defmodule ToweropsWeb.Admin.DashboardLive do
  @moduledoc """
  Admin dashboard showing system statistics and recent audit logs.
  """
  use ToweropsWeb, :live_view

  alias Towerops.Admin

  on_mount {ToweropsWeb.UserAuth, :require_superuser}

  @impl true
  def mount(_params, _session, socket) do
    {:ok,
     socket
     |> assign(:page_title, t("Dashboard"))
     |> assign(:timezone, socket.assigns.current_scope.timezone)}
  end

  @impl true
  def handle_params(params, _url, socket) do
    page =
      case Integer.parse(Map.get(params, "page", "1")) do
        {n, _} when n >= 1 -> n
        _ -> 1
      end

    per_page = 10

    user_count = Admin.count_users()
    org_count = Admin.count_organizations()

    # Fetch all recent logs (limited to last 100 for performance)
    all_logs = Admin.list_audit_logs(limit: 100)
    total_count = length(all_logs)
    total_pages = ceil(total_count / per_page)

    # Ensure page is within valid range
    page = max(1, min(page, max(1, total_pages)))

    # Slice logs for current page
    offset = (page - 1) * per_page
    recent_logs = Enum.slice(all_logs, offset, per_page)

    {:noreply,
     socket
     |> assign(:user_count, user_count)
     |> assign(:org_count, org_count)
     |> assign(:recent_logs, recent_logs)
     |> assign(:pagination, %{
       page: page,
       per_page: per_page,
       total_count: total_count,
       total_pages: total_pages
     })}
  end
end