functional ruby

gravatar_service.rb

# frozen_string_literal: true
# original: https://github.com/gitlabhq/gitlabhq/blob/master/app/services/gravatar_service.rb
# Esse módulo pode ser chamado de 3 formas diferentes:
# GravatarService.call('j.doe@gmail.com')
# GravatarService.('j.doe@gmail.com')
# GravatarService['j.doe@gmail.com'] # eu prefiro essa última
module GravatarService
  extend self
  
  def call(email, size: nil, scale: 2, username: nil)
    return unless Gitlab::CurrentSettings.gravatar_enabled?

    identifier = email.presence || username.presence
    return unless identifier

    hash = Digest::MD5.hexdigest(identifier.strip.downcase)
    size = 40 unless size && size > 0

    sprintf gravatar_url,
      hash: hash,
      size: size * scale,
      email: ERB::Util.url_encode(email&.strip || ''),
      username: ERB::Util.url_encode(username&.strip || '')
  end
  alias [] call

  def gitlab_config
    Gitlab.config.gitlab
  end

  def gravatar_config
    Gitlab.config.gravatar
  end

  def gravatar_url
    if gitlab_config.https
      gravatar_config.ssl_url
    else
      gravatar_config.plain_url
    end
  end
end