added ability ro refill jerry cans

config.lua

@@ -5,6 +5,7 @@ Config.UseESX = true
 
 -- What should the price of jerry cans be?
 Config.JerryCanCost = 100
+Config.RefillCost = 50 -- If it is missing half of it capacity, this amount will be divided in half, and so on.
 
 -- Fuel decor - No need to change this, just leave it.
 Config.FuelDecor = "_FUEL_LEVEL"
@@ -29,11 +30,14 @@ Config.Strings = {
 	CancelFuelingPump = "Press ~g~E ~w~to cancel the fueling",
 	CancelFuelingJerryCan = "Press ~g~E ~w~to cancel the fueling",
 	NotEnoughCash = "Not enough cash",
-	AlreadyHasJerryCan = "You already have a jerry can"
+	RefillJerryCan = "Press ~g~E ~w~ to refill the jerry can for ",
+	NotEnoughCashJerryCan = "Not enough cash to refill jerry can",
+	JerryCanFull = "Jerry can is full"
 }
 
 if not Config.UseESX then
 	Config.Strings.PurchaseJerryCan = "Press ~g~E ~w~to grab a jerry can"
+	Config.Strings.RefillJerryCan = "Press ~g~E ~w~ to refill the jerry can"
 end
 
 Config.PumpModels = {

source/fuel_client.lua

@@ -306,7 +306,31 @@ Citizen.CreateThread(function()
 								currentCash = ESX.GetPlayerData().money
 							end
 						else
-							DrawText3Ds(stringCoords.x, stringCoords.y, stringCoords.z + 1.2, Config.Strings.AlreadyHasJerryCan)
+							if Config.UseESX then
+								local refillCost = Round(Config.RefillCost * (1 - GetAmmoInPedWeapon(ped, 883325847) / 4500))
+
+								if refillCost > 0 then
+									if currentCash >= refillCost then
+										DrawText3Ds(stringCoords.x, stringCoords.y, stringCoords.z + 1.2, Config.Strings.RefillJerryCan .. refillCost)
+
+										if IsControlJustReleased(0, 38) then
+											TriggerServerEvent('fuel:pay', refillCost)
+
+											SetPedAmmo(ped, 883325847, 4500)
+										end
+									else
+										DrawText3Ds(stringCoords.x, stringCoords.y, stringCoords.z + 1.2, Config.Strings.NotEnoughCashJerryCan)
+									end
+								else
+									DrawText3Ds(stringCoords.x, stringCoords.y, stringCoords.z + 1.2, Config.Strings.JerryCanFull)
+								end
+							else
+								DrawText3Ds(stringCoords.x, stringCoords.y, stringCoords.z + 1.2, Config.Strings.RefillJerryCan)
+
+								if IsControlJustReleased(0, 38) then
+									SetPedAmmo(ped, 883325847, 4500)
+								end
+							end
 						end
 					else
 						DrawText3Ds(stringCoords.x, stringCoords.y, stringCoords.z + 1.2, Config.Strings.NotEnoughCash)