class CrystalLang < Formula
  desc "Fast and statically typed, compiled language with Ruby-like syntax"
  homepage "https://crystal-lang.org/"
  url "https://github.com/crystal-lang/crystal/archive/0.20.1.tar.gz"
  sha256 "3792856bfe768421f4f0488dd8717deb0db4c94fee7587d39174f4911ab2c01d"
  head "https://github.com/crystal-lang/crystal.git"

  bottle do
    sha256 "2cba96dff2fc24a82f010a7b3f23e1c84068520a2fe7ec257e4266a8bc5ef4d8" => :sierra
    sha256 "baff3d6fcb9c362ddb09d10ef83126c4b350090f11fd45029d4eabc02affec7a" => :el_capitan
    sha256 "131d7af49cb5e17a63add8d3e824952b03f9caca0f6066c4b66cb50c121dc4c5" => :yosemite
  end

  option "without-release", "Do not build the compiler in release mode"
  option "without-shards", "Do not include `shards` dependency manager"

  depends_on "pkg-config" => :build
  depends_on "libevent"
  depends_on "bdw-gc"
  depends_on "llvm"
  depends_on "pcre"
  depends_on "gmp"
  depends_on "libyaml" if build.with? "shards"

  resource "boot" do
    url "https://github.com/crystal-lang/crystal/releases/download/0.20.0/crystal-0.20.0-1-darwin-x86_64.tar.gz"
    version "0.20.0"
    sha256 "4865c464d37aa4328f1f401e3a66136d8149bad51ef5ecd6fef0d032067e7fee"
  end

  resource "shards" do
    url "https://github.com/crystal-lang/shards/archive/v0.7.1.tar.gz"
    sha256 "31de819c66518479682ec781a39ef42c157a1a8e6e865544194534e2567cb110"
  end

  def install
    (buildpath/"boot").install resource("boot")

    if build.head?
      ENV["CRYSTAL_CONFIG_VERSION"] = Utils.popen_read("git rev-parse --short HEAD").strip
    else
      ENV["CRYSTAL_CONFIG_VERSION"] = version
    end

    ENV["CRYSTAL_CONFIG_PATH"] = prefix/"src:lib:libs"
    ENV.append_path "PATH", "boot/bin"

    if build.with? "release"
      system "make", "crystal", "release=true"
    else
      system "make", "deps"
      (buildpath/".build").mkpath
      system "bin/crystal", "build", "-o", "-D", "without_openssl", "-D", "without_zlib", ".build/crystal", "src/compiler/crystal.cr"
    end

    if build.with? "shards"
      resource("shards").stage do
        system buildpath/"bin/crystal", "build", "-o", buildpath/".build/shards", "src/shards.cr"
      end
      bin.install ".build/shards"
    end

    bin.install ".build/crystal"
    prefix.install "src"
    bash_completion.install "etc/completion.bash" => "crystal"
    zsh_completion.install "etc/completion.zsh" => "crystal"
  end

  test do
    assert_match "1", shell_output("#{bin}/crystal eval puts 1")
  end
end