class Ethereum < Formula
  desc "Official Go implementation of the Ethereum protocol"
  homepage "https://ethereum.github.io/go-ethereum/"
  url "https://github.com/ethereum/go-ethereum/archive/v1.8.10.tar.gz"
  sha256 "d7e671c9d2203d240b2150f84e1f87759583a6beaa1168234d9c1bd883327ae0"
  head "https://github.com/ethereum/go-ethereum.git"

  bottle do
    cellar :any_skip_relocation
    sha256 "0e5e12c8085aac8e990f7a682dddfe730bbc91a10fe505b78ce948b2840574b7" => :high_sierra
    sha256 "4e80f0fad91782bf0d9f9937971649675946e1f1d660f8bd108a04574576eb8c" => :sierra
    sha256 "4dec427334f4521bcf5f04194d570b1cd38e921e3a04625042753152b1ce671a" => :el_capitan
  end

  depends_on "go" => :build

  def install
    system "make", "all"
    bin.install Dir["build/bin/*"]
  end

  test do
    (testpath/"genesis.json").write <<~EOS
      {
        "config": {
          "homesteadBlock": 10
        },
        "nonce": "0",
        "difficulty": "0x20000",
        "mixhash": "0x00000000000000000000000000000000000000647572616c65787365646c6578",
        "coinbase": "0x0000000000000000000000000000000000000000",
        "timestamp": "0x00",
        "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "extraData": "0x",
        "gasLimit": "0x2FEFD8",
        "alloc": {}
      }
    EOS
    system "#{bin}/geth", "--datadir", "testchain", "init", "genesis.json"
    assert_predicate testpath/"testchain/geth/chaindata/000001.log", :exist?,
                     "Failed to create log file"
  end
end