local events = {} local timers = {} local cbEvent = ('__ox_cb_%s') RegisterNetEvent(cbEvent:format(cache.resource), function(key, ...) local cb = events[key] return cb and cb(...) end) ---@param event string ---@param delay number | false prevent the event from being called for the given time local function eventTimer(event, delay) if delay and type(delay) == 'number' and delay > 0 then local time = GetGameTimer() if (timers[event] or 0) > time then return false end timers[event] = time + delay end return true end ---@param _ any ---@param event string ---@param delay number | false ---@param cb function|false ---@param ... any ---@return ... local function triggerServerCallback(_, event, delay, cb, ...) if not eventTimer(event, delay) then return end local key repeat key = ('%s:%s'):format(event, math.random(0, 100000)) until not events[key] TriggerServerEvent(cbEvent:format(event), cache.resource, key, ...) ---@type promise | false local promise = not cb and promise.new() events[key] = function(response, ...) response = { response, ... } events[key] = nil if promise then return promise:resolve(response) end if cb then cb(table.unpack(response)) end end if promise then return table.unpack(Citizen.Await(promise)) end end ---@overload fun(event: string, delay: number | false, cb: function, ...) lib.callback = setmetatable({}, { __call = triggerServerCallback }) ---@param event string ---@param delay? number | false prevent the event from being called for the given time. ---Sends an event to the server and halts the current thread until a response is returned. function lib.callback.await(event, delay, ...) return triggerServerCallback(nil, event, delay, false, ...) end local function callbackResponse(success, result, ...) if not success then if result then return print(('^1SCRIPT ERROR: %s^0\n%s'):format(result , Citizen.InvokeNative(`FORMAT_STACK_TRACE` & 0xFFFFFFFF, nil, 0, Citizen.ResultAsString()) or '')) end return false end return result, ... end local pcall = pcall ---@param name string ---@param cb function --- Registers an event handler and callback function to respond to server requests. function lib.callback.register(name, cb) RegisterNetEvent(cbEvent:format(name), function(resource, key, ...) TriggerServerEvent(cbEvent:format(resource), key, callbackResponse(pcall(cb, ...))) end) end return lib.callback