local registeredMenus = {}
local openMenu = nil

function lib.registerMenu(data, cb)
    if not data.id then return error('No menu id was provided.') end
    if not data.title then return error('No menu title was provided.') end
    if not data.options then return error('No menu options were provided.') end
    data.cb = cb
    registeredMenus[data.id] = data
end

function lib.showMenu(id)
    if not registeredMenus[id] then return error('No menu of such id found.') end
    local data = registeredMenus[id]
    openMenu = id
    SetNuiFocus(true, false)
    SendNUIMessage({
        action = 'setMenu',
        data = {
            position = data.position,
            title = data.title,
            items = data.options
        }
    })
end

function lib.hideMenu(onExit)
	if onExit and registeredMenus[openMenu].onClose then registeredMenus[openMenu].onClose() end
	SetNuiFocus(false, false)
	SendNUIMessage({
		action = 'closeMenu'
	})
end

function lib.setMenuOptions(id, options, index)
	if index then
		registeredMenus[id].options[index] = options
	else
		registeredMenus[id].options = options
 	end
end

function lib.getOpenMenu() return openMenu end

RegisterNUICallback('confirmSelected', function(data, cb)
    cb(1)
    local selected = {data[1] + 1, data[2] and data[2] + 1} -- data = [selected, scrollIndex]
    local menu = registeredMenus[openMenu]
    if menu.options[selected[1]].close ~= false then SetNuiFocus(false, false) end
    local args = menu.options[selected[1]].args
	registeredMenus[openMenu].cb(selected[1], selected[2], args)
end)

RegisterNUICallback('changeIndex', function(data, cb)
	cb(1)
	if not registeredMenus[openMenu].onSideScroll then return end
	local selected = {data[1] + 1, data[2] and data[2] + 1} -- data = [selected, scrollIndex]
	local args = registeredMenus[openMenu].options[selected[1]].args
	registeredMenus[openMenu].onSideScroll(selected[1], selected[2], args)
end)

RegisterNUICallback('changeSelected', function(data, cb)
    cb(1)
    if not registeredMenus[openMenu].onSelected then return end
    local selected = {data[1] + 1, data[2] and data[2] + 1} -- data = [selected, scrollIndex]
    local args = registeredMenus[openMenu].options[selected[1]].args
	registeredMenus[openMenu].onSelected(selected[1], selected[2], args)
end)

RegisterNUICallback('closeMenu', function(data, cb)
    cb(1)
    SetNuiFocus(false, false)
    if registeredMenus[openMenu].onClose then return registeredMenus[openMenu].onClose() end
end)