Samuel Newman
120 lines
3.4 KiB
TypeScript
120 lines
3.4 KiB
TypeScript
import {useLingui} from '@lingui/react/macro'
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import * as bsky from '#/types/bsky'
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import {app, chat} from '#/lexicons'
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import {BSKY_APP_HOST, toShortUrl} from '#/lib/strings/url-helpers'
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/**
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* Describes the embed of a quoted message that has no text of its own, so the
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* reply preview can show what was shared instead of a generic placeholder. For
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* a link card we surface the URI directly; otherwise we classify the quoted
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* record (post/feed/list/etc.) so the caller can render a translated label.
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*/
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type ReplyEmbedSummary =
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| {type: 'external'; uri: string}
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| {type: 'post'}
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| {type: 'unknown'}
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function summarizeReplyEmbed(
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embed: chat.bsky.convo.defs.MessageView['embed'],
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): ReplyEmbedSummary {
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if (!bsky.isType(app.bsky.embed.record.view, embed)) return {type: 'unknown'}
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const {record} = embed
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if (bsky.isType(app.bsky.embed.record.viewRecord, record)) {
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const inner = record.embeds?.[0]
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if (bsky.isType(app.bsky.embed.external.view, inner)) {
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return {type: 'external', uri: inner.external.uri}
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}
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return {type: 'post'}
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}
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return {type: 'unknown'}
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}
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/**
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* Returns a formatter that computes the preview text for a message being quoted
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* in a reply, shared between the staged-reply composer and the sent reply
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* bubble so the two stay in sync. When the message has its own text we use it
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* verbatim; otherwise we summarize the embed.
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*
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* `subtle` indicates the text is a placeholder (not real message content), so
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* callers can render it in a muted/italic style.
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*/
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export function useReplyPreviewText(): (
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message: chat.bsky.convo.defs.MessageView,
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) => {text: string; subtle: boolean} {
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const {t: l} = useLingui()
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return (message: chat.bsky.convo.defs.MessageView) => {
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const text = message.text
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if (text.trim()) {
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return {text, subtle: false}
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}
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if (bsky.isType(chat.bsky.embed.joinLink.view, message.embed)) {
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const {joinLinkPreview} = message.embed
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if (
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bsky.isType(chat.bsky.group.defs.joinLinkPreviewView, joinLinkPreview)
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) {
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return {
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text: `${BSKY_APP_HOST}/chat/${joinLinkPreview.code}`,
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subtle: true,
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}
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}
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if (
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bsky.isType(
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chat.bsky.group.defs.disabledJoinLinkPreviewView,
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joinLinkPreview,
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)
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) {
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return {
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text: l({
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message: '(disabled chat invite link)',
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comment: 'A reply summary in chat',
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}),
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subtle: true,
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}
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}
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if (
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bsky.isType(
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chat.bsky.group.defs.invalidJoinLinkPreviewView,
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joinLinkPreview,
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)
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) {
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return {
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text: l({
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message: '(invalid chat invite link)',
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comment: 'A reply summary in chat',
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}),
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subtle: true,
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}
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}
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return {
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text: l({
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message: '(chat invite link)',
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comment: 'A reply summary in chat',
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}),
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subtle: true,
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}
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}
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const summary = summarizeReplyEmbed(message.embed)
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switch (summary.type) {
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case 'external':
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return {text: toShortUrl(summary.uri), subtle: true}
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case 'post':
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return {
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text: l({
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message: '(quoted post)',
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comment: 'A reply summary in chat',
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}),
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subtle: true,
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}
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default:
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return {
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text: l({message: '(no text)', comment: 'A reply summary in chat'}),
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subtle: true,
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}
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}
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}
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}
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