Refactor notifications to use react-query (#1878)

* Move broadcast channel to lib

* Refactor view/com/post/Post and remove temporary 2 components

* Add useModerationOpts hook

* Refactor notifications to use react-query

* Fix: only trigger updates in useModerationOpts when the values have changed

* Implement unread notification tracking

* Add moderation filtering to notifications

* Handle native/push notifications

* Remove dead code

---------

Co-authored-by: Eric Bailey <git@esb.lol>

src/state/queries/preferences/index.ts

@@ -1,5 +1,11 @@
+import {useEffect, useState} from 'react'
 import {useQuery, useMutation, useQueryClient} from '@tanstack/react-query'
-import {LabelPreference, BskyFeedViewPreference} from '@atproto/api'
+import {
+  LabelPreference,
+  BskyFeedViewPreference,
+  ModerationOpts,
+} from '@atproto/api'
+import isEqual from 'lodash.isequal'
 
 import {track} from '#/lib/analytics/analytics'
 import {getAge} from '#/lib/strings/time'
@@ -15,6 +21,7 @@ import {
   DEFAULT_HOME_FEED_PREFS,
   DEFAULT_THREAD_VIEW_PREFS,
 } from '#/state/queries/preferences/const'
+import {getModerationOpts} from '#/state/queries/preferences/moderation'
 
 export * from '#/state/queries/preferences/types'
 export * from '#/state/queries/preferences/moderation'
@@ -23,7 +30,7 @@ export * from '#/state/queries/preferences/const'
 export const usePreferencesQueryKey = ['getPreferences']
 
 export function usePreferencesQuery() {
-  const {agent} = useSession()
+  const {agent, hasSession} = useSession()
   return useQuery({
     queryKey: usePreferencesQueryKey,
     queryFn: async () => {
@@ -76,9 +83,30 @@ export function usePreferencesQuery() {
       }
       return preferences
     },
+    enabled: hasSession,
   })
 }
 
+export function useModerationOpts() {
+  const {currentAccount} = useSession()
+  const [opts, setOpts] = useState<ModerationOpts | undefined>()
+  const prefs = usePreferencesQuery()
+  useEffect(() => {
+    if (!prefs.data) {
+      return
+    }
+    // only update this hook when the moderation options change
+    const newOpts = getModerationOpts({
+      userDid: currentAccount?.did || '',
+      preferences: prefs.data,
+    })
+    if (!isEqual(opts, newOpts)) {
+      setOpts(newOpts)
+    }
+  }, [prefs.data, currentAccount, opts, setOpts])
+  return opts
+}
+
 export function useClearPreferencesMutation() {
   const {agent} = useSession()
   const queryClient = useQueryClient()