neiam /gitgud

defmodule GitGudWeb.ActorLive.Show do
  @moduledoc """
  Show a (remote) ActivityPub actor's local cached profile.

  Useful endpoints we surface here:
    * canonical actor URL (link out)
    * preferred username / display name / summary
    * last fetched + status
    * Report this actor button

  The URL form is `/actors/:id` rather than `/@handle@host` because
  multiple remote handles can share the same Person under our local
  `actors.id`. We may add a `/@handle@host` redirector later.
  """

  use GitGudWeb, :live_view

  alias GitGud.Federation.Actor
  alias GitGud.Repo

  @impl true
  def mount(%{"id" => id}, _session, socket) do
    actor = Repo.get!(Actor, id)

    {:ok,
     socket
     |> assign(:actor, actor)
     |> assign(:host, host_of(actor))
     |> assign(:page_title, profile_title(actor))}
  end

  @impl true
  def handle_event(
        "report",
        %{"target_type" => type, "target_id" => id, "reason" => reason},
        socket
      ) do
    case socket.assigns.current_scope && socket.assigns.current_scope.user do
      nil ->
        {:noreply, put_flash(socket, :error, "Sign in to report.")}

      user ->
        case GitGud.Reports.open(user, {type, String.to_integer(id)}, reason) do
          {:ok, _} -> {:noreply, put_flash(socket, :info, "Report submitted. Thanks.")}
          {:error, %Ecto.Changeset{}} -> {:noreply, put_flash(socket, :info, "Already reported.")}
        end
    end
  end

  defp host_of(%Actor{actor_url: url}) when is_binary(url) do
    URI.parse(url).host || "?"
  end

  defp host_of(_), do: "?"

  defp profile_title(actor) do
    name = actor.preferred_username || actor.name || "actor"
    name <> "@" <> host_of(actor)
  end

  @impl true
  def render(assigns) do
    ~H"""
    <Layouts.app flash={@flash} current_scope={@current_scope}>
      <div class="space-y-6 max-w-2xl">
        <header class="flex items-start justify-between gap-3">
          <div>
            <h1 class="text-2xl font-semibold">
              {@actor.name || @actor.preferred_username || "actor"}
            </h1>
            <p class="text-sm opacity-70 font-mono">
              {@actor.preferred_username}@{@host}
              <span class="badge badge-xs ml-2">{@actor.kind}</span>
              <span :if={@actor.status != "active"} class="badge badge-xs badge-warning ml-1">
                {@actor.status}
              </span>
            </p>
            <p class="text-xs opacity-60 mt-1">
              <.link href={@actor.actor_url} class="link link-hover">{@actor.actor_url}</.link>
            </p>
          </div>
          <button
            :if={@current_scope && @current_scope.user && @actor.kind == "remote"}
            type="button"
            phx-click="report"
            phx-value-target_type="actor"
            phx-value-target_id={@actor.id}
            phx-value-reason="abuse"
            class="btn btn-xs btn-ghost opacity-70 hover:opacity-100"
            data-confirm={"Report #{@actor.preferred_username || @actor.name} for abuse?"}
            title="Report this actor"
          >
            <.icon name="hero-flag" class="size-4" /> Report
          </button>
        </header>

        <section :if={@actor.summary} class="prose max-w-none border border-base-300 rounded p-4">
          <p>{@actor.summary}</p>
        </section>

        <section class="text-xs opacity-70 grid grid-cols-2 gap-x-4 gap-y-1">
          <span>Type</span><span>{@actor.actor_type}</span>
          <span :if={@actor.last_fetched_at}>Last fetched</span>
          <span :if={@actor.last_fetched_at}>
            {Calendar.strftime(@actor.last_fetched_at, "%Y-%m-%d %H:%M UTC")}
          </span>
          <span :if={@actor.inbox_url}>Inbox</span>
          <span :if={@actor.inbox_url} class="font-mono break-all">{@actor.inbox_url}</span>
          <span :if={@actor.fetch_error}>Last error</span>
          <span :if={@actor.fetch_error} class="font-mono break-all">{@actor.fetch_error}</span>
        </section>
      </div>
    </Layouts.app>
    """
  end
end