feat: nginx health check & selector loader.

packages/ui/src/components/busSelector.tsx

@@ -1,5 +1,5 @@
 import { useState, useCallback, useMemo, memo, useEffect, useRef } from 'react'
-import { useQuery } from '@tanstack/react-query'
+import { useQuery, useIsFetching } from '@tanstack/react-query'
 import { useNavigate, generatePath } from 'react-router-dom'
 import { latLng, latLngBounds } from 'leaflet'
 import styled from 'styled-components'
@@ -43,6 +43,8 @@ const BusSelector = memo(function BusSelector({ agencies }: BusSelectorProps) {
   const [routeName, setRouteName] = useState<RouteName>()
   const { dispatch, agency, route, direction, stop } = useGlobals()
   const vehiclesDispatch = useVehiclesDispatch()
+  const vehicleFetches = useIsFetching({ queryKey: ['vehicles'] })
+  const routeVehiclesLoaded = useRef(false)
   const stops = useMemo(() => {
     if (direction && route) {
       return route.stops.filter(({ id }) => direction.stops.includes(id))
@@ -57,7 +59,7 @@ const BusSelector = memo(function BusSelector({ agencies }: BusSelectorProps) {
   const {
     data: routes,
     error: routesError,
-    isLoading: isRoutesLoading
+    isFetching: isRoutesFetching
   } = useQuery({
     queryKey: ['routes', agency?.id],
     queryFn: () => getAllRoutes(agency?.id),
@@ -67,7 +69,7 @@ const BusSelector = memo(function BusSelector({ agencies }: BusSelectorProps) {
   const {
     data: routeConfig,
     error: routeError,
-    isLoading: isRouteLoading
+    isFetching: isRouteFetching
   } = useQuery({
     /**
      * Use two attributes from a route to prevent collisions across agencies.
@@ -156,7 +158,9 @@ const BusSelector = memo(function BusSelector({ agencies }: BusSelectorProps) {
     }
   }, [navigate, dispatch, vehiclesDispatch, agency, route, direction])
   const error = getFirstDataError([routesError, routeError])
-  const isLoading = isRoutesLoading || isRouteLoading
+  const isFetching = isRoutesFetching || isRouteFetching
+  const isPageLoading =
+    isFetching || Boolean(!routeVehiclesLoaded.current && vehicleFetches)
 
   /**
    * Update page title and description.
@@ -286,8 +290,23 @@ const BusSelector = memo(function BusSelector({ agencies }: BusSelectorProps) {
     }
   }, [dispatch, homeStop, agencies, agency, routeName, routes, route, direction, stop])
 
+  /**
+   * These effects are so that the loader only
+   * renders for the first load of vehicles
+   * when the route changes.
+   */
+  useEffect(() => {
+    routeVehiclesLoaded.current = false
+  }, [route])
+
+  useEffect(() => {
+    if (!vehicleFetches && !routeVehiclesLoaded.current) {
+      routeVehiclesLoaded.current = true
+    }
+  }, [vehicleFetches])
+
   return (
-    <Page title="Bus Selector">
+    <Page title="Bus Selector" loading={isPageLoading}>
       {error instanceof Error && <SelectorError err={error} />}
       <Form
         onSubmit={evt => {
@@ -297,26 +316,26 @@ const BusSelector = memo(function BusSelector({ agencies }: BusSelectorProps) {
           agencies={agencies}
           selected={agency}
           onSelect={onSelectAgency}
-          isDisabled={isLoading}
+          isDisabled={isFetching}
         />
         <Routes
           routes={routes}
           selected={routeName}
           onSelect={onSelectRoute}
-          isDisabled={isLoading || !agency}
+          isDisabled={isFetching || !agency}
         />
         <Directions
           directions={route?.directions}
           selected={direction}
           onSelect={onSelectDirection}
-          isDisabled={isLoading || !agency || !route}
+          isDisabled={isFetching || !agency || !route}
         />
         <Stops
           stops={stops}
           selected={stop}
           onClear={onClearStop}
           onSelect={onSelectStop}
-          isDisabled={isLoading || !agency || !route || !direction}
+          isDisabled={isFetching || !agency || !route || !direction}
         />
       </Form>
     </Page>

packages/ui/src/components/dots.tsx

@@ -0,0 +1,12 @@
+import { Loading } from '@busmap/components/loading'
+import { PB90T, PB20T } from '@busmap/components/colors'
+
+import { useTheme } from '@module/settings/contexts/theme.js'
+
+const Dots = () => {
+  const { mode } = useTheme()
+
+  return <Loading indent={2} color={mode === 'dark' ? PB90T : PB20T} />
+}
+
+export { Dots }

packages/ui/src/components/loading.tsx

@@ -1,8 +1,6 @@
 import styled from 'styled-components'
-import { Loading as Dots } from '@busmap/components/loading'
-import { PB20T, PB90T } from '@busmap/components/colors'
 
-import { useTheme } from '../modules/settings/contexts/theme.js'
+import { Dots } from './dots.js'
 
 import type { FC } from 'react'
 
@@ -24,12 +22,10 @@ const Text = styled.p`
   font-size: 1rem;
 `
 const Loading: FC<LoadingProps> = ({ text, useIcon = true }) => {
-  const { mode } = useTheme()
-
   return (
     <Text>
       <span>
-        {text} {useIcon && <Dots indent={2} color={mode === 'dark' ? PB90T : PB20T} />}
+        {text} {useIcon && <Dots />}
       </span>
     </Text>
   )

packages/ui/src/components/page.tsx

@@ -1,10 +1,13 @@
 import styled from 'styled-components'
 
+import { Dots } from './dots.js'
+
 import type { FC, ReactNode } from 'react'
 
 interface PageProps {
   title: string
   className?: string
+  loading?: boolean
   children: ReactNode
 }
 
@@ -23,10 +26,13 @@ const Section = styled.section`
     line-height: 1.25;
   }
 `
-const Page: FC<PageProps> = ({ title, children, className }) => {
+const Page: FC<PageProps> = ({ title, children, className, loading = false }) => {
   return (
     <Section className={className}>
-      <h2>{title}</h2>
+      <h2>
+        {title}
+        {loading && <Dots />}
+      </h2>
       {children}
     </Section>
   )

packages/ui/src/components/profile.tsx

@@ -4,14 +4,14 @@ import { toast } from '@busmap/components/toast'
 import { Button } from '@busmap/components/button'
 import { SignOut } from '@busmap/components/icons/signOut'
 import { PB80T, PB20T, PB90T } from '@busmap/components/colors'
-import { Loading } from '@busmap/components/loading'
 
 import { logout } from '@core/api/authn.js'
 import { useGlobals } from '@core/globals.js'
 import { useStorageDispatch } from '@core/contexts/storage.js'
 import { useTheme } from '@module/settings/contexts/theme.js'
 
 import { Page } from './page.js'
+import { Dots } from './dots.js'
 
 import type { FC } from 'react'
 import type { Mode } from '@busmap/common/types/settings'
@@ -151,7 +151,7 @@ const Profile: FC = () => {
       <div>
         {loading ? (
           <p>
-            Signing you out <Loading indent={2} color={mode === 'dark' ? PB90T : PB20T} />
+            Signing you out <Dots />
           </p>
         ) : (
           <SignOutBtn $mode={mode} disabled={loading} onClick={onClickSignOut}>

packages/ui/src/components/signIn.tsx

@@ -1,17 +1,15 @@
 import { useEffect, useRef, useState } from 'react'
 import styled from 'styled-components'
 import { toast } from '@busmap/components/toast'
-import { Loading } from '@busmap/components/loading'
-import { PB20T, PB90T } from '@busmap/components/colors'
 
 import { login } from '@core/api/authn.js'
 import { useGlobals } from '@core/globals.js'
 import { useStorageDispatch } from '@core/contexts/storage.js'
-import { useTheme } from '@module/settings/contexts/theme.js'
 import { MAX_USER_FAVORITES } from '@module/favorites/common.js'
 import { get as getFavorites } from '@module/favorites/api/get.js'
 
 import { Page } from './page.js'
+import { Dots } from './dots.js'
 
 import type { FC } from 'react'
 import type { RiderFavoriteItem } from '@busmap/common/types/favorites'
@@ -22,7 +20,6 @@ const Note = styled.em`
 const SignIn: FC = () => {
   const ref = useRef<HTMLDivElement>(null)
   const { dispatch } = useGlobals()
-  const { mode } = useTheme()
   const [riderFavorites, setRiderFavorites] = useState<RiderFavoriteItem[]>()
   const [loading, setLoading] = useState(false)
   const storageDispatch = useStorageDispatch()
@@ -81,7 +78,7 @@ const SignIn: FC = () => {
     <Page title="Sign In">
       {loading ? (
         <p>
-          Signing you in <Loading indent={2} color={mode === 'dark' ? PB90T : PB20T} />
+          Signing you in <Dots />
         </p>
       ) : (
         <>

packages/web/default.dev.conf

@@ -18,8 +18,6 @@
     include /etc/nginx/conf.d/core/compression.conf;
 
     location / {
-      resolver 8.8.8.8 valid=30s;
-
       proxy_pass http://dev_server;
       proxy_http_version 1.1;
       proxy_set_header Host $host;

packages/web/templates/default.conf.template

@@ -1,6 +1,4 @@
-# Configuration to stage a production build locally.
-# Known differences:
-# - TODO (when they arise)
+# Configuration to stage a production build.
 
 server {
   # Redirect server configuration
@@ -14,6 +12,7 @@ server {
 
 server {
   listen 443 ssl;
+  listen [::]:443 ssl;
   http2 on;
   server_name ${SERVER_NAME};
   root /var/www/${HOST_NAME};
@@ -22,10 +21,13 @@ server {
   include /etc/nginx/conf.d/core/ssl.conf;
   include /etc/nginx/conf.d/core/compression.conf;
 
-  location / {
-    resolver 8.8.8.8 valid=30s;
+  location = /healthcheck {
+    add_header Content-Type "application/json";
+    return 200 '{"status": "OK"}';
+  }
 
-    location ~ /(authn|restbus|rider|favorite) {
+  location / {
+    location ~ /(authn|restbus|rider|favorite|health) {
       access_log /var/log/nginx/api.log api;
       proxy_pass http://api_server;
       # Allow keepalive to work with the upstream