class Traefik < Formula
  desc "Modern reverse proxy"
  homepage "https://traefik.io/"
  url "https://github.com/containous/traefik/releases/download/v1.5.3/traefik-v1.5.3.src.tar.gz"
  version "1.5.3"
  sha256 "3194e721dd739e7be09fdecdf5ec1a70a55f019a773f1698b9d642583668288f"
  head "https://github.com/containous/traefik.git"

  bottle do
    cellar :any_skip_relocation
    rebuild 1
    sha256 "e03833a08674dacb0c498869be4a00f471c046c9d0ec0136a2d6502a0f1eb34f" => :high_sierra
    sha256 "a419b68a45d103000db77949b1fe8e3e4b59e68e24a4bed412d9ab1b6a27e1ad" => :sierra
    sha256 "d67ca87eb2d0f7ec2e173ac0f0d89a17752362c88b72cd07c820274f2cd9e49d" => :el_capitan
  end

  depends_on "go" => :build
  depends_on "go-bindata" => :build
  depends_on "node" => :build
  depends_on "yarn" => :build

  def install
    ENV["GOPATH"] = buildpath
    (buildpath/"src/github.com/containous/traefik").install buildpath.children

    cd "src/github.com/containous/traefik" do
      cd "webui" do
        system "yarn", "install"
        system "yarn", "run", "build"
      end
      system "go", "generate"
      system "go", "build", "-o", bin/"traefik", "./cmd/traefik"
      prefix.install_metafiles
    end
  end

  test do
    require "socket"

    web_server = TCPServer.new(0)
    http_server = TCPServer.new(0)
    web_port = web_server.addr[1]
    http_port = http_server.addr[1]
    web_server.close
    http_server.close

    (testpath/"traefik.toml").write <<~EOS
      [web]
      address = ":#{web_port}"

      [entryPoints.http]
      address = ":#{http_port}"
    EOS

    begin
      pid = fork do
        exec bin/"traefik", "--configfile=#{testpath}/traefik.toml"
      end
      sleep 5
      cmd = "curl -sIm3 -XGET http://localhost:#{web_port}/dashboard/"
      assert_match /200 OK/m, shell_output(cmd)
    ensure
      Process.kill("HUP", pid)
    end
  end
end