#!/usr/bin/env lua

-- 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.

--

require "erlparse";

package.path = package.path ..";../?.lua";

local serialize = require "util.serialization".serialize;

local st = require "util.stanza";

package.loaded["util.logger"] = {init = function() return function() end; end}

local dm = require "util.datamanager"

dm.set_data_path("data");

function build_stanza(tuple, stanza)

	if tuple[1] == "xmlelement" then

		local name = tuple[2];

		local attr = {};

		for _, a in ipairs(tuple[3]) do attr[a[1]] = a[2]; end

		local up;

		if stanza then stanza:tag(name, attr); up = true; else stanza = st.stanza(name, attr); end

		for _, a in ipairs(tuple[4]) do build_stanza(a, stanza); end

		if up then stanza:up(); else return stanza end

	elseif tuple[1] == "xmlcdata" then

		stanza:text(tuple[2]);

	else

		error("unknown element type: "..serialize(tuple));

	end

end

function build_time(tuple)

	local Megaseconds,Seconds,Microseconds = unpack(tuple);

	return Megaseconds * 1000000 + Seconds;

end

function vcard(node, host, stanza)

	local ret, err = dm.store(node, host, "vcard", st.preserialize(stanza));

	print("["..(err or "success").."] vCard: "..node.."@"..host);

end

function password(node, host, password)

	local ret, err = dm.store(node, host, "accounts", {password = password});

	print("["..(err or "success").."] accounts: "..node.."@"..host.." = "..password);

end

function roster(node, host, jid, item)

	local roster = dm.load(node, host, "roster") or {};

	roster[jid] = item;

	local ret, err = dm.store(node, host, "roster", roster);

	print("["..(err or "success").."] roster: " ..node.."@"..host.." - "..jid);

end

function roster_pending(node, host, jid)

	local roster = dm.load(node, host, "roster") or {};

	roster.pending = roster.pending or {};

	roster.pending[jid] = true;

	local ret, err = dm.store(node, host, "roster", roster);

	print("["..(err or "success").."] roster: " ..node.."@"..host.." - "..jid);

end

function private_storage(node, host, xmlns, stanza)

	local private = dm.load(node, host, "private") or {};

	private[stanza.name..":"..xmlns] = st.preserialize(stanza);

	local ret, err = dm.store(node, host, "private", private);

	print("["..(err or "success").."] private: " ..node.."@"..host.." - "..xmlns);

end

function offline_msg(node, host, t, stanza)

	stanza.attr.stamp = os.date("!%Y-%m-%dT%H:%M:%SZ", t);

	stanza.attr.stamp_legacy = os.date("!%Y%m%dT%H:%M:%S", t);

	local ret, err = dm.list_append(node, host, "offline", st.preserialize(stanza));

	print("["..(err or "success").."] offline: " ..node.."@"..host.." - "..os.date("!%Y-%m-%dT%H:%M:%SZ", t));

end

local filters = {

	passwd = function(tuple)

		password(tuple[2][1], tuple[2][2], tuple[3]);

	end;

	vcard = function(tuple)

		vcard(tuple[2][1], tuple[2][2], build_stanza(tuple[3]));

	end;

	roster = function(tuple)

		local node = tuple[3][1]; local host = tuple[3][2];

		local contact = (type(tuple[4][1]) == "table") and tuple[4][2] or tuple[4][1].."@"..tuple[4][2];

		local name = tuple[5]; local subscription = tuple[6];

		local ask = tuple[7]; local groups = tuple[8];

		if type(name) ~= type("") then name = nil; end

		if ask == "none" then ask = nil; elseif ask == "out" then ask = "subscribe" elseif ask == "in" then

			roster_pending(node, host, contact);

			return;

		else error(ask) end

		if subscription ~= "both" and subscription ~= "from" and subscription ~= "to" and subscription ~= "none" then error(subscription) end

		local item = {name = name, ask = ask, subscription = subscription, groups = {}};

		for _, g in ipairs(groups) do item.groups[g] = true; end

		roster(node, host, contact, item);

	end;

	private_storage = function(tuple)

		private_storage(tuple[2][1], tuple[2][2], tuple[2][3], build_stanza(tuple[3]));

	end;

	offline_msg = function(tuple)

		offline_msg(tuple[2][1], tuple[2][2], build_time(tuple[3]), build_stanza(tuple[7]));

	end;

	config = function(tuple)

		if tuple[2] == "hosts" then

			local output = io.output(); io.output("prosody.cfg.lua");

			io.write("-- Configuration imported from ejabberd --\n");

			io.write([[Host "*"

	modules_enabled = {

		"saslauth"; -- Authentication for clients and servers. Recommended if you want to log in.

		"legacyauth"; -- Legacy authentication. Only used by some old clients and bots.

		"roster"; -- Allow users to have a roster. Recommended ;)

		"register"; -- Allow users to register on this server using a client

		"tls"; -- Add support for secure TLS on c2s/s2s connections

		"vcard"; -- Allow users to set vCards

		"private"; -- Private XML storage (for room bookmarks, etc.)

		"version"; -- Replies to server version requests

		"dialback"; -- s2s dialback support

		"uptime";

		"disco";

		"time";

		"ping";

		--"selftests";

	};

]]);

			for _, h in ipairs(tuple[3]) do

				io.write("Host \"" .. h .. "\"\n");

			end

			io.output(output);

			print("prosody.cfg.lua created");

		end

	end;

};

local arg = ...;

local help = "/? -? ? /h -h /help -help --help";

if not arg or help:find(arg, 1, true) then

	print([[ejabberd db dump importer for Prosody

  Usage: ejabberd2prosody.lua filename.txt

The file can be generated from ejabberd using:

  sudo ./bin/ejabberdctl dump filename.txt

Note: The path of ejabberdctl depends on your ejabberd installation, and ejabberd needs to be running for ejabberdctl to work.]]);

	os.exit(1);

end

local count = 0;

local t = {};

for item in erlparse.parseFile(arg) do

	count = count + 1;

	local name = item[1];

	t[name] = (t[name] or 0) + 1;

	--print(count, serialize(item));

	if filters[name] then filters[name](item); end

end

--print(serialize(t));