gistfile1.rb

#!/usr/bin/env ruby
begin
  gem 'geocoder'
rescue
  p "you must install the geocoder gem: `gem install geocoder`, or `sudo gem install geocoder`"
  raise
end

require 'pry'
require 'geocoder'

if ARGF.argv.length != 1
  p "Usage: mapproperties [FILE_PATH]"
  raise
end

# Configure
Geocoder.configure(lookup: :google)

# 0. Load file
addresses = File.readlines(ARGF.argv[0]).map{|line| line.chomp}
pp addresses

# 1. geocode each address
results = addresses.map do |address|
  r = Geocoder.search(address).first
  { "address" => address }.merge(r.geometry['location'])
end


# 2. 1st address = the center
def create_markers(property, *comps)
  property_marker = create_marker(property["lat"], property["lng"], "0", "green")
  comp_markers = comps.map.with_index do |comp, ind|
    create_marker(comp["lat"], comp["lng"], ind + 1)
  end
  (Array(property_marker) + comp_markers).join("&")
end

def create_marker(lat, lng, label, color="red")
  "markers=color:#{color}%7Clabel:#{label}%7C#{lat},#{lng}"
end

markers = create_markers *results

# 3. create points in order of appearance

p "https://maps.googleapis.com/maps/api/staticmap?center=#{results[0]["lat"]},#{results[0]["lng"]}&zoom=13&size=600x300&maptype=roadmap&#{create_markers(*results)}"