defmodule PrymnWeb.ServerLive.Index do
  require Logger

  alias Prymn.{Agents, Servers}

  use PrymnWeb, :live_view

  @impl true
  def mount(_params, _session, socket) do
    servers = Servers.list_servers()
    agents = Agents.from_servers(servers)

    {:ok,
     socket
     |> assign(:servers, servers)
     |> assign(:agents, agents)}
  end

  @impl true
  def render(assigns) do
    ~H"""
    <div class="mx-auto max-w-2xl">
      <.header>
        Your servers
        <small class="block">
          <%= "#{Enum.count(@servers)} servers" %>
        </small>
        <:actions>
          <Button.primary patch={~p"/servers/new"}>Connect a Server</Button.primary>
        </:actions>
      </.header>
      <div class="mt-10 space-y-5" phx-update="replace" id="servers">
        <.link :for={server <- @servers} navigate={~p"/servers/#{server}"} class="group flex">
          <.status_bar agent={@agents[server.id]} />
          <div class="flex-1 rounded-r-lg bg-gray-100 p-5 transition-colors group-hover:bg-black group-hover:text-white">
            <h2 class="text-xl"><%= server.name %></h2>
            <div class="flex flex-row flex-wrap justify-between lg:text-sm">
              <span>IP: <%= server.public_ip || "N/A" %></span>
            </div>
          </div>
        </.link>
      </div>
      <.modal :if={@live_action == :new} id="server-modal" show on_cancel={JS.patch(~p"/servers")}>
        <.live_component module={PrymnWeb.ServerLive.NewServer} id={:new} patch={~p"/servers"} />
      </.modal>
    </div>
    """
  end

  @impl true
  def handle_params(_params, _url, socket) do
    socket =
      case socket.assigns.live_action do
        :new -> assign(socket, :page_title, gettext("Connect a Server"))
        :index -> assign(socket, :page_title, gettext("Listing Servers"))
      end

    {:noreply, socket}
  end

  @impl true
  def handle_info({:connect, %Servers.Server{} = server}, socket) do
    {:noreply,
     socket
     |> update(:servers, fn servers -> [server | servers] end)}
  end

  # def handle_info(%Agents.Agent{} = agent, socket) do
  #   id = String.to_integer(agent.id)
  #   {:noreply, update(socket, :agents, &Map.put(&1, id, agent))}
  # end

  def handle_info(msg, state) do
    Logger.debug("received unexpected message #{inspect(msg)}")
    {:noreply, state}
  end

  defp status_bar(assigns) do
    assigns =
      assign(assigns, :class, [
        "w-3 rounded-l-lg",
        assigns.agent.status == :connected && "bg-teal-500",
        assigns.agent.status == :disconnected && "bg-red-500"
      ])

    ~H"""
    <div class={@class}></div>
    """
  end
end