defimpl Mobilizon.Service.Metadata, for: Mobilizon.Actors.Actor do
  alias Phoenix.HTML
  alias Phoenix.HTML.Tag
  alias Mobilizon.Actors.Actor
  require Logger

  def build_tags(%Actor{} = actor) do
    actor
    |> do_build_tags()
    |> Enum.map(&HTML.safe_to_string/1)
    |> Enum.reduce("", fn tag, acc -> acc <> tag end)
  end

  defp do_build_tags(%Actor{} = actor) do
    [
      Tag.tag(:meta, property: "og:title", content: Actor.display_name_and_username(actor)),
      Tag.tag(:meta, property: "og:url", content: actor.url),
      Tag.tag(:meta, property: "og:description", content: actor.summary),
      Tag.tag(:meta, property: "og:type", content: "profile"),
      Tag.tag(:meta, property: "profile:username", content: actor.preferred_username),
      Tag.tag(:meta, property: "og:image", content: actor.avatar_url),
      Tag.tag(:meta, property: "twitter:card", content: "summary")
    ]
  end
end