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/1.14.50.tar.gz"
  sha256 "d5705a1c04ce2b9fb6ca6faea3865f5519696b1449064a061eaf5ac35a590ba7"
  revision 2
  head "https://github.com/aws/aws-cli.git", :branch => "develop"

  bottle do
    cellar :any_skip_relocation
    sha256 "aa32f8856b2e2bfe28bf7a7ebccfc999910b2d14e38c4e3b2e32244459b0a1b9" => :high_sierra
    sha256 "eb7800c530ee85a6cd9a8eea119121e10104562502d887a931e0e6380690f15e" => :sierra
    sha256 "dc32300892c0b736beb56a44f7ba8b954cb68c8e81f4df9240fed168be18e4cf" => :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", 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