sending events in matrix

.gitignore

@@ -1,4 +1,3 @@
-/node_modules
-package-lock.json
-
-/config.js
+node_modules
+config.js
+registration.yaml

d2m/actions/create-room.js

@@ -0,0 +1,22 @@
+// @ts-check
+
+const reg = require("../../matrix/read-registration.js")
+const fetch = require("node-fetch")
+
+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}`
+	}
+}).then(res => res.text()).then(text => {
+	// {"room_id":"!aAVaqeAKwChjWbsywj:cadence.moe"}
+	console.log(text)
+}).catch(err => {
+	console.log(err)
+})

d2m/actions/register-user.js

@@ -0,0 +1,20 @@
+// @ts-check
+
+const reg = require("../../matrix/read-registration.js")
+const fetch = require("node-fetch")
+
+fetch("https://matrix.cadence.moe/_matrix/client/v3/register", {
+	method: "POST",
+	body: JSON.stringify({
+		type: "m.login.application_service",
+		username: "_ooye_example"
+	}),
+	headers: {
+		Authorization: `Bearer ${reg.as_token}`
+	}
+}).then(res => res.text()).then(text => {
+	// {"user_id":"@_ooye_example:cadence.moe","home_server":"cadence.moe","access_token":"XXX","device_id":"XXX"}
+	console.log(text)
+}).catch(err => {
+	console.log(err)
+})

d2m/actions/send-message.js

@@ -0,0 +1,27 @@
+// @ts-check
+
+const reg = require("../../matrix/read-registration.js")
+const makeTxnId = require("../../matrix/txnid.js")
+const fetch = require("node-fetch")
+const messageToEvent = require("../converters/message-to-event.js")
+
+/**
+ * @param {import("discord-api-types/v10").GatewayMessageCreateDispatchData} message
+ */
+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`, {
+		method: "PUT",
+		body: JSON.stringify(event),
+		headers: {
+			Authorization: `Bearer ${reg.as_token}`
+		}
+	}).then(res => res.text()).then(text => {
+		// {"event_id":"$4Zxs0fMmYlbo-sTlMmSEvwIs9b4hcg6yORzK0Ems84Q"}
+		console.log(text)
+	}).catch(err => {
+		console.log(err)
+	})
+}
+
+module.exports = sendMessage

d2m/converters/message-to-event.js

@@ -6,21 +6,21 @@ const markdown = require("discord-markdown")
  * @param {import("discord-api-types/v10").APIMessage} message
  * @returns {import("../../types").M_Room_Message_content}
  */
-module.exports = function(message) {
+module.exports = function messageToEvent(message) {
 	const body = message.content
 	const html = markdown.toHTML(body, {
-		discordCallback: {
+		/* discordCallback: {
 			user: Function,
 			channel: Function,
 			role: Function,
 			everyone: Function,
 			here: Function
-		}
+		} */
 	}, null, null)
 	return {
 		msgtype: "m.text",
 		body: body,
-		format: "m.custom.html",
+		format: "org.matrix.custom.html",
 		formatted_body: html
 	}
 }

d2m/discord-packets.js

@@ -1,5 +1,7 @@
 // @ts-check
 
+// Discord library internals type beat
+
 const passthrough = require("../passthrough")
 const { sync } = passthrough
 

d2m/event-dispatcher.js

@@ -1,5 +1,9 @@
 // @ts-check
 
+// Grab Discord events we care about for the bridge, check them, and pass them on
+
+const sendMessage = require("./actions/send-message")
+
 module.exports = {
 	/**
 	 * @param {import("./discord-client")} client
@@ -9,7 +13,7 @@ module.exports = {
 		console.log(message)
 		console.log(message.guild_id)
 		console.log(message.member)
-		return {}
+		sendMessage(message)
 	},
 
 	/**

matrix/read-registration.js

@@ -0,0 +1,4 @@
+const fs = require("fs")
+const yaml = require("js-yaml")
+
+module.exports = yaml.load(fs.readFileSync("registration.yaml", "utf8"))

matrix/txnid.js

@@ -0,0 +1,7 @@
+// @ts-check
+
+let now = Date.now()
+
+module.exports = function makeTxnId() {
+	return now++
+}

notes.md

@@ -5,7 +5,7 @@ Remember that a discord message may be transformed to multiple matrix messages.
 A database will be used to store the discord id to matrix event id mapping. Table columns:
 - discord id
 - matrix id
-- the "type" of the matrix id, used to update things properly next time. for example, whether it is the message text or an attachment
+- the "type" of the matrix id, used to update things properly next time. for example, whether it is the message text or an attachment. alternatively, whether it is a primary or supporting event for the discord message, primary being message content and supporting being embeds or attachments or etc.
 
 There needs to be a way to easily manually trigger something later. For example, it should be easy to manually retry sending a message, or check all members for changes, etc.
 
@@ -22,6 +22,35 @@ There needs to be a way to easily manually trigger something later. For example,
 5. Send attachments.
 6. Store in database.
 
+## Discord's permissions in spaces
+
+### The space itself
+
+Discord guilds are invite only, so the corresponding **space** should initially be set to:
+
+- Find & join access: Invite only
+- Preview space: Yes
+
+Public channels in that server should then use the following settings, so that they can be opened by anyone who was successfully invited to the space:
+
+- 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)
+
+### Private channels
+
+Discord **channels** that disallow view permission to @everyone should instead have the following **room** settings in Matrix:
+
+- Find & join access: Private (so space members cannot join without an additional invitation)
+- Who can read history: Anyone (XXX: is this safe??? is this a fishbowl situation? https://github.com/matrix-org/synapse/issues/9202)
+
+### Discord experience
+
+To add an initial Matrix user to the **space**, a Discord member would use /invite @cadence:cadence.moe in any channel. If this member has create invite permissions, then the bridge bot should send a Matrix invite to the **space** for @cadence:cadence.moe.
+
+Not yet sure how access to private **channels** would be granted to individual Matrix users. Maybe somebody with Manage Server can use another invite command?
+
+# d2m events
+
 ## Message sent
 
 1. Transform content.

package.json

@@ -19,8 +19,10 @@
     "cloudstorm": "^0.7.0",
     "discord-markdown": "git+https://git.sr.ht/~cadence/nodejs-discord-markdown#24508e701e91d5a00fa5e773ced874d9ee8c889b",
     "heatsync": "^2.4.0",
+    "js-yaml": "^4.1.0",
     "matrix-appservice": "^2.0.0",
     "matrix-js-sdk": "^24.1.0",
+    "node-fetch": "^2.6.7",
     "snowtransfer": "^0.7.0",
     "supertape": "^8.3.0"
   },

scripts/register.js

@@ -0,0 +1,22 @@
+// @ts-check
+
+const { AppServiceRegistration } = require("matrix-appservice");
+
+let id = AppServiceRegistration.generateToken()
+try {
+	const reg = require("../matrix/read-registration")
+	if (reg.id) id = reg.id
+} catch (e) {}
+
+// creating registration files
+const newReg = new AppServiceRegistration(null);
+newReg.setAppServiceUrl("http://localhost:6693");
+newReg.setId(id);
+newReg.setHomeserverToken(AppServiceRegistration.generateToken());
+newReg.setAppServiceToken(AppServiceRegistration.generateToken());
+newReg.setSenderLocalpart("_ooye_bot");
+newReg.addRegexPattern("users", "@_ooye_.*", true);
+newReg.addRegexPattern("aliases", "#_ooye_.*", true);
+newReg.setProtocols(["discord"]); // For 3PID lookups
+newReg.setRateLimited(false);
+newReg.outputAsYaml("registration.yaml");