class Gnupg < Formula
  desc "GNU Pretty Good Privacy (PGP) package"
  homepage "https://gnupg.org/"
  url "https://gnupg.org/ftp/gcrypt/gnupg/gnupg-2.2.21.tar.bz2"
  sha256 "61e83278fb5fa7336658a8b73ab26f379d41275bb1c7c6e694dd9f9a6e8e76ec"
  license "GPL-3.0"

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

  bottle do
    sha256 "a42991eca1ff5cc8bd25bdd700c8104c50f09a207b1599c8552662b67a95e36a" => :catalina
    sha256 "a6f32a714e777b8949f5197e2f70744352c1f3f6785e5813c390af1f45cb5e1c" => :mojave
    sha256 "191e614ac845a540c5973f522e2edd7d5d48e2e3f3399cafaf95ef2754a987d3" => :high_sierra
  end

  depends_on "pkg-config" => :build
  depends_on "adns"
  depends_on "gettext"
  depends_on "gnutls"
  depends_on "libassuan"
  depends_on "libgcrypt"
  depends_on "libgpg-error"
  depends_on "libksba"
  depends_on "libusb"
  depends_on "npth"
  depends_on "pinentry"

  def install
    system "./configure", "--disable-dependency-tracking",
                          "--disable-silent-rules",
                          "--prefix=#{prefix}",
                          "--sbindir=#{bin}",
                          "--sysconfdir=#{etc}",
                          "--enable-all-tests",
                          "--enable-symcryptrun",
                          "--with-pinentry-pgm=#{Formula["pinentry"].opt_bin}/pinentry"
    system "make"
    system "make", "check"
    system "make", "install"
  end

  def post_install
    (var/"run").mkpath
    quiet_system "killall", "gpg-agent"
  end

  test do
    (testpath/"batch.gpg").write <<~EOS
      Key-Type: RSA
      Key-Length: 2048
      Subkey-Type: RSA
      Subkey-Length: 2048
      Name-Real: Testing
      Name-Email: testing@foo.bar
      Expire-Date: 1d
      %no-protection
      %commit
    EOS
    begin
      system bin/"gpg", "--batch", "--gen-key", "batch.gpg"
      (testpath/"test.txt").write "Hello World!"
      system bin/"gpg", "--detach-sign", "test.txt"
      system bin/"gpg", "--verify", "test.txt.sig"
    ensure
      system bin/"gpgconf", "--kill", "gpg-agent"
    end
  end
end