module BootstrapForm::Components::Hints

def generate_help(name, help_text)
  return if help_text == false
  help_klass ||= "form-text text-muted"
  help_text ||= get_help_text_by_i18n_key(name)
  help_tag ||= :small
  content_tag(help_tag, help_text, class: help_klass) if help_text.present?
end

def get_help_text_by_i18n_key(name)
  return unless object
  partial_scope = if object_class.respond_to?(:model_name)
                    object_class.model_name.name
                  else
                    object_class.name
                  end
  # First check for a subkey :html, as it is also accepted by i18n, and the
  # simple check for name would return an hash instead of a string (both
  # with .presence returning true!)
  help_text = nil
  ["#{name}.html", name, "#{name}_html"].each do |scope|
    break if help_text
    help_text = scoped_help_text(scope, partial_scope)
  end
  help_text
end

def object_class
  if !object.class.is_a?(ActiveModel::Naming) &&
     object.respond_to?(:klass) && object.klass.is_a?(ActiveModel::Naming)
    object.klass
  else
    object.class
  end
end

def scoped_help_text(name, partial_scope)
  underscored_scope = "activerecord.help.#{partial_scope.underscore}"
  downcased_scope = "activerecord.help.#{partial_scope.downcase}"
  help_text = translated_help_text(name, underscored_scope).presence
  help_text ||= if (text = translated_help_text(name, downcased_scope).presence)
                  warn "I18n key '#{downcased_scope}.#{name}' is deprecated, use '#{underscored_scope}.#{name}' instead"
                  text
                end
  help_text
end

def translated_help_text(name, scope)
  ActiveSupport::SafeBuffer.new I18n.t(name, scope: scope, default: "")
end