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

  desc "Python dependency management tool"
  homepage "https://docs.pipenv.org/"
  url "https://files.pythonhosted.org/packages/fd/e9/01822318551caa0d62a181ba3b10f0f3757bb1e270da97165bd52db92776/pipenv-2018.11.26.tar.gz"
  sha256 "a673e606e8452185e9817a987572b55360f4d28b50831ef3b42ac3cab3fee846"
  revision 2

  bottle do
    cellar :any_skip_relocation
    rebuild 1
    sha256 "df13002254ad48b6586ed47c9c754992dbf669ce630b6c6c90ceca0a79c21e17" => :mojave
    sha256 "41aec81be5fa304ba9cfe4a061ac9088f6d51fac05bc0c6b73afddec431c6bb1" => :high_sierra
    sha256 "d961acb64dbd94b43950f877ce48e0bf519c07b71eed0188acdf81d55876d75c" => :sierra
  end

  depends_on "python"

  resource "certifi" do
    url "https://files.pythonhosted.org/packages/41/b6/4f0cefba47656583217acd6cd797bc2db1fede0d53090fdc28ad2c8e0716/certifi-2018.10.15.tar.gz"
    sha256 "6d58c986d22b038c8c0df30d639f23a3e6d172a05c3583e766f4c0b785c0986a"
  end

  resource "virtualenv" do
    url "https://files.pythonhosted.org/packages/8b/f4/360aa656ddb0f4168aeaa1057d8784b95d1ce12f34332c1cf52420b6db4e/virtualenv-16.3.0.tar.gz"
    sha256 "729f0bcab430e4ef137646805b5b1d8efbb43fe53d4a0f33328624a84a5121f7"
  end

  resource "virtualenv-clone" do
    url "https://files.pythonhosted.org/packages/14/2f/84b6a8e380439cdfdb71e0ced2a805a66e343ac540d3304bde6bc28fbb46/virtualenv-clone-0.3.0.tar.gz"
    sha256 "b5cfe535d14dc68dfc1d1bb4ac1209ea28235b91156e2bba8e250d291c3fb4f8"
  end

  def install
    # Using the virtualenv DSL here because the alternative of using
    # write_env_script to set a PYTHONPATH breaks things.
    # https://github.com/Homebrew/homebrew-core/pull/19060#issuecomment-338397417
    venv = virtualenv_create(libexec, "python3")
    venv.pip_install resources
    venv.pip_install buildpath

    # `pipenv` needs to be able to find `virtualenv` on PATH. So we
    # install symlinks for those scripts in `#{libexec}/tools` and create a
    # wrapper script for `pipenv` which adds `#{libexec}/tools` to PATH.
    (libexec/"tools").install_symlink libexec/"bin/pip", libexec/"bin/virtualenv"
    env = {
      :PATH => "#{libexec}/tools:$PATH",
    }
    (bin/"pipenv").write_env_script(libexec/"bin/pipenv", env)

    output = Utils.popen_read("SHELL=bash #{libexec}/bin/pipenv --completion")
    (bash_completion/"pipenv").write output

    output = Utils.popen_read("SHELL=zsh #{libexec}/bin/pipenv --completion")
    (zsh_completion/"_pipenv").write output
  end

  # Avoid relative paths
  def post_install
    lib_python_path = Pathname.glob(libexec/"lib/python*").first
    lib_python_path.each_child do |f|
      next unless f.symlink?

      realpath = f.realpath
      rm f
      ln_s realpath, f
    end
    inreplace lib_python_path/"orig-prefix.txt",
              Formula["python"].opt_prefix, Formula["python"].prefix.realpath
  end

  test do
    ENV["LC_ALL"] = "en_US.UTF-8"
    assert_match "Commands", shell_output("#{bin}/pipenv")
    system "#{bin}/pipenv", "install", "requests"
    system "#{bin}/pipenv", "install", "boto3"
    assert_predicate testpath/"Pipfile", :exist?
    assert_predicate testpath/"Pipfile.lock", :exist?
    assert_match "requests", (testpath/"Pipfile").read
    assert_match "boto3", (testpath/"Pipfile").read
  end
end