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Add Shadow type (#1900)

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Paul Frazee 2023-11-14 12:10:39 -08:00 • committed by GitHub
parent 00f8c8b06d
commit 8e4a3ad5b6
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10 changed files with 54 additions and 21 deletions
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17
src/state/cache/post-shadow.ts vendored
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@ -1,6 +1,8 @@
import {useEffect, useState, useCallback, useRef} from 'react'
import EventEmitter from 'eventemitter3'
import {AppBskyFeedDefs} from '@atproto/api'
import {Shadow} from './types'
export type {Shadow} from './types'
const emitter = new EventEmitter()
@ -22,7 +24,7 @@ interface CacheEntry {
export function usePostShadow(
post: AppBskyFeedDefs.PostView,
ifAfterTS: number,
): AppBskyFeedDefs.PostView | typeof POST_TOMBSTONE {
): Shadow<AppBskyFeedDefs.PostView> | typeof POST_TOMBSTONE {
const [state, setState] = useState<CacheEntry>({
ts: Date.now(),
value: fromPost(post),
@ -53,13 +55,21 @@ export function usePostShadow(
firstRun.current = false
}, [post])
return state.ts > ifAfterTS ? mergeShadow(post, state.value) : post
return state.ts > ifAfterTS
? mergeShadow(post, state.value)
: {...post, isShadowed: true}
}
export function updatePostShadow(uri: string, value: Partial<PostShadow>) {
emitter.emit(uri, value)
}
export function isPostShadowed(
v: AppBskyFeedDefs.PostView | Shadow<AppBskyFeedDefs.PostView>,
): v is Shadow<AppBskyFeedDefs.PostView> {
return 'isShadowed' in v && !!v.isShadowed
}
function fromPost(post: AppBskyFeedDefs.PostView): PostShadow {
return {
likeUri: post.viewer?.like,
@ -73,7 +83,7 @@ function fromPost(post: AppBskyFeedDefs.PostView): PostShadow {
function mergeShadow(
post: AppBskyFeedDefs.PostView,
shadow: PostShadow,
): AppBskyFeedDefs.PostView | typeof POST_TOMBSTONE {
): Shadow<AppBskyFeedDefs.PostView> | typeof POST_TOMBSTONE {
if (shadow.isDeleted) {
return POST_TOMBSTONE
}
@ -86,5 +96,6 @@ function mergeShadow(
like: shadow.likeUri,
repost: shadow.repostUri,
},
isShadowed: true,
}
}