Scripts/resources/[standalone]/ox_lib/imports/callback/client.lua
2024-12-29 21:02:43 +01:00

100 lines
2.4 KiB
Lua

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