# Nimbus
# Copyright (c) 2022 Status Research & Development GmbH
# Licensed and distributed under either of
#   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
#   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.

{.used.}

{.push raises: [Defect].}

import
  unittest2, stew/byteutils,
  ../network/header/header_content

suite "Header Gossip ContentKey Encodings":
  test "BlockHeader":
      # Input
      const
        blockHash = BlockHash.fromHex(
          "0xd1c390624d3bd4e409a61a858e5dcc5517729a9170d014a6c96530d64dd8621d")
        blockNumber = 2.stuint(256)

      # Output
      const
        contentKeyHex =
          "00d1c390624d3bd4e409a61a858e5dcc5517729a9170d014a6c96530d64dd8621d0200000000000000000000000000000000000000000000000000000000000000"
        contentId =
          "93053813395975896824800219097617621670658136800980011170166846009189305194644"
        # or
        contentIdHexBE =
          "cdba9789eec7a1994ec7c033c46c2c94242da2c016051bf09240fd9a81589894"

      let contentKey = ContentKey(
        contentType: newBlockHeader,
        newBlockHeaderKey:
          NewBlockHeaderKey(blockHash: blockHash, blockNumber: blockNumber))

      let encoded = encode(contentKey)
      check encoded.asSeq.toHex == contentKeyHex
      let decoded = decode(encoded)
      check decoded.isSome()

      let contentKeyDecoded = decoded.get()
      check:
        contentKeyDecoded.contentType == contentKey.contentType
        contentKeyDecoded.newBlockHeaderKey == contentKey.newBlockHeaderKey

        toContentId(contentKey) == parse(contentId, Stuint[256], 10)
        # In stint this does BE hex string
        toContentId(contentKey).toHex() == contentIdHexBE