host = $host;
		$host->add_hook($host::HOOK_ARTICLE_BUTTON, $this);
		$host->add_hook($host::HOOK_PREFS_TAB_SECTION, $this);
	}
	function get_js() {
		return file_get_contents(dirname(__FILE__) . "/share.js");
	}
	function get_css() {
		return file_get_contents(dirname(__FILE__) . "/share.css");
	}
	function get_prefs_js() {
		return file_get_contents(dirname(__FILE__) . "/share_prefs.js");
	}
	function unshare() {
		$id = $_REQUEST['id'];
		$sth = $this->pdo->prepare("UPDATE ttrss_user_entries SET uuid = '' WHERE int_id = ?
			AND owner_uid = ?");
		$sth->execute([$id, $_SESSION['uid']]);
		print "OK";
	}
	function hook_prefs_tab_section($id) {
		if ($id == "prefFeedsPublishedGenerated") {
			print "
" . __("You can disable all articles shared by unique URLs here.") . "
";
			print " ";
			print "";
		}
	}
	// Silent
	function clearArticleKeys() {
		$sth = $this->pdo->prepare("UPDATE ttrss_user_entries SET uuid = '' WHERE
			owner_uid = ?");
		$sth->execute([$_SESSION['uid']]);
		return;
	}
	function newkey() {
		$id = $_REQUEST['id'];
		$uuid = uniqid_short();
		$sth = $this->pdo->prepare("UPDATE ttrss_user_entries SET uuid = ? WHERE int_id = ?
			AND owner_uid = ?");
		$sth->execute([$uuid, $id, $_SESSION['uid']]);
		print json_encode(array("link" => $uuid));
	}
	function hook_article_button($line) {
		$img_class = $line['uuid'] ? "shared" : "";
		return "link";
	}
	function shareArticle() {
		$param = $_REQUEST['param'];
		$sth = $this->pdo->prepare("SELECT uuid FROM ttrss_user_entries WHERE int_id = ?
			AND owner_uid = ?");
		$sth->execute([$param, $_SESSION['uid']]);
		if ($row = $sth->fetch()) {
			$uuid = $row['uuid'];
			if (!$uuid) {
				$uuid = uniqid_short();
				$sth = $this->pdo->prepare("UPDATE ttrss_user_entries SET uuid = ? WHERE int_id = ?
					AND owner_uid = ?");
				$sth->execute([$uuid, $param, $_SESSION['uid']]);
			}
			print "" . __("You can share this article by the following unique URL:") . "";
			$url_path = get_self_url_prefix();
			$url_path .= "/public.php?op=share&key=$uuid";
			print "";
			/* if (!label_find_id(__('Shared'), $_SESSION["uid"]))
				label_create(__('Shared'), $_SESSION["uid"]);
			label_add_article($ref_id, __('Shared'), $_SESSION['uid']); */
		} else {
			print "Article not found.";
		}
		print "";
	}
	function api_version() {
		return 2;
	}
}