feat: elevator backup route summaries

Each station in the list of elevator closures has a backup route
summary, derived from our hand-authored redundancy data. Also, if any
of an elevator's backup ("alternate") elevators are also closed, it is
no longer filtered out of the list, even if it has "nearby" redundancy.

Additional changes:

* Remove some unused fields from the elevator closure widget.

* Simplify how elevator closure widgets are built and avoid unneeded
  data fetching in the event the "current" elevator is closed.

* Add a warning in case conditions we expect to always be true about
  alerts are proven false.

assets/css/v2/elevator/elevator_closures_list.scss

@@ -2,16 +2,15 @@
   display: flex;
   flex: 1;
   flex-direction: column;
+  font-size: 48px;
+  line-height: 64px;
+  color: $cool-black-30;
 
   .in-station-summary {
     position: relative;
     display: flex;
     justify-content: space-between;
     padding: 24px 48px;
-    font-size: 48px;
-    font-weight: 400;
-    line-height: 64px;
-    color: $cool-black-30;
 
     .text {
       margin-right: 82px;
@@ -123,14 +122,18 @@
           }
 
           &__elevator-name {
-            line-height: 64px;
+            font-weight: 500;
           }
 
           &__elevator-name.list-item {
             display: list-item;
             margin-bottom: 8px;
             margin-left: 48px;
           }
+
+          &__summary.important {
+            font-weight: 700;
+          }
         }
       }
     }
@@ -149,12 +152,5 @@
         padding: 0 48px 20px;
       }
     }
-
-    .paging-info-container,
-    .closure-row__elevator-name {
-      font-size: 48px;
-      font-weight: 400;
-      color: $cool-black-30;
-    }
   }
 }

assets/src/components/v2/elevator/current_elevator_closed.tsx

@@ -5,7 +5,6 @@ import makePersistent, {
   WrappedComponentProps,
 } from "Components/v2/persistent_wrapper";
 import PagingIndicators from "Components/v2/elevator/paging_indicators";
-import { type Closure } from "Components/v2/elevator/types";
 import useClientPaging from "Hooks/v2/use_client_paging";
 import useTextResizer from "Hooks/v2/use_text_resizer";
 import CurrentLocationMarker from "Images/svgr_bundled/current-location-marker.svg";
@@ -29,7 +28,6 @@ const PulsatingDot = ({ x, y }: Coordinates) => {
 };
 
 interface Props extends WrappedComponentProps {
-  closure: Closure;
   alternate_direction_text: string;
   accessible_path_direction_arrow: Direction;
   accessible_path_image_url: string | null;

assets/src/components/v2/elevator/elevator_closures_list.tsx

@@ -20,7 +20,7 @@ interface ClosureRowProps {
 }
 
 const ClosureRow = ({
-  station: { id, name, closures, route_icons },
+  station: { id, name, closures, route_icons, summary },
   isCurrentStation,
 }: ClosureRowProps) => {
   return (
@@ -45,9 +45,13 @@ const ClosureRow = ({
             "list-item": closures.length > 1,
           })}
         >
-          {closure.elevator_name} ({closure.elevator_id})
+          {closure.name} ({closure.id})
         </div>
       ))}
+
+      <div className={cx("closure-row__summary", { important: summary })}>
+        {summary ?? "Accessible route available"}
+      </div>
     </div>
   );
 };

assets/src/components/v2/elevator/types.ts

@@ -5,12 +5,10 @@ export type StationWithClosures = {
   name: string;
   route_icons: Pill[];
   closures: Closure[];
+  summary: string | null;
 };
 
 export type Closure = {
   id: string;
-  elevator_name: string;
-  elevator_id: string;
-  description: string;
-  header_text: string;
+  name: string;
 };

lib/screens/alerts/alert.ex

@@ -99,10 +99,7 @@ defmodule Screens.Alerts.Alert do
           | :unknown
 
   @type informed_entity :: %{
-          optional(:facility) => %{
-            id: String.t() | nil,
-            name: String.t() | nil
-          },
+          facility: %{id: String.t(), name: String.t()} | nil,
           stop: String.t() | nil,
           route: String.t() | nil,
           route_type: non_neg_integer() | nil,

lib/screens/alerts/parser.ex

@@ -72,11 +72,14 @@ defmodule Screens.Alerts.Parser do
       stop: get_in(ie, ["stop"]),
       route: get_in(ie, ["route"]),
       route_type: get_in(ie, ["route_type"]),
-      direction_id: get_in(ie, ["direction_id"])
+      direction_id: get_in(ie, ["direction_id"]),
+      facility: nil
     }
   end
 
   defp parse_informed_entity_with_facilities(ie, facilities) do
+    parsed = parse_informed_entity(ie)
+
     facility_id = get_in(ie, ["facility"])
 
     facility_name =
@@ -85,9 +88,11 @@ defmodule Screens.Alerts.Parser do
         :error -> nil
       end
 
-    ie
-    |> parse_informed_entity()
-    |> Map.put(:facility, %{id: facility_id, name: facility_name})
+    if not is_nil(facility_id) and not is_nil(facility_name) do
+      Map.put(parsed, :facility, %{id: facility_id, name: facility_name})
+    else
+      parsed
+    end
   end
 
   defp parse_and_sort_active_periods(periods) do