space and room creation

d2m/actions/create-room.js

@@ -1,22 +1,99 @@
 // @ts-check
 
-const reg = require("../../matrix/read-registration.js")
-const fetch = require("node-fetch")
+const assert = require("assert").strict
+const DiscordTypes = require("discord-api-types/v10")
 
-fetch("https://matrix.cadence.moe/_matrix/client/v3/createRoom?user_id=@_ooye_example:cadence.moe", {
-	method: "POST",
-	body: JSON.stringify({
-		invite: ["@cadence:cadence.moe"],
-		is_direct: false,
-		name: "New Bot User Room",
-		preset: "trusted_private_chat"
-	}),
-	headers: {
-		Authorization: `Bearer ${reg.as_token}`
+const passthrough = require("../../passthrough")
+const { discord, sync, db } = passthrough
+/** @type {import("../../matrix/mreq")} */
+const mreq = sync.require("../../matrix/mreq")
+/** @type {import("../../matrix/file")} */
+const file = sync.require("../../matrix/file")
+
+/**
+ * @param {import("discord-api-types/v10").APIGuildTextChannel} channel
+ */
+async function createRoom(channel) {
+	const guildID = channel.guild_id
+	assert.ok(guildID)
+	const guild = discord.guilds.get(guildID)
+	assert.ok(guild)
+	const spaceID = db.prepare("SELECT space_id FROM guild_space WHERE guild_id = ?").pluck().get(guildID)
+	assert.ok(typeof spaceID === "string")
+
+	const avatarEventContent = {}
+	if (guild.icon) {
+		avatarEventContent.url = await file.uploadDiscordFileToMxc(file.guildIcon(guild))
 	}
-}).then(res => res.text()).then(text => {
-	// {"room_id":"!aAVaqeAKwChjWbsywj:cadence.moe"}
-	console.log(text)
-}).catch(err => {
-	console.log(err)
-})
+
+	/** @type {import("../../types").R_RoomCreated} */
+	const root = await mreq.mreq("POST", "/client/v3/createRoom", {
+		name: channel.name,
+		topic: channel.topic || undefined,
+		preset: "private_chat",
+		visibility: "private",
+		invite: ["@cadence:cadence.moe"], // TODO
+		initial_state: [
+			{
+				type: "m.room.avatar",
+				state_key: "",
+				content: avatarEventContent
+			},
+			{
+				type: "m.room.guest_access",
+				state_key: "",
+				content: {
+					guest_access: "can_join"
+				}
+			},
+			{
+				type: "m.room.history_visibility",
+				state_key: "",
+				content: {
+					history_visibility: "invited"
+				}
+			},
+			{
+				type: "m.space.parent",
+				state_key: spaceID,
+				content: {
+					via: ["cadence.moe"], // TODO: put the proper server here
+					canonical: true
+				}
+			},
+			{
+				type: "m.room.join_rules",
+				content: {
+					join_rule: "restricted",
+					allow: [{
+						type: "m.room.membership",
+						room_id: spaceID
+					}]
+				}
+			}
+		]
+	})
+
+	db.prepare("INSERT INTO channel_room (channel_id, room_id) VALUES (?, ?)").run(channel.id, root.room_id)
+
+	// Put the newly created child into the space
+	await mreq.mreq("PUT", `/client/v3/rooms/${spaceID}/state/m.space.child/${root.room_id}`, {
+		via: ["cadence.moe"] // TODO: use the proper server
+	})
+}
+
+async function createAllForGuild(guildID) {
+	const channelIDs = discord.guildChannelMap.get(guildID)
+	assert.ok(channelIDs)
+	for (const channelID of channelIDs) {
+		const channel = discord.channels.get(channelID)
+		assert.ok(channel)
+		const existing = db.prepare("SELECT room_id FROM channel_room WHERE channel_id = ?").pluck().get(channel.id)
+		if (channel.type === DiscordTypes.ChannelType.GuildText && !existing) {
+			await createRoom(channel)
+		}
+	}
+}
+
+module.exports.createRoom = createRoom
+module.exports.createAllForGuild = createAllForGuild

d2m/actions/create-space.js

@@ -0,0 +1,46 @@
+// @ts-check
+
+const passthrough = require("../../passthrough")
+const { sync, db } = passthrough
+/** @type {import("../../matrix/mreq")} */
+const mreq = sync.require("../../matrix/mreq")
+
+/**
+ * @param {import("discord-api-types/v10").RESTGetAPIGuildResult} guild
+ */
+function createSpace(guild) {
+	return mreq.mreq("POST", "/client/v3/createRoom", {
+		name: guild.name,
+		preset: "private_chat",
+		visibility: "private",
+		power_level_content_override: {
+			events_default: 100,
+			invite: 50
+		},
+		invite: ["@cadence:cadence.moe"], // TODO
+		topic: guild.description || undefined,
+		creation_content: {
+			type: "m.space"
+		},
+		initial_state: [
+			{
+				type: "m.room.guest_access",
+				state_key: "",
+				content: {
+					guest_access: "can_join"
+				}
+			},
+			{
+				type: "m.room.history_visibility",
+				content: {
+					history_visibility: "invited"
+				}
+			}
+		]
+	}).then(/** @param {import("../../types").R_RoomCreated} root */ root => {
+		db.prepare("INSERT INTO guild_space (guild_id, space_id) VALUES (?, ?)").run(guild.id, root.room_id)
+		return root
+	})
+}
+
+module.exports.createSpace = createSpace

d2m/actions/send-message.js

@@ -10,7 +10,7 @@ const messageToEvent = require("../converters/message-to-event.js")
  */
 function sendMessage(message) {
 	const event = messageToEvent(message)
-	fetch(`https://matrix.cadence.moe/_matrix/client/v3/rooms/!VwVlIAjOjejUpDhlbA:cadence.moe/send/m.room.message/${makeTxnId()}?user_id=@_ooye_example:cadence.moe`, {
+	return fetch(`https://matrix.cadence.moe/_matrix/client/v3/rooms/!VwVlIAjOjejUpDhlbA:cadence.moe/send/m.room.message/${makeTxnId()}?user_id=@_ooye_example:cadence.moe`, {
 		method: "PUT",
 		body: JSON.stringify(event),
 		headers: {
@@ -24,4 +24,4 @@ function sendMessage(message) {
 	})
 }
 
-module.exports = sendMessage
+module.exports.sendMessage = sendMessage

d2m/discord-packets.js

@@ -2,6 +2,7 @@
 
 // Discord library internals type beat
 
+const DiscordTypes = require("discord-api-types/v10")
 const passthrough = require("../passthrough")
 const { sync } = passthrough
 
@@ -27,6 +28,8 @@ const utils = {
 			const arr = []
 			client.guildChannelMap.set(message.d.id, arr)
 			for (const channel of message.d.channels || []) {
+				// @ts-ignore
+				channel.guild_id = message.d.id
 				arr.push(channel.id)
 				client.channels.set(channel.id, channel)
 			}

d2m/event-dispatcher.js

@@ -1,8 +1,14 @@
 // @ts-check
 
-// Grab Discord events we care about for the bridge, check them, and pass them on
+const {sync} = require("../passthrough")
 
-const sendMessage = require("./actions/send-message")
+/** @type {import("./actions/create-space")}) */
+const createSpace = sync.require("./actions/create-space")
+
+/** @type {import("./actions/send-message")}) */
+const sendMessage = sync.require("./actions/send-message")
+
+// Grab Discord events we care about for the bridge, check them, and pass them on
 
 module.exports = {
 	/**
@@ -10,10 +16,7 @@ module.exports = {
 	 * @param {import("discord-api-types/v10").GatewayMessageCreateDispatchData} message
 	 */
 	onMessageCreate(client, message) {
-		console.log(message)
-		console.log(message.guild_id)
-		console.log(message.member)
-		sendMessage(message)
+		sendMessage.sendMessage(message)
 	},
 
 	/**

index.js

@@ -1,13 +1,15 @@
 // @ts-check
 
+const sqlite = require("better-sqlite3")
 const HeatSync = require("heatsync")
 
 const config = require("./config")
 const passthrough = require("./passthrough")
+const db = new sqlite("db/ooye.db")
 
 const sync = new HeatSync()
 
-Object.assign(passthrough, { config, sync })
+Object.assign(passthrough, { config, sync, db })
 
 const DiscordClient = require("./d2m/discord-client")
 

matrix/file.js

@@ -0,0 +1,63 @@
+// @ts-check
+
+const fetch = require("node-fetch")
+
+const passthrough = require("../passthrough")
+const { sync, db } = passthrough
+/** @type {import("./mreq")} */
+const mreq = sync.require("./mreq")
+
+const DISCORD_IMAGES_BASE = "https://cdn.discordapp.com"
+const IMAGE_SIZE = 1024
+
+/** @type {Map<string, Promise<string>>} */
+const inflight = new Map()
+
+/**
+ * @param {string} path
+ */
+async function uploadDiscordFileToMxc(path) {
+	const url = DISCORD_IMAGES_BASE + path
+
+	// Are we uploading this file RIGHT NOW? Return the same inflight promise with the same resolution
+	let existing = inflight.get(url)
+	if (typeof existing === "string") {
+		return existing
+	}
+
+	// Has this file already been uploaded in the past? Grab the existing copy from the database.
+	existing = db.prepare("SELECT mxc_url FROM file WHERE discord_url = ?").pluck().get(url)
+	if (typeof existing === "string") {
+		return existing
+	}
+
+	// Download from Discord
+	const promise = fetch(url, {}).then(/** @param {import("node-fetch").Response} res */ async res => {
+		/** @ts-ignore @type {import("stream").Readable} body */
+		const body = res.body
+
+		// Upload to Matrix
+		/** @type {import("../types").R_FileUploaded} */
+		const root = await mreq.mreq("POST", "/media/v3/upload", body, {
+			headers: {
+				"Content-Type": res.headers.get("content-type")
+			}
+		})
+
+		// Store relationship in database
+		db.prepare("INSERT INTO file (discord_url, mxc_url) VALUES (?, ?)").run(url, root.content_uri)
+		inflight.delete(url)
+
+		return root.content_uri
+	})
+	inflight.set(url, promise)
+
+	return promise
+}
+
+function guildIcon(guild) {
+	return `/icons/${guild.id}/${guild.icon}?size=${IMAGE_SIZE}`
+}
+
+module.exports.guildIcon = guildIcon
+module.exports.uploadDiscordFileToMxc = uploadDiscordFileToMxc

matrix/mreq.js

@@ -0,0 +1,47 @@
+// @ts-check
+
+const fetch = require("node-fetch")
+const mixin = require("mixin-deep")
+
+const passthrough = require("../passthrough")
+const { sync } = passthrough
+/** @type {import("./read-registration")} */
+const reg = sync.require("./read-registration.js")
+
+const baseUrl = "https://matrix.cadence.moe/_matrix"
+
+class MatrixServerError {
+	constructor(data) {
+		this.data = data
+		/** @type {string} */
+		this.errcode = data.errcode
+		/** @type {string} */
+		this.error = data.error
+	}
+}
+
+/**
+ * @param {string} method
+ * @param {string} url
+ * @param {any} [body]
+ * @param {any} [extra]
+ */
+function mreq(method, url, body, extra = {}) {
+	const opts = mixin({
+		method,
+		body: (body == undefined || Object.is(body.constructor, Object)) ? JSON.stringify(body) : body,
+		headers: {
+			Authorization: `Bearer ${reg.as_token}`
+		}
+	}, extra)
+	console.log(baseUrl + url, opts)
+	return fetch(baseUrl + url, opts).then(res => {
+		return res.json().then(root => {
+			if (!res.ok || root.errcode) throw new MatrixServerError(root)
+			return root
+		})
+	})
+}
+
+module.exports.MatrixServerError = MatrixServerError
+module.exports.mreq = mreq

matrix/read-registration.js

@@ -3,11 +3,5 @@
 const fs = require("fs")
 const yaml = require("js-yaml")
 
-/** 
- * @typedef AppServiceRegistrationConfig
- * @property {string} id
- * @property {string} as_token
- * @property {string} hs_token
- */
-
+/** @type {import("../types").AppServiceRegistrationConfig} */
 module.exports = yaml.load(fs.readFileSync("registration.yaml", "utf8"))

notes.md

@@ -36,6 +36,13 @@ Public channels in that server should then use the following settings, so that t
 - Find & join access: Space members (so users must have been invited to the space already, even if they find out the room ID to join)
 - Who can read history: Anyone (so that people can see messages during the preview before joining)
 
+Step by step process:
+
+1. Create a space room for the guild. Store the guild-space ID relationship in the database. Configure the space room to act like a space.
+	- `{"name":"NAME","preset":"private_chat","visibility":"private","power_level_content_override":{"events_default":100,"invite":50},"topic":"TOPIC","creation_content":{"type":"m.space"},"initial_state":[{"type":"m.room.guest_access","state_key":"","content":{"guest_access":"can_join"}},{"type":"m.room.history_visibility","content":{"history_visibility":"invited"}}]}`
+2. Create channel rooms for the channels. Store the channel-room ID relationship in the database. (Probably no need to store parent-child relationships in the database?)
+3. Send state events to put the channel rooms in the space.
+
 ### Private channels
 
 Discord **channels** that disallow view permission to @everyone should instead have the following **room** settings in Matrix:
@@ -58,6 +65,13 @@ The context-sensitive /invite command will invite Matrix users to the correspond
 1. Transform content.
 2. Send to matrix.
 
+## Webhook message sent
+
+- Consider using the _ooye_bot account to send all webhook messages to prevent extraneous joins?
+	- Downside: the profile information from the most recently sent message would stick around in the member list. This is toleable.
+- Otherwise, could use an account per webhook ID, but if webhook IDs are often deleted and re-created, this could still end up leaving too many accounts in the room.
+- The original bridge uses an account per webhook display name, which does the most sense in terms of canonical accounts, but leaves too many accounts in the room.
+
 ## Message deleted
 
 1. Look up equivalents on matrix.
@@ -91,4 +105,13 @@ The context-sensitive /invite command will invite Matrix users to the correspond
 	1. Create the corresponding room.
 	2. Add to database.
 3. Update room details to match.
-4. Add to space.
+4. Make sure the permissions are correct according to the rules above!
+5. Add to space.
+
+## Emojis updated
+
+1. Upload any newly added images to msc.
+2. Create or replace state event for the bridged pack. (Can just use key "ooye" and display name "Discord", or something, for this pack.)
+3. The emojis may now be sent by Matrix users!
+
+TOSPEC: m2d emoji uploads??

package-lock.json

@@ -16,6 +16,7 @@
         "js-yaml": "^4.1.0",
         "matrix-appservice": "^2.0.0",
         "matrix-js-sdk": "^24.1.0",
+        "mixin-deep": "^2.0.1",
         "node-fetch": "^2.6.7",
         "snowtransfer": "^0.7.0",
         "supertape": "^8.3.0"
@@ -1696,6 +1697,14 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/mixin-deep": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/mixin-deep/-/mixin-deep-2.0.1.tgz",
+      "integrity": "sha512-imbHQNRglyaplMmjBLL3V5R6Bfq5oM+ivds3SKgc6oRtzErEnBUUc5No11Z2pilkUvl42gJvi285xTNswcKCMA==",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/mkdirp-classic": {
       "version": "0.5.3",
       "resolved": "https://registry.npmjs.org/mkdirp-classic/-/mkdirp-classic-0.5.3.tgz",

package.json

@@ -22,6 +22,7 @@
     "js-yaml": "^4.1.0",
     "matrix-appservice": "^2.0.0",
     "matrix-js-sdk": "^24.1.0",
+    "mixin-deep": "^2.0.1",
     "node-fetch": "^2.6.7",
     "snowtransfer": "^0.7.0",
     "supertape": "^8.3.0"

passthrough.js

@@ -6,6 +6,7 @@
  * @property {typeof import("./config")} config
  * @property {import("./d2m/discord-client")} discord
  * @property {import("heatsync")} sync
+ * @property {import("better-sqlite3/lib/database")} db
  */
 /** @type {Passthrough} */
 // @ts-ignore

stdin.js

@@ -4,7 +4,12 @@ const repl = require("repl")
 const util = require("util")
 
 const passthrough = require("./passthrough")
-const { discord, config, sync } = passthrough
+const { discord, config, sync, db } = passthrough
+
+const createSpace = sync.require("./d2m/actions/create-space.js")
+const createRoom = sync.require("./d2m/actions/create-room.js")
+const mreq = sync.require("./matrix/mreq.js")
+const guildID = "112760669178241024"
 
 const extraContext = {}
 

types.d.ts

@@ -1,6 +1,24 @@
+export type AppServiceRegistrationConfig = {
+	id: string
+	as_token: string
+	hs_token: string
+	url: string
+	sender_localpart: string
+	protocols: [string]
+	rate_limited: boolean
+}
+
 export type M_Room_Message_content = {
 	msgtype: "m.text"
 	body: string
 	formatted_body?: "org.matrix.custom.html"
 	format?: string
 }
+
+export type R_RoomCreated = {
+	room_id: string
+}
+
+export type R_FileUploaded = {
+	content_uri: string
+}