lib/nominatim.rb

   1 # frozen_string_literal: true
   2
   3 module Nominatim
   4   require "timeout"
   5
   6   extend ActionView::Helpers::NumberHelper
   7
   8   def self.describe_location(lat, lon, zoom = nil, language = nil)
   9     zoom ||= 14
  10     language ||= http_accept_language.user_preferred_languages.join(",")
  11
  12     Rails.cache.fetch "/nominatim/location/#{lat}/#{lon}/#{zoom}/#{language}" do
  13       url = "#{Settings.nominatim_url}reverse?lat=#{lat}&lon=#{lon}&zoom=#{zoom}&accept-language=#{language}"
  14
  15       begin
  16         response = OSM.http_client.get(URI.parse(url)) do |request|
  17           request.options.timeout = 4
  18         end
  19
  20         results = REXML::Document.new(response.body) if response.success?
  21       rescue StandardError
  22         results = nil
  23       end
  24
  25       if results && result = results.get_text("reversegeocode/result")
  26         result.value
  27       else
  28         "#{number_with_precision(lat, :precision => 3)}, #{number_with_precision(lon, :precision => 3)}"
  29       end
  30     end
  31   end
  32 end