url_charts.rb

require 'json'
require 'typhoeus'

class UrlCharts

  def initialize(key = nil)
    if !key || key.empty?
      raise 'No API key defined.'
    else
      @api_key = key
    end
  end

  def charturl_url(template_slug, options)
    url = "https://charturl.com/short-urls.json?api_key=#{@api_key}"
    headers = {'Content-Type' => 'application/json'}
    body = {template: template_slug, options: options}.to_json
    surl_response = Typhoeus::Request.post(url, body: body, headers: headers)
    raise("Error creating ShortURL: #{surl_response.inspect}") if !surl_response.success?
    JSON.parse(surl_response.body)['short_url']
  end

  def create_url(slug, data)
    url = charturl_url(slug, data: data)
  end

end