class Crystal < Formula
  desc "Fast and statically typed, compiled language with Ruby-like syntax"
  homepage "https://crystal-lang.org/"

  stable do
    url "https://github.com/crystal-lang/crystal/archive/0.26.0.tar.gz"
    sha256 "e98cf1403d5182fce888a120cda61918c329244765eaa265a17038bbfb217ba3"

    resource "shards" do
      url "https://github.com/crystal-lang/shards/archive/v0.8.1.tar.gz"
      sha256 "75c74ab6acf2d5c59f61a7efd3bbc3c4b1d65217f910340cb818ebf5233207a5"
    end
  end

  bottle do
    sha256 "18af384d3dda852dfc86683c3696ac3d35986ab45a9562fb17f698d422a2c103" => :mojave
    sha256 "42bbf810ed2f3bad9708b596409989265281c32ed801963d99e744c8c9743a34" => :high_sierra
    sha256 "8fa840a8c937bc01eba1bb298255102ff960d9d945bd63b35798ed0b44f53841" => :sierra
    sha256 "8b4bb9364d4d1a367e3e3037584621d525452e84eb46a715f9efa5a6167f2fb7" => :el_capitan
  end

  head do
    url "https://github.com/crystal-lang/crystal.git"

    resource "shards" do
      url "https://github.com/crystal-lang/shards.git"
    end
  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" # std uses it but it's not linked
  depends_on "libyaml" if build.with? "shards"

  resource "boot" do
    url "https://github.com/crystal-lang/crystal/releases/download/0.25.1/crystal-0.25.1-2-darwin-x86_64.tar.gz"
    version "0.25.1-2"
    sha256 "6a72db4b4b9323186b6da3f72c7c4b1aaaa06a036707bd9fe4ffb60575edc6db"
  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"

    system "make", "deps"
    (buildpath/".build").mkpath

    command = ["bin/crystal", "build", "-D", "without_openssl", "-D", "without_zlib", "-o", ".build/crystal", "src/compiler/crystal.cr"]
    command.concat ["--release", "--no-debug"] if build.with? "release"

    system *command

    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