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/v4/squid-4.5.tar.xz"
  sha256 "553edf76d6ee9a1627af9c2be7be850c14cd6836170b3d6c1393fd700d44ccc5"

  bottle do
    sha256 "dc48028ff57b2a850792a9009bfc0d10acdebdeb6153680df1bc659f10c25718" => :mojave
    sha256 "4c10e05a05409468cb46c3f488d943ba5e50213928a53b4324d46502f8f8ec83" => :high_sierra
    sha256 "954bc51b342e278f3192fc136694414d035a39f322e94f1afa8d04ab528b4549" => :sierra
  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://www.squid-cache.org/mail-archive/squid-users/201304/0040.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