-- Prosody IM

-- Copyright (C) 2008-2009 Matthew Wild

-- Copyright (C) 2008-2009 Waqas Hussain

-- 

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

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

--

local plugin_dir = CFG_PLUGINDIR or "./plugins/";

local io_open, os_time = io.open, os.time;

local loadstring, pairs = loadstring, pairs;

local datamanager = require "util.datamanager";

module "pluginloader"

local function load_from_datastore(name)

	if not content or not content[1] then return nil, "Resource not found"; end

	return content[1], name;

end

local function load_file(name)

	local file, err = io_open(plugin_dir..name);

	if not file then return file, err; end

	local content = file:read("*a");

	file:close();

	return content, name;

end

function load_resource(plugin, resource, loader)

	if not resource then

		resource = "mod_"..plugin..".lua";

	end

	loader = loader or load_file;

	local content, err = loader(plugin.."/"..resource);

	if not content then content, err = loader(resource); end

	-- TODO add support for packed plugins

	if not content and loader == load_file then

		return load_resource(plugin, resource, load_from_datastore);

	end

	return content, err;

end

function store_resource(plugin, resource, content, metadata)

	if not resource then

		resource = "mod_"..plugin..".lua";

	end

	local store = { content };

	if metadata then

		for k,v in pairs(metadata) do

			store[k] = v;

		end

	end

end

function load_code(plugin, resource)

	local content, err = load_resource(plugin, resource);

	if not content then return content, err; end

	return loadstring(content, "@"..err);

end

return _M;