fix: timeout on spa manifest requests

The previous behaviour had a loop of requests between the front
app and the api when querying the pwa manifest.

This reduce the coupling around the pwa manifest file between the api
and the front app, by uplicating the files so each "service" has a copy
of it, while keeping them in sync and having the front pwa manifest as
single source of truth.

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2291>

.pre-commit-config.yaml

@@ -62,3 +62,13 @@ repos:
     rev: v0.8.0.4
     hooks:
       - id: shellcheck
+
+  - repo: local
+    hooks:
+      - id: pwa-manifest.json
+        name: pwa-manifest.json
+        description: Sync pwa-manifest.json
+        entry: scripts/sync-pwa-manifest.sh
+        pass_filenames: false
+        language: script
+        files: pwa-manifest.json$

api/funkwhale_api/instance/pwa-manifest.json

@@ -0,0 +1,48 @@
+{
+  "name": "Funkwhale",
+  "categories": ["music", "entertainment"],
+  "short_name": "Funkwhale",
+  "description": "Your free and federated audio platform",
+  "icons": [
+    {
+      "src": "android-chrome-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "android-chrome-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ],
+  "prefer_related_applications": true,
+  "related_applications": [
+    {
+      "platform": "play",
+      "url": "https://play.google.com/store/apps/details?id=audio.funkwhale.ffa",
+      "id": "audio.funkwhale.ffa"
+    },
+    {
+      "platform": "f-droid",
+      "url": "https://f-droid.org/en/packages/audio.funkwhale.ffa/",
+      "id": "audio.funkwhale.ffa"
+    }
+  ],
+  "shortcuts": [
+    {
+      "name": "Search",
+      "url": "/search",
+      "icons": []
+    },
+    {
+      "name": "Library",
+      "url": "/library",
+      "icons": []
+    },
+    {
+      "name": "Channels",
+      "url": "/subscriptions",
+      "icons": []
+    }
+  ]
+}

api/funkwhale_api/instance/views.py

@@ -1,8 +1,8 @@
 import json
 import logging
+from pathlib import Path
 
 from cache_memoize import cache_memoize
-from django.conf import settings
 from django.urls import reverse
 from django.utils.decorators import method_decorator
 from django.views.decorators.csrf import ensure_csrf_cookie
@@ -14,7 +14,7 @@ from rest_framework import generics, views
 from rest_framework.response import Response
 
 from funkwhale_api import __version__ as funkwhale_version
-from funkwhale_api.common import middleware, preferences
+from funkwhale_api.common import preferences
 from funkwhale_api.common.renderers import ActivityStreamRenderer
 from funkwhale_api.federation.actors import get_service_actor
 from funkwhale_api.federation.models import Domain
@@ -118,6 +118,10 @@ class NodeInfo(views.APIView):
         )
 
 
+PWA_MANIFEST_PATH = Path(__file__).parent / "pwa-manifest.json"
+PWA_MANIFEST: dict = json.loads(PWA_MANIFEST_PATH.read_text(encoding="utf-8"))
+
+
 class SpaManifest(generics.GenericAPIView):
     permission_classes = []
     authentication_classes = []
@@ -126,18 +130,15 @@ class SpaManifest(generics.GenericAPIView):
 
     @extend_schema(operation_id="get_spa_manifest")
     def get(self, request):
-        existing_manifest = middleware.get_spa_file(
+        manifest = PWA_MANIFEST.copy()
-            settings.FUNKWHALE_SPA_HTML_ROOT, "manifest.json"
-        )
-        parsed_manifest = json.loads(existing_manifest)
         instance_name = preferences.get("instance__name")
         if instance_name:
-            parsed_manifest["short_name"] = instance_name
+            manifest["short_name"] = instance_name
-            parsed_manifest["name"] = instance_name
+            manifest["name"] = instance_name
         instance_description = preferences.get("instance__short_description")
         if instance_description:
-            parsed_manifest["description"] = instance_description
+            manifest["description"] = instance_description
-        serializer = self.get_serializer(parsed_manifest)
+        serializer = self.get_serializer(manifest)
         return Response(
             serializer.data, status=200, content_type="application/manifest+json"
         )

api/pyproject.toml

@@ -14,9 +14,10 @@ packages = [
     { include = "config" },
 ]
 include = [
-    { path = "*.txt" },
-    { path = "*.png" },
   { path = "*.html" },
+  { path = "*.json" },
+  { path = "*.png" },
+  { path = "*.txt" },
 ]
 exclude = ["tests"]
 

api/tests/instance/test_views.py

@@ -1,4 +1,4 @@
-import json
+from unittest import mock
 
 from django.urls import reverse
 
@@ -38,18 +38,19 @@ def test_admin_settings_correct_permission(db, logged_in_api_client, preferences
     assert len(response.data) == len(preferences.all())
 
 
-def test_manifest_endpoint(api_client, mocker, preferences, tmp_path, settings):
+def test_manifest_endpoint(api_client, preferences):
-    settings.FUNKWHALE_SPA_HTML_ROOT = str(tmp_path / "index.html")
+    with mock.patch(
+        "funkwhale_api.instance.views.PWA_MANIFEST",
+        {"lang": "unchanged"},
+    ):
         preferences["instance__name"] = "Test pod"
         preferences["instance__short_description"] = "Test description"
-    base_payload = {}
-    manifest = tmp_path / "manifest.json"
         expected = {
+            "lang": "unchanged",
             "name": "Test pod",
             "short_name": "Test pod",
             "description": "Test description",
         }
-    manifest.write_bytes(json.dumps(base_payload).encode())
 
         url = reverse("api:v1:instance:spa-manifest")
         response = api_client.get(url)

changes/changelog.d/2006.bugfix

@@ -0,0 +1 @@
+Fix timeout on spa manifest requests

front/pwa-manifest.json

@@ -0,0 +1,48 @@
+{
+  "name": "Funkwhale",
+  "categories": ["music", "entertainment"],
+  "short_name": "Funkwhale",
+  "description": "Your free and federated audio platform",
+  "icons": [
+    {
+      "src": "android-chrome-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "android-chrome-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ],
+  "prefer_related_applications": true,
+  "related_applications": [
+    {
+      "platform": "play",
+      "url": "https://play.google.com/store/apps/details?id=audio.funkwhale.ffa",
+      "id": "audio.funkwhale.ffa"
+    },
+    {
+      "platform": "f-droid",
+      "url": "https://f-droid.org/en/packages/audio.funkwhale.ffa/",
+      "id": "audio.funkwhale.ffa"
+    }
+  ],
+  "shortcuts": [
+    {
+      "name": "Search",
+      "url": "/search",
+      "icons": []
+    },
+    {
+      "name": "Library",
+      "url": "/library",
+      "icons": []
+    },
+    {
+      "name": "Channels",
+      "url": "/subscriptions",
+      "icons": []
+    }
+  ]
+}

front/vite.config.ts

@@ -5,6 +5,8 @@ import VueI18n from '@intlify/vite-plugin-vue-i18n'
 import { VitePWA } from 'vite-plugin-pwa'
 import { resolve } from 'path'
 
+import manifest from './pwa-manifest.json'
+
 const port = +(process.env.VUE_PORT ?? 8080)
 
 // https://vitejs.dev/config/
@@ -35,56 +37,7 @@ export default defineConfig(({ mode }) => ({
         type: 'module',
         navigateFallback: 'index.html'
       },
-      manifest: {
+      manifest
-        name: 'Funkwhale',
-        categories: ['music', 'entertainment'],
-        start_url: undefined,
-        scope: undefined,
-        short_name: 'Funkwhale',
-        description: 'Your free and federated audio platform',
-        icons: [
-          {
-            src: 'android-chrome-192x192.png',
-            sizes: '192x192',
-            type: 'image/png'
-          },
-          {
-            src: 'android-chrome-512x512.png',
-            sizes: '512x512',
-            type: 'image/png'
-          }
-        ],
-        prefer_related_applications: true,
-        related_applications: [
-          {
-            platform: 'play',
-            url: 'https://play.google.com/store/apps/details?id=audio.funkwhale.ffa',
-            id: 'audio.funkwhale.ffa'
-          },
-          {
-            platform: 'f-droid',
-            url: 'https://f-droid.org/en/packages/audio.funkwhale.ffa/',
-            id: 'audio.funkwhale.ffa'
-          }
-        ],
-        shortcuts: [
-          {
-            name: 'Search',
-            url: '/search',
-            icons: []
-          },
-          {
-            name: 'Library',
-            url: '/library',
-            icons: []
-          },
-          {
-            name: 'Channels',
-            url: '/subscriptions',
-            icons: []
-          }
-        ]
-      }
     })
   ],
   server: {

scripts/sync-pwa-manifest.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+set -eu
+
+SRC="front/pwa-manifest.json"
+DEST="api/funkwhale_api/instance/pwa-manifest.json"
+
+cp "$SRC" "$DEST"