-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

-- Copyright (C) 2014 Daurnimator

--

-- This project is MIT/X11 licensed. Please see the

-- COPYING file in the source package for more information.

--

local _M = {};

_M.valid_affiliations = {

	outcast = -1;

	none = 0;

	member = 1;

	admin = 2;

	owner = 3;

};

_M.valid_roles = {

	none = 0;

	visitor = 1;

	participant = 2;

	moderator = 3;

};

local kickable_error_conditions = {

	["gone"] = true;

	["internal-server-error"] = true;

	["item-not-found"] = true;

	["jid-malformed"] = true;

	["recipient-unavailable"] = true;

	["redirect"] = true;

	["remote-server-not-found"] = true;

	["remote-server-timeout"] = true;

	["service-unavailable"] = true;

	["malformed error"] = true;

};

function _M.is_kickable_error(stanza)

	local cond = select(2, stanza:get_error()) or "malformed error";

	return kickable_error_conditions[cond];

end

local filtered_namespaces = module:shared("filtered-namespaces");

filtered_namespaces["http://jabber.org/protocol/muc"] = true;

filtered_namespaces["http://jabber.org/protocol/muc#user"] = true;

local function muc_ns_filter(tag)

	if filtered_namespaces[tag.attr.xmlns] then

		return nil;

	end

	return tag;

end

function _M.filter_muc_x(stanza)

	return stanza:maptags(muc_ns_filter);

end

function _M.add_filtered_namespace(xmlns)

	filtered_namespaces[xmlns] = true;

end

function _M.only_with_min_role(role)

	local min_role_value = _M.valid_roles[role];

	return function (nick, occupant) --luacheck: ignore 212/nick

		if _M.valid_roles[occupant.role or "none"] >= min_role_value then

			return true;

		end

	end;

end

return _M;