class CrystalLang < Formula
  desc "Fast and statically typed, compiled language with Ruby-like syntax"
  homepage "https://crystal-lang.org/"
  revision 1
  head "https://github.com/crystal-lang/crystal.git"

  stable do
    url "https://github.com/crystal-lang/crystal/archive/0.19.4.tar.gz"
    sha256 "e239afa449744e0381823531f6af66407ba1f4b78767bd67a9bb09d9fcc6b9e4"

    # Remove for > 0.19.4
    # changes already merged upstream to fix compilation with LLVM 3.9
    # https://github.com/crystal-lang/crystal/pull/3439
    patch do
      url "https://github.com/crystal-lang/crystal/commit/13b11d7.patch"
      sha256 "d981515791c48ae7fce0e906b0eec934fd622987a87f0614b3c91c71b0966b66"
    end
  end

  bottle do
    rebuild 1
    sha256 "c4b0dc235c1869d886be08627f39ac16bfc0766420f211099f24db8d7aa22c06" => :sierra
    sha256 "a31e70a472ac213f39bc6365bd59048b73b615a57fadc4420829ed2e87f09fc3" => :el_capitan
    sha256 "be5f69d7050db3c477cab53ba6974b59529797392b3c32e212bb9d34c16af1b3" => :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/0.19.3/crystal-0.19.3-1-darwin-x86_64.tar.gz"
    version "0.19.3"
    sha256 "2c9aebfefe2aca46eeda1e5a3fd6a91e3177af8f324ea23ebf8b5cad3c87ad2d"
  end

  resource "shards" do
    url "https://github.com/ysbaddaden/shards/archive/v0.6.4.tar.gz"
    sha256 "5972f1b40bb3253319f564dee513229f82b0dcb8eea1502ae7dc483a9c6da5a0"
  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:libs:lib"
    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