class Folly < Formula
  desc "Collection of reusable C++ library artifacts developed at Facebook"
  homepage "https://github.com/facebook/folly"
  url "https://github.com/facebook/folly/archive/v2022.10.10.00.tar.gz"
  sha256 "a3f46dde2b951e8dfc01428ac01d2e1cae482d955242abd74d1f4451450a83b2"
  license "Apache-2.0"
  head "https://github.com/facebook/folly.git", branch: "main"

  bottle do
    sha256 cellar: :any,                 arm64_monterey: "d384a94a6f1b43e9ac3329f3c7ce91f40946192df703caca9f1dc75750fd672b"
    sha256 cellar: :any,                 arm64_big_sur:  "9212ac4182c7e7c40766647f88f83772f479533be9c19cbc41f90f0377764252"
    sha256 cellar: :any,                 monterey:       "8a00f67b4be7a1f946b035da79d982a4ff0b005b6f91da3e10ae54e5f75bc693"
    sha256 cellar: :any,                 big_sur:        "b08b37ad4424c41d5102bab98f4a4ede41b43ead128a2855d0a8e72853fcd3d4"
    sha256 cellar: :any,                 catalina:       "e9b6ac16f3420c71e2fee86f971d586050bdfdfd2db9732aab2a4813c2be51f9"
    sha256 cellar: :any_skip_relocation, x86_64_linux:   "8a07c64df5a6c7fcb312343ee22aeaaf4fe0cc822dd75769d8acb3925c71b9b5"
  end

  depends_on "cmake" => :build
  depends_on "pkg-config" => :build
  depends_on "boost"
  depends_on "double-conversion"
  depends_on "fmt"
  depends_on "gflags"
  depends_on "glog"
  depends_on "libevent"
  depends_on "lz4"
  depends_on "openssl@1.1"
  depends_on "snappy"
  depends_on "xz"
  depends_on "zstd"

  on_macos do
    depends_on "llvm" if DevelopmentTools.clang_build_version <= 1100
  end

  fails_with :clang do
    build 1100
    # https://github.com/facebook/folly/issues/1545
    cause <<-EOS
      Undefined symbols for architecture x86_64:
        "std::__1::__fs::filesystem::path::lexically_normal() const"
    EOS
  end

  fails_with gcc: "5"

  def install
    ENV.llvm_clang if OS.mac? && (DevelopmentTools.clang_build_version <= 1100)

    args = std_cmake_args + %W[
      -DCMAKE_LIBRARY_ARCHITECTURE=#{Hardware::CPU.arch}
      -DFOLLY_USE_JEMALLOC=OFF
    ]

    system "cmake", "-S", ".", "-B", "build/shared",
                    "-DBUILD_SHARED_LIBS=ON",
                    "-DCMAKE_INSTALL_RPATH=#{rpath}",
                    *args
    system "cmake", "--build", "build/shared"
    system "cmake", "--install", "build/shared"

    system "cmake", "-S", ".", "-B", "build/static",
                    "-DBUILD_SHARED_LIBS=OFF",
                    *args
    system "cmake", "--build", "build/static"
    lib.install "build/static/libfolly.a", "build/static/folly/libfollybenchmark.a"
  end

  test do
    # Force use of Clang rather than LLVM Clang
    ENV.clang if OS.mac?

    (testpath/"test.cc").write <<~EOS
      #include <folly/FBVector.h>
      int main() {
        folly::fbvector<int> numbers({0, 1, 2, 3});
        numbers.reserve(10);
        for (int i = 4; i < 10; i++) {
          numbers.push_back(i * 2);
        }
        assert(numbers[6] == 12);
        return 0;
      }
    EOS
    system ENV.cxx, "-std=c++14", "test.cc", "-I#{include}", "-L#{lib}",
                    "-lfolly", "-o", "test"
    system "./test"
  end
end