]> git.mxchange.org Git - friendica.git/blobdiff - src/Model/Contact.php
Changes:
[friendica.git] / src / Model / Contact.php
index d80827c93f9e60c61467d284267c1d57ea4630b2..dd130a6416502473d76f23996f43aea920a60cbd 100644 (file)
@@ -21,7 +21,7 @@
 
 namespace Friendica\Model;
 
-use Friendica\App\BaseURL;
+use Friendica\Contact\Avatar;
 use Friendica\Contact\Introduction\Exception\IntroductionNotFoundException;
 use Friendica\Content\Pager;
 use Friendica\Content\Text\HTML;
@@ -35,13 +35,11 @@ use Friendica\Core\Worker;
 use Friendica\Database\Database;
 use Friendica\Database\DBA;
 use Friendica\DI;
+use Friendica\Module\NoScrape;
 use Friendica\Network\HTTPException;
 use Friendica\Network\Probe;
 use Friendica\Protocol\Activity;
 use Friendica\Protocol\ActivityPub;
-use Friendica\Protocol\Diaspora;
-use Friendica\Protocol\OStatus;
-use Friendica\Protocol\Salmon;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Images;
 use Friendica\Util\Network;
@@ -121,7 +119,7 @@ class Contact
         * @return array
         * @throws \Exception
         */
-       public static function selectToArray(array $fields = [], array $condition = [], array $params = [])
+       public static function selectToArray(array $fields = [], array $condition = [], array $params = []): array
        {
                return DBA::selectToArray('contact', $fields, $condition, $params);
        }
@@ -130,7 +128,7 @@ class Contact
         * @param array $fields    Array of selected fields, empty for all
         * @param array $condition Array of fields for condition
         * @param array $params    Array of several parameters
-        * @return array
+        * @return array|bool
         * @throws \Exception
         */
        public static function selectFirst(array $fields = [], array $condition = [], array $params = [])
@@ -150,7 +148,7 @@ class Contact
         * @return int  id of the created contact
         * @throws \Exception
         */
-       public static function insert(array $fields, int $duplicate_mode = Database::INSERT_DEFAULT)
+       public static function insert(array $fields, int $duplicate_mode = Database::INSERT_DEFAULT): int
        {
                if (!empty($fields['baseurl']) && empty($fields['gsid'])) {
                        $fields['gsid'] = GServer::getID($fields['baseurl'], true);
@@ -189,6 +187,7 @@ class Contact
         *
         * @return boolean was the update successfull?
         * @throws \Exception
+        * @todo Let's get rid of boolean type of $old_fields
         */
        public static function update(array $fields, array $condition, $old_fields = [])
        {
@@ -206,7 +205,7 @@ class Contact
         * @return array|boolean Contact record if it exists, false otherwise
         * @throws \Exception
         */
-       public static function getById($id, $fields = [])
+       public static function getById(int $id, array $fields = [])
        {
                return DBA::selectFirst('contact', $fields, ['id' => $id]);
        }
@@ -219,7 +218,7 @@ class Contact
         * @return array|boolean Contact record if it exists, false otherwise
         * @throws \Exception
         */
-       public static function getByUriId($uri_id, $fields = [])
+       public static function getByUriId(int $uri_id, array $fields = [])
        {
                return DBA::selectFirst('contact', $fields, ['uri-id' => $uri_id], ['order' => ['uid']]);
        }
@@ -233,7 +232,7 @@ class Contact
         * @param integer $uid    User ID of the contact
         * @return array contact array
         */
-       public static function getByURL(string $url, $update = null, array $fields = [], int $uid = 0)
+       public static function getByURL(string $url, $update = null, array $fields = [], int $uid = 0): array
        {
                if ($update || is_null($update)) {
                        $cid = self::getIdForURL($url, $uid, $update);
@@ -304,7 +303,7 @@ class Contact
         * @param array   $fields Field list
         * @return array contact array
         */
-       public static function getByURLForUser(string $url, int $uid = 0, $update = false, array $fields = [])
+       public static function getByURLForUser(string $url, int $uid = 0, $update = false, array $fields = []): array
        {
                if ($uid != 0) {
                        $contact = self::getByURL($url, $update, $fields, $uid);
@@ -335,7 +334,7 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function isFollower($cid, $uid)
+       public static function isFollower(int $cid, int $uid): bool
        {
                if (Contact\User::isBlocked($cid, $uid)) {
                        return false;
@@ -360,7 +359,7 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function isFollowerByURL($url, $uid)
+       public static function isFollowerByURL(string $url, uid $uid): bool
        {
                $cid = self::getIdForURL($url, $uid);
 
@@ -372,16 +371,16 @@ class Contact
        }
 
        /**
-        * Tests if the given user follow the given contact
+        * Tests if the given user shares with the given contact
         *
         * @param int $cid Either public contact id or user's contact id
         * @param int $uid User ID
         *
-        * @return boolean is the contact url being followed?
+        * @return boolean is the contact sharing with given user?
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function isSharing($cid, $uid)
+       public static function isSharing(int $cid, int $uid): bool
        {
                if (Contact\User::isBlocked($cid, $uid)) {
                        return false;
@@ -406,7 +405,7 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function isSharingByURL($url, $uid)
+       public static function isSharingByURL(string $url, int $uid): bool
        {
                $cid = self::getIdForURL($url, $uid);
 
@@ -427,7 +426,7 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function getBasepath($url, $dont_update = false)
+       public static function getBasepath(string $url, bool $dont_update = false): string
        {
                $contact = DBA::selectFirst('contact', ['id', 'baseurl'], ['uid' => 0, 'nurl' => Strings::normaliseLink($url)]);
                if (!DBA::isResult($contact)) {
@@ -461,7 +460,7 @@ class Contact
         *
         * @return boolean Is it the same server?
         */
-       public static function isLocal($url)
+       public static function isLocal(string $url): bool
        {
                if (!parse_url($url, PHP_URL_SCHEME)) {
                        $addr_parts = explode('@', $url);
@@ -478,7 +477,7 @@ class Contact
         *
         * @return boolean Is it the same server?
         */
-       public static function isLocalById(int $cid)
+       public static function isLocalById(int $cid): bool
        {
                $contact = DBA::selectFirst('contact', ['url', 'baseurl'], ['id' => $cid]);
                if (!DBA::isResult($contact)) {
@@ -502,7 +501,7 @@ class Contact
         * @return integer|boolean Public contact id for given user id
         * @throws \Exception
         */
-       public static function getPublicIdByUserId($uid)
+       public static function getPublicIdByUserId(int $uid)
        {
                $self = DBA::selectFirst('contact', ['url'], ['self' => true, 'uid' => $uid]);
                if (!DBA::isResult($self)) {
@@ -521,7 +520,7 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function getPublicAndUserContactID($cid, $uid)
+       public static function getPublicAndUserContactID(int $cid, int $uid): array
        {
                // We have to use the legacy function as long as the post update hasn't finished
                if (DI::config()->get('system', 'post_update_version') < 1427) {
@@ -562,7 +561,7 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function legacyGetPublicAndUserContactID($cid, $uid)
+       private static function legacyGetPublicAndUserContactID(int $cid, int $uid): array
        {
                if (empty($uid) || empty($cid)) {
                        return [];
@@ -685,7 +684,7 @@ class Contact
         */
        public static function updateSelfFromUserID($uid, $update_avatar = false)
        {
-               $fields = ['id', 'name', 'nick', 'location', 'about', 'keywords', 'avatar', 'prvkey', 'pubkey', 'manually-approve',
+               $fields = ['id', 'uri-id', 'name', 'nick', 'location', 'about', 'keywords', 'avatar', 'prvkey', 'pubkey', 'manually-approve',
                        'xmpp', 'matrix', 'contact-type', 'forum', 'prv', 'avatar-date', 'url', 'nurl', 'unsearchable',
                        'photo', 'thumb', 'micro', 'header', 'addr', 'request', 'notify', 'poll', 'confirm', 'poco', 'network'];
                $self = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
@@ -717,6 +716,7 @@ class Contact
                // it seems as if ported accounts can have wrong values, so we make sure that now everything is fine.
                $fields['url'] = DI::baseUrl() . '/profile/' . $user['nickname'];
                $fields['nurl'] = Strings::normaliseLink($fields['url']);
+               $fields['uri-id'] = ItemURI::getIdByURI($fields['url']);
                $fields['addr'] = $user['nickname'] . '@' . substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3);
                $fields['request'] = DI::baseUrl() . '/dfrn_request/' . $user['nickname'];
                $fields['notify'] = DI::baseUrl() . '/dfrn_notify/' . $user['nickname'];
@@ -774,10 +774,10 @@ class Contact
                        $fields['updated'] = DateTimeFormat::utcNow();
                        self::update($fields, ['id' => $self['id']]);
 
-                       // Update the public contact as well
-                       $fields['prvkey'] = null;
-                       $fields['self']   = false;
-                       self::update($fields, ['uid' => 0, 'nurl' => $self['nurl']]);
+                       // Update the other contacts as well
+                       unset($fields['prvkey']);
+                       $fields['self'] = false;
+                       self::update($fields, ['uri-id' => $self['uri-id'], 'self' => false]);
 
                        // Update the profile
                        $fields = [
@@ -800,50 +800,61 @@ class Contact
        public static function remove($id)
        {
                // We want just to make sure that we don't delete our "self" contact
-               $contact = DBA::selectFirst('contact', ['uid'], ['id' => $id, 'self' => false]);
+               $contact = DBA::selectFirst('contact', ['uri-id', 'photo', 'thumb', 'micro', 'uid'], ['id' => $id, 'self' => false]);
                if (!DBA::isResult($contact)) {
                        return;
                }
 
+               self::clearFollowerFollowingEndpointCache($contact['uid']);
+
                // Archive the contact
                self::update(['archive' => true, 'network' => Protocol::PHANTOM, 'deleted' => true], ['id' => $id]);
 
+               if (!DBA::exists('contact', ['uri-id' => $contact['uri-id'], 'deleted' => false])) {
+                       Avatar::deleteCache($contact);
+               }
+
                // Delete it in the background
                Worker::add(PRIORITY_MEDIUM, 'Contact\Remove', $id);
        }
 
        /**
-        * Sends an unfriend message. Removes the contact for two-way unfriending or sharing only protocols (feed an mail)
+        * Unfollow the remote contact
         *
-        * @param array   $user    User unfriending
-        * @param array   $contact Contact (uid != 0) unfriended
-        * @param boolean $two_way Revoke eventual inbound follow as well
-        * @return bool|null true if successful, false if not, null if no remote action was performed
+        * @param array $contact Target user-specific contact (uid != 0) array
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function terminateFriendship(array $user, array $contact): ?bool
+       public static function unfollow(array $contact): void
        {
-               $result = Protocol::terminateFriendship($user, $contact);
+               if (empty($contact['network'])) {
+                       throw new \InvalidArgumentException('Empty network in contact array');
+               }
 
-               if ($contact['rel'] == Contact::SHARING || in_array($contact['network'], [Protocol::FEED, Protocol::MAIL])) {
-                       self::remove($contact['id']);
-               } else {
-                       self::update(['rel' => Contact::FOLLOWER], ['id' => $contact['id']]);
+               if (empty($contact['uid'])) {
+                       throw new \InvalidArgumentException('Unexpected public contact record');
                }
 
-               return $result;
+               if (in_array($contact['rel'], [self::SHARING, self::FRIEND])) {
+                       $cdata = self::getPublicAndUserContactID($contact['id'], $contact['uid']);
+                       if (!empty($cdata['public'])) {
+                               Worker::add(PRIORITY_HIGH, 'Contact\Unfollow', $cdata['public'], $contact['uid']);
+                       }
+               }
+
+               self::removeSharer($contact);
        }
 
        /**
         * Revoke follow privileges of the remote user contact
         *
-        * @param array   $contact  Contact unfriended
-        * @return bool|null Whether the remote operation is successful or null if no remote operation was performed
+        * The local relationship is updated immediately, the eventual remote server is messaged in the background.
+        *
+        * @param array $contact User-specific contact array (uid != 0) to revoke the follow from
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function revokeFollow(array $contact): ?bool
+       public static function revokeFollow(array $contact): void
        {
                if (empty($contact['network'])) {
                        throw new \InvalidArgumentException('Empty network in contact array');
@@ -853,21 +864,56 @@ class Contact
                        throw new \InvalidArgumentException('Unexpected public contact record');
                }
 
-               $result = Protocol::revokeFollow($contact);
-
-               // A null value here means the remote network doesn't support explicit follow revocation, we can still
-               // break the locally recorded relationship
-               if ($result !== false) {
-                       if ($contact['rel'] == self::FRIEND) {
-                               self::update(['rel' => self::SHARING], ['id' => $contact['id']]);
-                       } else {
-                               self::remove($contact['id']);
+               if (in_array($contact['rel'], [self::FOLLOWER, self::FRIEND])) {
+                       $cdata = self::getPublicAndUserContactID($contact['id'], $contact['uid']);
+                       if (!empty($cdata['public'])) {
+                               Worker::add(PRIORITY_HIGH, 'Contact\RevokeFollow', $cdata['public'], $contact['uid']);
                        }
                }
 
-               return $result;
+               self::removeFollower($contact);
+       }
+
+       /**
+        * Completely severs a relationship with a contact
+        *
+        * @param array $contact User-specific contact (uid != 0) array
+        * @throws HTTPException\InternalServerErrorException
+        * @throws \ImagickException
+        */
+       public static function terminateFriendship(array $contact)
+       {
+               if (empty($contact['network'])) {
+                       throw new \InvalidArgumentException('Empty network in contact array');
+               }
+
+               if (empty($contact['uid'])) {
+                       throw new \InvalidArgumentException('Unexpected public contact record');
+               }
+
+               $cdata = self::getPublicAndUserContactID($contact['id'], $contact['uid']);
+
+               if (in_array($contact['rel'], [self::SHARING, self::FRIEND]) && !empty($cdata['public'])) {
+                       Worker::add(PRIORITY_HIGH, 'Contact\Unfollow', $cdata['public'], $contact['uid']);
+               }
+
+               if (in_array($contact['rel'], [self::FOLLOWER, self::FRIEND]) && !empty($cdata['public'])) {
+                       Worker::add(PRIORITY_HIGH, 'Contact\RevokeFollow', $cdata['public'], $contact['uid']);
+               }
+
+               self::remove($contact['id']);
        }
 
+       private static function clearFollowerFollowingEndpointCache(int $uid)
+       {
+               if (empty($uid)) {
+                       return;
+               }
+
+               DI::cache()->delete(ActivityPub\Transmitter::CACHEKEY_CONTACTS . 'followers:' . $uid);
+               DI::cache()->delete(ActivityPub\Transmitter::CACHEKEY_CONTACTS . 'following:' . $uid);
+               DI::cache()->delete(NoScrape::CACHEKEY . $uid);
+       }
 
        /**
         * Marks a contact for archival after a communication issue delay
@@ -1433,11 +1479,31 @@ class Contact
                }
 
                if ($thread_mode) {
-                       $items = Post::toArray(Post::selectForUser(local_user(), ['uri-id', 'gravity', 'parent-uri-id', 'thr-parent-id', 'author-id'], $condition, $params));
+                       $fields = ['uri-id', 'thr-parent-id', 'gravity', 'author-id', 'commented'];
+                       $items = Post::toArray(Post::selectForUser(local_user(), $fields, $condition, $params));
+
+                       if ($pager->getStart() == 0) {
+                               $cdata = self::getPublicAndUserContactID($cid, local_user());
+                               if (!empty($cdata['public'])) {
+                                       $pinned = Post\Collection::selectToArrayForContact($cdata['public'], Post\Collection::FEATURED, $fields);
+                                       $items = array_merge($items, $pinned);
+                               }
+                       }
 
-                       $o .= DI::conversation()->create($items, 'contacts', $update, false, 'commented', local_user());
+                       $o .= DI::conversation()->create($items, 'contacts', $update, false, 'pinned_commented', local_user());
                } else {
-                       $items = Post::toArray(Post::selectForUser(local_user(), Item::DISPLAY_FIELDLIST, $condition, $params));
+                       $fields = array_merge(Item::DISPLAY_FIELDLIST, ['featured']);
+                       $items = Post::toArray(Post::selectForUser(local_user(), $fields, $condition, $params));
+
+                       if ($pager->getStart() == 0) {
+                               $cdata = self::getPublicAndUserContactID($cid, local_user());
+                               if (!empty($cdata['public'])) {
+                                       $condition = ["`uri-id` IN (SELECT `uri-id` FROM `collection-view` WHERE `cid` = ? AND `type` = ?)",
+                                               $cdata['public'], Post\Collection::FEATURED];
+                                       $pinned = Post::toArray(Post::selectForUser(local_user(), $fields, $condition, $params));
+                                       $items = array_merge($pinned, $items);
+                               }
+                       }
 
                        $o .= DI::conversation()->create($items, 'contact-posts', $update);
                }
@@ -1461,7 +1527,7 @@ class Contact
         * @param int $type type of contact or account
         * @return string
         */
-       public static function getAccountType(int $type)
+       public static function getAccountType(int $type): string
        {
                switch ($type) {
                        case self::TYPE_ORGANISATION:
@@ -1487,11 +1553,11 @@ class Contact
        /**
         * Blocks a contact
         *
-        * @param int $cid
-        * @return bool
-        * @throws \Exception
+        * @param int $cid Contact id to block
+        * @param string $reason Block reason
+        * @return bool Whether it was successful
         */
-       public static function block($cid, $reason = null)
+       public static function block(int $cid, string $reason = null): bool
        {
                $return = self::update(['blocked' => true, 'block_reason' => $reason], ['id' => $cid]);
 
@@ -1501,11 +1567,10 @@ class Contact
        /**
         * Unblocks a contact
         *
-        * @param int $cid
-        * @return bool
-        * @throws \Exception
+        * @param int $cid Contact id to unblock
+        * @return bool Whether it was successfull
         */
-       public static function unblock($cid)
+       public static function unblock(int $cid): bool
        {
                $return = self::update(['blocked' => false, 'block_reason' => null], ['id' => $cid]);
 
@@ -1515,7 +1580,7 @@ class Contact
        /**
         * Ensure that cached avatar exist
         *
-        * @param integer $cid
+        * @param integer $cid Contact id
         */
        public static function checkAvatarCache(int $cid)
        {
@@ -1524,16 +1589,24 @@ class Contact
                        return;
                }
 
+               if (Network::isLocalLink($contact['url'])) {
+                       return;
+               }
+
                if (in_array($contact['network'], [Protocol::FEED, Protocol::MAIL]) || DI::config()->get('system', 'cache_contact_avatar')) {
                        if (!empty($contact['avatar']) && (empty($contact['photo']) || empty($contact['thumb']) || empty($contact['micro']))) {
                                Logger::info('Adding avatar cache', ['id' => $cid, 'contact' => $contact]);
                                self::updateAvatar($cid, $contact['avatar'], true);
                                return;
                        }
-               } elseif (!empty($contact['photo']) || !empty($contact['thumb']) || !empty($contact['micro'])) {
-                       Logger::info('Removing avatar cache', ['id' => $cid, 'contact' => $contact]);
+               } elseif (Photo::isPhotoURI($contact['photo']) || Photo::isPhotoURI($contact['thumb']) || Photo::isPhotoURI($contact['micro'])) {
+                       Logger::info('Replacing legacy avatar cache', ['id' => $cid, 'contact' => $contact]);
                        self::updateAvatar($cid, $contact['avatar'], true);
                        return;
+               } elseif (DI::config()->get('system', 'avatar_cache') && (empty($contact['photo']) || empty($contact['thumb']) || empty($contact['micro']))) {
+                       Logger::info('Adding avatar cache file', ['id' => $cid, 'contact' => $contact]);
+                       self::updateAvatar($cid, $contact['avatar'], true);
+               return;
                }
        }
 
@@ -1547,9 +1620,30 @@ class Contact
         * @param bool  $no_update Don't perfom an update if no cached avatar was found
         * @return string photo path
         */
-       private static function getAvatarPath(array $contact, string $size, $no_update = false)
+       private static function getAvatarPath(array $contact, string $size, bool $no_update = false): string
        {
                $contact = self::checkAvatarCacheByArray($contact, $no_update);
+
+               if (DI::config()->get('system', 'avatar_cache')) {
+                       switch ($size) {
+                               case Proxy::SIZE_MICRO:
+                                       if (!empty($contact['micro']) && !Photo::isPhotoURI($contact['micro'])) {
+                                               return $contact['micro'];
+                                       }
+                                       break;
+                               case Proxy::SIZE_THUMB:
+                                       if (!empty($contact['thumb']) && !Photo::isPhotoURI($contact['thumb'])) {
+                                               return $contact['thumb'];
+                                       }
+                                       break;
+                               case Proxy::SIZE_SMALL:
+                                       if (!empty($contact['photo']) && !Photo::isPhotoURI($contact['photo'])) {
+                                               return $contact['photo'];
+                                       }
+                                       break;
+                       }
+               }
+
                return self::getAvatarUrlForId($contact['id'], $size, $contact['updated'] ?? '');
        }
 
@@ -1560,7 +1654,7 @@ class Contact
         * @param bool   $no_update Don't perfom an update if no cached avatar was found
         * @return string photo path
         */
-       public static function getPhoto(array $contact, bool $no_update = false)
+       public static function getPhoto(array $contact, bool $no_update = false): string
        {
                return self::getAvatarPath($contact, Proxy::SIZE_SMALL, $no_update);
        }
@@ -1572,7 +1666,7 @@ class Contact
         * @param bool   $no_update Don't perfom an update if no cached avatar was found
         * @return string photo path
         */
-       public static function getThumb(array $contact, bool $no_update = false)
+       public static function getThumb(array $contact, bool $no_update = false): string
        {
                return self::getAvatarPath($contact, Proxy::SIZE_THUMB, $no_update);
        }
@@ -1584,7 +1678,7 @@ class Contact
         * @param bool   $no_update Don't perfom an update if no cached avatar was found
         * @return string photo path
         */
-       public static function getMicro(array $contact, bool $no_update = false)
+       public static function getMicro(array $contact, bool $no_update = false): string
        {
                return self::getAvatarPath($contact, Proxy::SIZE_MICRO, $no_update);
        }
@@ -1596,7 +1690,7 @@ class Contact
         * @param bool  $no_update Don't perfom an update if no cached avatar was found
         * @return array contact array with avatar cache fields
         */
-       private static function checkAvatarCacheByArray(array $contact, bool $no_update = false)
+       private static function checkAvatarCacheByArray(array $contact, bool $no_update = false): array
        {
                $update = false;
                $contact_fields = [];
@@ -1614,7 +1708,9 @@ class Contact
                        return $contact;
                }
 
-               if (!empty($contact['id']) && !empty($contact['avatar'])) {
+               $local = !empty($contact['url']) && Network::isLocalLink($contact['url']);
+
+               if (!$local && !empty($contact['id']) && !empty($contact['avatar'])) {
                        self::updateAvatar($contact['id'], $contact['avatar'], true);
 
                        $new_contact = self::getById($contact['id'], $contact_fields);
@@ -1622,6 +1718,8 @@ class Contact
                                // We only update the cache fields
                                $contact = array_merge($contact, $new_contact);
                        }
+               } elseif ($local && !empty($contact['avatar'])) {
+                       return $contact;
                }
 
                /// add the default avatars if the fields aren't filled
@@ -1680,7 +1778,7 @@ class Contact
                                break;
                        default:
                                /**
-                                * Use a random picture. 
+                                * Use a random picture.
                                 * The service provides random pictures from Unsplash.
                                 * @license https://unsplash.com/license
                                 */
@@ -1698,7 +1796,7 @@ class Contact
         * @param string $size    Size of the avatar picture
         * @return string avatar URL
         */
-       public static function getDefaultAvatar(array $contact, string $size)
+       public static function getDefaultAvatar(array $contact, string $size): string
        {
                switch ($size) {
                        case Proxy::SIZE_MICRO:
@@ -1719,6 +1817,114 @@ class Contact
                }
 
                if (!DI::config()->get('system', 'remote_avatar_lookup')) {
+                       $platform = '';
+                       $type     = Contact::TYPE_PERSON;
+
+                       if (!empty($contact['id'])) {
+                               $account = DBA::selectFirst('account-user-view', ['platform', 'contact-type'], ['id' => $contact['id']]);
+                               $platform = $account['platform'] ?? '';
+                               $type     = $account['contact-type'] ?? Contact::TYPE_PERSON;
+                       }
+
+                       if (empty($platform) && !empty($contact['uri-id'])) {
+                               $account = DBA::selectFirst('account-user-view', ['platform', 'contact-type'], ['uri-id' => $contact['uri-id']]);
+                               $platform = $account['platform'] ?? '';
+                               $type     = $account['contact-type'] ?? Contact::TYPE_PERSON;
+                       }
+
+                       switch ($platform) {
+                               case 'corgidon':
+                                       /**
+                                        * Picture credits
+                                        * @license GNU Affero General Public License v3.0
+                                        * @link    https://github.com/msdos621/corgidon/blob/main/public/avatars/original/missing.png
+                                        */
+                                       $default = '/images/default/corgidon.png';
+                                       break;
+
+                               case 'diaspora':
+                                       /**
+                                        * Picture credits
+                                        * @license GNU Affero General Public License v3.0
+                                        * @link    https://github.com/diaspora/diaspora/
+                                        */
+                                       $default = '/images/default/diaspora.png';
+                                       break;
+
+                               case 'gotosocial':
+                                       /**
+                                        * Picture credits
+                                        * @license GNU Affero General Public License v3.0
+                                        * @link    https://github.com/superseriousbusiness/gotosocial/blob/main/web/assets/default_avatars/GoToSocial_icon1.svg
+                                        */
+                                       $default = '/images/default/gotosocial.svg';
+                                       break;
+
+                               case 'hometown':
+                                       /**
+                                        * Picture credits
+                                        * @license GNU Affero General Public License v3.0
+                                        * @link    https://github.com/hometown-fork/hometown/blob/hometown-dev/public/avatars/original/missing.png
+                                        */
+                                       $default = '/images/default/hometown.png';
+                                       break;
+
+                               case 'koyuspace':
+                                       /**
+                                        * Picture credits
+                                        * @license GNU Affero General Public License v3.0
+                                        * @link    https://github.com/koyuspace/mastodon/blob/main/public/avatars/original/missing.png
+                                        */
+                                       $default = '/images/default/koyuspace.png';
+                                       break;
+
+                               case 'ecko':
+                               case 'qoto':
+                               case 'mastodon':
+                                       /**
+                                        * Picture credits
+                                        * @license GNU Affero General Public License v3.0
+                                        * @link    https://github.com/mastodon/mastodon/tree/main/public/avatars/original/missing.png
+                                        */
+                                       $default = '/images/default/mastodon.png';
+                                       break;
+
+                               case 'peertube':
+                                       if ($type == Contact::TYPE_COMMUNITY) {
+                                               /**
+                                                * Picture credits
+                                                * @license GNU Affero General Public License v3.0
+                                                * @link    https://github.com/Chocobozzz/PeerTube/blob/develop/client/src/assets/images/default-avatar-video-channel.png
+                                                */
+                                               $default = '/images/default/peertube-channel.png';
+                                       } else {
+                                               /**
+                                                * Picture credits
+                                                * @license GNU Affero General Public License v3.0
+                                                * @link    https://github.com/Chocobozzz/PeerTube/blob/develop/client/src/assets/images/default-avatar-account.png
+                                                */
+                                               $default = '/images/default/peertube-account.png';
+                                       }
+                                       break;
+
+                               case 'pleroma':
+                                       /**
+                                        * Picture credits
+                                        * @license GNU Affero General Public License v3.0
+                                        * @link    https://git.pleroma.social/pleroma/pleroma/-/blob/develop/priv/static/images/avi.png
+                                        */
+                                       $default = '/images/default/pleroma.png';
+                                       break;
+
+                               case 'plume':
+                                       /**
+                                        * Picture credits
+                                        * @license GNU Affero General Public License v3.0
+                                        * @link    https://github.com/Plume-org/Plume/blob/main/assets/images/default-avatar.png
+                                        */
+                                       $default = '/images/default/plume.png';
+                                       break;
+                       }
                        return DI::baseUrl() . $default;
                }
 
@@ -1752,11 +1958,11 @@ class Contact
         * @param string  $updated Contact update date
         * @return string avatar link
         */
-       public static function getAvatarUrlForId(int $cid, string $size = '', string $updated = '', string $guid = ''):string
+       public static function getAvatarUrlForId(int $cid, string $size = '', string $updated = '', string $guid = ''): string
        {
                // We have to fetch the "updated" variable when it wasn't provided
                // The parameter can be provided to improve performance
-               if (empty($updated) || empty($guid)) {
+               if (empty($updated)) {
                        $account = DBA::selectFirst('account-user-view', ['updated', 'guid'], ['id' => $cid]);
                        $updated = $account['updated'] ?? '';
                        $guid = $account['guid'] ?? '';
@@ -1793,7 +1999,7 @@ class Contact
         * @param string  $size One of the Proxy::SIZE_* constants
         * @return string avatar link
         */
-       public static function getAvatarUrlForUrl(string $url, int $uid, string $size = ''):string
+       public static function getAvatarUrlForUrl(string $url, int $uid, string $size = ''): string
        {
                $condition = ["`nurl` = ? AND ((`uid` = ? AND `network` IN (?, ?)) OR `uid` = ?)",
                        Strings::normaliseLink($url), $uid, Protocol::FEED, Protocol::MAIL, 0];
@@ -1809,7 +2015,7 @@ class Contact
         * @param string  $updated Contact update date
         * @return string header link
         */
-       public static function getHeaderUrlForId(int $cid, string $size = '', string $updated = '', string $guid = ''):string
+       public static function getHeaderUrlForId(int $cid, string $size = '', string $updated = '', string $guid = ''): string
        {
                // We have to fetch the "updated" variable when it wasn't provided
                // The parameter can be provided to improve performance
@@ -1858,7 +2064,7 @@ class Contact
         */
        public static function updateAvatar(int $cid, string $avatar, bool $force = false, bool $create_cache = false)
        {
-               $contact = DBA::selectFirst('contact', ['uid', 'avatar', 'photo', 'thumb', 'micro', 'xmpp', 'addr', 'nurl', 'url', 'network'],
+               $contact = DBA::selectFirst('contact', ['uid', 'avatar', 'photo', 'thumb', 'micro', 'xmpp', 'addr', 'nurl', 'url', 'network', 'uri-id'],
                        ['id' => $cid, 'self' => false]);
                if (!DBA::isResult($contact)) {
                        return;
@@ -1899,6 +2105,8 @@ class Contact
                }
 
                if (in_array($contact['network'], [Protocol::FEED, Protocol::MAIL]) || $cache_avatar) {
+                       Avatar::deleteCache($contact);
+
                        if ($default_avatar && Proxy::isLocalImage($avatar)) {
                                $fields = ['avatar' => $avatar, 'avatar-date' => DateTimeFormat::utcNow(),
                                        'photo' => $avatar,
@@ -1950,9 +2158,8 @@ class Contact
                        }
                } else {
                        Photo::delete(['uid' => $uid, 'contact-id' => $cid, 'photo-type' => Photo::CONTACT_AVATAR]);
-                       $fields = ['avatar' => $avatar, 'avatar-date' => DateTimeFormat::utcNow(),
-                               'photo' => '', 'thumb' => '', 'micro' => ''];
-                       $update = ($avatar != $contact['avatar'] . $contact['photo'] . $contact['thumb'] . $contact['micro']) || $force;
+                       $fields = Avatar::fetchAvatarContact($contact, $avatar, $force);
+                       $update = ($avatar . $fields['photo'] . $fields['thumb'] . $fields['micro'] != $contact['avatar'] . $contact['photo'] . $contact['thumb'] . $contact['micro']) || $force;
                }
 
                if (!$update) {
@@ -2105,6 +2312,8 @@ class Contact
        }
 
        /**
+        * Updates contact record by provided id and optional network
+        *
         * @param integer $id      contact id
         * @param string  $network Optional network we are probing for
         * @return boolean
@@ -2128,13 +2337,15 @@ class Contact
        }
 
        /**
+        * Updates contact record by provided id and probed data
+        *
         * @param integer $id      contact id
         * @param array   $ret     Probed data
         * @return boolean
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function updateFromProbeArray(int $id, array $ret)
+       private static function updateFromProbeArray(int $id, array $ret): bool
        {
                /*
                  Warning: Never ever fetch the public key via Probe::uri and write it into the contacts.
@@ -2230,6 +2441,13 @@ class Contact
                $new_pubkey = $ret['pubkey'] ?? '';
 
                if ($uid == 0) {
+                       if ($ret['network'] == Protocol::ACTIVITYPUB) {
+                               $apcontact = APContact::getByURL($ret['url'], false);
+                               if (!empty($apcontact['featured'])) {
+                                       Worker::add(PRIORITY_LOW, 'FetchFeaturedPosts', $ret['url']);
+                               }
+                       }
+
                        $ret['last-item'] = Probe::getLastUpdate($ret);
                        Logger::info('Fetched last item', ['id' => $id, 'probed_url' => $ret['url'], 'last-item' => $ret['last-item'], 'callstack' => System::callstack(20)]);
                }
@@ -2338,12 +2556,14 @@ class Contact
        }
 
        /**
+        * Updates contact record by provided URL
+        *
         * @param integer $url contact url
         * @return integer Contact id
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function updateFromProbeByURL($url)
+       public static function updateFromProbeByURL(string $url): int
        {
                $id = self::getIdForURL($url);
 
@@ -2364,7 +2584,7 @@ class Contact
         * @param string $network Network of that contact
         * @return string with protocol
         */
-       public static function getProtocol($url, $network)
+       public static function getProtocol(string $url, string $network): string
        {
                if ($network != Protocol::DFRN) {
                        return $network;
@@ -2400,7 +2620,7 @@ class Contact
         * @throws HTTPException\NotFoundException
         * @throws \ImagickException
         */
-       public static function createFromProbeForUser(int $uid, $url, $network = '')
+       public static function createFromProbeForUser(int $uid, string $url, string $network = ''): array
        {
                $result = ['cid' => -1, 'success' => false, 'message' => ''];
 
@@ -2437,6 +2657,11 @@ class Contact
                } else {
                        $probed = true;
                        $ret = Probe::uri($url, $network, $uid);
+
+                       // Ensure that the public contact exists
+                       if ($ret['network'] != Protocol::PHANTOM) {
+                               self::getIdForURL($url);
+                       }
                }
 
                if (($network != '') && ($ret['network'] != $network)) {
@@ -2574,28 +2799,6 @@ class Contact
                return $result;
        }
 
-       /**
-        * Unfollow a contact
-        *
-        * @param int $cid Public contact id
-        * @param int $uid  User ID
-        *
-        * @return bool "true" if unfollowing had been successful
-        */
-       public static function unfollow(int $cid, int $uid)
-       {
-               $cdata = self::getPublicAndUserContactID($cid, $uid);
-               if (empty($cdata['user'])) {
-                       return false;
-               }
-
-               $contact = self::getById($cdata['user']);
-
-               self::removeSharer([], $contact);
-
-               return true;
-       }
-
        /**
         * @param array  $importer Owner (local user) data
         * @param array  $contact  Existing owner-specific contact data we want to expand the relationship with. Optional.
@@ -2606,14 +2809,14 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function addRelationship(array $importer, array $contact, array $datarray, $sharing = false, $note = '')
+       public static function addRelationship(array $importer, array $contact, array $datarray, bool $sharing = false, string $note = '')
        {
                // Should always be set
                if (empty($datarray['author-id'])) {
                        return false;
                }
 
-               $fields = ['url', 'name', 'nick', 'avatar', 'photo', 'network', 'blocked'];
+               $fields = ['id', 'url', 'name', 'nick', 'avatar', 'photo', 'network', 'blocked'];
                $pub_contact = DBA::selectFirst('contact', $fields, ['id' => $datarray['author-id']]);
                if (!DBA::isResult($pub_contact)) {
                        // Should never happen
@@ -2637,6 +2840,8 @@ class Contact
                        $contact = DBA::selectFirst('contact', [], ['id' => $cid]);
                }
 
+               self::clearFollowerFollowingEndpointCache($importer['uid']);
+
                if (!empty($contact)) {
                        if (!empty($contact['pending'])) {
                                Logger::info('Pending contact request already exists.', ['url' => $url, 'uid' => $importer['uid']]);
@@ -2661,7 +2866,7 @@ class Contact
                        // Ensure to always have the correct network type, independent from the connection request method
                        self::updateFromProbe($contact['id']);
 
-                       Post\UserNotification::insertNotification($contact['id'], Activity::FOLLOW, $importer['uid']);
+                       Post\UserNotification::insertNotification($pub_contact['id'], Activity::FOLLOW, $importer['uid']);
 
                        return true;
                } else {
@@ -2692,7 +2897,7 @@ class Contact
 
                        self::updateAvatar($contact_id, $photo, true);
 
-                       Post\UserNotification::insertNotification($contact_id, Activity::FOLLOW, $importer['uid']);
+                       Post\UserNotification::insertNotification($pub_contact['id'], Activity::FOLLOW, $importer['uid']);
 
                        $contact_record = DBA::selectFirst('contact', ['id', 'network', 'name', 'url', 'photo'], ['id' => $contact_id]);
 
@@ -2712,9 +2917,7 @@ class Contact
 
                                Group::addMember(User::getDefaultGroup($importer['uid']), $contact_record['id']);
 
-                               if (($user['notify-flags'] & Notification\Type::INTRO) &&
-                                       in_array($user['page-flags'], [User::PAGE_FLAGS_NORMAL])) {
-
+                               if (($user['notify-flags'] & Notification\Type::INTRO) && $user['page-flags'] == User::PAGE_FLAGS_NORMAL) {
                                        DI::notify()->createFromArray([
                                                'type'  => Notification\Type::INTRO,
                                                'otype' => Notification\ObjectType::INTRO,
@@ -2744,23 +2947,47 @@ class Contact
                return null;
        }
 
+       /**
+        * Update the local relationship when a local user loses a follower
+        *
+        * @param array $contact User-specific contact (uid != 0) array
+        * @return void
+        * @throws HTTPException\InternalServerErrorException
+        * @throws \ImagickException
+        */
        public static function removeFollower(array $contact)
        {
                if (in_array($contact['rel'] ?? [], [self::FRIEND, self::SHARING])) {
-                       DBA::update('contact', ['rel' => self::SHARING], ['id' => $contact['id']]);
+                       self::update(['rel' => self::SHARING], ['id' => $contact['id']]);
                } elseif (!empty($contact['id'])) {
                        self::remove($contact['id']);
                } else {
                        DI::logger()->info('Couldn\'t remove follower because of invalid contact array', ['contact' => $contact, 'callstack' => System::callstack()]);
+                       return;
                }
+
+               self::clearFollowerFollowingEndpointCache($contact['uid']);
+
+               $cdata = self::getPublicAndUserContactID($contact['id'], $contact['uid']);
+
+               DI::notification()->deleteForUserByVerb($contact['uid'], Activity::FOLLOW, ['actor-id' => $cdata['public']]);
        }
 
-       public static function removeSharer($importer, $contact)
+       /**
+        * Update the local relationship when a local user unfollow a contact.
+        * Removes the contact for sharing-only protocols (feed and mail).
+        *
+        * @param array $contact User-specific contact (uid != 0) array
+        * @throws HTTPException\InternalServerErrorException
+        */
+       public static function removeSharer(array $contact)
        {
-               if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::FOLLOWER)) {
-                       self::update(['rel' => self::FOLLOWER], ['id' => $contact['id']]);
-               } else {
+               self::clearFollowerFollowingEndpointCache($contact['uid']);
+
+               if ($contact['rel'] == self::SHARING || in_array($contact['network'], [Protocol::FEED, Protocol::MAIL])) {
                        self::remove($contact['id']);
+               } else {
+                       self::update(['rel' => self::FOLLOWER], ['id' => $contact['id']]);
                }
        }
 
@@ -2810,7 +3037,7 @@ class Contact
         * @return array
         * @throws \Exception
         */
-       public static function pruneUnavailable(array $contact_ids)
+       public static function pruneUnavailable(array $contact_ids): array
        {
                if (empty($contact_ids)) {
                        return [];
@@ -2838,7 +3065,7 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function magicLink($contact_url, $url = '')
+       public static function magicLink(string $contact_url, string $url = ''): string
        {
                if (!Session::isAuthenticated()) {
                        return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
@@ -2865,7 +3092,7 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function magicLinkById($cid, $url = '')
+       public static function magicLinkById(int $cid, string $url = ''): string
        {
                $contact = DBA::selectFirst('contact', ['id', 'network', 'url', 'uid'], ['id' => $cid]);
 
@@ -2882,7 +3109,7 @@ class Contact
         * @throws HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function magicLinkByContact($contact, $url = '')
+       public static function magicLinkByContact(array $contact, string $url = ''): string
        {
                $destination = $url ?: $contact['url']; // Equivalent to ($url != '') ? $url : $contact['url'];
 
@@ -2923,7 +3150,7 @@ class Contact
         *
         * @return boolean "true" if it is a forum
         */
-       public static function isForum($contactid)
+       public static function isForum(int $contactid): bool
        {
                $fields = ['contact-type'];
                $condition = ['id' => $contactid];
@@ -2942,7 +3169,7 @@ class Contact
         * @param array $contact
         * @return bool
         */
-       public static function canReceivePrivateMessages(array $contact)
+       public static function canReceivePrivateMessages(array $contact): bool
        {
                $protocol = $contact['network'] ?? $contact['protocol'] ?? Protocol::PHANTOM;
                $self = $contact['self'] ?? false;
@@ -2960,7 +3187,7 @@ class Contact
         * @return array with search results
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       public static function searchByName(string $search, string $mode = '', int $uid = 0)
+       public static function searchByName(string $search, string $mode = '', int $uid = 0): array
        {
                if (empty($search)) {
                        return [];
@@ -3003,7 +3230,7 @@ class Contact
         * @param array $urls
         * @return array result "count", "added" and "updated"
         */
-       public static function addByUrls(array $urls)
+       public static function addByUrls(array $urls): array
        {
                $added = 0;
                $updated = 0;
@@ -3036,7 +3263,7 @@ class Contact
         * @return array The profile array
         * @throws Exception
         */
-       public static function getRandomContact()
+       public static function getRandomContact(): array
        {
                $contact = DBA::selectFirst('contact', ['id', 'network', 'url', 'uid'], [
                        "`uid` = ? AND `network` = ? AND NOT `failed` AND `last-item` > ?",