class Geocoder::Lookup::Base

def cache
  Geocoder.cache
end

def coordinates?(value)
  !!value.to_s.match(/^[0-9\.\-]+, *[0-9\.\-]+$/)
end

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)
  timeout(Geocoder::Configuration.timeout) do
    url = query_url(query, reverse)
    unless cache and response = cache[url]
      response = Net::HTTP.get_response(URI.parse(url)).body
      if cache
        cache[url] = response
      end
    end
    response
  end
end

def hash_to_query(hash)
  require 'cgi' unless defined?(CGI) && defined?(CGI.escape)
  hash.collect{ |p|
    p[1].nil? ? nil : p.map{ |i| CGI.escape i.to_s } * '='
  }.compact.sort * '&'
end

def loopback_address?(ip)
  !!(ip == "0.0.0.0" or ip.to_s.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 protocol
  "http" + (Geocoder::Configuration.use_https ? "s" : "")
end

def query_url(query, reverse = false)
  fail
end

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

def results(query, reverse = false)
  fail
end

def search(query, *args)
  # convert coordinates as separate arguments to an array
  if query.is_a?(Numeric) and args.first.is_a?(Numeric)
    warn "DEPRECATION WARNING: Instead of passing latitude/longitude as separate arguments to the search method, please pass an array: [#{query},#{args.first}]. The old argument format will not be supported in Geocoder v.1.0."
    query = [query, args.first]
  end
  # if coordinates given as string, turn into array
  query = query.split(/\s*,\s*/) if coordinates?(query)
  if query.is_a?(Array)
    reverse = true
    query = query.join(',')
  else
    reverse = false
  end
  results(query, reverse).map{ |r| result_class.new(r) }
end