class Squid < Formula
  desc "Advanced proxy caching server for HTTP, HTTPS, FTP, and Gopher"
  homepage "http://www.squid-cache.org/"
  url "http://www.squid-cache.org/Versions/v3/3.5/squid-3.5.28.tar.xz"
  sha256 "fd41b622e65c661ada9a98b0338c59e6f2d2ffdb367fe5c8c7212c535e298ed8"

  bottle do
    sha256 "153519db601c1579c3b845723a7db4ce034a5df6ded7b23e10a33ba886b03893" => :high_sierra
    sha256 "d112d9cb8fc0de514eb4affaedda4e7df11a6d2927b2e072143860e4dcab74e2" => :sierra
    sha256 "dc110f871460f553c232e41e62097447ec0ba3da35a6395ff2c521e51ba47c73" => :el_capitan
  end

  head do
    url "lp:squid", :using => :bzr

    depends_on "autoconf" => :build
    depends_on "automake" => :build
    depends_on "libtool" => :build
  end

  depends_on "openssl"

  def install
    # https://stackoverflow.com/questions/20910109/building-squid-cache-on-os-x-mavericks
    ENV.append "LDFLAGS", "-lresolv"

    # For --disable-eui, see:
    # http://squid-web-proxy-cache.1019090.n4.nabble.com/ERROR-ARP-MAC-EUI-operations-not-supported-on-this-operating-system-td4659335.html
    args = %W[
      --disable-debug
      --disable-dependency-tracking
      --prefix=#{prefix}
      --localstatedir=#{var}
      --sysconfdir=#{etc}
      --enable-ssl
      --enable-ssl-crtd
      --disable-eui
      --enable-pf-transparent
      --with-included-ltdl
      --with-openssl
      --enable-delay-pools
      --enable-disk-io=yes
      --enable-removal-policies=yes
      --enable-storeio=yes
    ]

    system "./bootstrap.sh" if build.head?
    system "./configure", *args
    system "make", "install"
  end

  plist_options :manual => "squid"

  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>KeepAlive</key>
      <true/>
      <key>Label</key>
      <string>#{plist_name}</string>
      <key>ProgramArguments</key>
      <array>
        <string>#{opt_sbin}/squid</string>
        <string>-N</string>
        <string>-d 1</string>
      </array>
      <key>RunAtLoad</key>
      <true/>
      <key>WorkingDirectory</key>
      <string>#{var}</string>
    </dict>
    </plist>
  EOS
  end

  test do
    # This test should start squid and then check it runs correctly.
    # However currently dies under the sandbox and "Current Directory"
    # seems to be set hard on HOMEBREW_PREFIX/var/cache/squid.
    # https://github.com/Homebrew/homebrew/pull/44348#issuecomment-143477353
    # If you can fix this, please submit a PR. Thank you!
    assert_match version.to_s, shell_output("#{sbin}/squid -v")
  end
end
