module Wallaby
  # Secure helper
  module SecureHelper
    # Image portrait for given user
    # @param user [Object]
    # @return [String] IMG or I element
    def user_portrait(user = current_user)
      if user.respond_to? :email
        https = "http#{request.ssl? ? 's' : EMPTY_STRING}"
        email_md5 = Digest::MD5.hexdigest user.email.downcase
        image_source = "#{https}://www.gravatar.com/avatar/#{email_md5}"
        image_tag image_source, class: 'hidden-xs user-portrait'
      else
        content_tag :i, nil, class: 'fa fa-user user-portrait'
      end
    end

    # Logout path for given user
    # @param user [Object]
    # @param app [Object]
    # @return [String] HTML anchor element
    def logout_path(user = current_user, app = main_app)
      # TODO: use authenticater
      path =
        if defined? ::Devise
          scope = ::Devise::Mapping.find_scope! user
          "destroy_#{scope}_session_path"
        else
          'logout_path'
        end
      app.public_send path if app.respond_to? path
    end

    # Logout method
    # @return [String, Symbol]
    def logout_method
      # TODO: use authenticater
      method = Array(Devise.sign_out_via).first if defined? Devise
      method || :delete
    end
  end
end