Live (#8354)

src/lib/actor-status.ts

@@ -0,0 +1,51 @@
+import {useMemo} from 'react'
+import {
+  type $Typed,
+  type AppBskyActorDefs,
+  type AppBskyEmbedExternal,
+} from '@atproto/api'
+import {isAfter, parseISO} from 'date-fns'
+
+import {useMaybeProfileShadow} from '#/state/cache/profile-shadow'
+import {useTickEveryMinute} from '#/state/shell'
+import {temp__canBeLive, temp__isStatusValid} from '#/components/live/temp'
+import type * as bsky from '#/types/bsky'
+
+export function useActorStatus(actor?: bsky.profile.AnyProfileView) {
+  const shadowed = useMaybeProfileShadow(actor)
+  const tick = useTickEveryMinute()
+  return useMemo(() => {
+    tick! // revalidate every minute
+
+    if (
+      shadowed &&
+      temp__canBeLive(shadowed) &&
+      'status' in shadowed &&
+      shadowed.status &&
+      temp__isStatusValid(shadowed.status) &&
+      isStatusStillActive(shadowed.status.expiresAt)
+    ) {
+      return {
+        isActive: true,
+        status: 'app.bsky.actor.status#live',
+        embed: shadowed.status.embed as $Typed<AppBskyEmbedExternal.View>, // temp_isStatusValid asserts this
+        expiresAt: shadowed.status.expiresAt!, // isStatusStillActive asserts this
+        record: shadowed.status.record,
+      } satisfies AppBskyActorDefs.StatusView
+    } else {
+      return {
+        status: '',
+        isActive: false,
+        record: {},
+      } satisfies AppBskyActorDefs.StatusView
+    }
+  }, [shadowed, tick])
+}
+
+export function isStatusStillActive(timeStr: string | undefined) {
+  if (!timeStr) return false
+  const now = new Date()
+  const expiry = parseISO(timeStr)
+
+  return isAfter(expiry, now)
+}