class Sysdig < Formula
  desc "System-level exploration and troubleshooting tool"
  homepage "http://www.sysdig.org/"
  url "https://github.com/draios/sysdig/archive/0.2.0.tar.gz"
  sha256 "efade09f94f9e98f177149cde080b5436bb8a3da4e1a664699f2780ba22921ea"

  bottle do
    sha256 "a238526bb2cf7844076733b4dbbe0d0634d0cf09e934b1e26bbda92ccf22e04e" => :el_capitan
    sha256 "25fd82fd5fd43dee5ab86ea8dd0b1a1c5cfb40f9cc05d78e38b9c174f4b211c3" => :yosemite
    sha256 "14f9d4195dea6e616a8b859337339249bc267a4abc7291f887b3777d9db31c35" => :mavericks
  end

  depends_on "cmake" => :build
  depends_on "luajit"

  # More info on https://gist.github.com/juniorz/9986999
  resource "sample_file" do
    url "https://gist.githubusercontent.com/juniorz/9986999/raw/a3556d7e93fa890a157a33f4233efaf8f5e01a6f/sample.scap"
    sha256 "efe287e651a3deea5e87418d39e0fe1e9dc55c6886af4e952468cd64182ee7ef"
  end

  def install
    ENV.libcxx if MacOS.version < :mavericks

    mkdir "build" do
      args = %W[
        -DSYSDIG_VERSION=#{version}
        -DUSE_BUNDLED_LUAJIT=OFF
        -DUSE_BUNDLED_ZLIB=OFF
      ] + std_cmake_args

      system "cmake", "..", *args
      system "make", "install"
    end

    (share/"demos").install resource("sample_file").files("sample.scap")
  end

  test do
    # tests if it can load chisels
    `#{bin}/sysdig -cl`
    assert_equal 0, $?.exitstatus

    # tests if it can read a sample capture file
    # uses a custom output format because evt.time (in default format) is not UTC
    expected_output = "1 open fd=5(<f>/tmp/sysdig/sample.scap) name=sample.scap(/tmp/sysdig/sample.scap) flags=262(O_TRUNC|O_CREAT|O_WRONLY) mode=0"

    assert_equal expected_output, `#{bin}/sysdig -r #{share}/demos/sample.scap -p "%evt.num %evt.type %evt.args" "evt.type=open and evt.arg.name contains /tmp/sysdig/sample.scap"`.strip
    assert_equal 0, $?.exitstatus
  end
end