-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

--

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

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

--

local datamanager = require "util.datamanager";

local log = require "util.logger".init("usermanager");

local type = type;

local error = error;

local ipairs = ipairs;

local hashes = require "util.hashes";

local jid_bare = require "util.jid".bare;

local config = require "core.configmanager";

local hosts = hosts;

local require_provisioning = config.get("*", "core", "cyrus_require_provisioning") or false;

local prosody = _G.prosody;

local setmetatable = setmetatable;

module "usermanager"

function new_null_provider()

	local function dummy() end;

	return setmetatable({name = "null"}, { __index = function() return dummy; end });

end

local function host_handler(host)

	local host_session = hosts[host];

	host_session.events.add_handler("item-added/auth-provider", function (event)

		local provider = event.item;

			host_session.users = provider;

		end

		if host_session.users ~= nil and host_session.users.name ~= nil then

			log("debug", "host '%s' now set to use user provider '%s'", host, host_session.users.name);

		end

	end);

	host_session.events.add_handler("item-removed/auth-provider", function (event)

		local provider = event.item;

		if host_session.users == provider then

			host_session.users = new_null_provider();

		end

	end);

   	host_session.users = new_null_provider(); -- Start with the default usermanager provider

end;

prosody.events.add_handler("host-activated", host_handler, 100);

prosody.events.add_handler("component-activated", host_handler, 100);

function is_cyrus(host) return config.get(host, "core", "sasl_backend") == "cyrus"; end

function test_password(username, password, host)

	return hosts[host].users.test_password(username, password);

end

function get_password(username, host)

	return hosts[host].users.get_password(username);

end

function set_password(username, password, host)

	return hosts[host].users.set_password(username, password);

end

function user_exists(username, host)

	return hosts[host].users.user_exists(username);

end

function create_user(username, password, host)

	return hosts[host].users.create_user(username, password);

end

function get_supported_methods(host)

	return hosts[host].users.get_supported_methods();

end

function get_provider(host)

	return hosts[host].users;

end

function is_admin(jid, host)

	if host and host ~= "*" then

		return hosts[host].users.is_admin(jid);

	else -- Test only whether this JID is a global admin

		local admins = config.get("*", "core", "admins");

		if type(admins) == "table" then

			jid = jid_bare(jid);

			for _,admin in ipairs(admins) do

				if admin == jid then return true; end

			end

		elseif admins then

			log("error", "Option 'admins' for host '%s' is not a table", host);

		end

		return nil;

	end

end

return _M;