class Gmsh < Formula
  desc "3D finite element grid generator with CAD engine"
  homepage "https://gmsh.info/"
  url "https://gmsh.info/src/gmsh-4.2.3-source.tgz"
  sha256 "58a8c8828b66e77680b52feb8a91fb4790d0a93906e411f3bfa1928864e52858"
  head "https://gitlab.onelab.info/gmsh/gmsh.git"

  bottle do
    cellar :any
    sha256 "a07f8f04a788c6a444a700800b7d353a41e3b20b5e67ab086fafd23cbe62649f" => :mojave
    sha256 "0c4a368ac3bb8c72e4f2a2e44bac79daadb2828447165e0ed2e49db0133a7b1f" => :high_sierra
    sha256 "b7d6e26fb366e4aee94027f8983235610ff2063b3a72102284fae17b2bda47d2" => :sierra
  end

  depends_on "cmake" => :build
  depends_on "cairo"
  depends_on "fltk"
  depends_on "gcc" # for gfortran
  depends_on "open-mpi"
  depends_on "opencascade"

  def install
    args = std_cmake_args + %W[
      -DENABLE_OS_SPECIFIC_INSTALL=0
      -DGMSH_BIN=#{bin}
      -DGMSH_LIB=#{lib}
      -DGMSH_DOC=#{pkgshare}/gmsh
      -DGMSH_MAN=#{man}
      -DENABLE_BUILD_LIB=ON
      -DENABLE_BUILD_SHARED=ON
      -DENABLE_NATIVE_FILE_CHOOSER=ON
      -DENABLE_PETSC=OFF
      -DENABLE_SLEPC=OFF
      -DENABLE_OCC=ON
    ]

    ENV["CASROOT"] = Formula["opencascade"].opt_prefix

    mkdir "build" do
      system "cmake", "..", *args
      system "make"
      system "make", "install"

      # Move onelab.py into libexec instead of bin
      mkdir_p libexec
      mv bin/"onelab.py", libexec
    end
  end

  test do
    system "#{bin}/gmsh", "#{share}/doc/gmsh/tutorial/t1.geo", "-parse_and_exit"
  end
end