296 lines
11 KiB
JavaScript
296 lines
11 KiB
JavaScript
// @ts-check
|
|
|
|
const assert = require("assert").strict
|
|
const markdown = require("discord-markdown")
|
|
const pb = require("prettier-bytes")
|
|
const DiscordTypes = require("discord-api-types/v10")
|
|
|
|
const passthrough = require("../../passthrough")
|
|
const { sync, db, discord } = passthrough
|
|
/** @type {import("../../matrix/file")} */
|
|
const file = sync.require("../../matrix/file")
|
|
const reg = require("../../matrix/read-registration")
|
|
|
|
const userRegex = reg.namespaces.users.map(u => new RegExp(u.regex))
|
|
|
|
function getDiscordParseCallbacks(message, useHTML) {
|
|
return {
|
|
/** @param {{id: string, type: "discordUser"}} node */
|
|
user: node => {
|
|
const mxid = db.prepare("SELECT mxid FROM sim WHERE discord_id = ?").pluck().get(node.id)
|
|
const username = message.mentions.find(ment => ment.id === node.id)?.username || node.id
|
|
if (mxid && useHTML) {
|
|
return `<a href="https://matrix.to/#/${mxid}">@${username}</a>`
|
|
} else {
|
|
return `@${username}:`
|
|
}
|
|
},
|
|
/** @param {{id: string, type: "discordChannel"}} node */
|
|
channel: node => {
|
|
const {room_id, name, nick} = db.prepare("SELECT room_id, name, nick FROM channel_room WHERE channel_id = ?").get(node.id)
|
|
if (room_id && useHTML) {
|
|
return `<a href="https://matrix.to/#/${room_id}">#${nick || name}</a>`
|
|
} else {
|
|
return `#${nick || name}`
|
|
}
|
|
},
|
|
/** @param {{animated: boolean, name: string, id: string, type: "discordEmoji"}} node */
|
|
emoji: node => {
|
|
if (useHTML) {
|
|
// TODO: upload the emoji and actually use the right mxc!!
|
|
return `<img src="mxc://cadence.moe/${node.id}" data-mx-emoticon alt=":${node.name}:" title=":${node.name}:" height="24">`
|
|
} else {
|
|
return `:${node.name}:`
|
|
}
|
|
},
|
|
role: node =>
|
|
"@&" + node.id,
|
|
everyone: node =>
|
|
"@room",
|
|
here: node =>
|
|
"@here"
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {import("discord-api-types/v10").APIMessage} message
|
|
* @param {import("discord-api-types/v10").APIGuild} guild
|
|
* @param {{includeReplyFallback?: boolean, includeEditFallbackStar?: boolean}} options default values:
|
|
* - includeReplyFallback: true
|
|
* - includeEditFallbackStar: false
|
|
* @param {{api: import("../../matrix/api")}} di simple-as-nails dependency injection for the matrix API
|
|
*/
|
|
async function messageToEvent(message, guild, options = {}, di) {
|
|
const events = []
|
|
|
|
/**
|
|
@type {{room?: boolean, user_ids?: string[]}}
|
|
We should consider the following scenarios for mentions:
|
|
1. A discord user rich-replies to a matrix user with a text post
|
|
+ The matrix user needs to be m.mentioned in the text event
|
|
+ The matrix user needs to have their name/mxid/link in the text event (notification fallback)
|
|
- So prepend their `@name:` to the start of the plaintext body
|
|
2. A discord user rich-replies to a matrix user with an image event only
|
|
+ The matrix user needs to be m.mentioned in the image event
|
|
+ TODO The matrix user needs to have their name/mxid in the image event's body field, alongside the filename (notification fallback)
|
|
- So append their name to the filename body, I guess!!!
|
|
3. A discord user `@`s a matrix user in the text body of their text box
|
|
+ The matrix user needs to be m.mentioned in the text event
|
|
+ No change needed to the text event content: it already has their name
|
|
- So make sure we don't do anything in this case.
|
|
*/
|
|
const mentions = {}
|
|
let repliedToEventId = null
|
|
let repliedToEventRoomId = null
|
|
let repliedToEventSenderMxid = null
|
|
let repliedToEventOriginallyFromMatrix = false
|
|
|
|
function addMention(mxid) {
|
|
if (!mentions.user_ids) mentions.user_ids = []
|
|
if (!mentions.user_ids.includes(mxid)) mentions.user_ids.push(mxid)
|
|
}
|
|
|
|
// Mentions scenarios 1 and 2, part A. i.e. translate relevant message.mentions to m.mentions
|
|
// (Still need to do scenarios 1 and 2 part B, and scenario 3.)
|
|
if (message.type === DiscordTypes.MessageType.Reply && message.message_reference?.message_id) {
|
|
const row = db.prepare("SELECT event_id, room_id, source FROM event_message INNER JOIN channel_room USING (channel_id) WHERE message_id = ? AND part = 0").get(message.message_reference.message_id)
|
|
if (row) {
|
|
repliedToEventId = row.event_id
|
|
repliedToEventRoomId = row.room_id
|
|
repliedToEventOriginallyFromMatrix = row.source === 0 // source 0 = matrix
|
|
}
|
|
}
|
|
if (repliedToEventOriginallyFromMatrix) {
|
|
// Need to figure out who sent that event...
|
|
const event = await di.api.getEvent(repliedToEventRoomId, repliedToEventId)
|
|
repliedToEventSenderMxid = event.sender
|
|
// Need to add the sender to m.mentions
|
|
addMention(repliedToEventSenderMxid)
|
|
}
|
|
|
|
// Text content appears first
|
|
if (message.content) {
|
|
let content = message.content
|
|
content = content.replace(/https:\/\/(?:ptb\.|canary\.|www\.)?discord(?:app)?\.com\/channels\/([0-9]+)\/([0-9]+)\/([0-9]+)/, (whole, guildID, channelID, messageID) => {
|
|
const row = db.prepare("SELECT room_id, event_id FROM event_message INNER JOIN channel_room USING (channel_id) WHERE channel_id = ? AND message_id = ? AND part = 0").get(channelID, messageID)
|
|
if (row) {
|
|
return `https://matrix.to/#/${row.room_id}/${row.event_id}`
|
|
} else {
|
|
return `${whole} [event not found]`
|
|
}
|
|
})
|
|
|
|
let html = markdown.toHTML(content, {
|
|
discordCallback: getDiscordParseCallbacks(message, true)
|
|
}, null, null)
|
|
|
|
// TODO: add a string return type to my discord-markdown library
|
|
let body = markdown.toHTML(content, {
|
|
discordCallback: getDiscordParseCallbacks(message, false),
|
|
discordOnly: true,
|
|
escapeHTML: false,
|
|
}, null, null)
|
|
|
|
// Mentions scenario 3: scan the message content for written @mentions of matrix users. Allows for up to one space between @ and mention.
|
|
const matches = [...content.matchAll(/@ ?([a-z0-9._]+)\b/gi)]
|
|
if (matches.length && matches.some(m => m[1].match(/[a-z]/i))) {
|
|
const writtenMentionsText = matches.map(m => m[1].toLowerCase())
|
|
const roomID = db.prepare("SELECT room_id FROM channel_room WHERE channel_id = ?").pluck().get(message.channel_id)
|
|
const {joined} = await di.api.getJoinedMembers(roomID)
|
|
for (const [mxid, member] of Object.entries(joined)) {
|
|
if (!userRegex.some(rx => mxid.match(rx))) {
|
|
const localpart = mxid.match(/@([^:]*)/)
|
|
assert(localpart)
|
|
if (writtenMentionsText.includes(localpart[1].toLowerCase()) || writtenMentionsText.includes(member.display_name.toLowerCase())) addMention(mxid)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Star * prefix for fallback edits
|
|
if (options.includeEditFallbackStar) {
|
|
body = "* " + body
|
|
html = "* " + html
|
|
}
|
|
|
|
// Fallback body/formatted_body for replies
|
|
// This branch is optional - do NOT change anything apart from the reply fallback, since it may not be run
|
|
if (repliedToEventId && options.includeReplyFallback !== false) {
|
|
let repliedToDisplayName
|
|
let repliedToUserHtml
|
|
if (repliedToEventOriginallyFromMatrix && repliedToEventSenderMxid) {
|
|
const match = repliedToEventSenderMxid.match(/^@([^:]*)/)
|
|
assert(match)
|
|
repliedToDisplayName = match[1] || "a Matrix user" // grab the localpart as the display name, whatever
|
|
repliedToUserHtml = `<a href="https://matrix.to/#/${repliedToEventSenderMxid}">${repliedToDisplayName}</a>`
|
|
} else {
|
|
repliedToDisplayName = message.referenced_message?.author.global_name || message.referenced_message?.author.username || "a Discord user"
|
|
repliedToUserHtml = repliedToDisplayName
|
|
}
|
|
let repliedToContent = message.referenced_message?.content
|
|
if (repliedToContent == "") repliedToContent = "[Media]"
|
|
else if (!repliedToContent) repliedToContent = "[Replied-to message content wasn't provided by Discord]"
|
|
const repliedToHtml = markdown.toHTML(repliedToContent, {
|
|
discordCallback: getDiscordParseCallbacks(message, true)
|
|
}, null, null)
|
|
const repliedToBody = markdown.toHTML(repliedToContent, {
|
|
discordCallback: getDiscordParseCallbacks(message, false),
|
|
discordOnly: true,
|
|
escapeHTML: false,
|
|
}, null, null)
|
|
html = `<mx-reply><blockquote><a href="https://matrix.to/#/${repliedToEventRoomId}/${repliedToEventId}">In reply to</a> ${repliedToUserHtml}`
|
|
+ `<br>${repliedToHtml}</blockquote></mx-reply>`
|
|
+ html
|
|
body = (`${repliedToDisplayName}: ` // scenario 1 part B for mentions
|
|
+ repliedToBody).split("\n").map(line => "> " + line).join("\n")
|
|
+ "\n\n" + body
|
|
}
|
|
|
|
const newTextMessageEvent = {
|
|
$type: "m.room.message",
|
|
"m.mentions": mentions,
|
|
msgtype: "m.text",
|
|
body: body
|
|
}
|
|
|
|
const isPlaintext = body === html
|
|
|
|
if (!isPlaintext) {
|
|
Object.assign(newTextMessageEvent, {
|
|
format: "org.matrix.custom.html",
|
|
formatted_body: html
|
|
})
|
|
}
|
|
|
|
events.push(newTextMessageEvent)
|
|
}
|
|
|
|
// Then attachments
|
|
const attachmentEvents = await Promise.all(message.attachments.map(async attachment => {
|
|
const emoji =
|
|
attachment.content_type?.startsWith("image/jp") ? "📸"
|
|
: attachment.content_type?.startsWith("image/") ? "🖼️"
|
|
: attachment.content_type?.startsWith("video/") ? "🎞️"
|
|
: attachment.content_type?.startsWith("text/") ? "📝"
|
|
: attachment.content_type?.startsWith("audio/") ? "🎶"
|
|
: "📄"
|
|
// for large files, always link them instead of uploading so I don't use up all the space in the content repo
|
|
if (attachment.size > reg.ooye.max_file_size) {
|
|
return {
|
|
$type: "m.room.message",
|
|
"m.mentions": mentions,
|
|
msgtype: "m.text",
|
|
body: `${emoji} Uploaded file: ${attachment.url} (${pb(attachment.size)})`,
|
|
format: "org.matrix.custom.html",
|
|
formatted_body: `${emoji} Uploaded file: <a href="${attachment.url}">${attachment.filename}</a> (${pb(attachment.size)})`
|
|
}
|
|
} else if (attachment.content_type?.startsWith("image/") && attachment.width && attachment.height) {
|
|
return {
|
|
$type: "m.room.message",
|
|
"m.mentions": mentions,
|
|
msgtype: "m.image",
|
|
url: await file.uploadDiscordFileToMxc(attachment.url),
|
|
external_url: attachment.url,
|
|
body: attachment.filename,
|
|
// TODO: filename: attachment.filename and then use body as the caption
|
|
info: {
|
|
mimetype: attachment.content_type,
|
|
w: attachment.width,
|
|
h: attachment.height,
|
|
size: attachment.size
|
|
}
|
|
}
|
|
} else {
|
|
return {
|
|
$type: "m.room.message",
|
|
"m.mentions": mentions,
|
|
msgtype: "m.text",
|
|
body: `Unsupported attachment:\n${JSON.stringify(attachment, null, 2)}\n${attachment.url}`
|
|
}
|
|
}
|
|
}))
|
|
events.push(...attachmentEvents)
|
|
|
|
// Then stickers
|
|
if (message.sticker_items) {
|
|
const stickerEvents = await Promise.all(message.sticker_items.map(async stickerItem => {
|
|
const format = file.stickerFormat.get(stickerItem.format_type)
|
|
if (format?.mime) {
|
|
let body = stickerItem.name
|
|
const sticker = guild.stickers.find(sticker => sticker.id === stickerItem.id)
|
|
if (sticker && sticker.description) body += ` - ${sticker.description}`
|
|
return {
|
|
$type: "m.sticker",
|
|
"m.mentions": mentions,
|
|
body,
|
|
info: {
|
|
mimetype: format.mime
|
|
},
|
|
url: await file.uploadDiscordFileToMxc(file.sticker(stickerItem))
|
|
}
|
|
} else {
|
|
return {
|
|
$type: "m.room.message",
|
|
"m.mentions": mentions,
|
|
msgtype: "m.text",
|
|
body: "Unsupported sticker format. Name: " + stickerItem.name
|
|
}
|
|
}
|
|
}))
|
|
events.push(...stickerEvents)
|
|
}
|
|
|
|
// Rich replies
|
|
if (repliedToEventId) {
|
|
Object.assign(events[0], {
|
|
"m.relates_to": {
|
|
"m.in_reply_to": {
|
|
event_id: repliedToEventId
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
return events
|
|
}
|
|
|
|
module.exports.messageToEvent = messageToEvent
|