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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://buddypress.trac.wordpress.org/changeset/13339">13339</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://buddypress.trac.wordpress.org/changeset/13339","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>imath</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-10-11 19:10:58 +0000 (Tue, 11 Oct 2022)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>BP Messages: make sure Threads unread count is consistent

<a href="http://buddypress.trac.wordpress.org/changeset/13102">[13102]</a> introduced a regression considering the way we used to set a thread's unread count. This count is set using the list of recipient objects (which include an `unread_count` property for each user object) by checking for the requested user ID into this list to find the corresponding unread count.

Slicing this list into smaller parts to paginate recipients results introduced potential cases where the requested user ID wasn't found into this paginated list of recipients.

Before doing the slice operation, we need to set the requested user ID thread's unread count to be sure it's the right one and not a `null` value.

Props sjregan

Closes https://github.com/buddypress/buddypress/pull/26
See <a href="http://buddypress.trac.wordpress.org/ticket/8750">#8750</a> (trunk)</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcbpmessagesclassesclassbpmessagesthreadphp">trunk/src/bp-messages/classes/class-bp-messages-thread.php</a></li>
<li><a href="#trunktestsphpunittestcasesmessagestemplatephp">trunk/tests/phpunit/testcases/messages/template.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcbpmessagesclassesclassbpmessagesthreadphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-messages/classes/class-bp-messages-thread.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-messages/classes/class-bp-messages-thread.php        2022-10-06 23:12:28 UTC (rev 13338)
+++ trunk/src/bp-messages/classes/class-bp-messages-thread.php  2022-10-11 19:10:58 UTC (rev 13339)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -200,14 +200,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $this->sender_ids[ $message->sender_id ] = $message->sender_id;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // Fetch the recipients.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         // Fetch the recipients and set the displayed/logged in user's unread count.
</ins><span class="cx" style="display: block; padding: 0 10px">                 $this->recipients = $this->get_recipients( $thread_id, $r );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // Get the unread count for the user.
-               if ( isset( $this->recipients[ $r['user_id'] ] ) ) {
-                       $this->unread_count = $this->recipients[ $r['user_id'] ]->unread_count;
-               }
-
</del><span class="cx" style="display: block; padding: 0 10px">                 // Grab all message meta.
</span><span class="cx" style="display: block; padding: 0 10px">                if ( true === (bool) $r['update_meta_cache'] ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        bp_messages_update_meta_cache( wp_list_pluck( $this->messages, 'id' ) );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -311,10 +306,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        wp_cache_set( 'thread_recipients_' . $thread_id, (array) $recipients, 'bp_messages' );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // Set the unread count for the user.
+               if ( isset( $r['user_id'] ) && $r['user_id'] && isset( $recipients[ $r['user_id'] ]->unread_count ) ) {
+                       $this->unread_count = (int) $recipients[ $r['user_id'] ]->unread_count;
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 // Paginate the results.
</span><span class="cx" style="display: block; padding: 0 10px">                if ( ! empty( $recipients ) && $r['recipients_per_page'] && $r['recipients_page'] ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $start      = ( $r['recipients_page'] - 1 ) * ( $r['recipients_per_page'] );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $recipients = array_slice( $recipients, $start, $r['recipients_per_page'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $recipients = array_slice( $recipients, $start, $r['recipients_per_page'], true );
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                /**
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -756,6 +756,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                $thread_id,
</span><span class="cx" style="display: block; padding: 0 10px">                                'ASC',
</span><span class="cx" style="display: block; padding: 0 10px">                                array(
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                        'user_id'             => $r['user_id'],
</ins><span class="cx" style="display: block; padding: 0 10px">                                         'update_meta_cache'   => false,
</span><span class="cx" style="display: block; padding: 0 10px">                                        'recipients_page'     => $r['recipients_page'],
</span><span class="cx" style="display: block; padding: 0 10px">                                        'recipients_per_page' => $r['recipients_per_page'],
</span></span></pre></div>
<a id="trunktestsphpunittestcasesmessagestemplatephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/testcases/messages/template.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/testcases/messages/template.php       2022-10-06 23:12:28 UTC (rev 13338)
+++ trunk/tests/phpunit/testcases/messages/template.php 2022-10-11 19:10:58 UTC (rev 13339)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -424,4 +424,114 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertNotCount( 2, $messages_template->threads[0]->recipients );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertCount( 1, $messages_template->threads[0]->recipients );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+       /**
+        * @group pagination
+        * @group BP_Messages_Box_Template
+        * @group BP8750
+        */
+       public function test_thread_unread_count_setting_per_page_recipients() {
+               $u1 = self::factory()->user->create();
+               $u2 = self::factory()->user->create();
+
+               // create initial thread
+               $message_1 = self::factory()->message->create_and_get(
+                       array(
+                               'sender_id'  => $u1,
+                               'recipients' => array( $u2 ),
+                       )
+               );
+
+               // create some replies to thread
+               self::factory()->message->create_and_get(
+                       array(
+                               'thread_id'  => $message_1->thread_id,
+                               'sender_id'  => $u2,
+                               'recipients' => array( $u1 ),
+                       )
+               );
+
+               self::factory()->message->create_and_get(
+                       array(
+                               'thread_id'  => $message_1->thread_id,
+                               'sender_id'  => $u2,
+                               'recipients' => array( $u1 ),
+                       )
+               );
+
+               // set $u1 as current user.
+               $old_current_user = get_current_user_id();
+               $this->set_current_user( $u1 );
+
+               $messages_template = new BP_Messages_Box_Template(
+                       array(
+                               'recipients_page'     => 1,
+                               'recipients_per_page' => 1,
+                       )
+               );
+
+               $this->set_current_user( $old_current_user );
+
+               $thread = reset( $messages_template->threads );
+
+               $this->assertEquals( 2, $thread->unread_count );
+       }
+
+       /**
+        * @group pagination
+        * @group BP_Messages_Box_Template
+        * @group BP8750
+        */
+       public function test_thread_unread_count_setting_per_page_recipients_with_specific_user_id() {
+               $u1 = self::factory()->user->create();
+               $u2 = self::factory()->user->create();
+               $u3 = self::factory()->user->create();
+
+               // create initial thread
+               $message_1 = self::factory()->message->create_and_get(
+                       array(
+                               'sender_id'  => $u3,
+                               'recipients' => array( $u1, $u2 ),
+                       )
+               );
+
+               // create some replies to thread
+               self::factory()->message->create_and_get(
+                       array(
+                               'thread_id'  => $message_1->thread_id,
+                               'sender_id'  => $u2,
+                               'recipients' => array( $u1, $u3 ),
+                       )
+               );
+
+               self::factory()->message->create_and_get(
+                       array(
+                               'thread_id'  => $message_1->thread_id,
+                               'sender_id'  => $u1,
+                               'recipients' => array( $u2, $u3 ),
+                       )
+               );
+
+               self::factory()->message->create_and_get(
+                       array(
+                               'thread_id'  => $message_1->thread_id,
+                               'sender_id'  => $u3,
+                               'recipients' => array( $u2, $u1 ),
+                       )
+               );
+
+               $messages_template = new BP_Messages_Box_Template(
+                       array(
+                               'user_id'             => $u3,
+                               'recipients_page'     => 1,
+                               'recipients_per_page' => 1,
+                       )
+               );
+
+               $thread = reset( $messages_template->threads );
+
+               $this->assertFalse( isset( $thread->recipients[ $u3 ] ) );
+               $this->assertCount( 1, $thread->recipients );
+               $this->assertEquals( 2, $thread->unread_count );
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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