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Resolve Matrix room aliases to Discord channels

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Cadence Ember 2025-01-08 13:56:59 +13:00
commit ad1aa2c0f6
4 changed files with 155 additions and 2 deletions
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14
src/m2d/converters/event-to-message.js
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@ -330,9 +330,9 @@ async function uploadEndOfMessageSpriteSheet(content, attachments, pendingFiles,
*/
async function handleRoomOrMessageLinks(input, di) {
let offset = 0
for (const match of [...input.matchAll(/("?https:\/\/matrix.to\/#\/(![^"/, ?)]+)(?:\/(\$[^"/ ?)]+))?(?:\?[^",:!? )]*?)?)(">|[,<\n )]|$)/g)]) {
for (const match of [...input.matchAll(/("?https:\/\/matrix.to\/#\/((?:#|%23|!)[^"/, ?)]+)(?:\/(\$[^"/ ?)]+))?(?:\?[^",:!? )]*?)?)(">|[,<\n )]|$)/g)]) {
assert(typeof match.index === "number")
const [_, attributeValue, roomID, eventID, endMarker] = match
let [_, attributeValue, roomID, eventID, endMarker] = match
let result
const resultType = endMarker === '">' ? "html" : "plain"
@ -350,6 +350,16 @@ async function handleRoomOrMessageLinks(input, di) {
// Don't process links that are part of the reply fallback, they'll be removed entirely by turndown
if (input.slice(match.index + match[0].length + offset).startsWith("In reply to")) continue
// Resolve room alias to room ID if needed
roomID = decodeURIComponent(roomID)
if (roomID[0] === "#") {
try {
roomID = await di.api.getAlias(roomID)
} catch (e) {
continue // Room alias is unresolvable, so it can't be converted
}
}
const channelID = select("channel_room", "channel_id", {room_id: roomID}).pluck().get()
if (!channelID) continue
if (!eventID) {