move to psr-4 autoloader

2023-10-25 12:55:09 +03:00
parent 0a5507d3bd
commit 865ecc8796
75 changed files with 147 additions and 151 deletions
--- a/classes/API.php
+++ b/classes/API.php
@@ -0,0 +1,967 @@
+<?php
+class API extends Handler {
+
+	const API_LEVEL  = 21;
+
+	const STATUS_OK  = 0;
+	const STATUS_ERR = 1;
+
+	const E_API_DISABLED = "API_DISABLED";
+	const E_NOT_LOGGED_IN = "NOT_LOGGED_IN";
+	const E_LOGIN_ERROR = "LOGIN_ERROR";
+	const E_INCORRECT_USAGE = "INCORRECT_USAGE";
+	const E_UNKNOWN_METHOD = "UNKNOWN_METHOD";
+	const E_OPERATION_FAILED = "E_OPERATION_FAILED";
+	const E_NOT_FOUND = "E_NOT_FOUND";
+
+	/** @var int|null */
+	private $seq;
+
+	/**
+	 * @param array<int|string, mixed> $reply
+	 */
+	private function _wrap(int $status, array $reply): bool {
+		print json_encode([
+					"seq" => $this->seq,
+					"status" => $status,
+					"content" => $reply
+				]);
+		return true;
+	}
+
+	function before(string $method): bool {
+		if (parent::before($method)) {
+			header("Content-Type: text/json");
+
+			if (empty($_SESSION["uid"]) && $method != "login" && $method != "isloggedin") {
+				$this->_wrap(self::STATUS_ERR, array("error" => self::E_NOT_LOGGED_IN));
+				return false;
+			}
+
+			if (!empty($_SESSION["uid"]) && $method != "logout" && !get_pref(Prefs::ENABLE_API_ACCESS)) {
+				$this->_wrap(self::STATUS_ERR, array("error" => self::E_API_DISABLED));
+				return false;
+			}
+
+			$this->seq = (int) clean($_REQUEST['seq'] ?? 0);
+
+			return true;
+		}
+		return false;
+	}
+
+	function getVersion(): bool {
+		$rv = array("version" => Config::get_version());
+		return $this->_wrap(self::STATUS_OK, $rv);
+	}
+
+	function getApiLevel(): bool {
+		$rv = array("level" => self::API_LEVEL);
+		return $this->_wrap(self::STATUS_OK, $rv);
+	}
+
+	function login(): bool {
+
+		if (session_status() == PHP_SESSION_ACTIVE) {
+			session_destroy();
+		}
+
+		session_start();
+
+		$login = clean($_REQUEST["user"]);
+		$password = clean($_REQUEST["password"]);
+
+		if (Config::get(Config::SINGLE_USER_MODE)) $login = "admin";
+
+		if ($uid = UserHelper::find_user_by_login($login)) {
+			if (get_pref(Prefs::ENABLE_API_ACCESS, $uid)) {
+				if (UserHelper::authenticate($login, $password, false,  Auth_Base::AUTH_SERVICE_API)) {
+
+					// needed for _get_config()
+					UserHelper::load_user_plugins($_SESSION['uid']);
+
+					return $this->_wrap(self::STATUS_OK, array("session_id" => session_id(),
+						"config" => $this->_get_config(),
+						"api_level" => self::API_LEVEL));
+				} else {
+					return $this->_wrap(self::STATUS_ERR, array("error" => self::E_LOGIN_ERROR));
+				}
+			} else {
+				return $this->_wrap(self::STATUS_ERR, array("error" => self::E_API_DISABLED));
+			}
+		}
+		return $this->_wrap(self::STATUS_ERR, array("error" => self::E_LOGIN_ERROR));
+	}
+
+	function logout(): bool {
+		UserHelper::logout();
+		return $this->_wrap(self::STATUS_OK, array("status" => "OK"));
+	}
+
+	function isLoggedIn(): bool {
+		return $this->_wrap(self::STATUS_OK, array("status" => (bool)($_SESSION["uid"] ?? '')));
+	}
+
+	function getUnread(): bool {
+		$feed_id = clean($_REQUEST["feed_id"] ?? "");
+		$is_cat = self::_param_to_bool($_REQUEST["is_cat"] ?? false);
+
+		if ($feed_id) {
+			return $this->_wrap(self::STATUS_OK, array("unread" => Feeds::_get_counters($feed_id, $is_cat, true)));
+		} else {
+			return $this->_wrap(self::STATUS_OK, array("unread" => Feeds::_get_global_unread()));
+		}
+	}
+
+	/* Method added for ttrss-reader for Android */
+	function getCounters(): bool {
+		return $this->_wrap(self::STATUS_OK, Counters::get_all());
+	}
+
+	function getFeeds(): bool {
+		$cat_id = (int) clean($_REQUEST["cat_id"]);
+		$unread_only = self::_param_to_bool($_REQUEST["unread_only"] ?? false);
+		$limit = (int) clean($_REQUEST["limit"] ?? 0);
+		$offset = (int) clean($_REQUEST["offset"] ?? 0);
+		$include_nested = self::_param_to_bool($_REQUEST["include_nested"] ?? false);
+
+		$feeds = $this->_api_get_feeds($cat_id, $unread_only, $limit, $offset, $include_nested);
+
+		return $this->_wrap(self::STATUS_OK, $feeds);
+	}
+
+	function getCategories(): bool {
+		$unread_only = self::_param_to_bool($_REQUEST["unread_only"] ?? false);
+		$enable_nested = self::_param_to_bool($_REQUEST["enable_nested"] ?? false);
+		$include_empty = self::_param_to_bool($_REQUEST["include_empty"] ?? false);
+
+		// TODO do not return empty categories, return Uncategorized and standard virtual cats
+
+		$categories = ORM::for_table('ttrss_feed_categories')
+			->select_many('id', 'title', 'order_id')
+			->select_many_expr([
+				'num_feeds' => '(SELECT COUNT(id) FROM ttrss_feeds WHERE ttrss_feed_categories.id IS NOT NULL AND cat_id = ttrss_feed_categories.id)',
+				'num_cats' => '(SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE c2.parent_cat = ttrss_feed_categories.id)',
+			])
+			->where('owner_uid', $_SESSION['uid']);
+
+		if ($enable_nested) {
+			$categories->where_null('parent_cat');
+		}
+
+		$cats = [];
+
+		foreach ($categories->find_many() as $category) {
+			if ($include_empty || $category->num_feeds > 0 || $category->num_cats > 0) {
+				$unread = Feeds::_get_counters($category->id, true, true);
+
+				if ($enable_nested)
+					$unread += Feeds::_get_cat_children_unread($category->id);
+
+				if ($unread || !$unread_only) {
+					array_push($cats, [
+						'id' => (int) $category->id,
+						'title' => $category->title,
+						'unread' => (int) $unread,
+						'order_id' => (int) $category->order_id,
+					]);
+				}
+			}
+		}
+
+		foreach ([Feeds::CATEGORY_LABELS, Feeds::CATEGORY_SPECIAL, Feeds::CATEGORY_UNCATEGORIZED] as $cat_id) {
+			if ($include_empty || !$this->_is_cat_empty($cat_id)) {
+				$unread = Feeds::_get_counters($cat_id, true, true);
+
+				if ($unread || !$unread_only) {
+					array_push($cats, [
+						'id' => $cat_id,
+						'title' => Feeds::_get_cat_title($cat_id),
+						'unread' => (int) $unread,
+					]);
+				}
+			}
+		}
+
+		return $this->_wrap(self::STATUS_OK, $cats);
+	}
+
+	function getHeadlines(): bool {
+		$feed_id = clean($_REQUEST["feed_id"] ?? "");
+
+		if (!empty($feed_id) || is_numeric($feed_id)) { // is_numeric for feed_id "0"
+			$limit = (int)clean($_REQUEST["limit"] ?? 0 );
+
+			if (!$limit || $limit >= 200) $limit = 200;
+
+			$offset = (int)clean($_REQUEST["skip"] ?? 0);
+			$filter = clean($_REQUEST["filter"] ?? "");
+			$is_cat = self::_param_to_bool($_REQUEST["is_cat"] ?? false);
+			$show_excerpt = self::_param_to_bool($_REQUEST["show_excerpt"] ?? false);
+			$show_content = self::_param_to_bool($_REQUEST["show_content"] ?? false);
+			/* all_articles, unread, adaptive, marked, updated */
+			$view_mode = clean($_REQUEST["view_mode"] ?? null);
+			$include_attachments = self::_param_to_bool($_REQUEST["include_attachments"] ?? false);
+			$since_id = (int)clean($_REQUEST["since_id"] ?? 0);
+			$include_nested = self::_param_to_bool($_REQUEST["include_nested"] ?? false);
+			$sanitize_content = self::_param_to_bool($_REQUEST["sanitize"] ?? true);
+			$force_update = self::_param_to_bool($_REQUEST["force_update"] ?? false);
+			$has_sandbox = self::_param_to_bool($_REQUEST["has_sandbox"] ?? false);
+			$excerpt_length = (int)clean($_REQUEST["excerpt_length"] ?? 0);
+			$check_first_id = (int)clean($_REQUEST["check_first_id"] ?? 0);
+			$include_header = self::_param_to_bool($_REQUEST["include_header"] ?? false);
+
+			$_SESSION['hasSandbox'] = $has_sandbox;
+
+			list($override_order, $skip_first_id_check) = Feeds::_order_to_override_query(clean($_REQUEST["order_by"] ?? ""));
+
+			/* do not rely on params below */
+
+			$search = clean($_REQUEST["search"] ?? "");
+
+			list($headlines, $headlines_header) = $this->_api_get_headlines($feed_id, $limit, $offset,
+				$filter, $is_cat, $show_excerpt, $show_content, $view_mode, $override_order,
+				$include_attachments, $since_id, $search,
+				$include_nested, $sanitize_content, $force_update, $excerpt_length, $check_first_id, $skip_first_id_check);
+
+			if ($include_header) {
+				return $this->_wrap(self::STATUS_OK, array($headlines_header, $headlines));
+			} else {
+				return $this->_wrap(self::STATUS_OK, $headlines);
+			}
+		} else {
+			return $this->_wrap(self::STATUS_ERR, array("error" => self::E_INCORRECT_USAGE));
+		}
+	}
+
+	function updateArticle(): bool {
+		$article_ids = explode(",", clean($_REQUEST["article_ids"]));
+		$mode = (int) clean($_REQUEST["mode"]);
+		$data = clean($_REQUEST["data"] ?? "");
+		$field_raw = (int)clean($_REQUEST["field"]);
+
+		$field = "";
+		$set_to = "";
+		$additional_fields = "";
+
+		switch ($field_raw) {
+			case 0:
+				$field = "marked";
+				$additional_fields = ",last_marked = NOW()";
+				break;
+			case 1:
+				$field = "published";
+				$additional_fields = ",last_published = NOW()";
+				break;
+			case 2:
+				$field = "unread";
+				$additional_fields = ",last_read = NOW()";
+				break;
+			case 3:
+				$field = "note";
+				break;
+			case 4:
+				$field = "score";
+				break;
+		};
+
+		switch ($mode) {
+			case 1:
+				$set_to = "true";
+				break;
+			case 0:
+				$set_to = "false";
+				break;
+			case 2:
+				$set_to = "NOT $field";
+				break;
+		}
+
+		if ($field == "note") $set_to = $this->pdo->quote($data);
+		if ($field == "score") $set_to = (int) $data;
+
+		if ($field && $set_to && count($article_ids) > 0) {
+
+			$article_qmarks = arr_qmarks($article_ids);
+
+			$sth = $this->pdo->prepare("UPDATE ttrss_user_entries SET
+				$field = $set_to $additional_fields
+				WHERE ref_id IN ($article_qmarks) AND owner_uid = ?");
+			$sth->execute([...$article_ids, $_SESSION['uid']]);
+
+			$num_updated = $sth->rowCount();
+
+			return $this->_wrap(self::STATUS_OK, array("status" => "OK",
+				"updated" => $num_updated));
+
+		} else {
+			return $this->_wrap(self::STATUS_ERR, array("error" => self::E_INCORRECT_USAGE));
+		}
+	}
+
+	function getArticle(): bool {
+		$article_ids = explode(',', clean($_REQUEST['article_id'] ?? ''));
+		$sanitize_content = self::_param_to_bool($_REQUEST['sanitize'] ?? true);
+
+		// @phpstan-ignore-next-line
+		if (count($article_ids)) {
+			$entries = ORM::for_table('ttrss_entries')
+				->table_alias('e')
+				->select_many('e.id', 'e.guid', 'e.title', 'e.link', 'e.author', 'e.content', 'e.lang', 'e.comments',
+					'ue.feed_id', 'ue.int_id', 'ue.marked', 'ue.unread', 'ue.published', 'ue.score', 'ue.note')
+				->select_many_expr([
+					'updated' => SUBSTRING_FOR_DATE.'(updated,1,16)',
+					'feed_title' => '(SELECT title FROM ttrss_feeds WHERE id = ue.feed_id)',
+					'site_url' => '(SELECT site_url FROM ttrss_feeds WHERE id = ue.feed_id)',
+					'hide_images' => '(SELECT hide_images FROM ttrss_feeds WHERE id = feed_id)',
+				])
+				->join('ttrss_user_entries', [ 'ue.ref_id', '=', 'e.id'], 'ue')
+				->where_in('e.id', array_map('intval', $article_ids))
+				->where('ue.owner_uid', $_SESSION['uid'])
+				->find_many();
+
+			$articles = [];
+
+			foreach ($entries as $entry) {
+				$article = [
+					'id' => $entry->id,
+					'guid' => $entry->guid,
+					'title' => $entry->title,
+					'link' => $entry->link,
+					'labels' => Article::_get_labels($entry->id),
+					'unread' => self::_param_to_bool($entry->unread),
+					'marked' => self::_param_to_bool($entry->marked),
+					'published' => self::_param_to_bool($entry->published),
+					'comments' => $entry->comments,
+					'author' => $entry->author,
+					'updated' => (int) strtotime($entry->updated ?? ''),
+					'feed_id' => $entry->feed_id,
+					'attachments' => Article::_get_enclosures($entry->id),
+					'score' => (int) $entry->score,
+					'feed_title' => $entry->feed_title,
+					'note' => $entry->note,
+					'lang' => $entry->lang,
+				];
+
+				if ($sanitize_content) {
+					$article['content'] = Sanitizer::sanitize(
+						$entry->content,
+						self::_param_to_bool($entry->hide_images),
+						null, $entry->site_url, null, $entry->id);
+				} else {
+					$article['content'] = $entry->content;
+				}
+
+				$hook_object = ['article' => &$article];
+
+				PluginHost::getInstance()->chain_hooks_callback(PluginHost::HOOK_RENDER_ARTICLE_API,
+					function ($result) use (&$article) {
+						$article = $result;
+					},
+					$hook_object);
+
+				$article['content'] = DiskCache::rewrite_urls($article['content']);
+
+				array_push($articles, $article);
+			}
+
+			return $this->_wrap(self::STATUS_OK, $articles);
+		} else {
+			return $this->_wrap(self::STATUS_ERR, ['error' => self::E_INCORRECT_USAGE]);
+		}
+	}
+
+	/**
+	 * @return array<string, array<string, string>|bool|int|string>
+	 */
+	private function _get_config(): array {
+		$config = [
+			"icons_dir" => Config::get(Config::ICONS_DIR),
+			"icons_url" => Config::get(Config::ICONS_URL)
+		];
+
+		$config["daemon_is_running"] = file_is_locked("update_daemon.lock");
+		$config["custom_sort_types"] = $this->_get_custom_sort_types();
+
+		$config["num_feeds"] = ORM::for_table('ttrss_feeds')
+			->where('owner_uid', $_SESSION['uid'])
+			->count();
+
+		return $config;
+	}
+
+	function getConfig(): bool {
+		$config = $this->_get_config();
+
+		return $this->_wrap(self::STATUS_OK, $config);
+	}
+
+	function updateFeed(): bool {
+		$feed_id = (int) clean($_REQUEST["feed_id"]);
+
+		if (!ini_get("open_basedir")) {
+			RSSUtils::update_rss_feed($feed_id);
+		}
+
+		return $this->_wrap(self::STATUS_OK, array("status" => "OK"));
+	}
+
+	function catchupFeed(): bool {
+		$feed_id = clean($_REQUEST["feed_id"]);
+		$is_cat = self::_param_to_bool($_REQUEST["is_cat"] ?? false);
+		$mode = clean($_REQUEST["mode"] ?? "");
+
+		if (!in_array($mode, ["all", "1day", "1week", "2week"]))
+			$mode = "all";
+
+		Feeds::_catchup($feed_id, $is_cat, $_SESSION["uid"], $mode);
+
+		return $this->_wrap(self::STATUS_OK, array("status" => "OK"));
+	}
+
+	function getPref(): bool {
+		$pref_name = clean($_REQUEST["pref_name"]);
+
+		return $this->_wrap(self::STATUS_OK, array("value" => get_pref($pref_name)));
+	}
+
+	function getLabels(): bool {
+		$article_id = (int)clean($_REQUEST['article_id'] ?? -1);
+
+		$rv = [];
+
+		$labels = ORM::for_table('ttrss_labels2')
+			->where('owner_uid', $_SESSION['uid'])
+			->order_by_asc('caption')
+			->find_many();
+
+		if ($article_id)
+			$article_labels = Article::_get_labels($article_id);
+		else
+			$article_labels = [];
+
+		foreach ($labels as $label) {
+			$checked = false;
+			foreach ($article_labels as $al) {
+				if (Labels::feed_to_label_id($al[0]) == $label->id) {
+					$checked = true;
+					break;
+				}
+			}
+
+			array_push($rv, [
+				'id' => (int) Labels::label_to_feed_id($label->id),
+				'caption' => $label->caption,
+				'fg_color' => $label->fg_color,
+				'bg_color' => $label->bg_color,
+				'checked' => $checked,
+			]);
+		}
+
+		return $this->_wrap(self::STATUS_OK, $rv);
+	}
+
+	function setArticleLabel(): bool {
+
+		$article_ids = explode(",", clean($_REQUEST["article_ids"]));
+		$label_id = (int) clean($_REQUEST['label_id']);
+		$assign = self::_param_to_bool(clean($_REQUEST['assign']));
+
+		$label = Labels::find_caption(Labels::feed_to_label_id($label_id), $_SESSION["uid"]);
+
+		$num_updated = 0;
+
+		if ($label) {
+
+			foreach ($article_ids as $id) {
+
+				if ($assign)
+					Labels::add_article((int)$id, $label, $_SESSION["uid"]);
+				else
+					Labels::remove_article((int)$id, $label, $_SESSION["uid"]);
+
+				++$num_updated;
+
+			}
+		}
+
+		return $this->_wrap(self::STATUS_OK, array("status" => "OK",
+			"updated" => $num_updated));
+
+	}
+
+	function index(string $method): bool {
+		$plugin = PluginHost::getInstance()->get_api_method(strtolower($method));
+
+		if ($plugin && method_exists($plugin, $method)) {
+			$reply = $plugin->$method();
+
+			return $this->_wrap($reply[0], $reply[1]);
+
+		} else {
+			return $this->_wrap(self::STATUS_ERR, array("error" => self::E_UNKNOWN_METHOD, "method" => $method));
+		}
+	}
+
+	function shareToPublished(): bool {
+		$title = clean($_REQUEST["title"]);
+		$url = clean($_REQUEST["url"]);
+		$sanitize_content = self::_param_to_bool($_REQUEST["sanitize"] ?? true);
+
+		if ($sanitize_content)
+			$content = clean($_REQUEST["content"]);
+		else
+			$content = $_REQUEST["content"];
+
+		if (Article::_create_published_article($title, $url, $content, "", $_SESSION["uid"])) {
+			return $this->_wrap(self::STATUS_OK, array("status" => 'OK'));
+		} else {
+			return $this->_wrap(self::STATUS_ERR, array("error" => self::E_OPERATION_FAILED));
+		}
+	}
+
+	/**
+	 * @return array<int, array{'id': int, 'title': string, 'unread': int, 'cat_id': int}>
+	 */
+	private static function _api_get_feeds(int $cat_id, bool $unread_only, int $limit, int $offset, bool $include_nested = false): array {
+			$feeds = [];
+
+			/* Labels */
+
+			/* API only: -4 (Feeds::CATEGORY_ALL) All feeds, including virtual feeds */
+			if ($cat_id == Feeds::CATEGORY_ALL || $cat_id == Feeds::CATEGORY_LABELS) {
+				$counters = Counters::get_labels();
+
+				foreach (array_values($counters) as $cv) {
+					$unread = $cv['counter'];
+
+					if ($unread || !$unread_only) {
+						$row = [
+							'id' => (int) $cv['id'],
+							'title' => $cv['description'],
+							'unread' => $cv['counter'],
+							'cat_id' => Feeds::CATEGORY_LABELS,
+						];
+
+						array_push($feeds, $row);
+					}
+				}
+			}
+
+			/* Virtual feeds */
+
+			$vfeeds = PluginHost::getInstance()->get_feeds(Feeds::CATEGORY_SPECIAL);
+
+			if (is_array($vfeeds)) {
+				foreach ($vfeeds as $feed) {
+					if (!implements_interface($feed['sender'], 'IVirtualFeed'))
+						continue;
+
+					/** @var IVirtualFeed $feed['sender'] */
+					$unread = $feed['sender']->get_unread($feed['id']);
+
+					if ($unread || !$unread_only) {
+						$row = [
+							'id' => PluginHost::pfeed_to_feed_id($feed['id']),
+							'title' => $feed['title'],
+							'unread' => $unread,
+							'cat_id' => Feeds::CATEGORY_SPECIAL,
+						];
+
+						array_push($feeds, $row);
+					}
+				}
+			}
+
+			if ($cat_id == Feeds::CATEGORY_ALL || $cat_id == Feeds::CATEGORY_SPECIAL) {
+				foreach ([Feeds::FEED_STARRED, Feeds::FEED_PUBLISHED, Feeds::FEED_FRESH,
+					Feeds::FEED_ALL, Feeds::FEED_RECENTLY_READ, Feeds::FEED_ARCHIVED] as $i) {
+					$unread = Feeds::_get_counters($i, false, true);
+
+					if ($unread || !$unread_only) {
+						$title = Feeds::_get_title($i);
+
+						$row = [
+							'id' => $i,
+							'title' => $title,
+							'unread' => $unread,
+							'cat_id' => Feeds::CATEGORY_SPECIAL,
+						];
+
+						array_push($feeds, $row);
+					}
+				}
+			}
+
+			/* Child cats */
+
+			if ($include_nested && $cat_id) {
+				$categories = ORM::for_table('ttrss_feed_categories')
+					->where(['parent_cat' => $cat_id, 'owner_uid' => $_SESSION['uid']])
+					->order_by_asc('order_id')
+					->order_by_asc('title')
+					->find_many();
+
+				foreach ($categories as $category) {
+					$unread = Feeds::_get_counters($category->id, true, true) +
+						Feeds::_get_cat_children_unread($category->id);
+
+					if ($unread || !$unread_only) {
+						$row = [
+							'id' => (int) $category->id,
+							'title' => $category->title,
+							'unread' => $unread,
+							'is_cat' => true,
+							'order_id' => (int) $category->order_id,
+						];
+						array_push($feeds, $row);
+					}
+				}
+			}
+
+			/* Real feeds */
+
+			/* API only: -3 (Feeds::CATEGORY_ALL_EXCEPT_VIRTUAL) All feeds, excluding virtual feeds (e.g. Labels and such) */
+			$feeds_obj = ORM::for_table('ttrss_feeds')
+				->select_many('id', 'feed_url', 'cat_id', 'title', 'order_id')
+				->select_expr(SUBSTRING_FOR_DATE.'(last_updated,1,19)', 'last_updated')
+				->where('owner_uid', $_SESSION['uid'])
+				->order_by_asc('order_id')
+				->order_by_asc('title');
+
+			if ($limit) $feeds_obj->limit($limit);
+			if ($offset) $feeds_obj->offset($offset);
+
+			if ($cat_id != Feeds::CATEGORY_ALL_EXCEPT_VIRTUAL && $cat_id != Feeds::CATEGORY_ALL) {
+				$feeds_obj->where_raw('(cat_id = ? OR (? = 0 AND cat_id IS NULL))', [$cat_id, $cat_id]);
+			}
+
+			foreach ($feeds_obj->find_many() as $feed) {
+				$unread = Feeds::_get_counters($feed->id, false, true);
+				$has_icon = Feeds::_has_icon($feed->id);
+
+				if ($unread || !$unread_only) {
+					$row = [
+						'feed_url' => $feed->feed_url,
+						'title' => $feed->title,
+						'id' => (int) $feed->id,
+						'unread' => (int) $unread,
+						'has_icon' => $has_icon,
+						'cat_id' => (int) $feed->cat_id,
+						'last_updated' => (int) strtotime($feed->last_updated ?? ''),
+						'order_id' => (int) $feed->order_id,
+					];
+
+					array_push($feeds, $row);
+				}
+			}
+
+		return $feeds;
+	}
+
+	/**
+	 * @param string|int $feed_id
+	 * @return array{0: array<int, array<string, mixed>>, 1: array<string, mixed>} $headlines, $headlines_header
+	 */
+	private static function _api_get_headlines($feed_id, int $limit, int $offset,
+				string $filter, bool $is_cat, bool $show_excerpt, bool $show_content, ?string $view_mode, string $order,
+				bool $include_attachments, int $since_id, string $search = "", bool $include_nested = false,
+				bool $sanitize_content = true, bool $force_update = false, int $excerpt_length = 100, ?int $check_first_id = null,
+				bool $skip_first_id_check = false): array {
+
+			if ($force_update && is_numeric($feed_id) && $feed_id > 0) {
+				// Update the feed if required with some basic flood control
+
+				$feed = ORM::for_table('ttrss_feeds')
+					->select_many('id', 'cache_images')
+					->select_expr(SUBSTRING_FOR_DATE.'(last_updated,1,19)', 'last_updated')
+					->find_one($feed_id);
+
+				if ($feed) {
+					$last_updated = strtotime($feed->last_updated ?? '');
+					$cache_images = self::_param_to_bool($feed->cache_images);
+
+					if (!$cache_images && time() - $last_updated > 120) {
+						RSSUtils::update_rss_feed($feed_id, true);
+					} else {
+						$feed->last_updated = '1970-01-01';
+						$feed->last_update_started = '1970-01-01';
+						$feed->save();
+					}
+				}
+			}
+
+			$params = array(
+				"feed" => $feed_id,
+				"limit" => $limit,
+				"view_mode" => $view_mode,
+				"cat_view" => $is_cat,
+				"search" => $search,
+				"override_order" => $order,
+				"offset" => $offset,
+				"since_id" => $since_id,
+				"include_children" => $include_nested,
+				"check_first_id" => $check_first_id,
+				"skip_first_id_check" => $skip_first_id_check
+			);
+
+			$qfh_ret = [];
+
+			if (!$is_cat && is_numeric($feed_id) && $feed_id < PLUGIN_FEED_BASE_INDEX && $feed_id > LABEL_BASE_INDEX) {
+				$pfeed_id = PluginHost::feed_to_pfeed_id($feed_id);
+
+				/** @var IVirtualFeed|false $handler */
+				$handler = PluginHost::getInstance()->get_feed_handler($pfeed_id);
+
+				if ($handler) {
+					$params = array(
+						"feed" => $feed_id,
+						"limit" => $limit,
+						"view_mode" => $view_mode,
+						"cat_view" => $is_cat,
+						"search" => $search,
+						"override_order" => $order,
+						"offset" => $offset,
+						"since_id" => 0,
+						"include_children" => $include_nested,
+						"check_first_id" => $check_first_id,
+						"skip_first_id_check" => $skip_first_id_check
+					);
+
+					$qfh_ret = $handler->get_headlines($pfeed_id, $params);
+				}
+
+			} else {
+
+				$params = array(
+					"feed" => $feed_id,
+					"limit" => $limit,
+					"view_mode" => $view_mode,
+					"cat_view" => $is_cat,
+					"search" => $search,
+					"override_order" => $order,
+					"offset" => $offset,
+					"since_id" => $since_id,
+					"include_children" => $include_nested,
+					"check_first_id" => $check_first_id,
+					"skip_first_id_check" => $skip_first_id_check
+				);
+
+				$qfh_ret = Feeds::_get_headlines($params);
+			}
+
+			$result = $qfh_ret[0];
+			$feed_title = $qfh_ret[1];
+			$first_id = $qfh_ret[6];
+
+			$headlines = array();
+
+			$headlines_header = array(
+				'id' => $feed_id,
+				'first_id' => $first_id,
+				'is_cat' => $is_cat);
+
+			if (!is_numeric($result)) {
+				while ($line = $result->fetch()) {
+					$line["content_preview"] = truncate_string(strip_tags($line["content"]), $excerpt_length);
+
+					PluginHost::getInstance()->chain_hooks_callback(PluginHost::HOOK_QUERY_HEADLINES,
+						function ($result) use (&$line) {
+							$line = $result;
+						},
+						$line, $excerpt_length);
+
+					$is_updated = ($line["last_read"] == "" &&
+						($line["unread"] != "t" && $line["unread"] != "1"));
+
+					$tags = explode(",", $line["tag_cache"]);
+
+					$label_cache = $line["label_cache"];
+					$labels = false;
+
+					if ($label_cache) {
+						$label_cache = json_decode($label_cache, true);
+
+						if ($label_cache) {
+							if (($label_cache["no-labels"] ?? 0) == 1)
+								$labels = [];
+							else
+								$labels = $label_cache;
+						}
+					}
+
+					if (!is_array($labels)) $labels = Article::_get_labels($line["id"]);
+
+					$headline_row = array(
+						"id" => (int)$line["id"],
+						"guid" => $line["guid"],
+						"unread" => self::_param_to_bool($line["unread"]),
+						"marked" => self::_param_to_bool($line["marked"]),
+						"published" => self::_param_to_bool($line["published"]),
+						"updated" => (int)strtotime($line["updated"] ?? ''),
+						"is_updated" => $is_updated,
+						"title" => $line["title"],
+						"link" => $line["link"],
+						"feed_id" => $line["feed_id"] ? $line['feed_id'] : 0,
+						"tags" => $tags,
+					);
+
+					$enclosures = Article::_get_enclosures($line['id']);
+
+					if ($include_attachments)
+						$headline_row['attachments'] = $enclosures;
+
+					if ($show_excerpt)
+						$headline_row["excerpt"] = $line["content_preview"];
+
+					if ($show_content) {
+
+						if ($sanitize_content) {
+							$headline_row["content"] = Sanitizer::sanitize(
+								$line["content"],
+								self::_param_to_bool($line['hide_images']),
+								null, $line["site_url"], null, $line["id"]);
+						} else {
+							$headline_row["content"] = $line["content"];
+						}
+					}
+
+					// unify label output to ease parsing
+					if (($labels["no-labels"] ?? 0) == 1) $labels = [];
+
+					$headline_row["labels"] = $labels;
+
+					$headline_row["feed_title"] = isset($line["feed_title"]) ? $line["feed_title"] : $feed_title;
+
+					$headline_row["comments_count"] = (int)$line["num_comments"];
+					$headline_row["comments_link"] = $line["comments"];
+
+					$headline_row["always_display_attachments"] = self::_param_to_bool($line["always_display_enclosures"]);
+
+					$headline_row["author"] = $line["author"];
+
+					$headline_row["score"] = (int)$line["score"];
+					$headline_row["note"] = $line["note"];
+					$headline_row["lang"] = $line["lang"];
+
+					$headline_row["site_url"] = $line["site_url"];
+
+					if ($show_content) {
+						$hook_object = ["headline" => &$headline_row];
+
+						list ($flavor_image, $flavor_stream, $flavor_kind) = Article::_get_image($enclosures,
+																												$line["content"], // unsanitized
+																												$line["site_url"] ?? "", // could be null if archived article
+																												$headline_row);
+
+						$headline_row["flavor_image"] = $flavor_image;
+						$headline_row["flavor_stream"] = $flavor_stream;
+
+						/* optional */
+						if ($flavor_kind)
+							$headline_row["flavor_kind"] = $flavor_kind;
+
+						PluginHost::getInstance()->chain_hooks_callback(PluginHost::HOOK_RENDER_ARTICLE_API,
+							function ($result) use (&$headline_row) {
+								$headline_row = $result;
+							},
+							$hook_object);
+
+						$headline_row["content"] = DiskCache::rewrite_urls($headline_row['content']);
+					}
+
+					array_push($headlines, $headline_row);
+				}
+			} else if (is_numeric($result) && $result == -1) {
+				$headlines_header['first_id_changed'] = true;
+			}
+
+			return array($headlines, $headlines_header);
+	}
+
+	function unsubscribeFeed(): bool {
+		$feed_id = (int) clean($_REQUEST["feed_id"]);
+
+		$feed_exists = ORM::for_table('ttrss_feeds')
+			->where(['id' => $feed_id, 'owner_uid' => $_SESSION['uid']])
+			->count();
+
+		if ($feed_exists) {
+			Pref_Feeds::remove_feed($feed_id, $_SESSION['uid']);
+			return $this->_wrap(self::STATUS_OK, ['status' => 'OK']);
+		} else {
+			return $this->_wrap(self::STATUS_ERR, ['error' => self::E_OPERATION_FAILED]);
+		}
+	}
+
+	function subscribeToFeed(): bool {
+		$feed_url = clean($_REQUEST["feed_url"]);
+		$category_id = (int) clean($_REQUEST["category_id"]);
+		$login = clean($_REQUEST["login"] ?? "");
+		$password = clean($_REQUEST["password"] ?? "");
+
+		if ($feed_url) {
+			$rc = Feeds::_subscribe($feed_url, $category_id, $login, $password);
+
+			return $this->_wrap(self::STATUS_OK, array("status" => $rc));
+		} else {
+			return $this->_wrap(self::STATUS_ERR, array("error" => self::E_INCORRECT_USAGE));
+		}
+	}
+
+	function getFeedTree(): bool {
+		$include_empty = self::_param_to_bool($_REQUEST['include_empty'] ?? false);
+
+		$pf = new Pref_Feeds($_REQUEST);
+
+		$_REQUEST['mode'] = 2;
+		$_REQUEST['force_show_empty'] = $include_empty;
+
+		return $this->_wrap(self::STATUS_OK,
+			array("categories" => $pf->_makefeedtree()));
+	}
+
+	function getFeedIcon(): bool {
+		$id = (int)$_REQUEST['id'];
+		$cache = DiskCache::instance('feed-icons');
+
+		if ($cache->exists((string)$id)) {
+			return $cache->send((string)$id) > 0;
+		} else {
+			return $this->_wrap(self::STATUS_ERR, array("error" => self::E_NOT_FOUND));
+		}
+	}
+
+	// only works for labels or uncategorized for the time being
+	private function _is_cat_empty(int $id): bool {
+		if ($id == Feeds::CATEGORY_LABELS) {
+			$label_count = ORM::for_table('ttrss_labels2')
+				->where('owner_uid', $_SESSION['uid'])
+				->count();
+
+			return $label_count == 0;
+		} else if ($id == Feeds::CATEGORY_UNCATEGORIZED) {
+			$uncategorized_count = ORM::for_table('ttrss_feeds')
+				->where_null('cat_id')
+				->where('owner_uid', $_SESSION['uid'])
+				->count();
+
+			return $uncategorized_count == 0;
+		}
+
+		return false;
+	}
+
+	/** @return array<string, string>  */
+	private function _get_custom_sort_types(): array {
+		$ret = [];
+
+		PluginHost::getInstance()->run_hooks_callback(PluginHost::HOOK_HEADLINES_CUSTOM_SORT_MAP, function ($result) use (&$ret) {
+			foreach ($result as $sort_value => $sort_title) {
+				$ret[$sort_value] = $sort_title;
+			}
+		});
+
+		return $ret;
+	}
+}