Global settings object with default and environment specific values

settings.rb

# Loads the file config/settings/shared.yml and merges it with config/settings/ENV['SILP_CLOUD'].yml.
# If ENV['SILP_CLOUD'] is not set, local.yml will be loaded as fallback.

class Settings

  include Singleton

  def self.init!(silp_cloud, rails_env)
    rails_root = File.join(File.dirname(__FILE__), '..')

    # Load shared configuration
    shared_file = "#{rails_root}/config/settings/shared.yml"
    shared = _yaml2hash(shared_file)

    # Loading environment depending configuration
    environment_file = "#{rails_root}/config/settings/#{silp_cloud || 'local' }.yml"

    puts "### loading settings: #{environment_file} Rails Env: #{rails_env} ###"
    environment = _yaml2hash(environment_file)

    # Merge shared and environment depending config
    merged = environment[rails_env].merge(shared)

    # Load config hash
    configatron.configure_from_hash(merged)
  end

  def self._yaml2hash(file)
    YAML.load(ERB.new(File.read(file)).result).to_hash
  end

  def self.method_missing(method_sym, *arguments, &block)
    configatron.send(method_sym)
  end

end

Settings.instance # instantiate Settings class