class Haxe < Formula
  desc "Multi-platform programming language"
  homepage "https://haxe.org/"
  url "https://github.com/HaxeFoundation/haxe.git",
      :tag => "3.4.7",
      :revision => "bb7b827a9c135fbfd066da94109a728351b87b92"

  bottle do
    cellar :any
    sha256 "2b58281f88a611b0ae4b9a0b1b0fe6e09182f4a71d5b23fb333660527b37bacc" => :high_sierra
    sha256 "5c5c995444cc9e33aa26fcccbf652623ab6ac3006a33eb0bb1d6ce89b02fb5c0" => :sierra
    sha256 "c57c9af6070a2d33401dac05d8b78c4059a95a3c7e212a9595fb5f49d3208a6a" => :el_capitan
  end

  head do
    url "https://github.com/HaxeFoundation/haxe.git", :branch => "development"
    depends_on "opam" => :build
  end

  depends_on "ocaml" => :build
  depends_on "camlp4" => :build
  depends_on "cmake" => :build
  depends_on "neko"
  depends_on "pcre"

  def install
    ENV["OCAMLPARAM"] = "safe-string=0,_" # OCaml 4.06.0 compat

    # Build requires targets to be built in specific order
    ENV.deparallelize

    if build.head?
      ENV["OPAMROOT"] = buildpath/"opamroot"
      ENV["OPAMYES"] = "1"
      system "opam", "init", "--no-setup"
      system "opam", "config", "exec", "--", "opam", "install", "ocamlfind",
             "sedlex", "xml-light", "extlib", "rope", "ptmap>2.0.1"
      system "opam", "config", "exec", "--", "make", "ADD_REVISION=1"
    else
      system "make", "OCAMLOPT=ocamlopt.opt"
    end

    # Rebuild haxelib as a valid binary
    cd "extra/haxelib_src" do
      system "cmake", "."
      system "make"
    end
    rm "haxelib"
    cp "extra/haxelib_src/haxelib", "haxelib"

    bin.mkpath
    system "make", "install", "INSTALL_BIN_DIR=#{bin}",
           "INSTALL_LIB_DIR=#{lib}/haxe", "INSTALL_STD_DIR=#{lib}/haxe/std"

    # Replace the absolute symlink by a relative one,
    # such that binary package created by homebrew will work in non-/usr/local locations.
    rm bin/"haxe"
    bin.install_symlink lib/"haxe/haxe"
  end

  def caveats; <<~EOS
    Add the following line to your .bashrc or equivalent:
      export HAXE_STD_PATH="#{HOMEBREW_PREFIX}/lib/haxe/std"
    EOS
  end

  test do
    ENV["HAXE_STD_PATH"] = "#{HOMEBREW_PREFIX}/lib/haxe/std"
    system "#{bin}/haxe", "-v", "Std"
    system "#{bin}/haxelib", "version"
  end
end