class Gitup < Formula
  desc "Update multiple git repositories at once"
  homepage "https://github.com/earwig/git-repo-updater"
  url "https://github.com/earwig/git-repo-updater.git",
    :revision => "bf66406c10d3e7654ca3f56f4ec6b57bcc068fea",
    :tag => "v0.4.1"

  bottle do
    cellar :any_skip_relocation
    sha256 "8a11d7864ef368045ba5ebed1580fe3a22f4e04b24f4f24c9678eefbf186afc7" => :high_sierra
    sha256 "8a11d7864ef368045ba5ebed1580fe3a22f4e04b24f4f24c9678eefbf186afc7" => :sierra
    sha256 "c1659d82d045517de16860042a53360b5ce061c8d13e57b8ea15db624ad7289f" => :el_capitan
  end

  depends_on "python@2" if MacOS.version <= :snow_leopard

  resource "colorama" do
    url "https://files.pythonhosted.org/packages/source/c/colorama/colorama-0.3.9.tar.gz"
    sha256 "48eb22f4f8461b1df5734a074b57042430fb06e1d61bd1e11b078c0fe6d7a1f1"
  end

  resource "smmap2" do
    url "https://files.pythonhosted.org/packages/source/s/smmap2/smmap2-2.0.3.tar.gz"
    sha256 "c7530db63f15f09f8251094b22091298e82bf6c699a6b8344aaaef3f2e1276c3"
  end

  resource "gitdb2" do
    url "https://files.pythonhosted.org/packages/source/g/gitdb2/gitdb2-2.0.3.tar.gz"
    sha256 "b60e29d4533e5e25bb50b7678bbc187c8f6bcff1344b4f293b2ba55c85795f09"
  end

  resource "GitPython" do
    url "https://files.pythonhosted.org/packages/source/G/GitPython/GitPython-2.1.8.tar.gz"
    sha256 "ad61bc25deadb535b047684d06f3654c001d9415e1971e51c9c20f5b510076e9"
  end

  def install
    ENV.prepend_create_path "PYTHONPATH", libexec/"vendor/lib/python2.7/site-packages"
    %w[colorama smmap2 gitdb2 GitPython].each do |r|
      resource(r).stage do
        system "python", *Language::Python.setup_install_args(libexec/"vendor")
      end
    end

    ENV.prepend_create_path "PYTHONPATH", libexec/"lib/python2.7/site-packages"
    system "python", *Language::Python.setup_install_args(libexec)

    bin.install Dir[libexec/"bin/*"]
    bin.env_script_all_files(libexec/"bin", :PYTHONPATH => ENV["PYTHONPATH"])
  end

  test do
    def prepare_repo(uri, local_head)
      system "git", "init"
      system "git", "remote", "add", "origin", uri
      system "git", "fetch", "origin"
      system "git", "checkout", local_head
      system "git", "reset", "--hard"
      system "git", "checkout", "-b", "master"
      system "git", "branch", "--set-upstream-to=origin/master", "master"
    end

    first_head_start = "f47ab45abdbc77e518776e5dc44f515721c523ae"
    mkdir "first" do
      prepare_repo("https://github.com/pr0d1r2/homebrew-contrib.git", first_head_start)
    end

    second_head_start = "f863d5ca9e39e524e8c222428e14625a5053ed2b"
    mkdir "second" do
      prepare_repo("https://github.com/pr0d1r2/homebrew-cask-games.git", second_head_start)
    end

    system bin/"gitup", "first", "second"

    first_head = `cd first ; git rev-parse HEAD`.split.first
    assert_not_equal first_head, first_head_start

    second_head = `cd second ; git rev-parse HEAD`.split.first
    assert_not_equal second_head, second_head_start

    third_head_start = "f47ab45abdbc77e518776e5dc44f515721c523ae"
    mkdir "third" do
      prepare_repo("https://github.com/pr0d1r2/homebrew-contrib.git", third_head_start)
    end

    system bin/"gitup", "--add", "third"

    system bin/"gitup"
    third_head = `cd third ; git rev-parse HEAD`.split.first
    assert_not_equal third_head, third_head_start

    assert_match %r{#{Dir.pwd}/third}, `#{bin}/gitup --list`.strip

    system bin/"gitup", "--delete", "#{Dir.pwd}/third"
  end
end