defmodule PostlandWeb.FollowersLive do
  use PostlandWeb, :live_view

  alias Postland.Actors
  alias Postland.Follows

  def render(assigns) do
    ~H"""
    <div class="py-4">
      <h3 class="text-base font-semibold">Followers</h3>
      <p :if={@count == 0} class="text-gray-400">
        No one follows you.
      </p>
      <div
        :for={{dom_id, %{confirmed: confirmed, account: account}} <- @streams.accounts}
        class="mt-2"
      >
        <.profile_card
          id={dom_id}
          dom_id={dom_id}
          account={account}
          status={if confirmed, do: :follower_confirmed, else: :follower_pending}
        />
      </div>
    </div>
    """
  end

  def mount(_params, _session, socket) do
    followers =
      Follows.all_followers()
      |> Enum.map(fn follow ->
        %{
          id: follow.follower,
          confirmed: !!follow.confirmed_at,
          account: Actors.actor(follow.follower)
        }
      end)
      |> Enum.reject(&is_nil(&1.account))

    account_count = Enum.count(followers)

    {:ok, socket |> stream(:accounts, followers) |> assign(count: account_count)}
  end

  def handle_event("confirm", %{"id" => id}, socket) do
    request = Follows.get(id, Postland.my_actor_id())

    socket =
      case Follows.record_and_send_acceptance(request) do
        {:ok, _} ->
          request = Follows.get(Postland.my_actor_id(), id)

          acct = %{
            id: request.follower,
            confirmed: !!request.confirmed_at,
            account: Actors.actor(request.follower)
          }

          socket
          |> stream_insert(:accounts, acct)

        _ ->
          put_flash(socket, :error, "An unexpected error occurred.")
      end

    {:noreply, socket}
  end

  def handle_event("reject", %{"id" => id}, socket) do
    request = Follows.get(id, Postland.my_actor_id())

    socket =
      case Follows.record_and_reject(request) do
        {:ok, _} ->
          acct = %{
            id: request.follower,
            confirmed: true,
            account: Actors.actor(request.follower)
          }

          socket
          |> stream_delete(:accounts, acct)
          |> assign(count: socket.assigns.count - 1)

        _ ->
          put_flash(socket, :error, "An unexpected error occurred.")
      end

    {:noreply, socket}
  end
end