import { POSOrder } from "./PosorderModel.js";
import { shippingAddress } from "../ShippingAddresses/ShippingAddressModel.js";

//generate unique order id
const generateOrderId = async () => {
  const currentYear = new Date().getFullYear();
  // Find the latest order to get the last serial number
  const latestOrder = await POSOrder.findOne({}, {}, { sort: { orderID: -1 } });
  let serialNumber = 1;

  if (latestOrder) {
    const lastYear = parseInt(latestOrder.orderID.substring(0, 4), 10);
    if (lastYear === currentYear) {
      // If the last order was in the current year, increment the serial number
      serialNumber = parseInt(latestOrder.orderID.substring(4), 10) + 1;
    }
  }
  // Pad the serial number with zeros and concatenate with the current year
  const paddedSerialNumber = serialNumber.toString().padStart(7, "0");
  const orderId = `${currentYear}${paddedSerialNumber}`;
  return orderId;
};

export const createOrderCheckout = async (req, res) => {
  try {
    const { address, cart, user, SalesType, paymentMode } =
      req.body;
// console.log(req.body)
    // Perform validation
    if (!address || !cart || cart.length === 0 || !SalesType || !user || !paymentMode) {
      return res.status(400).json({ message: "Invalid order data" });
    }

    // Retrieve shipping address from database
    const shippingInfo = await shippingAddress.findById(address);
    if (!shippingInfo) {
      return res.status(404).json({ message: "Shipping address not found" });
    }

    // Ensure that addressId is included in the shippingInfo object
    const { _id: addressId, ...restOfShippingInfo } = shippingInfo.toObject();

    // Calculate total amount based on the product_Subtotal of each product
    const totalAmount = cart.reduce(
      (acc, item) => acc + item.product_Subtotal,
      0
    );

    // Construct order items array
    const orderItems = cart.map((item) => ({
      product: item.product,
      name: item.name,
      price: item.price,
      quantity: item.quantity,
      product_Subtotal: item.total_amount,
      gst_amount: item.gst_amount,
      image: item.image,
      variant_Name: item.variant_Name,
    }));

    // Generate a unique order ID
    const orderId = await generateOrderId();

    // Create the order document
    const order = await POSOrder.create({
      orderID: orderId,
      total_amount: totalAmount,
      orderItems,
      shippingInfo: {
        addressId: addressId, // Include the addressId
        ...restOfShippingInfo, // Include other shipping information
      },
      user, // Assuming you have authenticated users
      SalesType,
      paymentMode,
    });

    return res.status(201).json({ success: true, order });
  } catch (error) {
    console.error("Error creating order:", error);
    return res
      .status(500)
      .json({ success: false, message: "Internal server error" });
  }
};