defmodule ServerWeb.OverviewLiveTest do
  use ServerWeb.ConnCase, async: false

  import Phoenix.LiveViewTest
  alias Server.{Hosts, Metrics}

  defp auth(conn), do: Plug.Test.init_test_session(conn, %{authenticated: true})

  describe "mount" do
    test "redirects to /login when unauthenticated", %{conn: conn} do
      assert {:error, {:redirect, %{to: "/login"}}} = live(conn, "/")
    end

    test "renders a card for each host", %{conn: conn} do
      {:ok, {_h1, _}} = Hosts.create_host("pve-01")
      {:ok, {_h2, _}} = Hosts.create_host("pve-02")

      {:ok, _view, html} = live(auth(conn), "/")

      assert html =~ "pve-01"
      assert html =~ "pve-02"

      assert length(Floki.find(Floki.parse_document!(html), "[data-role=host-card]")) == 2
    end

    test "reflects :critical status for a degraded pool", %{conn: conn} do
      {:ok, {host, _}} = Hosts.create_host("pve-01")
      {:ok, _} = Hosts.mark_online(host, "0.1.0")

      payload = %{
        "zfs_pools" => %{
          "pools" => [%{"name" => "rpool", "health" => "DEGRADED", "capacity_percent" => 40}]
        }
      }

      {:ok, _} = Metrics.record_sample(host.id, "fast", DateTime.utc_now(), payload)

      {:ok, _view, html} = live(auth(conn), "/")

      assert html =~ ~r/data-status=\"critical\"/
    end
  end

  describe "pubsub" do
    test "updates the card when a new metric arrives", %{conn: conn} do
      {:ok, {host, _}} = Hosts.create_host("pve-01")
      {:ok, _} = Hosts.mark_online(host, "0.1.0")

      {:ok, view, _html} = live(auth(conn), "/")
      assert render(view) =~ ~r/data-status=\"ok\"/

      payload = %{
        "zfs_pools" => %{
          "pools" => [%{"name" => "rpool", "health" => "DEGRADED", "capacity_percent" => 40}]
        }
      }

      {:ok, _} = Metrics.record_sample(host.id, "fast", DateTime.utc_now(), payload)

      Process.sleep(50)
      assert render(view) =~ ~r/data-status=\"critical\"/
    end
  end
end