class Xxh < Formula
  include Language::Python::Virtualenv

  desc "Bring your favorite shell wherever you go through the ssh"
  homepage "https://github.com/xxh/xxh"
  url "https://files.pythonhosted.org/packages/ad/7f/effcf114577d392f270831ab36e5833d071ebf1f494dd5acb7cf3953f5fd/xxh-xxh-0.8.4.tar.gz"
  sha256 "cf6cd0a55bb8befc09b701cf3df226d1e837758bf95110f335359355b4deb96e"
  license "BSD-2-Clause"

  livecheck do
    url :stable
  end

  bottle do
    cellar :any_skip_relocation
    sha256 "2363936330ef4377578a60a1735fe1740c4849cba53f0b698b3c7247b09d470a" => :catalina
    sha256 "ac8f21bed8844e190488e83d76f08a350c8efb7b724d3f55c9bca47ddd975e03" => :mojave
    sha256 "23398378567de59e4a45b37d394467c7980b9db12f3c83ea63ff8da1c0f44c50" => :high_sierra
  end

  depends_on "python@3.8"

  resource "pexpect" do
    url "https://files.pythonhosted.org/packages/e5/9b/ff402e0e930e70467a7178abb7c128709a30dfb22d8777c043e501bc1b10/pexpect-4.8.0.tar.gz"
    sha256 "fc65a43959d153d0114afe13997d439c22823a27cefceb5ff35c2178c6784c0c"
  end

  resource "ptyprocess" do
    url "https://files.pythonhosted.org/packages/7d/2d/e4b8733cf79b7309d84c9081a4ab558c89d8c89da5961bf4ddb050ca1ce0/ptyprocess-0.6.0.tar.gz"
    sha256 "923f299cc5ad920c68f2bc0bc98b75b9f838b93b599941a6b63ddbc2476394c0"
  end

  resource "PyYAML" do
    url "https://files.pythonhosted.org/packages/64/c2/b80047c7ac2478f9501676c988a5411ed5572f35d1beff9cae07d321512c/PyYAML-5.3.1.tar.gz"
    sha256 "b8eac752c5e14d3eca0e6dd9199cd627518cb5ec06add0de9d32baeee6fe645d"
  end

  def install
    virtualenv_install_with_resources
  end

  test do
    assert_match version.to_s, shell_output("#{bin}/xxh --version")

    (testpath/"config.xxhc").write <<~EOS
      hosts:
        test.localhost:
          -o: HostName=127.0.0.1
          +s: xxh-shell-zsh
    EOS
    begin
      port = free_port
      server = TCPServer.new(port)
      server_pid = fork do
        msg = server.accept.gets
        server.close
        assert_match "SSH", msg
      end

      stdout, stderr, = Open3.capture3(
        "#{bin}/xxh", "test.localhost",
        "-p", port.to_s,
        "+xc", "#{testpath}/config.xxhc",
        "+v"
      )

      argv = stdout.lines.grep(/^Final arguments list:/).first.split(":").second
      args = JSON.parse argv.tr("'", "\"")
      assert_include args, "xxh-shell-zsh"

      ssh_argv = stderr.lines.grep(/^ssh arguments:/).first.split(":").second
      ssh_args = JSON.parse ssh_argv.tr("'", "\"")
      assert_include ssh_args, "Port=#{port}"
      assert_include ssh_args, "HostName=127.0.0.1"
      assert_match "Connection closed by remote host", stderr
    ensure
      Process.kill("TERM", server_pid)
    end
  end
end