-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

-- Copyright (C) 2018 Emmanuel Gil Peyrot

--

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

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

--

local st = require "util.stanza"

local dm_load = require "util.datamanager".load

local jid_prep = require "util.jid".prep;

local rooms;

local members;

local bookmarks_file;

module:add_feature("jabber:iq:private");

local function inject_bookmarks(username, host, data)

	local jid = username.."@"..host;

	data:reset();

	if members[jid] then

		for _, room in ipairs(members[jid]) do

			data:tag("conference", {

				name = room;

				jid = room;

				autojoin = "1";

			});

			local nick = rooms[room][jid];

			if nick then

				data:tag("nick"):text(nick):up();

			end

			data:up();

		end

	end

	return data;

end

module:hook("iq-get/self/jabber:iq:private:query", function(event)

	local origin, stanza = event.origin, event.stanza;

	local query = stanza.tags[1];

	if #query.tags == 1 then

		local tag = query.tags[1];

		local key = tag.name..":"..tag.attr.xmlns;

		if key ~= "storage:storage:bookmarks" then

			return;

		end

		local data, err = dm_load(origin.username, origin.host, "private");

		if err then

			origin.send(st.error_reply(stanza, "wait", "internal-server-error"));

			return true;

		end

		local data = data and data[key];

		if not data then

			data = st.stanza("storage", { xmlns = "storage:bookmarks" });

		end

		data = st.deserialize(data);

		data = inject_bookmarks(origin.username, origin.host, data);

		origin.send(st.reply(stanza):tag("query", {xmlns = "jabber:iq:private"})

			:add_child(data));

		return true;

	end

end, 1);

function module.load()

	bookmarks_file = module:get_option_string("group_bookmarks_file");

	rooms = { default = {} };

	members = { };

	if not bookmarks_file then

		module:log("error", "Please specify group_bookmarks_file in your configuration");

		return;

	end

	local curr_room;

	for line in io.lines(bookmarks_file) do

		if line:match("^%s*%[.-%]%s*$") then

			curr_room = line:match("^%s*%[(.-)%]%s*$");

			if curr_room:match("^%+") then

				curr_room = curr_room:gsub("^%+", "");

				if not members[false] then

					members[false] = {};

				end

				members[false][#members[false]+1] = curr_room; -- Is a public group

			end

			module:log("debug", "New group: %s", tostring(curr_room));

			rooms[curr_room] = rooms[curr_room] or {};

		elseif curr_room then

			-- Add JID

			local entryjid, name = line:match("([^=]*)=?(.*)");

			module:log("debug", "entryjid = '%s', name = '%s'", entryjid, name);

			local jid = jid_prep(entryjid:match("%S+"));

			if jid then

				module:log("debug", "New member of %s: %s", tostring(curr_room), tostring(jid));

				rooms[curr_room][jid] = name or false;

				members[jid] = members[jid] or {};

				members[jid][#members[jid]+1] = curr_room;

			end

		end

	end

	module:log("info", "Group bookmarks loaded successfully");

end