local Luan = require "luan:Luan.luan"
local error = Luan.error
local Parsers = require "luan:Parsers.luan"
local json_string = Parsers.json_string or error()
local Io = require "luan:Io.luan"
local Http = require "luan:http/Http.luan"
local Chat = require "site:/lib/Chat.luan"
local get_chat_by_id = Chat.get_by_id or error()
local User = require "site:/lib/User.luan"
local current_user = User.current or error()
local Db = require "site:/lib/Db.luan"
local run_in_transaction = Db.run_in_transaction or error()


return function()
	local chat = Http.request.parameters.chat or error()
	local name = Http.request.parameters.name or error()
	run_in_transaction( function()
		chat = get_chat_by_id(chat) or error()
		chat.user_id == current_user().id or error()
		chat.name = name
		chat.save()
	end )
	Io.stdout = Http.response.text_writer()
%>
	document.querySelector('[content] [name]').textContent = <%=json_string(name)%>;
<%
end