require "language/go"

class GitlabCiMultiRunner < Formula
  desc "The official GitLab CI runner written in Go"
  homepage "https://gitlab.com/gitlab-org/gitlab-ci-multi-runner"
  url "https://gitlab.com/gitlab-org/gitlab-ci-multi-runner.git",
      :tag => "v1.7.1",
      :revision => "f896af7df9cf8a70b6413c566a4ab03055735891"
  head "https://gitlab.com/gitlab-org/gitlab-ci-multi-runner.git"

  bottle do
    cellar :any_skip_relocation
    sha256 "75a6c23cb84a63c2da067857381f870fcfaa6cca5e7716955eed7bf18b94d4b4" => :sierra
    sha256 "df13bd86fcaea55c75ad40423a39682f5eda9b93ee999eaf69ad64f8fb1bde3e" => :el_capitan
    sha256 "9996bd4d0abff54e542058dafb0c0e6e7b2a7e12f13f814ccee81f9dd979a1c9" => :yosemite
  end

  depends_on "go" => :build
  depends_on "docker" => :recommended

  go_resource "github.com/jteeuwen/go-bindata" do
    url "https://github.com/jteeuwen/go-bindata.git",
        :revision => "a0ff2567cfb70903282db057e799fd826784d41d"
  end

  resource "prebuilt-x86_64.tar.xz" do
    url "https://gitlab-ci-multi-runner-downloads.s3.amazonaws.com/v1.7.1/docker/prebuilt-x86_64.tar.xz",
        :using => :nounzip
    version "1.7.1"
    sha256 "28ea4c9bf49f1b50659541c8c09fbcccf814211230be235e52babcee61468dbd"
  end

  def install
    ENV["GOPATH"] = buildpath
    dir = buildpath/"src/gitlab.com/gitlab-org/gitlab-ci-multi-runner"
    dir.install buildpath.children
    ENV.prepend_create_path "PATH", buildpath/"bin"
    Language::Go.stage_deps resources, buildpath/"src"

    cd "src/github.com/jteeuwen/go-bindata/go-bindata" do
      system "go", "install"
    end

    cd dir do
      resource("prebuilt-x86_64.tar.xz").stage do
        system "go-bindata", "-pkg", "docker", "-nocompress", "-nomemcopy",
                             "-nometadata", "-o",
                             "#{dir}/executors/docker/bindata.go",
                             "prebuilt-x86_64.tar.xz"
      end

      proj = "gitlab.com/gitlab-org/gitlab-ci-multi-runner"
      commit = Utils.popen_read("git", "rev-parse", "--short", "HEAD").chomp
      branch = version.to_s.split(".")[0..1].join("-") + "-stable"
      system "go", "build", "-ldflags", <<-EOS.undent
             -X #{proj}/common.NAME=gitlab-ci-multi-runner
             -X #{proj}/common.VERSION=#{version}
             -X #{proj}/common.REVISION=#{commit}
             -X #{proj}/common.BRANCH=#{branch}
      EOS

      bin.install "gitlab-ci-multi-runner"
      bin.install_symlink bin/"gitlab-ci-multi-runner" => "gitlab-runner"
      prefix.install_metafiles
    end
  end

  test do
    assert_match version.to_s, shell_output("#{bin}/gitlab-runner --version")
  end
end