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

  desc "Python dependency management tool"
  homepage "https://docs.pipenv.org/"
  url "https://files.pythonhosted.org/packages/aa/74/24afb34771d81294f660e1bc2beb06a7ac674f0798bbac505b7ac856a3ae/pipenv-10.1.0.tar.gz"
  sha256 "3732350e3cd8cc033d66748c418bab4b018dc0a4fcf1687f17a103ac44eac0c6"

  bottle do
    cellar :any_skip_relocation
    sha256 "8b0ce4c9ca0a94d223f0b1de9afa898a5d3f6fe9a9f59f9ebce67102b6e04d96" => :high_sierra
    sha256 "8d6bca54006eac0036ea3c21cb126e338c3d55a09f2bd0c17553eccac3873c54" => :sierra
    sha256 "3844ec0d823c570e81f8e2dcb2aeea26c87b90d218b52dad0d2b9e67224ad05e" => :el_capitan
  end

  depends_on "python3"

  resource "certifi" do
    url "https://files.pythonhosted.org/packages/15/d4/2f888fc463d516ff7bf2379a4e9a552fef7f22a94147655d9b1097108248/certifi-2018.1.18.tar.gz"
    sha256 "edbc3f203427eef571f79a7692bb160a2b0f7ccaa31953e99bd17e307cf63f7d"
  end

  resource "chardet" do
    url "https://files.pythonhosted.org/packages/fc/bb/a5768c230f9ddb03acc9ef3f0d4a3cf93462473795d18e9535498c8f929d/chardet-3.0.4.tar.gz"
    sha256 "84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae"
  end

  resource "idna" do
    url "https://files.pythonhosted.org/packages/f4/bd/0467d62790828c23c47fc1dfa1b1f052b24efdf5290f071c7a91d0d82fd3/idna-2.6.tar.gz"
    sha256 "2c6a5de3089009e3da7c5dde64a141dbc8551d5b7f6cf4ed7c2568d0cc520a8f"
  end

  resource "pew" do
    url "https://files.pythonhosted.org/packages/21/8c/585c136d5c63eb80ece3328eb290d16ccf6d2d55420848d9fc6a07de68ca/pew-1.1.2.tar.gz"
    sha256 "b8312728526c9010295c88215c95a1b1731fdbd1a568f728e069932bd0545611"
  end

  resource "requests" do
    url "https://files.pythonhosted.org/packages/b0/e1/eab4fc3752e3d240468a8c0b284607899d2fbfb236a56b7377a329aa8d09/requests-2.18.4.tar.gz"
    sha256 "9c443e7324ba5b85070c4a818ade28bfabedf16ea10206da1132edaa6dda237e"
  end

  resource "urllib3" do
    url "https://files.pythonhosted.org/packages/ee/11/7c59620aceedcc1ef65e156cc5ce5a24ef87be4107c2b74458464e437a5d/urllib3-1.22.tar.gz"
    sha256 "cc44da8e1145637334317feebd728bd869a35285b93cbb4cca2577da7e62db4f"
  end

  resource "virtualenv" do
    url "https://files.pythonhosted.org/packages/d4/0c/9840c08189e030873387a73b90ada981885010dd9aea134d6de30cd24cb8/virtualenv-15.1.0.tar.gz"
    sha256 "02f8102c2436bb03b3ee6dede1919d1dac8a427541652e5ec95171ec8adbc93a"
  end

  resource "virtualenv-clone" do
    url "https://files.pythonhosted.org/packages/36/66/d95f83255138ded1aec242de5ee51536226fa7b2582a7ce0863fea5dc4f2/virtualenv-clone-0.2.6.tar.gz"
    sha256 "6b3be5cab59e455f08c9eda573d23006b7d6fb41fae974ddaa2b275c93cc4405"
  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` and `pew` 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/pew", libexec/"bin/pip",
                                      libexec/"bin/virtualenv"
    env = {
      :PATH => "#{libexec}/tools:$PATH",
    }
    (bin/"pipenv").write_env_script(libexec/"bin/pipenv", env)
  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["python3"].opt_prefix, Formula["python3"].prefix.realpath
  end

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