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

  desc "Official Amazon AWS command-line interface"
  homepage "https://aws.amazon.com/cli/"
  # awscli should only be updated every 10 releases on multiples of 10
  url "https://github.com/aws/aws-cli/archive/1.15.50.tar.gz"
  sha256 "497457cb08e0c64a2315d23a5d0c0277a96a0c271ce8c9b2f8dc892be417926c"
  head "https://github.com/aws/aws-cli.git", :branch => "develop"

  bottle do
    cellar :any_skip_relocation
    rebuild 1
    sha256 "4ff55bc264d5f8517d6d02c5596ef2bbbe0ca3fe0595684c2f45e0bbdbf04046" => :high_sierra
    sha256 "8c248007ffc883642780b9b28fd7408c4e50c176c3df35bd41b73c37246d3bd5" => :sierra
    sha256 "a9b1ca959a8d226a404f40cd11386d5f92b0cace4a19aa524e5d64f6e072baa4" => :el_capitan
  end

  # Some AWS APIs require TLS1.2, which system Python doesn't have before High
  # Sierra
  depends_on "python"

  def install
    venv = virtualenv_create(libexec, "python3")
    system libexec/"bin/pip", "install", "-v", "--no-binary", ":all:",
                              "--ignore-installed", "PyYAML==3.13", buildpath
    system libexec/"bin/pip", "uninstall", "-y", "awscli"
    venv.pip_install_and_link buildpath
    pkgshare.install "awscli/examples"

    rm Dir["#{bin}/{aws.cmd,aws_bash_completer,aws_zsh_completer.sh}"]
    bash_completion.install "bin/aws_bash_completer"
    zsh_completion.install "bin/aws_zsh_completer.sh"
    (zsh_completion/"_aws").write <<~EOS
      #compdef aws
      _aws () {
        local e
        e=$(dirname ${funcsourcetrace[1]%:*})/aws_zsh_completer.sh
        if [[ -f $e ]]; then source $e; fi
      }
    EOS
  end

  def caveats; <<~EOS
    The "examples" directory has been installed to:
      #{HOMEBREW_PREFIX}/share/awscli/examples
  EOS
  end

  test do
    assert_match "topics", shell_output("#{bin}/aws help")
  end
end