KI-AGENT: LiveKit-Calls nativ in FEDEO integrieren

backend/src/modules/matrix.service.ts

@@ -5,6 +5,7 @@ import { FastifyInstance } from "fastify"
 import { authProfiles, authTenantUsers, authUsers, communicationRooms, tenants } from "../../db/schema"
 import { and, eq } from "drizzle-orm"
 import { secrets } from "../utils/secrets"
+import jwt from "jsonwebtoken"
 
 type MatrixErrorResponse = {
     errcode?: string
@@ -40,6 +41,13 @@ type MatrixLoginTokenResponse = {
     expires_in_ms: number
 }
 
+type LiveKitGrant = {
+    roomJoin: boolean
+    room: string
+    canPublish: boolean
+    canSubscribe: boolean
+}
+
 type MatrixTenantRoomOptions = {
     key?: string
     name?: string
@@ -153,6 +161,16 @@ export function matrixService(server: FastifyInstance) {
             ? `wss://${rtcHost()}/livekit/sfu`
             : `ws://localhost:${process.env.MATRIX_DEV_LIVEKIT_PORT || "7880"}`)
 
+    const livekitKey = () =>
+        process.env.LIVEKIT_KEY ||
+        secrets.LIVEKIT_KEY ||
+        (process.env.NODE_ENV === "production" ? "" : "devkey")
+
+    const livekitSecret = () =>
+        process.env.LIVEKIT_SECRET ||
+        secrets.LIVEKIT_SECRET ||
+        (process.env.NODE_ENV === "production" ? "" : "devsecret-local-matrix-stack-32-chars")
+
     const serviceUserLocalpart = () =>
         process.env.MATRIX_SERVICE_USER_LOCALPART ||
         secrets.MATRIX_SERVICE_USER_LOCALPART ||
@@ -1185,6 +1203,62 @@ export function matrixService(server: FastifyInstance) {
         }
     }
 
+    const createLiveKitRoomSession = async (
+        userId: string,
+        tenantId: number | null,
+        options: MatrixTenantRoomOptions = {}
+    ) => {
+        if (!livekitKey() || !livekitSecret()) {
+            throw Object.assign(
+                new Error("LIVEKIT_KEY and LIVEKIT_SECRET are not configured"),
+                { statusCode: 503 }
+            )
+        }
+
+        const room = await provisionTenantRoom(userId, tenantId, options)
+        const session = await ensureCurrentUserJoinedRoom(userId, tenantId, {
+            roomId: room.roomId,
+            alias: room.alias,
+        })
+        const displayName = await getCurrentUserDisplayName(userId, tenantId)
+        const liveKitRoomName = `fedeo-${tenantId || "global"}-${room.key}`.replace(/[^a-zA-Z0-9_-]/g, "_")
+        const now = Math.floor(Date.now() / 1000)
+        const expiresInSeconds = 60 * 60
+        const video: LiveKitGrant = {
+            roomJoin: true,
+            room: liveKitRoomName,
+            canPublish: true,
+            canSubscribe: true,
+        }
+        const token = jwt.sign(
+            {
+                sub: session.matrixUserId,
+                name: displayName,
+                video,
+                nbf: now - 10,
+                exp: now + expiresInSeconds,
+            },
+            livekitSecret(),
+            {
+                algorithm: "HS256",
+                issuer: livekitKey(),
+            }
+        )
+
+        return {
+            roomId: room.roomId,
+            alias: room.alias,
+            key: room.key,
+            name: room.name,
+            matrixUserId: session.matrixUserId,
+            displayName,
+            liveKitUrl: livekitUrl(),
+            liveKitRoomName,
+            liveKitToken: token,
+            expiresInMs: expiresInSeconds * 1000,
+        }
+    }
+
     const listTenantCommunicationUsers = async (tenantId: number | null) => {
         const tenant = await getCurrentTenant(tenantId)
         const rows = await server.db
@@ -1342,6 +1416,7 @@ export function matrixService(server: FastifyInstance) {
         getTenantRoomMembers,
         sendTenantRoomMessage,
         createElementRoomSession,
+        createLiveKitRoomSession,
         syncTenantRoomMembers,
         getGeneralRoomMessages,
         getGeneralRoomMembers,