out-of-your-element/d2m/converters/thread-to-announcement.js

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// @ts-check
const assert = require("assert").strict
const passthrough = require("../../passthrough")
const {discord, sync, db, select} = passthrough
/** @type {import("../../matrix/read-registration")} */
const reg = sync.require("../../matrix/read-registration.js")
const userRegex = reg.namespaces.users.map(u => new RegExp(u.regex))
/**
* @param {string} parentRoomID
* @param {string} threadRoomID
* @param {string?} creatorMxid
* @param {import("discord-api-types/v10").APIThreadChannel} thread
* @param {{api: import("../../matrix/api")}} di simple-as-nails dependency injection for the matrix API
*/
async function threadToAnnouncement(parentRoomID, threadRoomID, creatorMxid, thread, di) {
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const branchedFromEventID = select("event_message", "event_id", {message_id: thread.id}).pluck().get()
/** @type {{"m.mentions"?: any, "m.in_reply_to"?: any}} */
const context = {}
if (branchedFromEventID) {
// Need to figure out who sent that event...
const event = await di.api.getEvent(parentRoomID, branchedFromEventID)
context["m.relates_to"] = {"m.in_reply_to": {event_id: event.event_id}}
if (event.sender && !userRegex.some(rx => event.sender.match(rx))) context["m.mentions"] = {user_ids: [event.sender]}
}
const msgtype = creatorMxid ? "m.emote" : "m.text"
const template = creatorMxid ? "started a thread:" : "Thread started:"
let body = `${template} ${thread.name} https://matrix.to/#/${threadRoomID}`
let html = `${template} <a href="https://matrix.to/#/${threadRoomID}">${thread.name}</a>`
return {
msgtype,
body,
format: "org.matrix.custom.html",
formatted_body: html,
"m.mentions": {},
...context
}
}
module.exports.threadToAnnouncement = threadToAnnouncement