88 lines
4.0 KiB
JavaScript
88 lines
4.0 KiB
JavaScript
// @ts-check
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const assert = require("assert").strict
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const DiscordTypes = require("discord-api-types/v10")
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const passthrough = require("../../passthrough")
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const { discord, sync, db } = passthrough
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/** @type {import("../converters/message-to-event")} */
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const messageToEvent = sync.require("../converters/message-to-event")
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/** @type {import("../../matrix/api")} */
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const api = sync.require("../../matrix/api")
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/** @type {import("./register-user")} */
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const registerUser = sync.require("./register-user")
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/** @type {import("./register-pk-user")} */
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const registerPkUser = sync.require("./register-pk-user")
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/** @type {import("../actions/create-room")} */
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const createRoom = sync.require("../actions/create-room")
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/** @type {import("../../discord/utils")} */
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const dUtils = sync.require("../../discord/utils")
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/**
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* @param {DiscordTypes.GatewayMessageCreateDispatchData} message
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* @param {DiscordTypes.APIGuildChannel} channel
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* @param {DiscordTypes.APIGuild} guild
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* @param {{speedbump_id: string, speedbump_webhook_id: string} | null} row data about the webhook which is proxying messages in this channel
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*/
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async function sendMessage(message, channel, guild, row) {
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const roomID = await createRoom.ensureRoom(message.channel_id)
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let senderMxid = null
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if (!dUtils.isWebhookMessage(message)) {
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if (message.author.id === discord.application.id) {
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// no need to sync the bot's own user
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} else if (message.member) { // available on a gateway message create event
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senderMxid = await registerUser.syncUser(message.author, message.member, channel, guild, roomID)
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} else { // well, good enough...
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senderMxid = await registerUser.ensureSimJoined(message.author, roomID)
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}
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} else if (row && row.speedbump_webhook_id === message.webhook_id) {
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// Handle the PluralKit public instance
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if (row.speedbump_id === "466378653216014359") {
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const root = await registerPkUser.fetchMessage(message.id)
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// Member is null if member was deleted. We just got this message, so member surely exists.
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if (!root.member) {
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const e = new Error("PK API did not return a member")
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message["__pk_response__"] = root
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console.error(root)
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throw e
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}
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senderMxid = await registerPkUser.syncUser(message.author, root, roomID)
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}
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}
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const events = await messageToEvent.messageToEvent(message, guild, {}, {api})
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const eventIDs = []
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if (events.length) {
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db.prepare("REPLACE INTO message_channel (message_id, channel_id) VALUES (?, ?)").run(message.id, message.channel_id)
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if (senderMxid) api.sendTyping(roomID, false, senderMxid)
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}
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for (const event of events) {
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const part = event === events[0] ? 0 : 1
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const reactionPart = event === events[events.length - 1] ? 0 : 1
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const eventType = event.$type
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if ("$sender" in event) senderMxid = event.$sender
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/** @type {Pick<typeof event, Exclude<keyof event, "$type" | "$sender">> & { $type?: string, $sender?: string }} */
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const eventWithoutType = {...event}
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delete eventWithoutType.$type
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delete eventWithoutType.$sender
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const useTimestamp = message["backfill"] ? new Date(message.timestamp).getTime() : undefined
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const eventID = await api.sendEvent(roomID, eventType, eventWithoutType, senderMxid, useTimestamp)
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db.prepare("INSERT INTO event_message (event_id, event_type, event_subtype, message_id, part, reaction_part, source) VALUES (?, ?, ?, ?, ?, ?, 1)").run(eventID, eventType, event.msgtype || null, message.id, part, reactionPart) // source 1 = discord
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// The primary event is part = 0 and has the most important and distinct information. It is used to provide reply previews, be pinned, and possibly future uses.
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// The first event is chosen to be the primary part because it is usually the message text content and is more likely to be distinct.
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// For example, "Reply to 'this meme made me think of you'" is more useful than "Replied to image".
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// The last event gets reaction_part = 0. Reactions are managed there because reactions are supposed to appear at the bottom.
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eventIDs.push(eventID)
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}
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return eventIDs
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}
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module.exports.sendMessage = sendMessage
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