class Kustomize < Formula
  desc "Template-free customization of Kubernetes YAML manifests"
  homepage "https://github.com/kubernetes-sigs/kustomize"
  url "https://github.com/kubernetes-sigs/kustomize.git",
      :tag      => "kustomize/v3.4.0",
      :revision => "2c9635967a2b1469d605a91a1d040bd27c73ca7d"
  head "https://github.com/kubernetes-sigs/kustomize.git"

  bottle do
    cellar :any_skip_relocation
    sha256 "bd87ecd0de0280d18e75a3c0f9feaf368d14bb745f41852e712c67e71fcfb529" => :mojave
    sha256 "66232bcc843f42aed0f74bef4ab8aeea97ca69e20b8f2a9c25b046d6559b93d0" => :high_sierra
  end

  depends_on "go" => :build

  def install
    revision = Utils.popen_read("git", "rev-parse", "HEAD").strip

    cd "kustomize" do
      ldflags = %W[
        -s -X sigs.k8s.io/kustomize/api/provenance.version=#{version}
        -X sigs.k8s.io/kustomize/api/provenance.gitCommit=#{revision}
        -X sigs.k8s.io/kustomize/api/provenance.buildDate=#{Time.now.iso8601}
      ]
      system "go", "build", "-ldflags", ldflags.join(" "), "-o", bin/"kustomize"
    end
  end

  test do
    assert_match version.to_s, shell_output("#{bin}/kustomize version")

    (testpath/"kustomization.yaml").write <<~EOS
      resources:
      - service.yaml
      patchesStrategicMerge:
      - patch.yaml
    EOS
    (testpath/"patch.yaml").write <<~EOS
      apiVersion: v1
      kind: Service
      metadata:
        name: brew-test
      spec:
        selector:
          app: foo
    EOS
    (testpath/"service.yaml").write <<~EOS
      apiVersion: v1
      kind: Service
      metadata:
        name: brew-test
      spec:
        type: LoadBalancer
    EOS
    output = shell_output("#{bin}/kustomize build #{testpath}")
    assert_match /type:\s+"?LoadBalancer"?/, output
  end
end