628 lines
25 KiB
JavaScript
628 lines
25 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 {tag} = require("html-template-tag")
|
||
|
||
const passthrough = require("../../passthrough")
|
||
const {sync, db, discord, select, from} = passthrough
|
||
/** @type {import("../../matrix/file")} */
|
||
const file = sync.require("../../matrix/file")
|
||
/** @type {import("./emoji-to-key")} */
|
||
const emojiToKey = sync.require("./emoji-to-key")
|
||
/** @type {import("../actions/lottie")} */
|
||
const lottie = sync.require("../actions/lottie")
|
||
/** @type {import("../../m2d/converters/utils")} */
|
||
const mxUtils = sync.require("../../m2d/converters/utils")
|
||
/** @type {import("../../discord/utils")} */
|
||
const dUtils = sync.require("../../discord/utils")
|
||
const reg = require("../../matrix/read-registration")
|
||
|
||
const userRegex = reg.namespaces.users.map(u => new RegExp(u.regex))
|
||
|
||
/**
|
||
* @param {DiscordTypes.APIMessage} message
|
||
* @param {DiscordTypes.APIGuild} guild
|
||
* @param {boolean} useHTML
|
||
*/
|
||
function getDiscordParseCallbacks(message, guild, useHTML) {
|
||
return {
|
||
/** @param {{id: string, type: "discordUser"}} node */
|
||
user: node => {
|
||
const mxid = select("sim", "mxid", {user_id: node.id}).pluck().get()
|
||
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 `@${username}:`
|
||
}
|
||
},
|
||
/** @param {{id: string, type: "discordChannel", row: {room_id: string, name: string, nick: string?}?, via: string}} node */
|
||
channel: node => {
|
||
if (!node.row) { // fallback for when this channel is not bridged
|
||
const channel = discord.channels.get(node.id)
|
||
if (channel) {
|
||
return `#${channel.name} [channel not bridged]`
|
||
} else {
|
||
return `#unknown-channel [channel from an unbridged server]`
|
||
}
|
||
} else if (useHTML) {
|
||
return `<a href="https://matrix.to/#/${node.row.room_id}?${node.via}">#${node.row.nick || node.row.name}</a>`
|
||
} else {
|
||
return `#${node.row.nick || node.row.name}`
|
||
}
|
||
},
|
||
/** @param {{animated: boolean, name: string, id: string, type: "discordEmoji"}} node */
|
||
emoji: node => {
|
||
if (useHTML) {
|
||
const mxc = select("emoji", "mxc_url", {emoji_id: node.id}).pluck().get()
|
||
assert(mxc) // All emojis should have been added ahead of time in the messageToEvent function.
|
||
return `<img data-mx-emoticon height="32" src="${mxc}" title=":${node.name}:" alt=":${node.name}:">`
|
||
} else {
|
||
return `:${node.name}:`
|
||
}
|
||
},
|
||
role: node => {
|
||
const role = guild.roles.find(r => r.id === node.id)
|
||
if (!role) {
|
||
// This fallback should only trigger if somebody manually writes a silly message, or if the cache breaks (hasn't happened yet).
|
||
// If the cache breaks, fix discord-packets.js to store role info properly.
|
||
return "@&" + node.id
|
||
} else if (useHTML && role.color) {
|
||
return `<font color="#${role.color.toString(16)}">@${role.name}</font>`
|
||
} else if (useHTML) {
|
||
return `<span data-mx-color="#ffffff" data-mx-bg-color="#414eef">@${role.name}</span>`
|
||
} else {
|
||
return `@${role.name}:`
|
||
}
|
||
},
|
||
everyone: () => {
|
||
if (message.mention_everyone) return "@room"
|
||
return "@everyone"
|
||
},
|
||
here: () => {
|
||
if (message.mention_everyone) return "@room"
|
||
return "@here"
|
||
}
|
||
}
|
||
}
|
||
|
||
const embedTitleParser = markdown.markdownEngine.parserFor({
|
||
...markdown.rules,
|
||
autolink: undefined,
|
||
link: undefined
|
||
})
|
||
|
||
/**
|
||
* @param {{room?: boolean, user_ids?: string[]}} mentions
|
||
* @param {DiscordTypes.APIAttachment} attachment
|
||
*/
|
||
async function attachmentToEvent(mentions, 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/") ? "🎶"
|
||
: "📄"
|
||
// no native media spoilers in Element, so we'll post a link instead, forcing it to not preview using a blockquote
|
||
if (attachment.filename.startsWith("SPOILER_")) {
|
||
return {
|
||
$type: "m.room.message",
|
||
"m.mentions": mentions,
|
||
msgtype: "m.text",
|
||
body: `${emoji} Uploaded SPOILER file: ${attachment.url} (${pb(attachment.size)})`,
|
||
format: "org.matrix.custom.html",
|
||
formatted_body: `<blockquote>${emoji} Uploaded SPOILER file: <a href="${attachment.url}">${attachment.url}</a> (${pb(attachment.size)})</blockquote>`
|
||
}
|
||
}
|
||
// for large files, always link them instead of uploading so I don't use up all the space in the content repo
|
||
else 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.description || attachment.filename,
|
||
filename: attachment.filename,
|
||
info: {
|
||
mimetype: attachment.content_type,
|
||
w: attachment.width,
|
||
h: attachment.height,
|
||
size: attachment.size
|
||
}
|
||
}
|
||
} else if (attachment.content_type?.startsWith("video/") && attachment.width && attachment.height) {
|
||
return {
|
||
$type: "m.room.message",
|
||
"m.mentions": mentions,
|
||
msgtype: "m.video",
|
||
url: await file.uploadDiscordFileToMxc(attachment.url),
|
||
external_url: attachment.url,
|
||
body: attachment.description || attachment.filename,
|
||
filename: attachment.filename,
|
||
info: {
|
||
mimetype: attachment.content_type,
|
||
w: attachment.width,
|
||
h: attachment.height,
|
||
size: attachment.size
|
||
}
|
||
}
|
||
} else if (attachment.content_type?.startsWith("audio/")) {
|
||
return {
|
||
$type: "m.room.message",
|
||
"m.mentions": mentions,
|
||
msgtype: "m.audio",
|
||
url: await file.uploadDiscordFileToMxc(attachment.url),
|
||
external_url: attachment.url,
|
||
body: attachment.description || attachment.filename,
|
||
filename: attachment.filename,
|
||
info: {
|
||
mimetype: attachment.content_type,
|
||
size: attachment.size,
|
||
duration: attachment.duration_secs ? attachment.duration_secs * 1000 : undefined
|
||
}
|
||
}
|
||
} else {
|
||
return {
|
||
$type: "m.room.message",
|
||
"m.mentions": mentions,
|
||
msgtype: "m.file",
|
||
url: await file.uploadDiscordFileToMxc(attachment.url),
|
||
external_url: attachment.url,
|
||
body: attachment.description || attachment.filename,
|
||
filename: attachment.filename,
|
||
info: {
|
||
mimetype: attachment.content_type,
|
||
size: attachment.size
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @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 = []
|
||
|
||
/* c8 ignore next 7 */
|
||
if (message.type === DiscordTypes.MessageType.ThreadCreated) {
|
||
// This is the kind of message that appears when somebody makes a thread which isn't close enough to the message it's based off.
|
||
// It lacks the lines and the pill, so it looks kind of like a member join message, and it says:
|
||
// [#] NICKNAME started a thread: __THREAD NAME__. __See all threads__
|
||
// We're already bridging the THREAD_CREATED gateway event to make a comparable message, so drop this one.
|
||
return []
|
||
}
|
||
|
||
if (message.type === DiscordTypes.MessageType.ThreadStarterMessage) {
|
||
// This is the message that appears at the top of a thread when the thread was based off an existing message.
|
||
// It's just a message reference, no content.
|
||
const ref = message.message_reference
|
||
assert(ref)
|
||
assert(ref.message_id)
|
||
const eventID = select("event_message", "event_id", {message_id: ref.message_id}).pluck().get()
|
||
const roomID = select("channel_room", "room_id", {channel_id: ref.channel_id}).pluck().get()
|
||
if (!eventID || !roomID) return []
|
||
const event = await di.api.getEvent(roomID, eventID)
|
||
return [{
|
||
...event.content,
|
||
$type: event.type,
|
||
$sender: null
|
||
}]
|
||
}
|
||
|
||
/**
|
||
@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 repliedToEventRow = null
|
||
let repliedToEventSenderMxid = null
|
||
|
||
if (message.mention_everyone) mentions.room = true
|
||
|
||
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 = from("event_message").join("message_channel", "message_id").join("channel_room", "channel_id").select("event_id", "room_id", "source").and("WHERE message_id = ? AND part = 0").get(message.message_reference.message_id)
|
||
if (row) {
|
||
repliedToEventRow = row
|
||
}
|
||
} else if (dUtils.isWebhookMessage(message) && message.embeds[0]?.author?.name?.endsWith("↩️")) {
|
||
// It could be a PluralKit emulated reply, let's see if it has a message link
|
||
const isEmulatedReplyToText = message.embeds[0].description?.startsWith("**[Reply to:]")
|
||
const isEmulatedReplyToAttachment = message.embeds[0].description?.startsWith("*[(click to see attachment")
|
||
if (isEmulatedReplyToText || isEmulatedReplyToAttachment) {
|
||
assert(message.embeds[0].description)
|
||
const match = message.embeds[0].description.match(/\/channels\/[0-9]*\/[0-9]*\/([0-9]{2,})/)
|
||
if (match) {
|
||
const row = from("event_message").join("message_channel", "message_id").join("channel_room", "channel_id").select("event_id", "room_id", "source").and("WHERE message_id = ? AND part = 0").get(match[1])
|
||
if (row) {
|
||
/*
|
||
we generate a partial referenced_message based on what PK provided. we don't need everything, since this will only be used for further message-to-event converting.
|
||
the following properties are necessary:
|
||
- content: used for generating the reply fallback
|
||
- author: used for the top of the reply fallback (only used for discord authors. for matrix authors, repliedToEventSenderMxid is set.)
|
||
*/
|
||
const emulatedMessageContent =
|
||
( isEmulatedReplyToAttachment ? "[Media]"
|
||
: message.embeds[0].description.replace(/^.*?\)\*\*\s*/, ""))
|
||
message.referenced_message = {
|
||
content: emulatedMessageContent,
|
||
// @ts-ignore
|
||
author: {
|
||
username: message.embeds[0].author.name.replace(/\s*↩️\s*$/, "")
|
||
}
|
||
}
|
||
message.embeds.shift()
|
||
repliedToEventRow = row
|
||
}
|
||
}
|
||
}
|
||
}
|
||
if (repliedToEventRow && repliedToEventRow.source === 0) { // reply was originally from Matrix
|
||
// Need to figure out who sent that event...
|
||
const event = await di.api.getEvent(repliedToEventRow.room_id, repliedToEventRow.event_id)
|
||
repliedToEventSenderMxid = event.sender
|
||
// Need to add the sender to m.mentions
|
||
addMention(repliedToEventSenderMxid)
|
||
}
|
||
|
||
/** @type {Map<string, Promise<string>>} */
|
||
const viaMemo = new Map()
|
||
/**
|
||
* @param {string} roomID
|
||
* @returns {Promise<string>} string encoded URLSearchParams
|
||
*/
|
||
function getViaServersMemo(roomID) {
|
||
// @ts-ignore
|
||
if (viaMemo.has(roomID)) return viaMemo.get(roomID)
|
||
const promise = mxUtils.getViaServersQuery(roomID, di.api).then(p => p.toString())
|
||
viaMemo.set(roomID, promise)
|
||
return promise
|
||
}
|
||
|
||
/**
|
||
* Translate Discord message links to Matrix event links.
|
||
* If OOYE has handled this message in the past, this is an instant database lookup.
|
||
* Otherwise, if OOYE knows the channel, this is a multi-second request to /timestamp_to_event to approximate.
|
||
* @param {string} content Partial or complete Discord message content
|
||
*/
|
||
async function transformContentMessageLinks(content) {
|
||
let offset = 0
|
||
for (const match of [...content.matchAll(/https:\/\/(?:ptb\.|canary\.|www\.)?discord(?:app)?\.com\/channels\/[0-9]+\/([0-9]+)\/([0-9]+)/g)]) {
|
||
assert(typeof match.index === "number")
|
||
const [_, channelID, messageID] = match
|
||
let result
|
||
|
||
const roomID = select("channel_room", "room_id", {channel_id: channelID}).pluck().get()
|
||
if (roomID) {
|
||
const eventID = select("event_message", "event_id", {message_id: messageID}).pluck().get()
|
||
const via = await getViaServersMemo(roomID)
|
||
if (eventID && roomID) {
|
||
result = `https://matrix.to/#/${roomID}/${eventID}?${via}`
|
||
} else {
|
||
const ts = dUtils.snowflakeToTimestampExact(messageID)
|
||
const {event_id} = await di.api.getEventForTimestamp(roomID, ts)
|
||
result = `https://matrix.to/#/${roomID}/${event_id}?${via}`
|
||
}
|
||
} else {
|
||
result = `${match[0]} [event is from another server]`
|
||
}
|
||
|
||
content = content.slice(0, match.index + offset) + result + content.slice(match.index + match[0].length + offset)
|
||
offset += result.length - match[0].length
|
||
}
|
||
return content
|
||
}
|
||
|
||
/**
|
||
* Translate links and emojis and mentions and stuff. Give back the text and HTML so they can be combined into bigger events.
|
||
* @param {string} content Partial or complete Discord message content
|
||
* @param {any} customOptions
|
||
* @param {any} customParser
|
||
* @param {any} customHtmlOutput
|
||
*/
|
||
async function transformContent(content, customOptions = {}, customParser = null, customHtmlOutput = null) {
|
||
content = await transformContentMessageLinks(content)
|
||
|
||
// Handling emojis that we don't know about. The emoji has to be present in the DB for it to be picked up in the emoji markdown converter.
|
||
// So we scan the message ahead of time for all its emojis and ensure they are in the DB.
|
||
const emojiMatches = [...content.matchAll(/<(a?):([^:>]{2,64}):([0-9]+)>/g)]
|
||
await Promise.all(emojiMatches.map(match => {
|
||
const id = match[3]
|
||
const name = match[2]
|
||
const animated = !!match[1]
|
||
return emojiToKey.emojiToKey({id, name, animated}) // Register the custom emoji if needed
|
||
}))
|
||
|
||
async function transformParsedVia(parsed) {
|
||
for (const node of parsed) {
|
||
if (node.type === "discordChannel") {
|
||
node.row = select("channel_room", ["room_id", "name", "nick"], {channel_id: node.id}).get()
|
||
if (node.row?.room_id) {
|
||
node.via = await getViaServersMemo(node.row.room_id)
|
||
}
|
||
}
|
||
if (Array.isArray(node.content)) {
|
||
await transformParsedVia(node.content)
|
||
}
|
||
}
|
||
return parsed
|
||
}
|
||
|
||
let html = await markdown.toHtmlWithPostParser(content, transformParsedVia, {
|
||
discordCallback: getDiscordParseCallbacks(message, guild, true),
|
||
...customOptions
|
||
}, customParser, customHtmlOutput)
|
||
|
||
let body = await markdown.toHtmlWithPostParser(content, transformParsedVia, {
|
||
discordCallback: getDiscordParseCallbacks(message, guild, false),
|
||
discordOnly: true,
|
||
escapeHTML: false,
|
||
...customOptions
|
||
}, null, null)
|
||
|
||
return {body, html}
|
||
}
|
||
|
||
// FIXME: What was the scanMentions parameter supposed to activate? It's unused.
|
||
async function addTextEvent(body, html, msgtype, {scanMentions}) {
|
||
// Star * prefix for fallback edits
|
||
if (options.includeEditFallbackStar) {
|
||
body = "* " + body
|
||
html = "* " + html
|
||
}
|
||
|
||
const flags = message.flags || 0
|
||
if (flags & 2) {
|
||
body = `[🔀 ${message.author.username}]\n` + body
|
||
html = `🔀 <strong>${message.author.username}</strong><br>` + 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 (repliedToEventRow && options.includeReplyFallback !== false) {
|
||
let repliedToDisplayName
|
||
let repliedToUserHtml
|
||
if (repliedToEventRow?.source === 0 && repliedToEventSenderMxid) {
|
||
const match = repliedToEventSenderMxid.match(/^@([^:]*)/)
|
||
assert(match)
|
||
repliedToDisplayName = message.referenced_message?.author.username || 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?.startsWith("> <:L1:")) {
|
||
// If the Discord user is replying to a Matrix user's reply, the fallback is going to contain the emojis and stuff from the bridged rep of the Matrix user's reply quote.
|
||
// Need to remove that previous reply rep from this fallback body. The fallbody body should only contain the Matrix user's actual message.
|
||
repliedToContent = repliedToContent.split("\n").slice(2).join("\n")
|
||
}
|
||
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, guild, true)
|
||
}, null, null)
|
||
const repliedToBody = markdown.toHTML(repliedToContent, {
|
||
discordCallback: getDiscordParseCallbacks(message, guild, false),
|
||
discordOnly: true,
|
||
escapeHTML: false,
|
||
}, null, null)
|
||
html = `<mx-reply><blockquote><a href="https://matrix.to/#/${repliedToEventRow.room_id}/${repliedToEventRow.event_id}">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,
|
||
body: body
|
||
}
|
||
|
||
const isPlaintext = body === html
|
||
|
||
if (!isPlaintext) {
|
||
Object.assign(newTextMessageEvent, {
|
||
format: "org.matrix.custom.html",
|
||
formatted_body: html
|
||
})
|
||
}
|
||
|
||
events.push(newTextMessageEvent)
|
||
}
|
||
|
||
|
||
let msgtype = "m.text"
|
||
// Handle message type 4, channel name changed
|
||
if (message.type === DiscordTypes.MessageType.ChannelNameChange) {
|
||
msgtype = "m.emote"
|
||
message.content = "changed the channel name to **" + message.content + "**"
|
||
}
|
||
|
||
// Mentions scenario 3: scan the message content for written @mentions of matrix users. Allows for up to one space between @ and mention.
|
||
const matches = [...message.content.matchAll(/@ ?([a-z0-9._]+)\b/gi)]
|
||
if (matches.length && matches.some(m => m[1].match(/[a-z]/i) && m[1] !== "everyone" && m[1] !== "here")) {
|
||
const writtenMentionsText = matches.map(m => m[1].toLowerCase())
|
||
const roomID = select("channel_room", "room_id", {channel_id: message.channel_id}).pluck().get()
|
||
assert(roomID)
|
||
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)
|
||
const displayName = member.display_name || localpart[1]
|
||
if (writtenMentionsText.includes(localpart[1].toLowerCase()) || writtenMentionsText.includes(displayName.toLowerCase())) addMention(mxid)
|
||
}
|
||
}
|
||
}
|
||
|
||
// Text content appears first
|
||
if (message.content) {
|
||
const {body, html} = await transformContent(message.content)
|
||
await addTextEvent(body, html, msgtype, {scanMentions: true})
|
||
}
|
||
|
||
// Then attachments
|
||
const attachmentEvents = await Promise.all(message.attachments.map(attachmentToEvent.bind(null, mentions)))
|
||
events.push(...attachmentEvents)
|
||
|
||
// Then embeds
|
||
for (const embed of message.embeds || []) {
|
||
if (embed.type === "image") {
|
||
continue // Matrix's own URL previews are fine for images.
|
||
}
|
||
|
||
// Start building up a replica ("rep") of the embed in Discord-markdown format, which we will convert into both plaintext and formatted body at once
|
||
const rep = new mxUtils.MatrixStringBuilder()
|
||
|
||
// Provider
|
||
if (embed.provider?.name) {
|
||
if (embed.provider.url) {
|
||
rep.addParagraph(`via ${embed.provider.name} ${embed.provider.url}`, tag`<sub><a href="${embed.provider.url}">${embed.provider.name}</a></sub>`)
|
||
} else {
|
||
rep.addParagraph(`via ${embed.provider.name}`, tag`<sub>${embed.provider.name}</sub>`)
|
||
}
|
||
}
|
||
|
||
// Author and URL into a paragraph
|
||
let authorNameText = embed.author?.name || ""
|
||
if (authorNameText && embed.author?.icon_url) authorNameText = `⏺️ ${authorNameText}` // using the emoji instead of an image
|
||
if (authorNameText) {
|
||
if (embed.author?.url) {
|
||
const authorURL = await transformContentMessageLinks(embed.author.url)
|
||
rep.addParagraph(`## ${authorNameText} ${authorURL}`, tag`<strong><a href="${authorURL}">${authorNameText}</a></strong>`)
|
||
} else {
|
||
rep.addParagraph(`## ${authorNameText}`, tag`<strong>${authorNameText}</strong>`)
|
||
}
|
||
}
|
||
|
||
// Title and URL into a paragraph
|
||
if (embed.title) {
|
||
const {body, html} = await transformContent(embed.title, {}, embedTitleParser, markdown.htmlOutput)
|
||
if (embed.url) {
|
||
rep.addParagraph(`## ${body} ${embed.url}`, tag`<strong><a href="${embed.url}">$${html}</a></strong>`)
|
||
} else {
|
||
rep.addParagraph(`## ${body}`, `<strong>${html}</strong>`)
|
||
}
|
||
}
|
||
|
||
let embedTypeShouldShowDescription = embed.type !== "video" // Discord doesn't display descriptions for videos
|
||
if (embed.provider?.name === "YouTube") embedTypeShouldShowDescription = true // But I personally like showing the descriptions for YouTube videos specifically
|
||
if (embed.description && embedTypeShouldShowDescription) {
|
||
const {body, html} = await transformContent(embed.description)
|
||
rep.addParagraph(body, html)
|
||
}
|
||
|
||
for (const field of embed.fields || []) {
|
||
const name = field.name.match(/^[\s]*$/) ? {body: "", html: ""} : await transformContent(field.name, {}, embedTitleParser, markdown.htmlOutput)
|
||
const value = await transformContent(field.value)
|
||
const fieldRep = new mxUtils.MatrixStringBuilder()
|
||
.addLine(`### ${name.body}`, `<strong>${name.html}</strong>`, name.body)
|
||
.addLine(value.body, value.html, !!value.body)
|
||
rep.addParagraph(fieldRep.get().body, fieldRep.get().formatted_body)
|
||
}
|
||
|
||
let chosenImage = embed.image?.url
|
||
// the thumbnail seems to be used for "article" type but displayed big at the bottom by discord
|
||
if (embed.type === "article" && embed.thumbnail?.url && !chosenImage) chosenImage = embed.thumbnail.url
|
||
if (chosenImage) rep.addParagraph(`📸 ${chosenImage}`)
|
||
|
||
if (embed.video?.url) rep.addParagraph(`🎞️ ${embed.video.url}`)
|
||
|
||
if (embed.footer?.text) rep.addLine(`— ${embed.footer.text}`, tag`— ${embed.footer.text}`)
|
||
let {body, formatted_body: html} = rep.get()
|
||
body = body.split("\n").map(l => "| " + l).join("\n")
|
||
html = `<blockquote>${html}</blockquote>`
|
||
|
||
// Send as m.notice to apply the usual automated/subtle appearance, showing this wasn't actually typed by the person
|
||
await addTextEvent(body, html, "m.notice", {scanMentions: false})
|
||
}
|
||
|
||
// 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)
|
||
assert(format?.mime)
|
||
if (format?.mime === "lottie") {
|
||
const {mxc_url, info} = await lottie.convert(stickerItem)
|
||
return {
|
||
$type: "m.sticker",
|
||
"m.mentions": mentions,
|
||
body: stickerItem.name,
|
||
info,
|
||
url: mxc_url
|
||
}
|
||
} else {
|
||
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))
|
||
}
|
||
}
|
||
}))
|
||
events.push(...stickerEvents)
|
||
}
|
||
|
||
// Rich replies
|
||
if (repliedToEventRow) {
|
||
Object.assign(events[0], {
|
||
"m.relates_to": {
|
||
"m.in_reply_to": {
|
||
event_id: repliedToEventRow.event_id
|
||
}
|
||
}
|
||
})
|
||
}
|
||
|
||
return events
|
||
}
|
||
|
||
module.exports.messageToEvent = messageToEvent
|