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Explore blocks, labels, lists, and posts on Bluesky. skytrace.aly.town
typescript react bluesky atproto
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374import { AppBskyFeedPost } from '@atcute/bluesky'import { isCanonicalResourceUri } from '@atcute/lexicons/syntax'import type { Facet, FeedPost, RawRecord, UnavailableItem } from '../../types'import { tryParseRecordUri } from '../../lib/atproto/uri'import { actorReference, unavailable } from '../recordResults'import { parsedRecord, stringValue } from '../recordValues'
export function decodePostRecord(record: RawRecord): Omit<FeedPost, 'repositoryPds'> | UnavailableItem { const uri = tryParseRecordUri(record.uri) const value = parsedRecord(AppBskyFeedPost.mainSchema, record) if (!uri || !value) return unavailable(record.uri, 'This post is malformed or unavailable.') const embed = value.embed const mediaEmbed = embed?.$type === 'app.bsky.embed.recordWithMedia' ? embed.media : embed let quoteUri: string | undefined if (embed?.$type === 'app.bsky.embed.recordWithMedia') { quoteUri = embed.record.record.uri } else if (embed?.$type === 'app.bsky.embed.record') { quoteUri = embed.record.uri } const replyTo = value.reply?.parent.uri const images = mediaEmbed?.$type === 'app.bsky.embed.images' && mediaEmbed.images.length > 0 ? mediaEmbed.images.map(({ image, alt }) => ({ cid: image.ref.$link, alt })) : undefined const video = mediaEmbed?.$type === 'app.bsky.embed.video' ? { cid: mediaEmbed.video.ref.$link, alt: stringValue(mediaEmbed.alt), mimeType: stringValue(mediaEmbed.video.mimeType), captions: mediaEmbed.captions?.map(({ file, lang }) => ({ cid: file.ref.$link, lang })), } : undefined return { kind: 'post', uri: record.uri, author: actorReference(uri.repo), createdAt: value.createdAt, text: value.text, facets: parseFacets(value.text, value.facets), replyTo: isCanonicalResourceUri(replyTo) ? replyTo : undefined, quoteUri: isCanonicalResourceUri(quoteUri) ? quoteUri : undefined, images, video, }}
export function parseFacets(text: string, facets: AppBskyFeedPost.Main['facets']): Facet[] { if (!facets) return [] const encodedText = new TextEncoder().encode(text) const strictDecoder = new TextDecoder('utf-8', { fatal: true }) const normalized: Facet[] = [] let position = 0 for (const facet of [...facets].sort((left, right) => left.index.byteStart - right.index.byteStart)) { const { byteStart, byteEnd } = facet.index if (byteStart < position || byteEnd <= byteStart || byteEnd > encodedText.length) continue try { strictDecoder.decode(encodedText.subarray(byteStart, byteEnd)) } catch { continue } const features = facet.features.filter( (feature) => feature.$type === 'app.bsky.richtext.facet#link' || feature.$type === 'app.bsky.richtext.facet#mention' || (feature.$type === 'app.bsky.richtext.facet#tag' && stringValue(feature.tag)), ) if (features.length === 0) continue normalized.push({ ...facet, features }) position = byteEnd } return normalized}