class Qemu < Formula
  desc "Generic machine emulator and virtualizer"
  homepage "https://www.qemu.org/"
  url "https://download.qemu.org/qemu-9.0.2.tar.xz"
  sha256 "a8c3f596aece96da3b00cafb74baafa0d14515eafb8ed1ee3f7f5c2d0ebf02b6"
  license "GPL-2.0-only"
  head "https://gitlab.com/qemu-project/qemu.git", branch: "master"

  livecheck do
    url "https://www.qemu.org/download/"
    regex(/href=.*?qemu[._-]v?(\d+(?:\.\d+)+)\.t/i)
  end

  bottle do
    sha256 arm64_sonoma:   "f7c729dfe2f6ff174b0e68ef67f6904f7228167f9fa138f05ea56fcc876f2861"
    sha256 arm64_ventura:  "20c6cc71639d1c2db5333ceeb9a5d8ddffbb96c02599a1f6fdca1ddfc088481e"
    sha256 arm64_monterey: "80be85976762b70be78b797254e58bf095d49cc5bf8b3e28e61a8743c76f961e"
    sha256 sonoma:         "8b4446ccb692293a7d6f7b5950739f2e33477e75d03e86c1400bdeb2ff9b328e"
    sha256 ventura:        "9fd7800fc9eb9821615e556f53f0735d88455afef8baa2ed98c8f9eebbd840d5"
    sha256 monterey:       "a3491a35f409c26099e6f2a4d1c640d1349ea23478bd72cd85e3b38e68e04902"
    sha256 x86_64_linux:   "333b9bc3a3e36feae843fec7383187ee3799a2e443d4c644f4674064a6bc28cb"
  end

  depends_on "libtool" => :build
  depends_on "meson" => :build
  depends_on "ninja" => :build
  depends_on "pkg-config" => :build
  depends_on "spice-protocol" => :build

  depends_on "capstone"
  depends_on "dtc"
  depends_on "glib"
  depends_on "gnutls"
  depends_on "jpeg-turbo"
  depends_on "libpng"
  depends_on "libslirp"
  depends_on "libssh"
  depends_on "libusb"
  depends_on "lzo"
  depends_on "ncurses"
  depends_on "nettle"
  depends_on "pixman"
  depends_on "snappy"
  depends_on "vde"
  depends_on "zstd"

  uses_from_macos "bison" => :build
  uses_from_macos "flex" => :build
  uses_from_macos "bzip2"
  uses_from_macos "zlib"

  on_linux do
    depends_on "attr"
    depends_on "cairo"
    depends_on "elfutils"
    depends_on "gdk-pixbuf"
    depends_on "gtk+3"
    depends_on "libcap-ng"
    depends_on "libepoxy"
    depends_on "libx11"
    depends_on "libxkbcommon"
    depends_on "mesa"
    depends_on "systemd"
  end

  fails_with gcc: "5"

  def install
    ENV["LIBTOOL"] = "glibtool"

    args = %W[
      --prefix=#{prefix}
      --cc=#{ENV.cc}
      --host-cc=#{ENV.cc}
      --disable-bsd-user
      --disable-guest-agent
      --enable-slirp
      --enable-capstone
      --enable-curses
      --enable-fdt=system
      --enable-libssh
      --enable-vde
      --enable-virtfs
      --enable-zstd
      --extra-cflags=-DNCURSES_WIDECHAR=1
      --disable-sdl
    ]

    # Sharing Samba directories in QEMU requires the samba.org smbd which is
    # incompatible with the macOS-provided version. This will lead to
    # silent runtime failures, so we set it to a Homebrew path in order to
    # obtain sensible runtime errors. This will also be compatible with
    # Samba installations from external taps.
    args << "--smbd=#{HOMEBREW_PREFIX}/sbin/samba-dot-org-smbd"

    args += if OS.mac?
      ["--disable-gtk", "--enable-cocoa"]
    else
      ["--enable-gtk"]
    end

    system "./configure", *args
    system "make", "V=1", "install"
  end

  test do
    # 820KB floppy disk image file of FreeDOS 1.2, used to test QEMU
    resource "homebrew-test-image" do
      url "https://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/1.2/official/FD12FLOPPY.zip"
      sha256 "81237c7b42dc0ffc8b32a2f5734e3480a3f9a470c50c14a9c4576a2561a35807"
    end

    expected = build.stable? ? version.to_s : "QEMU Project"
    archs = %w[
      aarch64 alpha arm cris hppa i386 m68k microblaze microblazeel mips
      mips64 mips64el mipsel nios2 or1k ppc ppc64 riscv32 riscv64 rx
      s390x sh4 sh4eb sparc sparc64 tricore x86_64 xtensa xtensaeb
    ]
    archs.each do |guest_arch|
      assert_match expected, shell_output("#{bin}/qemu-system-#{guest_arch} --version")
    end

    resource("homebrew-test-image").stage testpath
    assert_match "file format: raw", shell_output("#{bin}/qemu-img info FLOPPY.img")

    # On macOS, verify that we haven't clobbered the signature on the qemu-system-x86_64 binary
    if OS.mac?
      output = shell_output("codesign --verify --verbose #{bin}/qemu-system-x86_64 2>&1")
      assert_match "valid on disk", output
      assert_match "satisfies its Designated Requirement", output
    end
  end
end