defmodule MicrowavepropWeb.WeatherCaMapLiveTest do
  # async: false because we touch the shared scalar / profile dirs.
  use MicrowavepropWeb.ConnCase, async: false

  import Phoenix.LiveViewTest

  alias Microwaveprop.Propagation.ProfilesFile
  alias Microwaveprop.Weather.GridCache

  setup do
    GridCache.clear()

    on_exit(fn ->
      GridCache.clear()
      ProfilesFile.prune_older_than(~U[2099-12-31 23:59:59Z])
    end)

    :ok
  end

  test "mounts at /weather-ca with Canadian default viewport", %{conn: conn} do
    {:ok, _lv, html} = live(conn, ~p"/weather-ca")

    # Default viewport is centered roughly on central Canada at a low
    # zoom — different from /weather's DFW@z7. The exact numbers are
    # asserted so a routing accident (mounting WeatherMapLive at this
    # path by mistake) is caught.
    assert html =~ ~s(data-initial-lat="55.0")
    assert html =~ ~s(data-initial-lon="-100.0")
    assert html =~ ~s(data-initial-zoom="4")
  end

  test "renders the weather map element with data-source=hrdps", %{conn: conn} do
    {:ok, _lv, html} = live(conn, ~p"/weather-ca")

    # The JS hook reads data-source and appends &source=hrdps to its cell
    # fetches. Without this attribute the page would silently fall back
    # to HRRR-only reads and never show Canadian data.
    assert html =~ ~s(data-source="hrdps")
  end

  test "viewport_changed event push_patches /weather-ca, not /weather", %{conn: conn} do
    {:ok, lv, _html} = live(conn, ~p"/weather-ca")

    render_hook(lv, "viewport_changed", %{"lat" => 60.0, "lon" => -110.0, "zoom" => 5})

    assert_patch(lv, "/weather-ca?layer=temperature&lat=60.0&lon=-110.0&zoom=5")
  end

  test "select_layer push_patches a /weather-ca URL", %{conn: conn} do
    {:ok, lv, _html} = live(conn, ~p"/weather-ca")

    render_hook(lv, "select_layer", %{"layer" => "pwat"})

    assert_patch(lv, "/weather-ca?layer=pwat&lat=55.0&lon=-100.0&zoom=4")
  end
end