class Linkerd < Formula
  desc "Command-line utility to interact with linkerd"
  homepage "https://linkerd.io"

  url "https://github.com/linkerd/linkerd2.git",
    :tag      => "stable-2.2.1",
    :revision => "5e47cb150a33150e5aeddc6672d8a64701a970de"

  bottle do
    cellar :any_skip_relocation
    sha256 "ee40528c700f1f7de26ee8d85d562d8bf25f4c604d1965384321335b5be515f5" => :mojave
    sha256 "88e7fc735f3edc8899a10dda7fa3e928153588ed8becec1dd9d6fca4073e6a9e" => :high_sierra
    sha256 "48a5ed85ebe67954bf2467ff5ac4a3f217e1416cb753c69846fd88b66e5e8c13" => :sierra
  end

  depends_on "go" => :build

  def install
    ENV["GOPATH"] = buildpath
    ENV["CI_FORCE_CLEAN"] = "1"

    srcpath = buildpath/"src/github.com/linkerd/linkerd2"
    srcpath.install buildpath.children - [buildpath/".brew_home"]

    cd srcpath do
      system "bin/build-cli-bin"
      bin.install "target/cli/darwin/linkerd"

      # Install bash completion
      output = Utils.popen_read("#{bin}/linkerd completion bash")
      (bash_completion/"linkerd").write output

      # Install zsh completion
      output = Utils.popen_read("#{bin}/linkerd completion zsh")
      (zsh_completion/"linkerd").write output

      prefix.install_metafiles
    end
  end

  test do
    run_output = shell_output("#{bin}/linkerd 2>&1")
    assert_match "linkerd manages the Linkerd service mesh.", run_output

    version_output = shell_output("#{bin}/linkerd version --client 2>&1")
    assert_match "Client version: ", version_output
    stable_resource = stable.instance_variable_get(:@resource)
    assert_match stable_resource.instance_variable_get(:@specs)[:tag], version_output if build.stable?

    system "#{bin}/linkerd", "install"
  end
end