceiptsMessage(
          reader.readLong(),
          reader.readListContents { elementReader -> Hash.fromBytes(elementReader.readValue()) })
      }
    }
  }
}