From daa242a4c5f25f47b5f104ba4cbe2eeb2909d6d3 Mon Sep 17 00:00:00 2001
From: Marcus Eibrink-Lunzenauer <lunzenauer@elan-ev.de>
Date: Wed, 15 Jan 2025 09:18:17 +0000
Subject: Only load a course's blubber threads in a course context.

Closes #4546

Merge request studip/studip!3836
---
 lib/classes/JsonApi/Routes/Blubber/FilterTrait.php |  2 +
 .../JsonApi/Routes/Blubber/ThreadsIndex.php        | 45 ++++++++++------------
 resources/vue/components/blubber/CommunityPage.vue |  8 +++-
 resources/vue/composables/context.js               |  9 +++++
 resources/vue/store/blubber.js                     |  6 ++-
 5 files changed, 44 insertions(+), 26 deletions(-)
 create mode 100644 resources/vue/composables/context.js

diff --git a/lib/classes/JsonApi/Routes/Blubber/FilterTrait.php b/lib/classes/JsonApi/Routes/Blubber/FilterTrait.php
index 2d74f9c..c336016 100644
--- a/lib/classes/JsonApi/Routes/Blubber/FilterTrait.php
+++ b/lib/classes/JsonApi/Routes/Blubber/FilterTrait.php
@@ -30,6 +30,8 @@ trait FilterTrait
         $filters['since'] = isset($filtering['since']) ? self::fromISO8601($filtering['since'])->getTimestamp() : null;
         $filters['before'] = isset($filtering['before']) ? self::fromISO8601($filtering['before'])->getTimestamp() : null;
         $filters['search'] = $filtering['search'] ?? null;
+        $filters['context-type'] = $filtering['context-type'] ?? null;
+        $filters['context-id'] = $filtering['context-id'] ?? null;
 
         return $filters;
     }
diff --git a/lib/classes/JsonApi/Routes/Blubber/ThreadsIndex.php b/lib/classes/JsonApi/Routes/Blubber/ThreadsIndex.php
index 91cfa89..5d4cf33 100644
--- a/lib/classes/JsonApi/Routes/Blubber/ThreadsIndex.php
+++ b/lib/classes/JsonApi/Routes/Blubber/ThreadsIndex.php
@@ -16,7 +16,7 @@ class ThreadsIndex extends JsonApiController
 {
     use TimestampTrait, FilterTrait;
 
-    protected $allowedFilteringParameters = ['since', 'before', 'search'];
+    protected $allowedFilteringParameters = ['since', 'before', 'search', 'context-type', 'context-id'];
     protected $allowedIncludePaths = ['author', 'comments', 'context', 'mentions'];
     protected $allowedPagingParameters = ['offset', 'limit'];
 
@@ -25,34 +25,31 @@ class ThreadsIndex extends JsonApiController
      */
     public function __invoke(Request $request, Response $response, $args)
     {
+        $this->validateFilters();
+        $filters = $this->getFilters();
         $contextType = $args['type'];
+        $contextId = isset($args['id']) ? $args['id'] : null;
+
+        if ($contextType === 'all') {
+            if (isset($filters['context-type'])) {
+                $contextType = $filters['context-type'];
+            }
+            if (isset($filters['context-id'])) {
+                $contextId = $filters['context-id'];
+            }
+        }
+
         if (!in_array($contextType, ['all', 'public', 'private', 'course', 'institute'])) {
             throw new BadRequestException('Wrong context type.');
         }
 
-        switch ($contextType) {
-            case 'all':
-                $this->validateFilters();
-                $filters = $this->getFilters();
-                list($threads, $total) = $this->getAllThreads($filters, $this->getUser($request));
-                break;
-
-            case 'public':
-                list($threads, $total) = $this->getPublicThreads($this->getUser($request));
-                break;
-
-            case 'private':
-                list($threads, $total) = $this->getPrivateThreads($this->getUser($request), $args['id']);
-                break;
-
-            case 'course':
-                list($threads, $total) = $this->getCourseThreads($this->getUser($request), $args['id']);
-                break;
-
-            case 'institute':
-                list($threads, $total) = $this->getInstituteThreads($this->getUser($request), $args['id']);
-                break;
-        }
+        [$threads, $total] = match ($contextType) {
+            'all' => $this->getAllThreads($filters, $this->getUser($request)),
+            'public' => $this->getPublicThreads($this->getUser($request)),
+            'private' => $this->getPrivateThreads($this->getUser($request), $contextId),
+            'course' => $this->getCourseThreads($this->getUser($request), $contextId),
+            'institute' => $this->getInstituteThreads($this->getUser($request), $contextId),
+        };
 
         return $this->getPaginatedContentResponse($threads, $total);
     }
diff --git a/resources/vue/components/blubber/CommunityPage.vue b/resources/vue/components/blubber/CommunityPage.vue
index bd937e0..4dee22a 100644
--- a/resources/vue/components/blubber/CommunityPage.vue
+++ b/resources/vue/components/blubber/CommunityPage.vue
@@ -18,11 +18,17 @@
 
 <script>
 import { mapActions, mapGetters } from 'vuex';
+import { useContext } from '../../composables/context.js';
 import BlubberPanel from './Panel.vue';
 import BlubberSearchWidget from './SearchWidget.vue';
 import BlubberThreadsWidget from './ThreadsWidget.vue';
 
 export default {
+    setup() {
+        const { id, isCourse } = useContext();
+
+        return { cid: id, isCourse };
+    },
     props: {
         initialThreadId: {
             type: String,
@@ -64,7 +70,7 @@ export default {
         },
     },
     async beforeMount() {
-        await this.fetchThreads({ search: this.search });
+        await this.fetchThreads({ search: this.search, course: this.isCourse ? this.cid : null });
         this.onSelectThread(this.initialThreadId, false);
 
         this.handleSelectBlubberThread = (threadId) => {
diff --git a/resources/vue/composables/context.js b/resources/vue/composables/context.js
new file mode 100644
index 0000000..06a50b8
--- /dev/null
+++ b/resources/vue/composables/context.js
@@ -0,0 +1,9 @@
+import { computed } from "vue";
+
+export function useContext() {
+    const id = computed(() => (isCourse.value ? window.STUDIP.URLHelper.parameters.cid : null));
+    const isCourse = computed(() => "cid" in window.STUDIP.URLHelper.parameters);
+    const userId = computed(() => window.STUDIP.USER_ID);
+
+    return { id, isCourse, userId };
+}
diff --git a/resources/vue/store/blubber.js b/resources/vue/store/blubber.js
index 2ae514e..db58333 100644
--- a/resources/vue/store/blubber.js
+++ b/resources/vue/store/blubber.js
@@ -171,7 +171,7 @@ export default {
             });
         },
 
-        async fetchThreads({ commit, dispatch, getters, rootGetters }, { search, more = false }) {
+        async fetchThreads({ commit, dispatch, getters, rootGetters }, { search, course = false, more = false }) {
             if (getters.isLoadingThreads) {
                 return;
             }
@@ -185,6 +185,10 @@ export default {
             if (search) {
                 filter['search'] = search;
             }
+            if (course) {
+                filter['context-type'] = 'course';
+                filter['context-id'] = course;
+            }
             if (more) {
                 const earliestDate = rootGetters['blubber-threads/all'].reduce((earliest, thread) => {
                     const activityDate = new Date(thread.attributes['latest-activity']);
-- 
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