coronaserver = {}
function coronaserver.load()
	local file = io.open(minetest.get_worldpath() .. "/coronaserver", "r")
	if file then
		coronaserver.savedata = minetest.deserialize(file:read())
		file:close()
	else
		coronaserver.savedata = {}
	end
end
function coronaserver.save()
	local file = io.open(minetest.get_worldpath() .. "/coronaserver", "w")
	file:write(minetest.serialize(coronaserver.savedata))
	file:close()
end
coronaserver.load()

coronaserver.grantall = coronaserver.grantall or {}

function coronaserver.update_privs(player)
	local name = player:get_player_name()
	local privs = minetest.get_player_privs(name)
	for _, priv in pairs(coronaserver.grantall) do
		privs[priv] = true
	end
	minetest.set_player_privs(name, privs)
end

minetest.register_on_joinplayer(coronaserver.update_privs)

minetest.register_chatcommand("grantall", {
	description = "Grant a privilegue to players when they join",
	param = "<priv>",
	privs = {privs = true},
	func = function(name, param)
		coronaserver.grantall[#coronaserver.grantall] = param
		local players = minetest.get_connected_players()
		for _, player in pairs(players) do
			coronaserver.update_privs(player)
		end
	end
})