class Geoip < Formula
  desc "This library is for the GeoIP Legacy format (dat)"
  homepage "https://github.com/maxmind/geoip-api-c"
  url "https://github.com/maxmind/geoip-api-c/releases/download/v1.6.12/GeoIP-1.6.12.tar.gz"
  sha256 "1dfb748003c5e4b7fd56ba8c4cd786633d5d6f409547584f6910398389636f80"
  head "https://github.com/maxmind/geoip-api-c.git"

  bottle do
    sha256 "d987cf2490017aaf11d23a8ec2f443c408020159e7521064ffec3ac5fb840fe8" => :mojave
    sha256 "f6a895c01acdcc30efb1efe0b6a663e89cd86ce93a1543fb4e39b37c9f2ab2b0" => :high_sierra
    sha256 "00d3f48b250bddd07224b7d3422d36fa5374e27130ec6002f321146920ce711b" => :sierra
    sha256 "9bf37c2b6e7fa5971cd5a029fd6390a830a063b746b0556384019fced6dff534" => :el_capitan
  end

  depends_on "geoipupdate" => :optional

  def install
    system "./configure", "--disable-dependency-tracking",
                          "--disable-silent-rules",
                          "--datadir=#{var}",
                          "--prefix=#{prefix}"
    system "make", "check"
    system "make", "install"
  end

  def post_install
    geoip_data = Pathname.new "#{var}/GeoIP"
    geoip_data.mkpath

    # Since default data directory moved, copy existing DBs
    legacy_data = Pathname.new "#{HOMEBREW_PREFIX}/share/GeoIP"
    cp Dir["#{legacy_data}/*"], geoip_data if legacy_data.exist?

    full = Pathname.new "#{geoip_data}/GeoIP.dat"
    ln_s "GeoLiteCountry.dat", full unless full.exist? || full.symlink?
    full = Pathname.new "#{geoip_data}/GeoIPCity.dat"
    ln_s "GeoLiteCity.dat", full unless full.exist? || full.symlink?
  end

  test do
    system "curl", "-O", "https://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz"
    system "gunzip", "GeoIP.dat.gz"
    system "#{bin}/geoiplookup", "-f", "GeoIP.dat", "8.8.8.8"
  end
end