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m->d rich replies

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Cadence Ember 2023-08-26 20:30:22 +12:00
parent 39fb4465f6
commit 0ea2b4efc9
4 changed files with 231 additions and 33 deletions
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37
m2d/converters/event-to-message.js
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@ -26,6 +26,8 @@ const turndownService = new TurndownService({
codeBlockStyle: "fenced"
})
turndownService.remove("mx-reply")
turndownService.addRule("strikethrough", {
filter: ["del", "s", "strike"],
replacement: function (content) {
@ -69,13 +71,16 @@ turndownService.addRule("fencedCodeBlock", {
/**
* @param {Ty.Event.Outer<Ty.Event.M_Room_Message>} event
* @param {import("discord-api-types/v10").APIGuild} guild
* @param {{api: import("../../matrix/api")}} di simple-as-nails dependency injection for the matrix API
*/
function eventToMessage(event) {
async function eventToMessage(event, guild, di) {
/** @type {(DiscordTypes.RESTPostAPIWebhookWithTokenJSONBody & {files?: {name: string, file: Buffer}[]})[]} */
let messages = []
let displayName = event.sender
let avatarURL = undefined
let replyLine = ""
const match = event.sender.match(/^@(.*?):/)
if (match) {
displayName = match[1]
@ -95,7 +100,33 @@ function eventToMessage(event) {
// input = input.replace(/ /g, "&nbsp;")
// There is also a corresponding test to uncomment, named "event2message: whitespace is retained"
// Element adds a bunch of <br> before </blockquote> but doesn't render them. I can't figure out how this works, so let's just delete those.
// Handling replies. We'll look up the data of the replied-to event from the Matrix homeserver.
await (async () => {
const repliedToEventId = event.content["m.relates_to"]?.["m.in_reply_to"].event_id
if (!repliedToEventId) return
const repliedToEvent = await di.api.getEvent(event.room_id, repliedToEventId)
if (!repliedToEvent) return
const row = db.prepare("SELECT channel_id, message_id FROM event_message WHERE event_id = ? ORDER BY part").get(repliedToEventId)
if (row) {
replyLine = `<:L1:1144820033948762203><:L2:1144820084079087647>https://discord.com/channels/${guild.id}/${row.channel_id}/${row.message_id} `
} else {
replyLine = `<:L1:1144820033948762203><:L2:1144820084079087647>`
}
const sender = repliedToEvent.sender
const senderName = sender.match(/@([^:]*)/)?.[1] || sender
const authorID = db.prepare("SELECT discord_id FROM sim WHERE mxid = ?").pluck().get(repliedToEvent.sender)
if (authorID) {
replyLine += `<@${authorID}>: `
} else {
replyLine += `Ⓜ️**${senderName}**: `
}
const repliedToContent = repliedToEvent.content.formatted_body || repliedToEvent.content.body
const contentPreviewChunks = chunk(repliedToContent.replace(/.*<\/mx-reply>/, "").replace(/(?:\n|<br>)+/g, " ").replace(/<[^>]+>/g, ""), 24)
const contentPreview = contentPreviewChunks.length > 1 ? contentPreviewChunks[0] + "..." : contentPreviewChunks[0]
replyLine += contentPreview + "\n"
})()
// Element adds a bunch of <br> before </blockquote> but doesn't render them. I can't figure out how this even works in the browser, so let's just delete those.
input = input.replace(/(?:\n|<br ?\/?>\s*)*<\/blockquote>/g, "</blockquote>")
// The matrix spec hasn't decided whether \n counts as a newline or not, but I'm going to count it, because if it's in the data it's there for a reason.
@ -127,6 +158,8 @@ function eventToMessage(event) {
content = content.replace(/([*_~`#])/g, `\\$1`)
}
content = replyLine + content
// Split into 2000 character chunks
const chunks = chunk(content, 2000)
messages = messages.concat(chunks.map(content => ({