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/0.21.1.tar.gz"
  sha256 "eb93de3b388641fd2a09a2d10ab9fe40a58148d888fc48e4583a86ee1ddb1085"
  head "https://github.com/crystal-lang/crystal.git"

  bottle do
    sha256 "0f4c98bf5cd0c534587528473f4295273bec7cd3cc737beea5a2b5eed5521172" => :sierra
    sha256 "44c62fa6b08bc6ffc22c561ad0225e3b4706b0506e2c09b6aff6569564bc8902" => :el_capitan
    sha256 "390081b2797ab592efa13f70973b908347221510c31d3f78ba6f122839177a44" => :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 "libatomic_ops" => :build # for building bdw-gc
  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/0.21.0/crystal-0.21.0-1-darwin-x86_64.tar.gz"
    version "0.21.0"
    sha256 "e92abb33a9a592febb4e629ad68375b2577acd791a71220b8dc407904be469ee"
  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"
    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