class Stubby < Formula
  desc "DNS privacy enabled stub resolver service based on getdns"
  homepage "https://dnsprivacy.org/wiki/display/DP/DNS+Privacy+Daemon+-+Stubby"
  url "https://github.com/getdnsapi/stubby/archive/v0.3.0.tar.gz"
  sha256 "b37a0e0ec2b7cfcdcb596066a6fd6109e91a2766b17a42c47d3703d9be41d000"
  license "BSD-3-Clause"
  head "https://github.com/getdnsapi/stubby.git", branch: "develop"

  bottle do
    rebuild 1
    sha256 "aaa2e665539768e5095b04cdbbf61b8b865334770e4608f144096f010631d47c" => :catalina
    sha256 "be2d27bc1ceb52f5728c34b179ba4b57593ded2e66c87c4ab26fa6e89ac26ece" => :mojave
    sha256 "437687f0eebd8218424dbefd61988a5ebb9c2a4487c779c36a329deaf2c2ad92" => :high_sierra
  end

  depends_on "cmake" => :build
  depends_on "libtool" => :build
  depends_on "getdns"
  depends_on "libyaml"

  def install
    system "cmake", "-DCMAKE_INSTALL_RUNSTATEDIR=#{HOMEBREW_PREFIX}/var/run/", \
                    "-DCMAKE_INSTALL_SYSCONFDIR=#{HOMEBREW_PREFIX}/etc", ".", *std_cmake_args
    system "make", "install"
  end

  plist_options startup: true, manual: "sudo stubby -C #{HOMEBREW_PREFIX}/etc/stubby/stubby.yml"

  def plist
    <<~EOS
      <?xml version="1.0" encoding="UTF-8"?>
      <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
      <plist version="1.0">
        <dict>
          <key>Label</key>
          <string>#{plist_name}</string>
          <key>KeepAlive</key>
          <true/>
          <key>RunAtLoad</key>
          <true/>
          <key>ProgramArguments</key>
          <array>
            <string>#{opt_bin}/stubby</string>
            <string>-C</string>
            <string>#{etc}/stubby/stubby.yml</string>
          </array>
        </dict>
      </plist>
    EOS
  end

  test do
    assert_predicate etc/"stubby/stubby.yml", :exist?
    (testpath/"stubby_test.yml").write <<~EOS
      resolution_type: GETDNS_RESOLUTION_STUB
      dns_transport_list:
        - GETDNS_TRANSPORT_TLS
        - GETDNS_TRANSPORT_UDP
        - GETDNS_TRANSPORT_TCP
      listen_addresses:
        - 127.0.0.1@5553
      idle_timeout: 0
      upstream_recursive_servers:
        - address_data: 145.100.185.15
        - address_data: 145.100.185.16
        - address_data: 185.49.141.37
    EOS
    output = shell_output("#{bin}/stubby -i -C stubby_test.yml")
    assert_match "bindata for 145.100.185.15", output

    fork do
      exec "#{bin}/stubby", "-C", testpath/"stubby_test.yml"
    end
    sleep 2

    output = shell_output("dig @127.0.0.1 -p 5553 getdnsapi.net")
    assert_match "status: NOERROR", output
  end
end