The_End/mods/gameplay_mechanics/mob_spawning_director/commands.lua

local S = minetest.get_translator("mob_spawning_director")

minetest.register_chatcommand("mobspawning",
	{
		params = "[on|off]",
		privs = {server = true},
		description = S("Toggles mob spawning on or off"),
		func = function(name, param)
			
			local on = mob_spawning_director.get_enablation_state()
			
			if param == "on" and not on
			then
				mob_spawning_director.enable()
				return true, S("Enabled mob spawning")
				
			elseif param == "off" and on
			then
				mob_spawning_director.disable()
				return true, S("Disabled mob spawning")
				
			elseif (param == "on" and on) or (param == "off" and not on)
			then
				return true, S("Mob spawning was already " .. (on and "enabled" or "disabled"))
			else
				return true, S("Mob spawning is " .. (on and "enabled" or "disabled"))
			end
		end,
	})