const createOrder = [
  asyncHandler(async (req, res) => {
    const {
      discountCode,
    } = req.body;

    const userID = req.user.id;

    const userData = await User.findById(req.user.id)
    if (userData.cart.length <= 0) {
      res.status(400)
      throw new Error("سبد خرید خالی است")
    }
    const shippingAddress = userData.state + " - " + userData.city + " - " + userData.address + " - " + userData.postCode + " - " + userData.phoneNumber
    const orderDate = new Date()
    const data = {
      userID,
      totalAmount: 0,
      shippingAddress,
      orderDate,
      status: "Pending",
    };

    let myPromise = new Promise(async function (myResolve, myReject) {
      try {
        let products = []
        // Use Promise.all to wait for all asynchronous operations to complete
        await Promise.all(
          userData.cart.map(async (product) => {
            const pd = await Product.findById(product.product);
            if (pd.specialPrice) {
              data.totalAmount = pd.specialPrice * product.quantity + data.totalAmount;
            } else {
              data.totalAmount = pd.price * product.quantity + data.totalAmount;
            }
            products.push({ product: pd.id, quantity: product.quantity, price: pd.price, specialPrice: pd.specialPrice })
          })
        );

        data.products = products
        // Resolve the main promise after all asynchronous operations are finished
        myResolve(data);
      } catch (error) {
        // Reject the promise if an error occurs
        myReject(error);
      }
    });


    if (discountCode) {
      const discount = await Discount.findOne({ discountCode });
      if (!discount) {
        res.status(404);
        throw new Error(_sr.fa.not_found.item_id);
      }
      if (discount.expirationDate <= Date.now()) {
        res.status(404);
        throw new Error("این کد منقضی شده");
      }
      if (discount.use >= usageLimit) {
        res.status(404);
        throw new Error("این کد منقضی شده");
      }
      if (discount.usedBy.length > 0) {
        let thisUser = true;
        discount.usedBy.forEach((user) => {
          if (user === userID) {
            thisUser = false;
          }
        });

        if (thisUser) {
          res.status(404);
          throw new Error("این کد منقضی شده");
        }
      }
      if (discount.applicableProducts.length > 0) {
        let thisProducts = true;
        discount.applicableProducts.forEach((product) => {
          userData.cart.forEach((productX) => {
            if (product === productX) {
              thisProducts = false;
            }
          });
        });
        if (thisProducts) {
          res.status(404);
          throw new Error("این کد منقضی شده");
        }
      }
      switch (discount.type) {
        case "f":
          data.priceWithDiscount = data.totalAmount - discount.amount;

          break;

        case "p":
          const darsad = discount.amount / 100;

          const manfi = data.totalAmount * darsad;

          data.priceWithDiscount = data.totalAmount - manfi;

          break;
      }
    } else {
      data.priceWithDiscount = data.totalAmount
    }
    
    var order
    myPromise.then(async () => {
      order = await Order.create(data);
      let findOrder = await Order.findById(order._id).populate('products.product', ' title uid').populate('userID', sp.select.userCustom)

      userData.cart.map(async (productData) => {
        var pusher = productData
        pusher.status = "Pending"
        pusher.date = Date.now()
        pusher.orderDate = Date.now()
        const product = await Product.findById(productData.product)
        pusher.price = product?.specialPrice || product.price
        await Product.findByIdAndUpdate(
          productData.product, {
          order: product?.order + 1 || 1
        }
        )

        await Shop.findByIdAndUpdate(
          product.shopID,
          {
            $push: { pendingProductss: pusher },
          },
          { new: true }
        );


      });

      const emailInfo = await Email.findOne({ status: data.status });
      const smsInfo = await Sms.findOne({ status: data.status });

      if (emailInfo.send) {
        // email(userData.email, "Asan Market Order", emailInfo.body, emailInfo.html);
      }
      if (smsInfo.send) {
        await sms(userData.phoneNumber, `سفارش شما با ایدیه ${findOrder?._id} در آسان مارکت ثبت شد و در انتظار پرداخت میباشد`);
      }

      userData.cart = []
      userData.orders.push(order)
      userData.save()
      res.status(201).json(findOrder);
    })


  })
]