From dd7e3a7c442b28715c704db636f517d3c571dfb0 Mon Sep 17 00:00:00 2001
From: lebaudantoine <lebaud.antoine131@gmail.com>
Date: Sat, 4 Jan 2025 14:12:45 +0100
Subject: [PATCH] wip generate a random passphrase cached by slug

---
 src/backend/core/api/serializers.py               |  5 ++---
 src/backend/core/utils.py                         | 15 +++++++++++++++
 src/frontend/src/features/rooms/api/ApiRoom.ts    |  2 +-
 .../src/features/rooms/components/Conference.tsx  |  2 +-
 4 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/backend/core/api/serializers.py b/src/backend/core/api/serializers.py
index ff083858..dff9ee8a 100644
--- a/src/backend/core/api/serializers.py
+++ b/src/backend/core/api/serializers.py
@@ -139,12 +139,11 @@ class RoomSerializer(serializers.ModelSerializer):
                 "token": utils.generate_token(
                     room=slug, user=request.user, username=username
                 ),
+                "passphrase": utils.get_cached_passphrase(slug)
             }
-
+            
         output["is_administrable"] = is_admin
 
-        output['passphrase'] = "thisisapassphrase"
-
         return output
 
 
diff --git a/src/backend/core/utils.py b/src/backend/core/utils.py
index 304b5de7..7ecfa44b 100644
--- a/src/backend/core/utils.py
+++ b/src/backend/core/utils.py
@@ -14,6 +14,21 @@ from django.conf import settings
 
 from livekit.api import AccessToken, VideoGrants
 
+from functools import lru_cache
+import secrets
+import string
+
+
+def generate_random_passphrase(length=26):
+    """Generate a random passphrase using letters and digits"""
+    alphabet = string.ascii_letters + string.digits
+    return ''.join(secrets.choice(alphabet) for _ in range(length))
+
+@lru_cache()
+def get_cached_passphrase(room_slug):
+    """Get or generate a cached passphrase for a room slug"""
+    return generate_random_passphrase()
+
 
 def generate_color(identity: str) -> str:
     """Generates a consistent HSL color based on a given identity string.
diff --git a/src/frontend/src/features/rooms/api/ApiRoom.ts b/src/frontend/src/features/rooms/api/ApiRoom.ts
index 3c7e2536..4c2652e2 100644
--- a/src/frontend/src/features/rooms/api/ApiRoom.ts
+++ b/src/frontend/src/features/rooms/api/ApiRoom.ts
@@ -4,11 +4,11 @@ export type ApiRoom = {
   slug: string
   is_public: boolean
   is_administrable: boolean
-  passphrase: string
   livekit?: {
     url: string
     room: string
     token: string
+    passphrase: string
   }
   configuration?: {
     [key: string]: string | number | boolean
diff --git a/src/frontend/src/features/rooms/components/Conference.tsx b/src/frontend/src/features/rooms/components/Conference.tsx
index b5a2b43f..854b6bd5 100644
--- a/src/frontend/src/features/rooms/components/Conference.tsx
+++ b/src/frontend/src/features/rooms/components/Conference.tsx
@@ -110,7 +110,7 @@ export const Conference = ({
     }
     if (e2eeEnabled) {
       keyProvider
-        .setKey(data.passphrase)
+        .setKey(data.livekit?.passphrase)
         .then(() => {
           room.setE2EEEnabled(true).catch((e) => {
             if (e instanceof DeviceUnsupportedError) {