Cache enabled value for reloads, use real data for service config

src/state/queries/service-config.ts

@@ -1,5 +1,6 @@
 import {useQuery} from '@tanstack/react-query'
 
+import {STALE} from '#/state/queries'
 import {useAgent} from '#/state/session'
 
 type ServiceConfig = {
@@ -11,16 +12,16 @@ type ServiceConfig = {
 export function useServiceConfigQuery() {
   const agent = useAgent()
   return useQuery<ServiceConfig>({
+    refetchOnWindowFocus: true,
+    staleTime: STALE.MINUTES.ONE,
     queryKey: ['service-config'],
     queryFn: async () => {
       try {
         const {data} = await agent.api.app.bsky.unspecced.getConfig()
         return {
           checkEmailConfirmed: Boolean(data.checkEmailConfirmed),
-          // TODO
-          trendingTopicsEnabled: true, // Boolean(data.trendingTopicsEnabled),
-          // TODO
-          trendingTopicsLangs: ['en'], // data.trendingTopicsLangs ?? [],
+          trendingTopicsEnabled: Boolean(data.trendingTopicsEnabled),
+          trendingTopicsLangs: (data.trendingTopicsLangs ?? []) as string[],
         }
       } catch (e) {
         return {
@@ -30,6 +31,5 @@ export function useServiceConfigQuery() {
         }
       }
     },
-    staleTime: 5 * 60 * 1000,
   })
 }

src/state/trending-config.tsx

@@ -2,6 +2,7 @@ import React from 'react'
 
 import {useLanguagePrefs} from '#/state/preferences/languages'
 import {useServiceConfigQuery} from '#/state/queries/service-config'
+import {device} from '#/storage'
 
 type Context = {
   enabled: boolean
@@ -13,17 +14,23 @@ const Context = React.createContext<Context>({
 
 export function Provider({children}: React.PropsWithChildren<{}>) {
   const langPrefs = useLanguagePrefs()
-  const {data: config} = useServiceConfigQuery()
+  // refetches at most every minute
+  const {data: config, isLoading: isInitialLoad} = useServiceConfigQuery()
   const ctx = React.useMemo<Context>(() => {
-    // TODO maybe default to true
+    // previously cached value
+    const cachedEnabled = device.get(['trendingBetaEnabled'])
+    if (isInitialLoad) {
+      return {enabled: Boolean(cachedEnabled)}
+    }
     const serviceEnabled = Boolean(config?.trendingTopicsEnabled)
     const languageIsSupported = langPrefs.contentLanguages.some(lang => {
       return (config?.trendingTopicsLangs ?? []).includes(lang)
     })
-    return {
-      enabled: serviceEnabled && languageIsSupported,
-    }
-  }, [config, langPrefs])
+    const enabled = serviceEnabled && languageIsSupported
+    // update cache
+    device.set(['trendingBetaEnabled'], enabled)
+    return {enabled}
+  }, [isInitialLoad, config, langPrefs])
   return <Context.Provider value={ctx}>{children}</Context.Provider>
 }
 

src/storage/schema.ts

@@ -8,4 +8,5 @@ export type Device = {
   geolocation?: {
     countryCode: string | undefined
   }
+  trendingBetaEnabled: boolean
 }