]> git.mxchange.org Git - friendica.git/blobdiff - mod/item.php
Merge pull request #13142 from annando/collapse-author
[friendica.git] / mod / item.php
index cc8e9538583ff3c53fd19f1785f58eba47f2775e..369b0888a29449bbac8239ea1c16c92d7c2c642b 100644 (file)
@@ -1,6 +1,6 @@
 <?php
 /**
- * @copyright Copyright (C) 2010-2022, the Friendica project
+ * @copyright Copyright (C) 2010-2023, the Friendica project
  *
  * @license GNU AGPL version 3 or any later version
  *
@@ -19,7 +19,7 @@
  *
  * This is the POST destination for most all locally posted
  * text stuff. This function handles status, wall-to-wall status,
- * local comments, and remote coments that are posted on this site
+ * local comments, and remote comments that are posted on this site
  * (as opposed to being delivered in a feed).
  * Also processed here are posts and comments coming through the
  * statusnet/twitter API.
  */
 
 use Friendica\App;
-use Friendica\Content\PageInfo;
+use Friendica\Content\Conversation;
 use Friendica\Content\Text\BBCode;
 use Friendica\Core\Hook;
 use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
-use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\Core\Worker;
 use Friendica\Database\DBA;
 use Friendica\DI;
-use Friendica\Model\Attach;
 use Friendica\Model\Contact;
-use Friendica\Model\Conversation;
-use Friendica\Model\FileTag;
 use Friendica\Model\Item;
 use Friendica\Model\ItemURI;
-use Friendica\Model\Notification;
-use Friendica\Model\Photo;
 use Friendica\Model\Post;
-use Friendica\Model\Tag;
-use Friendica\Model\User;
 use Friendica\Network\HTTPException;
-use Friendica\Object\EMail\ItemCCEMail;
-use Friendica\Protocol\Activity;
-use Friendica\Security\Security;
 use Friendica\Util\DateTimeFormat;
-use Friendica\Util\ParseUrl;
 
 function item_post(App $a) {
-       if (!Session::isAuthenticated()) {
+       $uid = DI::userSession()->getLocalUserId();
+
+       if (!$uid) {
                throw new HTTPException\ForbiddenException();
        }
 
-       $uid = local_user();
-
        if (!empty($_REQUEST['dropitems'])) {
-               $arr_drop = explode(',', $_REQUEST['dropitems']);
-               foreach ($arr_drop as $item) {
-                       Item::deleteForUser(['id' => $item], $uid);
-               }
-
-               $json = ['success' => 1];
-               System::jsonExit($json);
+               item_drop($uid, $_REQUEST['dropitems']);
        }
 
        Hook::callAll('post_local_start', $_REQUEST);
 
-       Logger::debug('postvars', ['_REQUEST' => $_REQUEST]);
-
-       $api_source = $_REQUEST['api_source'] ?? false;
-
        $return_path = $_REQUEST['return'] ?? '';
-       $preview = intval($_REQUEST['preview'] ?? 0);
+       $preview     = intval($_REQUEST['preview'] ?? 0);
 
        /*
         * Check for doubly-submitted posts, and reject duplicates
@@ -89,684 +67,257 @@ function item_post(App $a) {
         * after it's been previewed
         */
        if (!$preview && !empty($_REQUEST['post_id_random'])) {
-               if (!empty($_SESSION['post-random']) && $_SESSION['post-random'] == $_REQUEST['post_id_random']) {
+               if (DI::session()->get('post-random') == $_REQUEST['post_id_random']) {
                        Logger::warning('duplicate post');
-                       item_post_return(DI::baseUrl(), $api_source, $return_path);
+                       item_post_return(DI::baseUrl(), $return_path);
                } else {
-                       $_SESSION['post-random'] = $_REQUEST['post_id_random'];
-               }
-       }
-
-       // Is this a reply to something?
-       $parent_item_id = intval($_REQUEST['parent'] ?? 0);
-       $thr_parent_uri = trim($_REQUEST['parent_uri'] ?? '');
-
-       $parent_item = null;
-       $toplevel_item = null;
-       $toplevel_item_id = 0;
-       $toplevel_user_id = null;
-
-       $objecttype = null;
-       $profile_uid = ($_REQUEST['profile_uid'] ?? 0) ?: local_user();
-       $posttype = ($_REQUEST['post_type'] ?? '') ?: Item::PT_ARTICLE;
-
-       if ($parent_item_id || $thr_parent_uri) {
-               if ($parent_item_id) {
-                       $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $parent_item_id]);
-               } elseif ($thr_parent_uri) {
-                       $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
-               }
-
-               // if this isn't the top-level parent of the conversation, find it
-               if (DBA::isResult($parent_item)) {
-                       // The URI and the contact is taken from the direct parent which needn't to be the top parent
-                       $thr_parent_uri = $parent_item['uri'];
-                       $toplevel_item = $parent_item;
-
-                       if ($parent_item['gravity'] != GRAVITY_PARENT) {
-                               $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
-                       }
-               }
-
-               if (!DBA::isResult($toplevel_item)) {
-                       DI::sysmsg()->addNotice(DI::l10n()->t('Unable to locate original post.'));
-                       if ($return_path) {
-                               DI::baseUrl()->redirect($return_path);
-                       }
-                       throw new HTTPException\NotFoundException(DI::l10n()->t('Unable to locate original post.'));
-               }
-
-               // When commenting on a public post then store the post for the current user
-               // This enables interaction like starring and saving into folders
-               if ($toplevel_item['uid'] == 0) {
-                       $stored = Item::storeForUserByUriId($toplevel_item['uri-id'], local_user(), ['post-reason' => Item::PR_ACTIVITY]);
-                       Logger::info('Public item stored for user', ['uri-id' => $toplevel_item['uri-id'], 'uid' => $uid, 'stored' => $stored]);
-                       if ($stored) {
-                               $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $stored]);
-                       }
+                       DI::session()->set('post-random', $_REQUEST['post_id_random']);
                }
-
-               $toplevel_item_id = $toplevel_item['id'];
-               $toplevel_user_id = $toplevel_item['uid'];
-
-               $objecttype = Activity\ObjectType::COMMENT;
        }
 
-       if ($toplevel_item_id) {
-               Logger::info('mod_item: item_post', ['parent' => $toplevel_item_id]);
-       }
-
-       $post_id     = intval($_REQUEST['post_id'] ?? 0);
-       $app         = strip_tags($_REQUEST['source'] ?? '');
-       $extid       = strip_tags($_REQUEST['extid'] ?? '');
-       $object      = $_REQUEST['object'] ?? '';
-
-       // Don't use "defaults" here. It would turn 0 to 1
-       if (!isset($_REQUEST['wall'])) {
-               $wall = 1;
+       if (empty($_REQUEST['post_id'])) {
+               item_insert($uid, $_REQUEST, $preview, $return_path);
        } else {
-               $wall = $_REQUEST['wall'];
+               item_edit($uid, $_REQUEST, $preview, $return_path);
        }
+}
 
-       // Ensure that the user id in a thread always stay the same
-       if (!is_null($toplevel_user_id) && in_array($toplevel_user_id, [local_user(), 0])) {
-               $profile_uid = $toplevel_user_id;
+function item_drop(int $uid, string $dropitems)
+{
+       $arr_drop = explode(',', $dropitems);
+       foreach ($arr_drop as $item) {
+               Item::deleteForUser(['id' => $item], $uid);
        }
 
-       // Allow commenting if it is an answer to a public post
-       $allow_comment = local_user() && $toplevel_item_id && in_array($toplevel_item['private'], [Item::PUBLIC, Item::UNLISTED]) && in_array($toplevel_item['network'], Protocol::FEDERATED);
+       System::jsonExit(['success' => 1]);
+}
 
-       // Now check that valid personal details have been provided
-       if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
-               Logger::warning('Permission denied.', ['local' => local_user(), 'profile_uid' => $profile_uid, 'toplevel_item_id' => $toplevel_item_id, 'network' => $toplevel_item['network']]);
-               DI::sysmsg()->addNotice(DI::l10n()->t('Permission denied.'));
+function item_edit(int $uid, array $request, bool $preview, string $return_path)
+{
+       $post = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $request['post_id'], 'uid' => $uid]);
+       if (!DBA::isResult($post)) {
                if ($return_path) {
+                       DI::sysmsg()->addNotice(DI::l10n()->t('Unable to locate original post.'));
                        DI::baseUrl()->redirect($return_path);
                }
-
-               throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
+               throw new HTTPException\NotFoundException(DI::l10n()->t('Unable to locate original post.'));
        }
 
-       // Init post instance
-       $orig_post = null;
+       $post['edit'] = $post;
+       $post['file'] = Post\Category::getTextByURIId($post['uri-id'], $post['uid']);   
 
-       // is this an edited post?
-       if ($post_id > 0) {
-               $orig_post = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
-       }
+       Post\Media::deleteByURIId($post['uri-id'], [Post\Media::AUDIO, Post\Media::VIDEO, Post\Media::IMAGE, Post\Media::HTML]);
+       $post = item_process($post, $request, $preview, $return_path);
 
-       $user = User::getById($profile_uid, ['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid']);
-       if (!DBA::isResult($user) && !$toplevel_item_id) {
-               return 0;
-       }
+       $fields = [
+               'title'    => $post['title'],
+               'body'     => $post['body'],
+               'attach'   => $post['attach'],
+               'file'     => $post['file'],
+               'location' => $post['location'],
+               'coord'    => $post['coord'],
+               'edited'   => DateTimeFormat::utcNow(),
+               'changed'  => DateTimeFormat::utcNow()
+       ];
 
-       $categories = '';
-       $postopts = '';
-       $emailcc = '';
-       $body = $_REQUEST['body'] ?? '';
-       $has_attachment = $_REQUEST['has_attachment'] ?? 0;
-
-       // If we have a speparate attachment, we need to add it to the body.
-       if (!empty($has_attachment)) {
-               $attachment_type  = $_REQUEST['attachment_type'] ??  '';
-               $attachment_title = $_REQUEST['attachment_title'] ?? '';
-               $attachment_text  = $_REQUEST['attachment_text'] ??  '';
-
-               $attachment_url     = hex2bin($_REQUEST['attachment_url'] ??     '');
-               $attachment_img_src = hex2bin($_REQUEST['attachment_img_src'] ?? '');
-
-               $attachment_img_width  = $_REQUEST['attachment_img_width'] ??  0;
-               $attachment_img_height = $_REQUEST['attachment_img_height'] ?? 0;
-
-               // Fetch the basic attachment data
-               $attachment = ParseUrl::getSiteinfoCached($attachment_url);
-               unset($attachment['keywords']);
-
-               // Overwrite the basic data with possible changes from the frontend
-               $attachment['type'] = $attachment_type;
-               $attachment['title'] = $attachment_title;
-               $attachment['text'] = $attachment_text;
-               $attachment['url'] = $attachment_url;
-
-               if (!empty($attachment_img_src)) {
-                       $attachment['images'] = [
-                               0 => [
-                                       'src'    => $attachment_img_src,
-                                       'width'  => $attachment_img_width,
-                                       'height' => $attachment_img_height
-                               ]
-                       ];
-               } else {
-                       unset($attachment['images']);
-               }
+       $fields['body'] = Item::setHashtags($fields['body']);
 
-               $att_bbcode = "\n" . PageInfo::getFooterFromData($attachment);
-               $body .= $att_bbcode;
+       $quote_uri_id = Item::getQuoteUriId($fields['body'], $post['uid']);
+       if (!empty($quote_uri_id)) {
+               $fields['quote-uri-id'] = $quote_uri_id;
+               $fields['body']         = BBCode::removeSharedData($post['body']);
        }
 
-       // Convert links with empty descriptions to links without an explicit description
-       $body = preg_replace('#\[url=([^\]]*?)\]\[/url\]#ism', '[url]$1[/url]', $body);
-
-       if (!empty($orig_post)) {
-               $str_group_allow   = $orig_post['allow_gid'];
-               $str_contact_allow = $orig_post['allow_cid'];
-               $str_group_deny    = $orig_post['deny_gid'];
-               $str_contact_deny  = $orig_post['deny_cid'];
-               $location          = $orig_post['location'];
-               $coord             = $orig_post['coord'];
-               $verb              = $orig_post['verb'];
-               $objecttype        = $orig_post['object-type'];
-               $app               = $orig_post['app'];
-               $categories        = Post\Category::getTextByURIId($orig_post['uri-id'], $orig_post['uid']);
-               $title             = trim($_REQUEST['title'] ?? '');
-               $body              = trim($body);
-               $private           = $orig_post['private'];
-               $pubmail_enabled   = $orig_post['pubmail'];
-               $network           = $orig_post['network'];
-               $guid              = $orig_post['guid'];
-               $extid             = $orig_post['extid'];
-       } else {
-               $aclFormatter = DI::aclFormatter();
-               $str_contact_allow = isset($_REQUEST['contact_allow']) ? $aclFormatter->toString($_REQUEST['contact_allow']) : $user['allow_cid'] ?? '';
-               $str_group_allow   = isset($_REQUEST['group_allow'])   ? $aclFormatter->toString($_REQUEST['group_allow'])   : $user['allow_gid'] ?? '';
-               $str_contact_deny  = isset($_REQUEST['contact_deny'])  ? $aclFormatter->toString($_REQUEST['contact_deny'])  : $user['deny_cid']  ?? '';
-               $str_group_deny    = isset($_REQUEST['group_deny'])    ? $aclFormatter->toString($_REQUEST['group_deny'])    : $user['deny_gid']  ?? '';
-
-               $visibility = $_REQUEST['visibility'] ?? '';
-               if ($visibility === 'public') {
-                       // The ACL selector introduced in version 2019.12 sends ACL input data even when the Public visibility is selected
-                       $str_contact_allow = $str_group_allow = $str_contact_deny = $str_group_deny = '';
-               } else if ($visibility === 'custom') {
-                       // Since we know from the visibility parameter the item should be private, we have to prevent the empty ACL
-                       // case that would make it public. So we always append the author's contact id to the allowed contacts.
-                       // See https://github.com/friendica/friendica/issues/9672
-                       $str_contact_allow .= $aclFormatter->toString(Contact::getPublicIdByUserId($uid));
-               }
-
-               $title             = trim($_REQUEST['title']    ?? '');
-               $location          = trim($_REQUEST['location'] ?? '');
-               $coord             = trim($_REQUEST['coord']    ?? '');
-               $verb              = trim($_REQUEST['verb']     ?? '');
-               $emailcc           = trim($_REQUEST['emailcc']  ?? '');
-               $body              = trim($body);
-               $network           = trim(($_REQUEST['network']  ?? '') ?: Protocol::DFRN);
-               $guid              = System::createUUID();
-
-               $postopts = $_REQUEST['postopts'] ?? '';
-
-               if (strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) {
-                       $private = Item::PRIVATE;
-               } elseif (DI::pConfig()->get($profile_uid, 'system', 'unlisted')) {
-                       $private = Item::UNLISTED;
-               } else {
-                       $private = Item::PUBLIC;
-               }
-
-               // If this is a comment, set the permissions from the parent.
+       Item::update($fields, ['id' => $post['id']]);
+       Item::updateDisplayCache($post['uri-id']);
 
-               if ($toplevel_item) {
-                       // for non native networks use the network of the original post as network of the item
-                       if (($toplevel_item['network'] != Protocol::DIASPORA)
-                               && ($toplevel_item['network'] != Protocol::OSTATUS)
-                               && ($network == "")) {
-                               $network = $toplevel_item['network'];
-                       }
-
-                       $str_contact_allow = $toplevel_item['allow_cid'] ?? '';
-                       $str_group_allow   = $toplevel_item['allow_gid'] ?? '';
-                       $str_contact_deny  = $toplevel_item['deny_cid'] ?? '';
-                       $str_group_deny    = $toplevel_item['deny_gid'] ?? '';
-                       $private           = $toplevel_item['private'];
-
-                       $wall              = $toplevel_item['wall'];
-               }
+       if ($return_path) {
+               DI::baseUrl()->redirect($return_path);
+       }
 
-               $pubmail_enabled = ($_REQUEST['pubmail_enable'] ?? false) && !$private;
+       throw new HTTPException\OKException(DI::l10n()->t('Post updated.'));
+}
 
-               // if using the API, we won't see pubmail_enable - figure out if it should be set
-               if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
-                       if (function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) {
-                               $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
+function item_insert(int $uid, array $request, bool $preview, string $return_path)
+{
+       $post = ['uid' => $uid];
+       $post = DI::contentItem()->initializePost($post);
+
+       $post['edit']      = null;
+       $post['post-type'] = $request['post_type'] ?? '';
+       $post['wall']      = $request['wall'] ?? true;
+       $post['pubmail']   = $request['pubmail_enable'] ?? false;
+       $post['created']   = $request['created_at'] ?? DateTimeFormat::utcNow();
+       $post['edited']    = $post['changed'] = $post['commented'] = $post['created'];
+       $post['app']       = '';
+       $post['inform']    = '';
+       $post['postopts']  = '';
+       $post['file']      = '';
+
+       if (!empty($request['parent'])) {
+               $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $request['parent']]);
+               if ($parent_item) {
+                       // if this isn't the top-level parent of the conversation, find it
+                       if ($parent_item['gravity'] != Item::GRAVITY_PARENT) {
+                               $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $parent_item['parent']]);
+                       } else {
+                               $toplevel_item = $parent_item;
                        }
                }
 
-               if (!strlen($body)) {
-                       if ($preview) {
-                               System::jsonExit(['preview' => '']);
-                       }
-
-                       DI::sysmsg()->addNotice(DI::l10n()->t('Empty post discarded.'));
+               if (empty($toplevel_item)) {
                        if ($return_path) {
+                               DI::sysmsg()->addNotice(DI::l10n()->t('Unable to locate original post.'));
                                DI::baseUrl()->redirect($return_path);
                        }
-
-                       throw new HTTPException\BadRequestException(DI::l10n()->t('Empty post discarded.'));
+                       throw new HTTPException\NotFoundException(DI::l10n()->t('Unable to locate original post.'));
                }
-       }
-
-       if (!empty($categories)) {
-               // get the "fileas" tags for this post
-               $filedas = FileTag::fileToArray($categories);
-       }
-
-       $list_array = explode(',', trim($_REQUEST['category'] ?? ''));
-       $categories = FileTag::arrayToFile($list_array, 'category');
-
-       if (!empty($filedas) && is_array($filedas)) {
-               // append the fileas stuff to the new categories list
-               $categories .= FileTag::arrayToFile($filedas);
-       }
-
-       // get contact info for poster
-
-       $author = null;
-       $self   = false;
-       $contact_id = 0;
-
-       if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
-               $self = true;
-               $author = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
-       } elseif (!empty(Session::getRemoteContactID($profile_uid))) {
-               $author = DBA::selectFirst('contact', [], ['id' => Session::getRemoteContactID($profile_uid)]);
-       }
 
-       if (DBA::isResult($author)) {
-               $contact_id = $author['id'];
-       }
-
-       // get contact info for owner
-       if ($profile_uid == local_user() || $allow_comment) {
-               $contact_record = $author ?: [];
-       } else {
-               $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]) ?: [];
-       }
+               // When commenting on a public post then store the post for the current user
+               // This enables interaction like starring and saving into folders
+               if ($toplevel_item['uid'] == 0) {
+                       $stored = Item::storeForUserByUriId($toplevel_item['uri-id'], $post['uid'], ['post-reason' => Item::PR_ACTIVITY]);
+                       Logger::info('Public item stored for user', ['uri-id' => $toplevel_item['uri-id'], 'uid' => $post['uid'], 'stored' => $stored]);
+               }
 
-       // Personal notes must never be altered to a forum post.
-       if ($posttype != Item::PT_PERSONAL_NOTE) {
-               // Look for any tags and linkify them
-               $item = [
-                       'uid'       => local_user() ? local_user() : $profile_uid,
-                       'gravity'   => $toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT,
-                       'network'   => $network,
-                       'body'      => $body,
-                       'postopts'  => $postopts,
-                       'private'   => $private,
-                       'allow_cid' => $str_contact_allow,
-                       'allow_gid' => $str_group_allow,
-                       'deny_cid'  => $str_contact_deny,
-                       'deny_gid'  => $str_group_deny,
-               ];
-
-               $item = DI::contentItem()->expandTags($item);
-
-               $body              = $item['body'];
-               $inform            = $item['inform'];
-               $postopts          = $item['postopts'];
-               $private           = $item['private'];
-               $str_contact_allow = $item['allow_cid'];
-               $str_group_allow   = $item['allow_gid'];
-               $str_contact_deny  = $item['deny_cid'];
-               $str_group_deny    = $item['deny_gid'];
+               $post['parent']      = $toplevel_item['id'];
+               $post['gravity']     = Item::GRAVITY_COMMENT;
+               $post['thr-parent']  = $parent_item['uri'];
+               $post['wall']        = $toplevel_item['wall'];
        } else {
-               $inform   = '';
+               $parent_item         = [];
+               $post['parent']      = 0;
+               $post['gravity']     = Item::GRAVITY_PARENT;
+               $post['thr-parent']  = $post['uri'];
        }
 
-       /*
-        * When a photo was uploaded into the message using the (profile wall) ajax
-        * uploader, The permissions are initially set to disallow anybody but the
-        * owner from seeing it. This is because the permissions may not yet have been
-        * set for the post. If it's private, the photo permissions should be set
-        * appropriately. But we didn't know the final permissions on the post until
-        * now. So now we'll look for links of uploaded messages that are in the
-        * post and set them to the same permissions as the post itself.
-        */
+       $post = DI::contentItem()->getACL($post, $parent_item, $request);
 
-       $match = null;
+       $post['pubmail'] = $post['pubmail'] && !$post['private'];
 
-       if (!$preview && Photo::setPermissionFromBody($body, $uid, $contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)) {
-               $objecttype = Activity\ObjectType::IMAGE;
-       }
+       $post = item_process($post, $request, $preview, $return_path);
 
-       /*
-        * Next link in any attachment references we find in the post.
-        */
-       $match = [];
-
-       /// @todo these lines should be moved to Model/Attach (Once it exists)
-       if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
-               $attaches = $match[1];
-               if (count($attaches)) {
-                       foreach ($attaches as $attach) {
-                               // Ensure to only modify attachments that you own
-                               $srch = '<' . intval($contact_id) . '>';
-
-                               $condition = [
-                                       'allow_cid' => $srch,
-                                       'allow_gid' => '',
-                                       'deny_cid' => '',
-                                       'deny_gid' => '',
-                                       'id' => $attach,
-                               ];
-                               if (!Attach::exists($condition)) {
-                                       continue;
-                               }
-
-                               $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
-                                               'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
-                               $condition = ['id' => $attach];
-                               Attach::update($fields, $condition);
-                       }
+       $post_id = Item::insert($post);
+       if (!$post_id) {
+               if ($return_path) {
+                       DI::sysmsg()->addNotice(DI::l10n()->t('Item wasn\'t stored.'));
+                       DI::baseUrl()->redirect($return_path);
                }
-       }
-
-       // embedded bookmark or attachment in post? set bookmark flag
 
-       $data = BBCode::getAttachmentData($body);
-       $match = [];
-       if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
-               && ($posttype != Item::PT_PERSONAL_NOTE)) {
-               $posttype = Item::PT_PAGE;
-               $objecttype =  Activity\ObjectType::BOOKMARK;
+               throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item wasn\'t stored.'));
        }
 
-       $body = DI::bbCodeVideo()->transform($body);
-
-       $body = BBCode::scaleExternalImages($body);
-
-       // Setting the object type if not defined before
-       if (!$objecttype) {
-               $objecttype = Activity\ObjectType::NOTE; // Default value
-               $objectdata = BBCode::getAttachedData($body);
-
-               if ($objectdata["type"] == "link") {
-                       $objecttype = Activity\ObjectType::BOOKMARK;
-               } elseif ($objectdata["type"] == "video") {
-                       $objecttype = Activity\ObjectType::VIDEO;
-               } elseif ($objectdata["type"] == "photo") {
-                       $objecttype = Activity\ObjectType::IMAGE;
+       $post = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
+       if (!$post) {
+               Logger::error('Item couldn\'t be fetched.', ['post_id' => $post_id]);
+               if ($return_path) {
+                       DI::baseUrl()->redirect($return_path);
                }
 
+               throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item couldn\'t be fetched.'));
        }
 
-       $attachments = '';
-       $match = [];
-
-       if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
-               foreach ($match[2] as $mtch) {
-                       $fields = ['id', 'filename', 'filesize', 'filetype'];
-                       $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
-                       if ($attachment !== false) {
-                               if (strlen($attachments)) {
-                                       $attachments .= ',';
-                               }
-                               $attachments .= Post\Media::getAttachElement(DI::baseUrl() . '/attach/' . $attachment['id'],
-                                       $attachment['filesize'], $attachment['filetype'], $attachment['filename'] ?? '');
-                       }
-                       $body = str_replace($match[1],'',$body);
-               }
-       }
-
-       if (!strlen($verb)) {
-               $verb = Activity::POST;
-       }
+       $recipients = explode(',', $request['emailcc'] ?? '');
 
-       if ($network == "") {
-               $network = Protocol::DFRN;
-       }
+       DI::contentItem()->postProcessPost($post, $recipients);
 
-       $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
+       Logger::debug('post_complete');
 
-       // even if the post arrived via API we are considering that it
-       // originated on this site by default for determining relayability.
+       item_post_return(DI::baseUrl(), $return_path);
+       // NOTREACHED
+}
 
-       // Don't use "defaults" here. It would turn 0 to 1
-       if (!isset($_REQUEST['origin'])) {
-               $origin = 1;
-       } else {
-               $origin = $_REQUEST['origin'];
-       }
+function item_process(array $post, array $request, bool $preview, string $return_path): array
+{
+       $post['self']       = true;
+       $post['api_source'] = false;
+       $post['attach']     = '';
+       $post['title']      = trim($request['title'] ?? '');
+       $post['body']       = $request['body'] ?? '';
+       $post['location']   = trim($request['location'] ?? '');
+       $post['coord']      = trim($request['coord'] ?? '');
 
-       $uri = Item::newURI($guid);
+       $post = DI::contentItem()->addCategories($post, $request['category'] ?? '');
 
-       // Fallback so that we alway have a parent uri
-       if (!$thr_parent_uri || !$toplevel_item_id) {
-               $thr_parent_uri = $uri;
+       // Add the attachment to the body.
+       if (!empty($request['has_attachment'])) {
+               $post['body'] .= DI::contentItem()->storeAttachmentFromRequest($request);
        }
 
-       $datarray = [];
-       $datarray['uid']           = $profile_uid;
-       $datarray['wall']          = $wall;
-       $datarray['gravity']       = $gravity;
-       $datarray['network']       = $network;
-       $datarray['contact-id']    = $contact_id;
-       $datarray['owner-name']    = $contact_record['name'] ?? '';
-       $datarray['owner-link']    = $contact_record['url'] ?? '';
-       $datarray['owner-avatar']  = $contact_record['thumb'] ?? '';
-       $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
-       $datarray['author-name']   = $author['name'];
-       $datarray['author-link']   = $author['url'];
-       $datarray['author-avatar'] = $author['thumb'];
-       $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
-       $datarray['created']       = empty($_REQUEST['created_at']) ? DateTimeFormat::utcNow() : $_REQUEST['created_at'];
-       $datarray['edited']        = $datarray['created'];
-       $datarray['commented']     = $datarray['created'];
-       $datarray['changed']       = $datarray['created'];
-       $datarray['received']      = DateTimeFormat::utcNow();
-       $datarray['extid']         = $extid;
-       $datarray['guid']          = $guid;
-       $datarray['uri']           = $uri;
-       $datarray['title']         = $title;
-       $datarray['body']          = $body;
-       $datarray['app']           = $app;
-       $datarray['location']      = $location;
-       $datarray['coord']         = $coord;
-       $datarray['file']          = $categories;
-       $datarray['inform']        = $inform;
-       $datarray['verb']          = $verb;
-       $datarray['post-type']     = $posttype;
-       $datarray['object-type']   = $objecttype;
-       $datarray['allow_cid']     = $str_contact_allow;
-       $datarray['allow_gid']     = $str_group_allow;
-       $datarray['deny_cid']      = $str_contact_deny;
-       $datarray['deny_gid']      = $str_group_deny;
-       $datarray['private']       = $private;
-       $datarray['pubmail']       = $pubmail_enabled;
-       $datarray['attach']        = $attachments;
-
-       $datarray['thr-parent']    = $thr_parent_uri;
-
-       $datarray['postopts']      = $postopts;
-       $datarray['origin']        = $origin;
-       $datarray['object']        = $object;
-
-       $datarray['attachments']   = $_REQUEST['attachments'] ?? [];
+       $post = DI::contentItem()->finalizePost($post);
 
-       /*
-        * These fields are for the convenience of addons...
-        * 'self' if true indicates the owner is posting on their own wall
-        * If parent is 0 it is a top-level post.
-        */
-       $datarray['parent']        = $toplevel_item_id;
-       $datarray['self']          = $self;
-
-       // This triggers posts via API and the mirror functions
-       $datarray['api_source'] = $api_source;
-
-       // This field is for storing the raw conversation data
-       $datarray['protocol'] = Conversation::PARCEL_DIRECT;
-       $datarray['direction'] = Conversation::PUSH;
+       if (!strlen($post['body'])) {
+               if ($preview) {
+                       System::jsonExit(['preview' => '']);
+               }
 
-       $datarray['edit'] = $orig_post;
+               if ($return_path) {
+                       DI::sysmsg()->addNotice(DI::l10n()->t('Empty post discarded.'));
+                       DI::baseUrl()->redirect($return_path);
+               }
 
-       // Check for hashtags in the body and repair or add hashtag links
-       if ($preview || $orig_post) {
-               $datarray['body'] = Item::setHashtags($datarray['body']);
+               throw new HTTPException\BadRequestException(DI::l10n()->t('Empty post discarded.'));
        }
 
        // preview mode - prepare the body for display and send it via json
        if ($preview) {
-               // We set the datarray ID to -1 because in preview mode the dataray
-               // doesn't have an ID.
-               $datarray["id"] = -1;
-               $datarray["uri-id"] = -1;
-               $datarray["author-network"] = Protocol::DFRN;
-               $datarray["author-updated"] = '';
-               $datarray["author-gsid"] = 0;
-               $datarray["author-uri-id"] = ItemURI::getIdByURI($datarray["author-link"]);
-               $datarray["owner-updated"] = '';
-               $datarray["has-media"] = false;
-               $datarray['body'] = Item::improveSharedDataInBody($datarray);
-
-               $o = DI::conversation()->create([array_merge($contact_record, $datarray)], 'search', false, true);
+               // We have to preset some fields, so that the conversation can be displayed
+               $post['id']             = -1;
+               $post['uri-id']         = -1;
+               $post['author-network'] = Protocol::DFRN;
+               $post['author-updated'] = '';
+               $post['author-gsid']    = 0;
+               $post['author-uri-id']  = ItemURI::getIdByURI($post['author-link']);
+               $post['owner-updated']  = '';
+               $post['has-media']      = false;
+               $post['quote-uri-id']   = Item::getQuoteUriId($post['body'], $post['uid']);
+               $post['body']           = BBCode::removeSharedData(Item::setHashtags($post['body']));
+               $post['writable']       = true;
+
+               $o = DI::conversation()->create([$post], Conversation::MODE_SEARCH, false, true);
 
                System::jsonExit(['preview' => $o]);
        }
 
-       Hook::callAll('post_local',$datarray);
+       Hook::callAll('post_local',$post);
+
+       unset($post['edit']);
+       unset($post['self']);
+       unset($post['api_source']);
 
-       if (!empty($_REQUEST['scheduled_at'])) {
-               $scheduled_at = DateTimeFormat::convert($_REQUEST['scheduled_at'], 'UTC', $a->getTimeZone());
+       if (!empty($request['scheduled_at'])) {
+               $scheduled_at = DateTimeFormat::convert($request['scheduled_at'], 'UTC', DI::app()->getTimeZone());
                if ($scheduled_at > DateTimeFormat::utcNow()) {
-                       unset($datarray['created']);
-                       unset($datarray['edited']);
-                       unset($datarray['commented']);
-                       unset($datarray['received']);
-                       unset($datarray['changed']);
-                       unset($datarray['edit']);
-                       unset($datarray['self']);
-                       unset($datarray['api_source']);
-
-                       Post\Delayed::add($datarray['uri'], $datarray, Worker::PRIORITY_HIGH, Post\Delayed::PREPARED_NO_HOOK, $scheduled_at);
-                       item_post_return(DI::baseUrl(), $api_source, $return_path);
+                       unset($post['created']);
+                       unset($post['edited']);
+                       unset($post['commented']);
+                       unset($post['received']);
+                       unset($post['changed']);
+
+                       Post\Delayed::add($post['uri'], $post, Worker::PRIORITY_HIGH, Post\Delayed::PREPARED_NO_HOOK, $scheduled_at);
+                       item_post_return(DI::baseUrl(), $return_path);
                }
        }
 
-       if (!empty($datarray['cancel'])) {
+       if (!empty($post['cancel'])) {
                Logger::info('mod_item: post cancelled by addon.');
                if ($return_path) {
                        DI::baseUrl()->redirect($return_path);
                }
 
                $json = ['cancel' => 1];
-               if (!empty($_REQUEST['jsreload'])) {
-                       $json['reload'] = DI::baseUrl() . '/' . $_REQUEST['jsreload'];
+               if (!empty($request['jsreload'])) {
+                       $json['reload'] = DI::baseUrl() . '/' . $request['jsreload'];
                }
 
                System::jsonExit($json);
        }
 
-       $datarray['uri-id'] = ItemURI::getIdByURI($datarray['uri']);
-       $datarray['body']   = Item::improveSharedDataInBody($datarray);
-
-       if ($orig_post) {
-               $fields = [
-                       'title' => $datarray['title'],
-                       'body' => $datarray['body'],
-                       'attach' => $datarray['attach'],
-                       'file' => $datarray['file'],
-                       'edited' => DateTimeFormat::utcNow(),
-                       'changed' => DateTimeFormat::utcNow()
-               ];
-
-               Item::update($fields, ['id' => $post_id]);
-               Item::updateDisplayCache($datarray['uri-id']);
-
-               if ($return_path) {
-                       DI::baseUrl()->redirect($return_path);
-               }
-
-               throw new HTTPException\OKException(DI::l10n()->t('Post updated.'));
-       }
-
-       unset($datarray['edit']);
-       unset($datarray['self']);
-       unset($datarray['api_source']);
-
-       $post_id = Item::insert($datarray);
-
-       if (!$post_id) {
-               DI::sysmsg()->addNotice(DI::l10n()->t('Item wasn\'t stored.'));
-               if ($return_path) {
-                       DI::baseUrl()->redirect($return_path);
-               }
-
-               throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item wasn\'t stored.'));
-       }
-
-       $datarray = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
-
-       if (!DBA::isResult($datarray)) {
-               Logger::error('Item couldn\'t be fetched.', ['post_id' => $post_id]);
-               if ($return_path) {
-                       DI::baseUrl()->redirect($return_path);
-               }
-
-               throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item couldn\'t be fetched.'));
-       }
-
-       Tag::storeFromBody($datarray['uri-id'], $datarray['body']);
-
-       if (!\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions') && ($datarray['gravity'] == GRAVITY_COMMENT)) {
-               Tag::createImplicitMentions($datarray['uri-id'], $datarray['thr-parent-id']);
-       }
-
-       // These notifications are sent if someone else is commenting other your wall
-       if ($contact_record != $author) {
-               if ($toplevel_item_id) {
-                       DI::notify()->createFromArray([
-                               'type'  => Notification\Type::COMMENT,
-                               'otype' => Notification\ObjectType::ITEM,
-                               'verb'  => Activity::POST,
-                               'uid'   => $profile_uid,
-                               'cid'   => $datarray['author-id'],
-                               'item'  => $datarray,
-                               'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
-                       ]);
-               } elseif (empty($forum_contact)) {
-                       DI::notify()->createFromArray([
-                               'type'  => Notification\Type::WALL,
-                               'otype' => Notification\ObjectType::ITEM,
-                               'verb'  => Activity::POST,
-                               'uid'   => $profile_uid,
-                               'cid'   => $datarray['author-id'],
-                               'item'  => $datarray,
-                               'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
-                       ]);
-               }
-       }
-
-       Hook::callAll('post_local_end', $datarray);
-
-       if (strlen($emailcc) && $profile_uid == local_user()) {
-               $recipients = explode(',', $emailcc);
-               if (count($recipients)) {
-                       foreach ($recipients as $recipient) {
-                               $address = trim($recipient);
-                               if (!strlen($address)) {
-                                       continue;
-                               }
-                               DI::emailer()->send(new ItemCCEMail(DI::app(), DI::l10n(), DI::baseUrl(),
-                                       $datarray, $address, $author['thumb'] ?? ''));
-                       }
-               }
-       }
-
-       Logger::debug('post_complete');
-
-       if ($api_source) {
-               return $post_id;
-       }
-
-       item_post_return(DI::baseUrl(), $api_source, $return_path);
-       // NOTREACHED
+       return $post;
 }
 
-function item_post_return($baseurl, $api_source, $return_path)
+function item_post_return($baseurl, $return_path)
 {
-       if ($api_source) {
-               return;
-       }
-
        if ($return_path) {
                DI::baseUrl()->redirect($return_path);
        }
@@ -783,7 +334,7 @@ function item_post_return($baseurl, $api_source, $return_path)
 
 function item_content(App $a)
 {
-       if (!Session::isAuthenticated()) {
+       if (!DI::userSession()->isAuthenticated()) {
                throw new HTTPException\UnauthorizedException();
        }
 
@@ -797,9 +348,9 @@ function item_content(App $a)
        switch ($args->get(1)) {
                case 'drop':
                        if (DI::mode()->isAjax()) {
-                               Item::deleteForUser(['id' => $args->get(2)], local_user());
+                               Item::deleteForUser(['id' => $args->get(2)], DI::userSession()->getLocalUserId());
                                // ajax return: [<item id>, 0 (no perm) | <owner id>]
-                               System::jsonExit([intval($args->get(2)), local_user()]);
+                               System::jsonExit([intval($args->get(2)), DI::userSession()->getLocalUserId()]);
                        } else {
                                if (!empty($args->get(3))) {
                                        $o = drop_item($args->get(2), $args->get(3));
@@ -808,17 +359,50 @@ function item_content(App $a)
                                }
                        }
                        break;
+
                case 'block':
-                       $item = Post::selectFirstForUser(local_user(), ['guid', 'author-id', 'parent', 'gravity'], ['id' => $args->get(2)]);
+                       $item = Post::selectFirstForUser(DI::userSession()->getLocalUserId(), ['guid', 'author-id', 'parent', 'gravity'], ['id' => $args->get(2)]);
                        if (empty($item['author-id'])) {
                                throw new HTTPException\NotFoundException('Item not found');
                        }
 
-                       Contact\User::setBlocked($item['author-id'], local_user(), true);
+                       Contact\User::setBlocked($item['author-id'], DI::userSession()->getLocalUserId(), true);
 
                        if (DI::mode()->isAjax()) {
                                // ajax return: [<item id>, 0 (no perm) | <owner id>]
-                               System::jsonExit([intval($args->get(2)), local_user()]);
+                               System::jsonExit([intval($args->get(2)), DI::userSession()->getLocalUserId()]);
+                       } else {
+                               item_redirect_after_action($item, $args->get(3));
+                       }
+                       break;
+
+               case 'ignore':
+                       $item = Post::selectFirstForUser(DI::userSession()->getLocalUserId(), ['guid', 'author-id', 'parent', 'gravity'], ['id' => $args->get(2)]);
+                       if (empty($item['author-id'])) {
+                               throw new HTTPException\NotFoundException('Item not found');
+                       }
+
+                       Contact\User::setIgnored($item['author-id'], DI::userSession()->getLocalUserId(), true);
+
+                       if (DI::mode()->isAjax()) {
+                               // ajax return: [<item id>, 0 (no perm) | <owner id>]
+                               System::jsonExit([intval($args->get(2)), DI::userSession()->getLocalUserId()]);
+                       } else {
+                               item_redirect_after_action($item, $args->get(3));
+                       }
+                       break;
+
+               case 'collapse':
+                       $item = Post::selectFirstForUser(DI::userSession()->getLocalUserId(), ['guid', 'author-id', 'parent', 'gravity'], ['id' => $args->get(2)]);
+                       if (empty($item['author-id'])) {
+                               throw new HTTPException\NotFoundException('Item not found');
+                       }
+
+                       Contact\User::setCollapsed($item['author-id'], DI::userSession()->getLocalUserId(), true);
+
+                       if (DI::mode()->isAjax()) {
+                               // ajax return: [<item id>, 0 (no perm) | <owner id>]
+                               System::jsonExit([intval($args->get(2)), DI::userSession()->getLocalUserId()]);
                        } else {
                                item_redirect_after_action($item, $args->get(3));
                        }
@@ -834,15 +418,15 @@ function item_content(App $a)
  * @return string
  * @throws HTTPException\InternalServerErrorException
  */
-function drop_item(int $id, string $return = '')
+function drop_item(int $id, string $return = ''): string
 {
-       // locate item to be deleted
-       $fields = ['id', 'uid', 'guid', 'contact-id', 'deleted', 'gravity', 'parent'];
-       $item = Post::selectFirstForUser(local_user(), $fields, ['id' => $id]);
+       // Locate item to be deleted
+       $item = Post::selectFirstForUser(DI::userSession()->getLocalUserId(), ['id', 'uid', 'guid', 'contact-id', 'deleted', 'gravity', 'parent'], ['id' => $id]);
 
        if (!DBA::isResult($item)) {
                DI::sysmsg()->addNotice(DI::l10n()->t('Item not found.'));
                DI::baseUrl()->redirect('network');
+               //NOTREACHED
        }
 
        if ($item['deleted']) {
@@ -852,17 +436,18 @@ function drop_item(int $id, string $return = '')
        $contact_id = 0;
 
        // check if logged in user is either the author or owner of this item
-       if (Session::getRemoteContactID($item['uid']) == $item['contact-id']) {
+       if (DI::userSession()->getRemoteContactID($item['uid']) == $item['contact-id']) {
                $contact_id = $item['contact-id'];
        }
 
-       if ((local_user() == $item['uid']) || $contact_id) {
+       if ((DI::userSession()->getLocalUserId() == $item['uid']) || $contact_id) {
                // delete the item
-               Item::deleteForUser(['id' => $item['id']], local_user());
+               Item::deleteForUser(['id' => $item['id']], DI::userSession()->getLocalUserId());
 
                item_redirect_after_action($item, $return);
+               //NOTREACHED
        } else {
-               Logger::warning('Permission denied.', ['local' => local_user(), 'uid' => $item['uid'], 'cid' => $contact_id]);
+               Logger::warning('Permission denied.', ['local' => DI::userSession()->getLocalUserId(), 'uid' => $item['uid'], 'cid' => $contact_id]);
                DI::sysmsg()->addNotice(DI::l10n()->t('Permission denied.'));
                DI::baseUrl()->redirect('display/' . $item['guid']);
                //NOTREACHED
@@ -871,17 +456,17 @@ function drop_item(int $id, string $return = '')
        return '';
 }
 
-function item_redirect_after_action($item, $returnUrlHex)
+function item_redirect_after_action(array $item, string $returnUrlHex)
 {
        $return_url = hex2bin($returnUrlHex);
 
        // removes update_* from return_url to ignore Ajax refresh
-       $return_url = str_replace("update_", "", $return_url);
+       $return_url = str_replace('update_', '', $return_url);
 
        // Check if delete a comment
-       if ($item['gravity'] == GRAVITY_COMMENT) {
+       if ($item['gravity'] == Item::GRAVITY_COMMENT) {
                if (!empty($item['parent'])) {
-                       $parentitem = Post::selectFirstForUser(local_user(), ['guid'], ['id' => $item['parent']]);
+                       $parentitem = Post::selectFirstForUser(DI::userSession()->getLocalUserId(), ['guid'], ['id' => $item['parent']]);
                }
 
                // Return to parent guid