local names = { "Romeo", "Juliet", "Mercutio", "Tybalt", "Benvolio" };

local devices = { "", "phone", "laptop", "tablet", "toaster", "fridge", "shoe" };

local users = {};

local filters = require "util.filters";

local id = require "util.id";

local dt = require "util.datetime";

local dm = require "util.datamanager";

local st = require "util.stanza";

local record_id = id.medium():lower();

local record_date = os.date("%Y%b%d"):lower();

local header_file = dm.getpath(record_id, "scansion", record_date, "scs", true);

local record_file = dm.getpath(record_id, "scansion", record_date, "log", true);

local head = io.open(header_file, "w");

local scan = io.open(record_file, "w+");

local function record(string)

	scan:write(string);

end

local function record_header(string)

	head:write(string);

end

local function record_object(class, name, props)

	head:write(("[%s] %s\n"):format(class, name));

	for k,v in pairs(props) do

		head:write(("\t%s: %s\n"):format(k, v));

	end

	head:write("\n");

end

local function record_event(session, event)

	record(session.scansion_id.." "..event.."\n\n");

end

local function record_stanza(stanza, session, verb)

	local flattened = tostring(stanza):gsub("><", ">\n\t<");

	-- TODO Proper prettyprinting with indentation

	record(session.scansion_id.." "..verb..":\n\t"..flattened.."\n\n");

end

local function record_stanza_in(stanza, session)

	if stanza.attr.xmlns == nil then

		local copy = st.clone(stanza);

		copy.attr.from = nil;

		record_stanza(copy, session, "sends")

	end

	return stanza;

end

local function record_stanza_out(stanza, session)

	if stanza.attr.xmlns == nil then

		if not (stanza.name == "iq" and stanza:get_child("bind", "urn:ietf:params:xml:ns:xmpp-bind")) then

			local copy = st.clone(stanza);

			if copy.attr.to == session.full_jid then

				copy.attr.to = nil;

			end

			record_stanza(copy, session, "receives");

		end

	end

	return stanza;

end

module:hook("resource-bind", function (event)

	local session = event.session;

	if not users[session.username] then

		users[session.username] = {

			character = table.remove(names, 1) or id.short();

			devices = {};

			n_devices = 0;

		};

	end

	local user = users[session.username];

	local device = user.devices[session.resource];

	if not device then

		user.n_devices = user.n_devices + 1;

		device = devices[user.n_devices] or ("device"..id.short());

		user.devices[session.resource] = device;

	end

	session.scansion_character = user.character;

	session.scansion_device = device;

	session.scansion_id = user.character..(device ~= "" and "'s "..device or device);

	record_object("Client", session.scansion_id, {

		jid = session.full_jid,

		password = "password",

	});

	module:log("info", "Connected: %s", session.scansion_id);

	record_event(session, "connects");

	filters.add_filter(session, "stanzas/in", record_stanza_in);

	filters.add_filter(session, "stanzas/out", record_stanza_out);

end);

module:hook("resource-unbind", function (event)

	local session = event.session;

	if session.scansion_id then

		record_event(session, "disconnects");

	end

end)

record_header("# mod_scansion_record on host '"..module.host.."' recording started "..dt.datetime().."\n\n");

record[[

-----

]]

module:hook_global("server-stopping", function ()

	record("# recording ended on "..dt.datetime().."\n");

	module:log("info", "Scansion recording available in %s", header_file);

end);

prosody.events.add_handler("server-cleanup", function ()

	scan:seek("set", 0);

	for line in scan:lines() do

		head:write(line, "\n");

	end

	scan:close();

	os.remove(record_file);

	head:close()

end);