class Geocoder::Lookup::Base

def fetch_data(query, reverse = false)
  begin
    parse_raw_data fetch_raw_data(query, reverse)
  rescue SocketError
    warn "Geocoding API connection cannot be established."
  rescue TimeoutError
    warn "Geocoding API not responding fast enough " +
      "(see Geocoder::Configuration.timeout to set limit)."
  end
end

def fetch_raw_data(query, reverse = false)
  url = query_url(query, reverse)
  timeout(Geocoder::Configuration.timeout) do
    Net::HTTP.get_response(URI.parse(url)).body
  end
end

def hash_to_query(hash)
  require 'cgi' unless defined?(CGI) && defined?(CGI.escape)
  hash.collect{ |p| p.map{ |i| CGI.escape i.to_s } * '=' }.sort * '&'
end

def loopback_address?(ip)
  !!(ip == "0.0.0.0" or ip.match(/^127/))
end

def parse_raw_data(raw_data)
  if defined?(ActiveSupport::JSON)
    ActiveSupport::JSON.decode(raw_data)
  else
    begin
      JSON.parse(raw_data)
    rescue
      warn "Geocoding API's response was not valid JSON."
    end
  end
end

def query_url(query, reverse = false)
  fail
end

def result(query, reverse = false)
  fail
end

def result_class
  eval("Geocoder::Result::#{self.class.to_s.split(":").last}")
end

def search(*args)
  if res = result(args.join(","), args.size == 2)
    result_class.new(res)
  end
end