local pendingCallbacks = {}
local callbackCounter = 0
local resourceName = GetCurrentResourceName()
local responseEvent = ('devx_core:client:callback:%s'):format(resourceName)

function DevXTriggerCallback(name, payload, callback)
    assert(type(name) == 'string' and name:match('^[%w_%-]+:[%w_%-]+$'),
        'Callbackname ist ungültig.')
    assert(type(callback) == 'function', 'Clientcallback muss eine Funktion sein.')

    callbackCounter = callbackCounter + 1
    local requestId = ('%s:%s:%s'):format(resourceName, GetGameTimer(), callbackCounter)

    pendingCallbacks[requestId] = callback

    TriggerServerEvent(
        ('devx_core:server:callback:%s:%s'):format(resourceName, name),
        requestId,
        payload or {}
    )

    SetTimeout(22000, function()
        local pending = pendingCallbacks[requestId]
        if not pending then return end

        pendingCallbacks[requestId] = nil
        pending({
            ok = false,
            error = ('Keine Antwort auf %s. Prüfe die txAdmin- und F8-Konsole.'):format(name)
        })
    end)
end

RegisterNetEvent(responseEvent)
AddEventHandler(responseEvent, function(requestId, result)
    local callback = pendingCallbacks[requestId]
    if not callback then return end

    pendingCallbacks[requestId] = nil
    callback(result or { ok = false, error = 'Leere Serverantwort.' })
end)