Matrix implementation

Implement a very small subset of the Matrix protocol.

src/auth.ts

@@ -1,8 +1,9 @@
 import { NextFunction, Request, Response } from "express";
-import { JwtPayload, sign, verify } from "jsonwebtoken";
+import { sign, verify } from "jsonwebtoken";
 import { query } from "./database";
 import { errors } from "./errors";
 import serverConfig from "./serverconfig";
+import { compare } from "bcrypt";
 
 const jwtSecret = process.env.JWT_SECRET || "[generic token]";
 
@@ -30,7 +31,7 @@ export function getPublicUserObject(user: User) {
     return newUser;
 }
 
-export function signToken(userId: number) {
+export function signToken(userId: number): Promise<string> {
     return new Promise((resolve, reject) => {
         const payload = {
             id: userId,
@@ -48,7 +49,7 @@ export function signToken(userId: number) {
                     reject(error);
                     return;
                 }
-                if (!encoded) {
+                if (!encoded || typeof encoded !== "string") {
                     reject("got undefined encoded value");
                     return;
                 }
@@ -102,6 +103,19 @@ export async function decodeTokenOrNull(encoded: string): Promise<User | undefin
     }
 }
 
+export async function loginAttempt(username: string, password: string): Promise<string | null> {
+    const existingUser = await query("SELECT * FROM users WHERE username = $1", [username]);
+    if (!existingUser || existingUser.rowCount < 1) {
+        return null;
+    }
+
+    if (!await compare(password, existingUser.rows[0].password)) {
+        return null;
+    }
+
+    return await signToken(existingUser.rows[0].id);
+}
+
 export function authenticateRoute() {
     return async (req: Request, res: Response, next: NextFunction) => {
         const pass = (user: User | null = null) => {
@@ -117,17 +131,25 @@ export function authenticateRoute() {
             next();
         };
 
-        const authHeader = req.get("Authorization");
-        if (!authHeader) return pass();
+        let authHeader = req.get("Authorization");
+        let token: string;
+        if (authHeader) {
+            const authParts = authHeader.split(" ");
+            if (authParts.length !== 2) return pass();
     
-        const authParts = authHeader.split(" ");
-        if (authParts.length !== 2) return pass();
+            const [ authType, authToken ] = authParts;
+            if (authType !== "Bearer") return pass();
+            if (typeof authToken !== "string") return pass();
 
-        const [ authType, authToken ] = authParts;
-        if (authType !== "Bearer") return pass();
-        if (typeof authToken !== "string") return pass();
+            token = authToken;
+        } else {
+            let authToken = req.query.access_token;
+            if (typeof authToken !== "string") return pass();
 
-        decodeTokenOrNull(authToken).then((decoded) => {
+            token = authToken;
+        }
+
+        decodeTokenOrNull(token).then((decoded) => {
             pass(decoded);
         }).catch(() => {
             pass(null);

src/database/index.ts

@@ -1,4 +1,4 @@
-import { Pool, QueryResult } from "pg";
+import { Pool, PoolClient, QueryResult } from "pg";
 
 const pool = new Pool();
 
@@ -23,3 +23,19 @@ export const query = function(text: string, params: any[] = [], rejectOnError =
             });
     });
 };
+
+export async function withClient(callback: (client: PoolClient) => Promise<any>): Promise<any> {
+    const client = await pool.connect();
+    let result = null
+
+    try {
+        result = await callback(client);
+    } catch(o_O) {
+        console.error("error: exception during withClient callback, going to release client and rethrow...");
+        client.release();
+        throw o_O;
+    }
+
+    client.release();
+    return result;
+}

src/database/templates.ts

@@ -1,3 +1,4 @@
 export const getMessageById = "SELECT messages.id, messages.content, messages.channel_id, messages.created_at, messages.author_id, users.username AS author_username FROM messages JOIN users ON messages.author_id = users.id WHERE messages.id = $1";
 export const getMessagesByChannelFirstPage = (limit: number) => `SELECT messages.id, messages.content, messages.channel_id, messages.created_at, messages.author_id, users.username AS author_username FROM messages JOIN users ON messages.author_id = users.id WHERE messages.channel_id = $1 ORDER BY id DESC LIMIT ${limit}`;
 export const getMessagesByChannelPage = (limit: number) => `SELECT messages.id, messages.content, messages.channel_id, messages.created_at, messages.author_id, users.username AS author_username FROM messages JOIN users ON messages.author_id = users.id WHERE messages.id < $1 AND messages.channel_id = $2 ORDER BY id DESC LIMIT ${limit}`;
+export const getMessagesByChannelAfterPage = (limit: number) => `SELECT messages.id, messages.content, messages.channel_id, messages.created_at, messages.author_id, users.username AS author_username FROM messages JOIN users ON messages.author_id = users.id WHERE messages.id > $1 AND messages.channel_id = $2 ORDER BY id DESC LIMIT ${limit}`;

src/gateway/index.ts

@@ -19,6 +19,49 @@ const dispatchChannels = new Map<string, Set<WebSocket>>();
 // mapping between a user id and the websocket sessions it has
 const sessionsByUserId = new Map<number, WebSocket[]>();
 
+// mapping between a dispatch id and a temporary handler
+const dispatchTemporary = new Map<string, Set<(payload: GatewayPayload) => void>>();
+
+export function handle(channels: string[], handler: (payload: GatewayPayload) => void): (() => any) {
+    channels.forEach(c => {
+        if (!dispatchTemporary.get(c)) {
+            dispatchTemporary.set(c, new Set());
+        }
+        dispatchTemporary.get(c)?.add(handler);
+    });
+    return () => {
+        channels.forEach(c => {
+            dispatchTemporary.get(c)?.delete(handler);
+            if (dispatchTemporary.get(c)?.size === 0) {
+                dispatchTemporary.delete(c);
+            }
+        });
+    };
+}
+
+export function waitForEvent(channels: string[], timeout: number) {
+    return new Promise((resolve, reject) => {
+        let finished = false;
+        let clean = () => {};
+
+        const timeoutHandle = setTimeout(() => {
+            if (finished) return;
+
+            finished = true;
+            clean();
+            resolve(false);
+        }, timeout);
+        clean = handle(channels, () => {
+            if (finished) return;
+
+            finished = true;
+            clearTimeout(timeoutHandle);
+            clean();
+            resolve(true);
+        });
+    });
+}
+
 function clientSubscribe(ws: WebSocket, dispatchChannel: string) {
     ws.state.dispatchChannels.add(dispatchChannel);
     if (!dispatchChannels.get(dispatchChannel)) {
@@ -67,7 +110,7 @@ function clientUnsubscribeAll(ws: WebSocket) {
     ws.state.dispatchChannels = new Set();
 }
 
-export function dispatch(channel: string, message: GatewayPayload | ((ws: WebSocket) => GatewayPayload)) {
+export function dispatch(channel: string, message: GatewayPayload | ((ws: WebSocket | null) => GatewayPayload)) {
     const members = dispatchChannels.get(channel);
     if (!members) return;
 
@@ -80,6 +123,18 @@ export function dispatch(channel: string, message: GatewayPayload | ((ws: WebSoc
             e.send(JSON.stringify(data));
         }
     });
+
+    const handlers = dispatchTemporary.get(channel);
+    if (handlers) {
+        handlers.forEach(e => {
+            let data = message;
+            if (typeof message === "function") {
+                data = message(null);
+            }
+            e(data as GatewayPayload);
+        });
+        dispatchTemporary.delete(channel);
+    }
 }
 
 function closeWithError(ws: WebSocket, { code, message }: { code: number, message: string }) {

src/impl.ts

@@ -0,0 +1,42 @@
+import { query } from "./database";
+import { dispatch } from "./gateway";
+import { GatewayPayloadType } from "./gateway/gatewaypayloadtype";
+
+export default async function sendMessage(user: User, channelId: number, optimisticId: number | null, content: string) {
+    const authorId = user.id;
+    const createdAt = Date.now().toString();
+
+    const result = await query("INSERT INTO messages(content, channel_id, author_id, created_at) VALUES ($1, $2, $3, $4) RETURNING id", [content, channelId, authorId, createdAt]);
+    if (!result || result.rowCount < 1) {
+        return null;
+    }
+
+    let returnObject: any = {
+        id: result.rows[0].id,
+        content,
+        channel_id: channelId,
+        author_id: authorId,
+        author_username: user.username,
+        created_at: createdAt
+    };
+
+    dispatch(`channel:${channelId}`, (ws) => {
+        let payload: any = returnObject;
+        if (ws && ws.state && ws.state.user && ws.state.user.id === user.id && optimisticId) {
+            payload = {
+                ...payload,
+                optimistic_id: optimisticId
+            }
+            returnObject = {
+                ...returnObject,
+                optimistic_id: optimisticId
+            };
+        }
+        return {
+            t: GatewayPayloadType.MessageCreate,
+            d: payload
+        };
+    });
+
+    return returnObject;
+}

src/routes/api/v1/channels.ts

@@ -6,6 +6,7 @@ import { getMessageById, getMessagesByChannelFirstPage, getMessagesByChannelPage
 import { errors } from "../../../errors";
 import { dispatch, dispatchChannelSubscribe } from "../../../gateway";
 import { GatewayPayloadType } from "../../../gateway/gatewaypayloadtype";
+import sendMessage from "../../../impl";
 import serverConfig from "../../../serverconfig";
 
 const router = express.Router();
@@ -180,47 +181,7 @@ router.post(
             return res.status(400).json({ ...errors.INVALID_DATA, errors: validationErrors.array() });
         }
 
-        const optimisticId = parseInt(req.body.optimistic_id);
-        const channelId = parseInt(req.params.id);
-        const { content } = req.body;
-        const authorId = req.user.id;
-        const createdAt = Date.now().toString();
-
-        const result = await query("INSERT INTO messages(content, channel_id, author_id, created_at) VALUES ($1, $2, $3, $4) RETURNING id", [content, channelId, authorId, createdAt]);
-        if (!result || result.rowCount < 1) {
-            return res.status(500).json({
-                ...errors.GOT_NO_DATABASE_DATA
-            });
-        }
-
-        let returnObject: any = {
-            id: result.rows[0].id,
-            content,
-            channel_id: channelId,
-            author_id: authorId,
-            author_username: req.user.username,
-            created_at: createdAt
-        };
-
-        dispatch(`channel:${channelId}`, (ws) => {
-            let payload: any = returnObject;
-            if (ws.state && ws.state.user && ws.state.user.id === req.user.id && optimisticId) {
-                payload = {
-                    ...payload,
-                    optimistic_id: optimisticId
-                }
-                returnObject = {
-                    ...returnObject,
-                    optimistic_id: optimisticId
-                };
-            }
-            return {
-                t: GatewayPayloadType.MessageCreate,
-                d: payload
-            };
-        });
-
-        return res.status(201).send(returnObject);
+        return res.status(201).send(await sendMessage(req.user, parseInt(req.params.id), parseInt(req.body.optimistic_id), req.body.content));
     }
 );
 

src/routes/api/v1/users.ts

@@ -3,7 +3,7 @@ import { query } from "../../../database";
 import express from "express";
 import { body, validationResult } from "express-validator";
 import { compare, hash, hashSync } from "bcrypt";
-import { authenticateRoute, signToken } from "../../../auth";
+import { authenticateRoute, loginAttempt, signToken } from "../../../auth";
 
 const router = express.Router();
 
@@ -76,19 +76,11 @@ router.post(
             return res.status(400).json({ ...errors.BAD_LOGIN_CREDENTIALS });
         }
 
-        const { username, password } = req.body;
-
-        const existingUser = await query("SELECT * FROM users WHERE username = $1", [username]);
-        if (!existingUser || existingUser.rowCount < 1) {
+        const token = await loginAttempt(req.body.username, req.body.password);
+        if (!token) {
             return res.status(400).json({ ...errors.BAD_LOGIN_CREDENTIALS });
         }
 
-        if (!await compare(password, existingUser.rows[0].password)) {
-            return res.status(400).json({ ...errors.BAD_LOGIN_CREDENTIALS });
-        }
-
-        const token = await signToken(existingUser.rows[0].id);
-
         return res.status(200).send({ token });
     }
 );

src/routes/matrix/index.ts

@@ -0,0 +1,417 @@
+import express from "express";
+import { body, validationResult } from "express-validator";
+import { PoolClient } from "pg";
+import { authenticateRoute, loginAttempt } from "../../auth";
+import { query, withClient } from "../../database";
+import { getMessagesByChannelAfterPage, getMessagesByChannelFirstPage } from "../../database/templates";
+import { handle, waitForEvent } from "../../gateway";
+import sendMessage from "../../impl";
+
+const router = express.Router();
+
+const matrixHomeserverBaseUrl = process.env.MATRIX_HOMESERVER_BASE_URL ? process.env.MATRIX_HOMESERVER_BASE_URL : "localhost:3000";
+const matrixWaffleAppUrl = process.env.MATRIX_WAFFLE_APP_URL ? process.env.MATRIX_WAFFLE_APP_URL : "localhost:3000";
+const matrixDeviceId = "xyz.hippoz.waffle.generic_matrix_client.device";
+const matrixRootUser = `@waffleGateway:${matrixHomeserverBaseUrl}`;
+
+const usernameToMatrix = (username: string) => `@${username}:${matrixHomeserverBaseUrl}`;
+const inventRoomEventId = (channelId: number, kind: string) => `$${channelId}${kind}:${matrixHomeserverBaseUrl}`;
+const roomToChannelId = (room?: any): number | null => {
+    if (typeof room !== "string") return null;
+    const parts = room.split(":", 1);
+    if (parts.length !== 1) return null;
+    const suffixedId = parts[0];
+    if (!suffixedId.startsWith("!")) return null;
+    const id = suffixedId.substring(1, suffixedId.length);
+    if (!id || id.length < 1) return null;
+    const numberId = parseInt(id);
+    if (!isFinite(numberId) || isNaN(numberId)) return null;
+
+    return numberId;
+};
+
+interface MatrixSyncCursors {
+    [channel_id: number]: number;
+};
+
+async function buildSyncPayload(user: User, cursors: MatrixSyncCursors, onlyOutstandingEvents: boolean, client: PoolClient, channels: Channel[]) {
+    const joinedChannels: any[any] = {};
+    let nextBatchCursors = "";
+    for (let i = 0; i < channels.length; i++) {
+        const channel = channels[i];
+        const roomId = `!${channel.id}:${matrixHomeserverBaseUrl}`;
+
+        let channelMessagesResult;
+        if (cursors[channel.id]) {
+            channelMessagesResult = await client.query(getMessagesByChannelAfterPage(50), [cursors[channel.id], channel.id]);
+        } else {
+            channelMessagesResult = await client.query(getMessagesByChannelFirstPage(50), [channel.id]);
+        }
+        const messages = channelMessagesResult && channelMessagesResult.rows ? channelMessagesResult.rows.reverse() : [];
+        const messagesTimeline = messages.map(e => ({
+            content: {
+                body: e.content,
+                msgtype: "m.text",
+            },
+            event_id: inventRoomEventId(e.id, "message"),
+            origin_server_ts: parseInt(e.created_at),
+            room_id: roomId,
+            sender: usernameToMatrix(e.author_username),
+            type: "m.room.message"
+        }));
+
+        if (messages.length > 0) {
+            nextBatchCursors += `${channel.id}:${messages[messages.length - 1].id};`;
+        } else if (cursors[channel.id]) {
+            nextBatchCursors += `${channel.id}:${cursors[channel.id]};`;
+        }
+
+        if (messages.length < 1 && onlyOutstandingEvents) {
+            continue;
+        }
+
+        joinedChannels[roomId] = {
+            account_data: {events: []},
+            ephemeral: {events: []},
+            state: {events:[
+                {
+                    type: "m.room.member",
+                    event_id: inventRoomEventId(channel.id, "member_join"),
+                    origin_server_ts: 0,
+                    room_id: roomId,
+                    sender: usernameToMatrix(user.username),
+                    state_key: usernameToMatrix(user.username),
+                    content: {
+                        membership: "join"
+                    }
+                },
+                {
+                    type: "m.room.name",
+                    sender: matrixRootUser,
+                    state_key: "",
+                    content: {
+                        name: channel.name
+                    }
+                },
+                {
+                    type: "m.room.create",
+                    sender: matrixRootUser,
+                    state_key: "",
+                    content: {
+                        creator: matrixRootUser,
+                        "m.federate": false,
+                        room_version: 1
+                    }
+                },
+            ]},
+            summary: {
+                "m.heroes": [
+                    matrixRootUser
+                ],
+                "m.invited_member_count": 0,
+                "m.joined_member_count": 0     
+            },
+            timeline: {events: [
+                ...messagesTimeline
+            ], limited: false, prev_batch: "__prev_batch__not_implemented__"},
+            unread_notifications: {
+                highlight_count: 0,
+                notification_count: 0
+            },      
+        };
+    }
+
+    return {
+        next_batch: nextBatchCursors,
+        rooms: {
+            invite: {},
+            join: joinedChannels,
+            knock: {},
+            leave: {}
+        }
+    };
+}
+
+router.use((_req, res, next) => {
+    res.header("Access-Control-Allow-Origin", "*");
+    res.header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
+    res.header("Access-Control-Allow-Headers", "X-Requested-With, Content-Type, Authorization");
+    next();
+});
+
+router.get("/.well-known/matrix/client", (req, res) => {
+    res.json({
+        "m.homeserver": {
+            "base_url": `http://${matrixHomeserverBaseUrl}`
+        },
+        "xyz.hippoz.waffle": {
+            "app_url": matrixWaffleAppUrl
+        }
+    });
+});
+
+router.get("/_matrix/client/versions", (req, res) => {
+    res.json({
+        versions: [
+            "v1.4"
+        ]
+    });
+});
+
+router.get("/_matrix/client/r0/login", (req, res) => {
+    res.json({
+        flows: [
+            {
+                type: "m.login.password"
+            }
+        ]
+    });
+});
+
+router.post("/_matrix/client/r0/register", (req, res) => {
+    res.status(401).json({
+        errcode: "M_FORBIDDEN",
+        error: "Registration is not implemented"
+    });
+});
+
+router.post(
+    "/_matrix/client/r0/login",
+    async (req, res) => {
+        if (req.body.type !== "m.login.password") {
+            return res.status(403).json({
+                errcode: "M_FORBIDDEN",
+                error: "expected type to be 'm.login.password'"
+            });
+        }
+
+        if (typeof req.body.identifier !== "object" || req.body.identifier.type !== "m.id.user" || typeof req.body.identifier.user !== "string") {
+            return res.status(403).json({
+                errcode: "M_FORBIDDEN",
+                error: "Bad identifier"
+            });
+        }
+
+        if (req.body.identifier.user.length < 3 || req.body.identifier.user.length > 32) {
+            return res.status(403).json({
+                errcode: "M_FORBIDDEN",
+                error: "Bad username - expected string between 3 and 32 characters"
+            });
+        }
+
+        if (typeof req.body.password !== "string" || req.body.password.length > 1000 || req.body.password.length < 8) {
+            return res.status(403).json({
+                errcode: "M_FORBIDDEN",
+                error: "Bad password - expected string between 8 and 1000 characters"
+            });
+        }
+
+        const username = req.body.identifier.user;
+        const password = req.body.password;
+
+        const token = await loginAttempt(username, password);
+        if (!token) {
+            return res.status(403).json({
+                errcode: "M_FORBIDDEN",
+                error: "Invalid credentials"
+            });
+        }
+
+        return res.status(200).send({
+            access_token: token,
+            device_id: matrixDeviceId,
+            // FIXME: expires_in_ms
+            user_id: usernameToMatrix(username)
+        });
+    }
+);
+
+router.get(
+    "/_matrix/client/r0/pushrules",
+    authenticateRoute(),
+    (req, res) => {
+        res.json({global: {}});
+    }
+);
+
+router.post(
+    "/_matrix/client/r0/user/:userId/filter",
+    authenticateRoute(),
+    (req, res) => {
+        res.json({filter_id: "-1"});
+    }
+);
+
+router.get(
+    "/_matrix/client/r0/user/:userId/filter/:filterId",
+    authenticateRoute(),
+    (req, res) => {
+        res.json({});
+    }
+);
+
+router.put(
+    "/_matrix/client/r0/rooms/:roomId/send/:eventType/:txnId",
+    authenticateRoute(),
+    async (req, res) => {
+        const channelId = roomToChannelId(req.params.roomId);
+        if (channelId === null) {
+            return res.status(400).json({
+                errcode: "M_BAD_JSON",
+                error: "Bad room id"
+            });
+        }
+
+        const eventType = req.params.eventType;
+        if (typeof eventType !== "string") {
+            return res.status(400).json({
+                errcode: "M_BAD_JSON",
+                error: "Bad event type"
+            });
+        }
+
+        if (eventType === "m.room.message") {
+            if (req.body.msgtype !== "m.text") {
+                return res.status(400).json({
+                    errcode: "M_BAD_JSON",
+                    error: "msgtype can only be 'm.text'"
+                });
+            }
+            if (typeof req.body.body !== "string" || req.body.body.length < 1 || req.body.body.length > 2000) {
+                return res.status(400).json({
+                    errcode: "M_BAD_JSON",
+                    error: "Message body must be a string between 1 and 2000 characters"
+                });
+            }
+            const message = await sendMessage(req.user, channelId, null, req.body.body);
+            if (!message) {
+                return res.status(500).json({
+                    errcode: "M_UNKNOWN",
+                    error: "Failed to send message"
+                });
+            }
+
+            res.status(200).json({
+                event_id: inventRoomEventId(message.id, "message")
+            });
+        } else {
+            res.status(400).json({
+                errcode: "M_BAD_JSON",
+                error: "Unsupported event type"
+            });
+        }
+    }
+);
+
+router.get(
+    "/_matrix/client/r0/sync",
+    authenticateRoute(),
+    async (req, res) => {
+        let timeout = 0;
+        let since: string | null = null;
+        let isInitial = true;
+        if (typeof req.query.timeout === "string") {
+            timeout = parseInt(req.query.timeout);
+            if (!timeout || isNaN(timeout) || timeout < 5 || timeout > 60000) {
+                timeout = 0;
+            }
+        }
+        if (typeof req.query.since === "string") {
+            since = req.query.since;
+        }
+        if (since) {
+            isInitial = false;
+        }
+
+        await withClient((client: PoolClient) => {
+            return new Promise(async (resolve, reject) => {
+                const channelsResult = await client.query("SELECT id, name, owner_id FROM channels");
+                if (!channelsResult) return;
+                const channels = channelsResult.rows || [];    
+
+                const sendPayload = async () => {
+                    const cursors: MatrixSyncCursors = {};
+                    if (since) {
+                        const sinceParts = since.split(";");
+                        if (sinceParts.length < 100) {
+                            sinceParts.forEach((part) => {
+                                const def = part.split(":");
+                                if (def.length !== 2) return;
+                                const channelId = parseInt(def[0]);
+                                const page = parseInt(def[1]);
+                                if (!isNaN(channelId) && isFinite(channelId) && !isNaN(page) && isFinite(page)) {
+                                    cursors[channelId] = page;
+                                }
+                            });
+                        }
+                    }
+            
+                    res.json(await buildSyncPayload({
+                        id: 3,
+                        username: "test",
+                        is_superuser: true
+                    }, cursors, !isInitial, client, channels));
+                };
+        
+                if (timeout) {
+                    let dispatchChannels = ["*"];
+                    channels.forEach(channel => dispatchChannels.push(`channel:${channel.id}`));
+                    await waitForEvent(dispatchChannels, timeout);
+                }
+                await sendPayload();
+                resolve(true);
+            });
+        });
+    }
+);
+
+router.get(
+    "/_matrix/client/r0/devices",
+    authenticateRoute(),
+    (req, res) => {
+        res.json({
+            devices: [
+                {
+                    device_id: matrixDeviceId,
+                    display_name: "Waffle Generic Matrix Device",
+                    last_seen_ip: "0.0.0.0",
+                    last_seen_ts: 0
+                }
+            ]
+        });
+    }
+);
+
+router.post(
+    "/_matrix/client/r0/keys/query",
+    authenticateRoute(),
+    (req, res) => {
+        res.json({
+            device_keys: {},
+            fallback_keys: {},
+            one_time_keys: {}
+        });
+    }
+);
+
+router.post(
+    "/_matrix/client/r0/keys/upload",
+    authenticateRoute(),
+    (req, res) => {
+        res.json({
+            one_time_key_counts: {signed_curve25519:2000}
+        });
+    }
+);
+
+router.get(
+    "/_matrix/client/r0/profile/:userId",
+    authenticateRoute(),
+    (req, res) => {
+        res.json({
+            displayname: req.user.username
+        });
+    }
+);
+
+export default router;

src/server.ts

@@ -2,6 +2,7 @@ import express, { Application, ErrorRequestHandler, json } from "express";
 import usersRouter from "./routes/api/v1/users";
 import channelsRouter from "./routes/api/v1/channels";
 import messagesRouter from "./routes/api/v1/messages";
+import matrixRouter from "./routes/matrix";
 import { errors } from "./errors";
 
 export default function(app: Application) {
@@ -10,6 +11,7 @@ export default function(app: Application) {
     app.use("/api/v1/channels", channelsRouter);
     app.use("/api/v1/messages", messagesRouter);
     app.use("/", express.static("frontend/public"));
+    app.use("/", matrixRouter);
 
     const errorHandler: ErrorRequestHandler = (error, req, res, next) => {
         console.error("error: while handling request", error);

src/types/channel.d.ts

@@ -1,5 +1,5 @@
 interface Channel {
     id: number,
-    name: number,
+    name: string,
     owner_id: number
 }