server.lua

local Config = require 'config'
local timeoutVehs = {}

exports('useDevice', function(event, item, inventory, slot, data)
    if event == 'usingItem' then
        local src = inventory.id
        TriggerClientEvent('randol_vehhack:client:useItem', src)
    end
end)

local function handleFee(player, fee)
    if fee == 0 then return true end

    local balance = GetAccountBalance(player, 'bank') -- refer to bridge of your framework for custom currencies.
    if balance >= fee then
        RemoveMoney(player, 'bank', fee, 'Vehicle Maintenance')
        return true
    end

    return false
end

RegisterNetEvent('randol_vehhack:server:performAction', function(netId, action)
    local src = source
    local player = GetPlayer(src)
    if not player then return end

    local entity = NetworkGetEntityFromNetworkId(netId)
    if not DoesEntityExist(entity) then return end

    if timeoutVehs[entity] then
        return DoNotification(src, 'There is a cooldown between sabotages for this specific vehicle.', 'error')
    end

    if not hasItem(src, Config.ItemName) then return end

    local pos = GetEntityCoords(GetPlayerPed(src))
    local coords = GetEntityCoords(entity)

    if #(pos - coords) > Config.MaxDistance then return end

    local driver = GetPedInVehicleSeat(entity, -1)
    if driver == 0 then return end

    local owner = NetworkGetEntityOwner(entity)
    if owner <= 0 then return end -- I dont think I need this as it would only return -1 when the server owns it because nobody is in scope to take ownership iirc but i'll put it here regardless.

    local isPlayer = IsPedAPlayer(driver)
    local success = handleFee(player, isPlayer and Config.VehicleActions[action].playerFee or Config.VehicleActions[action].npcFee)
    if not success then
        return DoNotification(src, 'You do not have the funds for this action.', 'error')
    end

    TriggerClientEvent('randol_vehhack:client:performAction', owner, netId, action, isPlayer)

    timeoutVehs[entity] = true
    SetTimeout(Config.TimeBetweenVehicleActions, function()
        timeoutVehs[entity] = nil
    end)
end)