defmodule MicrowavepropWeb.BeaconLive.Show do
  @moduledoc false
  use MicrowavepropWeb, :live_view

  alias Microwaveprop.Beacons
  alias Microwaveprop.Beacons.Beacon

  @impl true
  def render(assigns) do
    ~H"""
    <Layouts.app flash={@flash} current_scope={@current_scope}>
      <.header>
        {@beacon.callsign}
        <:subtitle>{@beacon.frequency_mhz} MHz &middot; {@beacon.grid}</:subtitle>
        <:actions>
          <.button navigate={~p"/beacons"}>
            <.icon name="hero-arrow-left" />
          </.button>
          <.button
            :if={admin?(@current_scope)}
            variant="primary"
            navigate={~p"/beacons/#{@beacon}/edit?return_to=show"}
          >
            <.icon name="hero-pencil-square" /> Edit
          </.button>
        </:actions>
      </.header>

      <.list>
        <:item title="Frequency (MHz)">{@beacon.frequency_mhz}</:item>
        <:item title="Callsign">{@beacon.callsign}</:item>
        <:item title="Grid">{@beacon.grid}</:item>
        <:item title="Latitude">{@beacon.lat}</:item>
        <:item title="Longitude">{@beacon.lon}</:item>
        <:item title="Power (W)">{@beacon.power_watts}</:item>
        <:item title="Height above ground (m)">{@beacon.height_m}</:item>
      </.list>
    </Layouts.app>
    """
  end

  @impl true
  def mount(%{"id" => id}, _session, socket) do
    if connected?(socket), do: Beacons.subscribe_beacons()

    {:ok,
     socket
     |> assign(:page_title, "Beacon")
     |> assign(:beacon, Beacons.get_beacon!(id))}
  end

  @impl true
  def handle_info({:updated, %Beacon{id: id} = beacon}, %{assigns: %{beacon: %{id: id}}} = socket) do
    {:noreply, assign(socket, :beacon, beacon)}
  end

  def handle_info({:deleted, %Beacon{id: id}}, %{assigns: %{beacon: %{id: id}}} = socket) do
    {:noreply,
     socket
     |> put_flash(:error, "This beacon was deleted.")
     |> push_navigate(to: ~p"/beacons")}
  end

  def handle_info({type, %Beacon{}}, socket) when type in [:created, :updated, :deleted] do
    {:noreply, socket}
  end

  defp admin?(%{user: %{is_admin: true}}), do: true
  defp admin?(_), do: false
end