Main/resources/[tools]/thommie-nightvision/sv_main.lua

local QBCore = exports[Config.CoreName]:GetCoreObject()

-- Function to check if player has an item
local function HasItem(source, itemName)
    local items = exports["tgiann-inventory"]:GetPlayerItems(source)
    if not items then return false end
    
    for _, item in pairs(items) do
        if item.name == itemName then
            return true
        end
    end
    
    return false
end

-- Event for client to check if player has an item
RegisterNetEvent('nightvision:checkItem', function(itemName, callbackEvent)
    local src = source
    local hasItem = HasItem(src, itemName)
    TriggerClientEvent(callbackEvent, src, hasItem)
end)

-- Register usable items
QBCore.Functions.CreateUseableItem(Config.NVItem, function(source, item)
    if HasItem(source, item.name) then
        TriggerClientEvent('nightvision:toggleHelmet', source)
    end
end)

QBCore.Functions.CreateUseableItem(Config.ThermalItem, function(source, item)
    if HasItem(source, item.name) then
        TriggerClientEvent('nightvision:toggleGlasses', source, 'thermal')
    end
end)