postOrder.swift

// 將資料上傳到google sheet上面
    func postOrder() {
        orderPreference()
        let orderItem = OrderInfo(orderer: nameTextField.text!,
                                  drinkName: order.drinkName!,
                                  sizeLevel: order.sizeLevel!.rawValue,
                                  iceLevel: order.iceLevel!.rawValue,
                                  sugarLevel: order.sugarLevel!.rawValue,
                                  extraToppings: order.extraToppings!.rawValue,
                                  totalPrice: "\(order.totalPrice!)")
        let postOrder = PostOrder(data: orderItem)
        let url = URL(string: "https://sheetdb.io/api/v1/ocn6qrzzdg1mn")
        var request = URLRequest(url: url!)
        request.httpMethod = "POST"
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        let encoder = JSONEncoder()
        if let data = try? encoder.encode(postOrder) {
            request.httpBody = data
            URLSession.shared.dataTask(with: request) { (data, response, error) in
                if let data = data,
                   let content = String(data: data, encoding: .utf8) {
                    print(content)
                    DispatchQueue.main.async {
                        self.goToOrderList()
                    }
                } else {
                    print(error!)
                }
            }.resume()
        }
    }