Merge pull request #11408 from annando/notices

[friendica.git] / src / Protocol / ActivityPub / Transmitter.php

diff --git a/src/Protocol/ActivityPub/Transmitter.php b/src/Protocol/ActivityPub/Transmitter.php
index 2cab827bb1afd937468687e1e542c0bf9988f897..a39a4c502a6c453834119e04e2cbb95c4f830146 100644 (file)
--- a/src/Protocol/ActivityPub/Transmitter.php
+++ b/src/Protocol/ActivityPub/Transmitter.php
@@ -288,6 +288,69 @@ class Transmitter
                return $data;
        }
 
+       /**
+        * Public posts for the given owner
+        *
+        * @param array   $owner Owner array
+        * @param integer $page  Page number
+        *
+        * @return array of posts
+        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+        * @throws \ImagickException
+        */
+       public static function getFeatured($owner, $page = null)
+       {
+               $condition = ["`uri-id` IN (SELECT `uri-id` FROM `collection-view` WHERE `cid` = ? AND `type` = ?)",
+                       Contact::getIdForURL($owner['url'], 0, false), Post\Collection::FEATURED];
+
+               $condition = DBA::mergeConditions($condition,
+                       ['uid'           => $owner['uid'],
+                       'author-id'      => Contact::getIdForURL($owner['url'], 0, false),
+                       'private'        => [Item::PUBLIC, Item::UNLISTED],
+                       'gravity'        => [GRAVITY_PARENT, GRAVITY_COMMENT],
+                       'network'        => Protocol::FEDERATED,
+                       'parent-network' => Protocol::FEDERATED,
+                       'origin'         => true,
+                       'deleted'        => false,
+                       'visible'        => true]);
+
+               $count = Post::count($condition);
+
+               $data = ['@context' => ActivityPub::CONTEXT];
+               $data['id'] = DI::baseUrl() . '/featured/' . $owner['nickname'];
+               $data['type'] = 'OrderedCollection';
+               $data['totalItems'] = $count;
+
+               if (empty($page)) {
+                       $data['first'] = DI::baseUrl() . '/featured/' . $owner['nickname'] . '?page=1';
+               } else {
+                       $data['type'] = 'OrderedCollectionPage';
+                       $list = [];
+
+                       $items = Post::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]);
+                       while ($item = Post::fetch($items)) {
+                               $activity = self::createActivityFromItem($item['id'], true);
+                               $activity['type'] = $activity['type'] == 'Update' ? 'Create' : $activity['type'];
+
+                               // Only list "Create" activity objects here, no reshares
+                               if (!empty($activity['object']) && ($activity['type'] == 'Create')) {
+                                       $list[] = $activity['object'];
+                               }
+                       }
+                       DBA::close($items);
+
+                       if (!empty($list)) {
+                               $data['next'] = DI::baseUrl() . '/featured/' . $owner['nickname'] . '?page=' . ($page + 1);
+                       }
+
+                       $data['partOf'] = DI::baseUrl() . '/featured/' . $owner['nickname'];
+
+                       $data['orderedItems'] = $list;
+               }
+
+               return $data;
+       }
+
        /**
         * Return the service array containing information the used software and it's url
         *
@@ -328,8 +391,9 @@ class Transmitter
                if ($uid != 0) {
                        $data['following'] = DI::baseUrl() . '/following/' . $owner['nick'];
                        $data['followers'] = DI::baseUrl() . '/followers/' . $owner['nick'];
-                       $data['inbox'] = DI::baseUrl() . '/inbox/' . $owner['nick'];
-                       $data['outbox'] = DI::baseUrl() . '/outbox/' . $owner['nick'];
+                       $data['inbox']     = DI::baseUrl() . '/inbox/' . $owner['nick'];
+                       $data['outbox']    = DI::baseUrl() . '/outbox/' . $owner['nick'];
+                       $data['featured']  = DI::baseUrl() . '/featured/' . $owner['nick'];
                } else {
                        $data['inbox'] = DI::baseUrl() . '/friendica/inbox';
                }
@@ -1467,10 +1531,28 @@ class Transmitter
                        return [];
                }
 
+               // We are treating posts differently when they are directed to a community.
+               // This is done to better support Lemmy. Most of the changes should work with other systems as well.
+               // But to not risk compatibility issues we currently perform the changes only for communities.
+               if ($item['gravity'] == GRAVITY_PARENT) {
+                       $isCommunityPost = !empty(Tag::getByURIId($item['uri-id'], [Tag::EXCLUSIVE_MENTION]));
+                       $links = Post\Media::getByURIId($item['uri-id'], [Post\Media::HTML]);
+                       if ($isCommunityPost && (count($links) == 1)) {
+                               $link = $links[0]['url'];
+                       }
+               } else {
+                       $isCommunityPost = false;
+               }
+
                if ($item['event-type'] == 'event') {
                        $type = 'Event';
                } elseif (!empty($item['title'])) {
-                       $type = 'Article';
+                       if (!$isCommunityPost || empty($link)) {
+                               $type = 'Article';
+                       } else {
+                               // "Page" is used by Lemmy for posts that contain an external link
+                               $type = 'Page';
+                       }
                } else {
                        $type = 'Note';
                }
@@ -1502,7 +1584,7 @@ class Transmitter
                        $data['updated'] = DateTimeFormat::utc($item['edited'] . '+00:00', DateTimeFormat::ATOM);
                }
 
-               $data['url'] = $item['plink'];
+               $data['url'] = $link ?? $item['plink'];
                $data['attributedTo'] = $item['author-link'];
                $data['sensitive'] = self::isSensitive($item['uri-id']);
                $data['context'] = self::fetchContextURLForItem($item);
@@ -1539,6 +1621,19 @@ class Transmitter
                if ($type == 'Event') {
                        $data = array_merge($data, self::createEvent($item));
                } else {
+                       if ($isCommunityPost) {
+                               // For community posts we remove the visible "!user@domain.tld".
+                               // This improves the look at systems like Lemmy.
+                               // Also in the future we should control the community delivery via other methods.
+                               $body = preg_replace("/!\[url\=[^\[\]]*\][^\[\]]*\[\/url\]/ism", '', $body);
+                       }
+
+                       if ($type == 'Page') {
+                               // When we transmit "Page" posts we have to remove the attachment.
+                               // The attachment contains the link that we already transmit in the "url" field.
+                               $body = preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", '', $body);
+                       }
+
                        $body = BBCode::setMentionsToNicknames($body);
 
                        $data['content'] = BBCode::convertForUriId($item['uri-id'], $body, BBCode::ACTIVITYPUB);