social-security.rb

require 'rubygems'
require 'open-uri'
require File.dirname(__FILE__) + '/gchartrb/lib/gchartrb'

def get_chart(color, data)
  chart = GoogleChart::PieChart.new
  chart.width = 600
  chart.height = 300

  total = data.inject(0) { |sum, (label, value)| sum = sum + value }
  data_with_percentage = data.inject({}) do |data, (label, value)|
    percent = (value/total)*100
    data[label] = percent
    data
  end

  data_with_percentage.each { |label, value| chart.data(label, value) }
  
  url =
    case color
    when :red   then chart.to_url + '&chco=FF0000'
    when :blue  then chart.to_url + '&chco=0000FF'
    end

  open(url).read
end


File.open('onss.png', 'w') do |file|
  file << get_chart(:red, {
    'Cotisations'             => 37_020.6,
    "Subvention de l'Etat"    => 5_523.9,
    "Financement alternatif"  => 10_338.3,
    "Autres recettes"         => 3_399.3
  })
end

File.open('inasti.png', 'w') do |file|
  file << get_chart(:blue, {
    'Cotisations'             => 2_773.8,
    "Subvention de l'Etat"    => 1_123.834,
    "Financement alternatif"  => 662.7,
    'Autres recettes'         => 146.2
  })
end