module Cache

=begin

delete a cache

  Cache.delete( 'some_key' )

=end

  def self.delete( key )
    Rails.cache.delete( key.to_s )
  end

=begin

write a cache

  Cache.write(
    'some_key',
    { :some => { :data => { 'structure' } } },
    {
      :expires_in => 24.hours, # optional
    }
  )

=end

  def self.write( key, data, params = {} )
    if !params[:expires_in]
      params[:expires_in] = 24.hours
    end
    begin
      Rails.cache.write( key.to_s, data, params)
    rescue Exception => e
      Rails.logger.error "NOTICE: #{e.message}"
    end
  end

=begin

get a cache

  value = Cache.write( 'some_key' )

=end

  def self.get( key )
    Rails.cache.read( key.to_s )
  end

=begin

clear whole cache store

  Cache.clear

=end

  def self.clear
    # workaround, set test cache before clear whole cache, Rails.cache.clear complains about not existing cache dir
    Cache.write( 'test', 1 )

    Rails.cache.clear
  end
end