esx_core/client/main.lua

ESX = nil
local menuOpen = false
local wasOpen = false

Citizen.CreateThread(function()
	while ESX == nil do
		TriggerEvent('esx:getSharedObject', function(obj) ESX = obj end)
		Citizen.Wait(0)
	end

	while ESX.GetPlayerData().job == nil do
		Citizen.Wait(100)
	end

	ESX.PlayerData = ESX.GetPlayerData()
end)

Citizen.CreateThread(function()
	while true do
		Citizen.Wait(0)
		local playerPed = PlayerPedId()
		local coords = GetEntityCoords(playerPed)

		if GetDistanceBetweenCoords(coords, Config.CircleZones.DrugDealer.coords, true) < 0.5 then
			if not menuOpen then
				ESX.ShowHelpNotification(_U('dealer_prompt'))

				if IsControlJustReleased(0, 38) then
					wasOpen = true
					OpenDrugShop()
				end
			else
				Citizen.Wait(500)
			end
		else
			if wasOpen then
				wasOpen = false
				ESX.UI.Menu.CloseAll()
			end

			Citizen.Wait(500)
		end
	end
end)

function OpenDrugShop()
	ESX.UI.Menu.CloseAll()
	local elements = {}
	menuOpen = true

	for k, v in pairs(ESX.GetPlayerData().inventory) do
		local price = Config.DrugDealerItems[v.name]

		if price and v.count > 0 then
			table.insert(elements, {
				label = ('%s - <span style="color:green;">%s</span>'):format(v.label, _U('dealer_item', ESX.Math.GroupDigits(price))),
				name = v.name,
				price = price,

				-- menu properties
				type = 'slider',
				value = 1,
				min = 1,
				max = v.count
			})
		end
	end

	ESX.UI.Menu.Open('default', GetCurrentResourceName(), 'drug_shop', {
		title    = _U('dealer_title'),
		align    = 'top-left',
		elements = elements
	}, function(data, menu)
		TriggerServerEvent('esx_drugs:sellDrug', data.current.name, data.current.value)
	end, function(data, menu)
		menu.close()
		menuOpen = false
	end)
end

AddEventHandler('onResourceStop', function(resource)
	if resource == GetCurrentResourceName() then
		if menuOpen then
			ESX.UI.Menu.CloseAll()
		end
	end
end)

function OpenBuyLicenseMenu(licenseName)
	menuOpen = true
	local license = Config.LicensePrices[licenseName]

	local elements = {
		{
			label = _U('license_no'),
			value = 'no'
		},

		{
			label = ('%s - <span style="color:green;">%s</span>'):format(license.label, _U('dealer_item', ESX.Math.GroupDigits(license.price))),
			value = licenseName,
			price = license.price,
			licenseName = license.label
		}
	}

	ESX.UI.Menu.Open('default', GetCurrentResourceName(), 'license_shop', {
		title    = _U('license_title'),
		align    = 'top-left',
		elements = elements
	}, function(data, menu)

		if data.current.value ~= 'no' then
			ESX.TriggerServerCallback('esx_drugs:buyLicense', function(boughtLicense)
				if boughtLicense then
					ESX.ShowNotification(_U('license_bought', data.current.licenseName, ESX.Math.GroupDigits(data.current.price)))
				else
					ESX.ShowNotification(_U('license_bought_fail', data.current.licenseName))
				end
			end, data.current.value)
		else
			menu.close()
		end

	end, function(data, menu)
		menu.close()
		menuOpen = false
	end)
end

function CreateBlipCircle(coords, text, radius, color, sprite)
	local blip = AddBlipForRadius(coords, radius)

	SetBlipHighDetail(blip, true)
	SetBlipColour(blip, 1)
	SetBlipAlpha (blip, 128)

	-- create a blip in the middle
	blip = AddBlipForCoord(coords)

	SetBlipHighDetail(blip, true)
	SetBlipSprite (blip, sprite)
	SetBlipScale  (blip, 1.0)
	SetBlipColour (blip, color)
	SetBlipAsShortRange(blip, true)

	BeginTextCommandSetBlipName("STRING")
	AddTextComponentString(text)
	EndTextCommandSetBlipName(blip)
end

Citizen.CreateThread(function()
	for k,zone in pairs(Config.CircleZones) do
		CreateBlipCircle(zone.coords, zone.name, zone.radius, zone.color, zone.sprite)
	end
end)