import sendEmail from "../../Utils/sendEmail.js";
import RetailDistributor from "../RetailDistributor/RetailDistributorModel.js";
import { InvoiceRd } from "./invoiceModalRD.js";
import { RdOrder } from "./rdOrderModal.js";

// Controller to create a new order by RD
export const createOrderRD = async (req, res) => {
  try {
    const {
      paymentMode,
      shipTo,
      billTo,
      orderItems,
      subtotal,
      gstTotal,
      grandTotal,
    } = req.body;

    const rdId = req.user._id;
    // Fetch the Retail Distributor (RD) to find the associated Principal Distributor (PD)
    const rd = await RetailDistributor.findById(rdId).populate(
      "principal_distributer"
    );

    if (!rd) {
      return res.status(404).json({ message: "Retail Distributor not found" });
    }

    const pdId = rd.principal_distributer._id; // Get the associated PD

    // Create the order
    const newOrder = new RdOrder({
      paymentMode,
      shipTo,
      billTo,
      orderItem: orderItems.map((item) => ({
        productId: item._id,
        SKU: item.SKU,
        name: item.name,
        categoryName: item.category.categoryName, // Store category name

        brandName: item.brand.brandName, // Store brand name

        price: item.price,
        GST: item.GST,
        HSN_Code: item.HSN_Code,
        description: item.description,
        image: item.image,
        quantity: item.count,
        remainingQuantity: item.count,
      })),
      subtotal,
      gstTotal,
      grandTotal,
      addedBy: rdId, // The RD who placed the order (Retail Distributor)
      pd: pdId, // Reference to the PD associated with the RD
    });

    await newOrder.save();

    res
      .status(201)
      .json({ message: "Order placed successfully", order: newOrder });
  } catch (error) {
    res.status(500).json({ message: "Server error", error });
  }
};

export const getPlacedOrdersForRD = async (req, res) => {
  try {
    const rdId = req.user?._id; // Assuming the Retail Distributor's ID is obtained from the authenticated request
    if (!rdId) {
      return res.status(401).json({ message: "Unauthorized access" });
    }

    // Extract page and limit from query parameters, with default values
    const page = parseInt(req.query.page, 10) || 1;
    const limit = parseInt(req.query.limit, 10) || 5;

    // Calculate how many documents to skip for pagination
    const skip = (page - 1) * limit;

    // Fetch total count of orders for this RD (for pagination purposes)
    const totalOrders = await RdOrder.countDocuments({ addedBy: rdId });

    // Fetch orders for the logged-in RD
    const placedOrders = await RdOrder.find({ addedBy: rdId })
      .sort({ createdAt: -1 }) // Sort by creation date, newest first
      .skip(skip) // Skip documents for pagination
      .limit(limit); // Limit number of documents returned

    if (!placedOrders || placedOrders.length === 0) {
      return res
        .status(404)
        .json({ message: "No orders found for this Retail Distributor" });
    }

    // Send the paginated order list and total count of orders
    res.status(200).json({ placedOrders, totalOrders });
  } catch (error) {
    console.error(error);
    res.status(500).json({ message: "Server error", error });
  }
};
export const getSinglePlacedOrderForRD = async (req, res) => {
  try {
    const rdId = req.user?._id;
    if (!rdId) {
      return res.status(401).json({ message: "Unauthorized access" });
    } // Assuming the Retail Distributor's ID is obtained from the authenticated request
    const orderId = req.params.id; // Assuming the order ID is passed in the URL as a parameter

    if (!rdId) {
      return res.status(401).json({ message: "Unauthorized access" });
    }

    if (!orderId) {
      return res.status(400).json({ message: "Order ID is required" });
    }

    // Fetch the specific order for the logged-in RD
    const order = await RdOrder.findOne({ _id: orderId, addedBy: rdId });

    if (!order) {
      return res
        .status(404)
        .json({ message: "Order not found for this Retail Distributor" });
    }

    // Send the single order document
    res.status(200).json({ singleOrder: order });
  } catch (error) {
    console.error(error);
    res.status(500).json({ message: "Server error", error });
  }
};

export const getPlacedOrdersForPD = async (req, res) => {
  try {
    const pdId = req.user?._id;
    if (!pdId) {
      return res.status(401).json({ return_message: "Unauthorized access " });
    }
    // Extract page and limit from query parameters
    const page = parseInt(req.query.page, 10) || 1;
    const limit = parseInt(req.query.limit, 10) || 5;

    // Calculate the number of documents to skip
    const skip = (page - 1) * limit;
    const totalOrders = await RdOrder.countDocuments({ pd: pdId });

    // Fetch all orders where the PD is associated with the order
    const plcaedOrders = await RdOrder.find({ pd: pdId })
      .sort({ createdAt: -1 })
      .skip(skip)
      .limit(limit);

    if (!plcaedOrders || plcaedOrders.length === 0) {
      return res
        .status(404)
        .json({ message: "No orders found for this Principal Distributor" });
    }

    res.status(200).json({ plcaedOrders, totalOrders });
  } catch (error) {
    console.error(error);
    res.status(500).json({ message: "Server error", error });
  }
};
export const getSinglePlacedOrderForPD = async (req, res) => {
  try {
    const pdId = req.user?._id; // Assuming the Principal Distributor's ID is obtained from the authenticated request
    const orderId = req.params.id; // Assuming the order ID is passed in the URL as a parameter

    if (!pdId) {
      return res.status(401).json({ message: "Unauthorized access" });
    }

    if (!orderId) {
      return res.status(400).json({ message: "Order ID is required" });
    }

    // Fetch the specific order for the logged-in PD
    const order = await RdOrder.findOne({ _id: orderId, pd: pdId })
      .populate({ path: "addedBy" })
      .populate({ path: "invoices" });

    if (!order) {
      return res
        .status(404)
        .json({ message: "Order not found for this Principal Distributor" });
    }

    // Send the single order document
    res.status(200).json({ singleOrder: order });
  } catch (error) {
    console.error(error);
    res.status(500).json({ message: "Server error", error });
  }
};

export const getNewOrders = async (req, res) => {
  try {
    const pdId = req.user?._id;
    if (!pdId) {
      return res.status(401).json({ return_message: "Unauthorized access " });
    }
    // Extract page and limit from query parameters
    const page = parseInt(req.query.page, 10) || 1;
    const limit = parseInt(req.query.limit, 10) || 5;

    // Calculate the number of documents to skip
    const skip = (page - 1) * limit;
    const totalOrders = await RdOrder.countDocuments({
      pd: pdId,
      status: "new",
    });

    // Fetch all orders where the PD is associated with the order
    const plcaedOrders = await RdOrder.find({ pd: pdId, status: "new" })
      .sort({ createdAt: -1 })
      .skip(skip)
      .limit(limit);

    if (!plcaedOrders || plcaedOrders.length === 0) {
      return res
        .status(404)
        .json({ message: "No orders found for this Principal Distributor" });
    }

    res.status(200).json({ plcaedOrders, totalOrders });
  } catch (error) {
    console.error(error);
    res.status(500).json({ message: "Server error", error });
  }
};
export const getPendignOrders = async (req, res) => {
  try {
    const pdId = req.user?._id;
    if (!pdId) {
      return res.status(401).json({ return_message: "Unauthorized access " });
    }
    // Extract page and limit from query parameters
    const page = parseInt(req.query.page, 10) || 1;
    const limit = parseInt(req.query.limit, 10) || 5;

    // Calculate the number of documents to skip
    const skip = (page - 1) * limit;
    const totalOrders = await RdOrder.countDocuments({
      pd: pdId,
      status: "new",
    });

    // Fetch all orders where the PD is associated with the order
    const plcaedOrders = await RdOrder.find({ pd: pdId, status: "pending" })
      .sort({ createdAt: -1 })
      .skip(skip)
      .limit(limit);

    if (!plcaedOrders || plcaedOrders.length === 0) {
      return res
        .status(404)
        .json({ message: "No orders found for this Principal Distributor" });
    }

    res.status(200).json({ plcaedOrders, totalOrders });
  } catch (error) {
    console.error(error);
    res.status(500).json({ message: "Server error", error });
  }
};
export const getCancelledOrders = async (req, res) => {
  try {
    const pdId = req.user?._id;
    if (!pdId) {
      return res.status(401).json({ return_message: "Unauthorized access " });
    }
    // Extract page and limit from query parameters
    const page = parseInt(req.query.page, 10) || 1;
    const limit = parseInt(req.query.limit, 10) || 5;

    // Calculate the number of documents to skip
    const skip = (page - 1) * limit;
    const totalOrders = await RdOrder.countDocuments({
      pd: pdId,
      status: "new",
    });

    // Fetch all orders where the PD is associated with the order
    const plcaedOrders = await RdOrder.find({ pd: pdId, status: "cancelled" })
      .sort({ createdAt: -1 })
      .skip(skip)
      .limit(limit);

    if (!plcaedOrders || plcaedOrders.length === 0) {
      return res
        .status(404)
        .json({ message: "No orders found for this Principal Distributor" });
    }

    res.status(200).json({ plcaedOrders, totalOrders });
  } catch (error) {
    console.error(error);
    res.status(500).json({ message: "Server error", error });
  }
};

export const processOrder = async (req, res) => {
  try {
    const { orderId, invoiceItems } = req.body;

    if (!orderId || !invoiceItems || !Array.isArray(invoiceItems)) {
      return res
        .status(400)
        .json({ error: "Missing required fields or invalid data" });
    }

    // Find the order by ID
    const order = await RdOrder.findById(orderId).populate("addedBy");

    if (!order) {
      return res.status(404).json({ error: "Order not found" });
    }

    // Validate quantities
    const exceededItems = [];

    // Check each item in invoiceItems for quantity limits
    for (const item of invoiceItems) {
      const orderItem = order.orderItem.find(
        (i) => i.productId.toString() === item.productId.toString()
      );

      // If processquantity exceeds remainingQuantity, add the item name to exceededItems
      if (orderItem && item.processquantity > orderItem.remainingQuantity) {
        exceededItems.push(item.name);
      }
    }

    // If there are any exceeded items, return an error with their names
    if (exceededItems.length > 0) {
      return res.status(400).json({
        error: `The following items have more quantity than remaining in the order: ${exceededItems.join(
          ", "
        )}`,
      });
    }

    // Continue with the rest of the logic if no quantity limits are exceeded

    // Generate unique invoice number
    const existingInvoices = await InvoiceRd.find({ orderId });
    const invoiceNumber = existingInvoices.length + 1;
    const invoiceId = `ch/${order.uniqueId}/${invoiceItems.length}/${invoiceNumber}`;

    // Calculate subtotal, gstTotal, and invoiceAmount for processed items
    let subtotal = 0;
    let gstTotal = 0;
    let invoiceAmount = 0;

    invoiceItems.forEach((item) => {
      const itemSubtotal = item.price * item.processquantity;
      const itemGST = ((item.price * item.GST) / 100) * item.processquantity;

      subtotal += itemSubtotal;
      gstTotal += itemGST;
      invoiceAmount += itemSubtotal + itemGST;
    });

    // Create a new invoice
    const newInvoice = new InvoiceRd({
      invoiceId,
      orderId,
      items: invoiceItems,
      subtotal,
      gstTotal,
      invoiceAmount,
    });

    // Save the invoice
    const savedInvoice = await newInvoice.save();

    // Update the order's order items with the remaining quantity
    let allItemsProcessed = true; // Flag to check if all items are processed

    order.orderItem.forEach((item) => {
      const invoicedItem = invoiceItems.find(
        (i) => i.productId.toString() === item.productId.toString()
      );

      // If the item was invoiced, update the remaining quantity
      if (invoicedItem) {
        // Deduct the processed quantity from remaining quantity
        item.remainingQuantity -= invoicedItem.processquantity;

        // Ensure remaining quantity does not go negative
        if (item.remainingQuantity < 0) {
          item.remainingQuantity = 0;
        }
      }

      // Check if the remaining quantity is greater than 0, even for items not invoiced
      if (item.remainingQuantity > 0) {
        allItemsProcessed = false;
      }
    });

    // Calculate total amount for pending items
    let pendingTotalAmount = 0;
    order.orderItem.forEach((item) => {
      if (item.remainingQuantity > 0) {
        const itemPendingSubtotal = item.price * item.remainingQuantity;
        const itemPendingGST =
          ((item.price * item.GST) / 100) * item.remainingQuantity;
        pendingTotalAmount += itemPendingSubtotal + itemPendingGST;
      }
    });

    // Only update order status if all items have been fully processed
    if (allItemsProcessed) {
      order.status = "processing"; // All items are fully processed
    } else {
      order.status = "pending"; // There are still remaining quantities
    }

    // Add the invoice to the order
    order.invoices.push(savedInvoice._id);

    // Save the updated order
    await order.save();

    // Prepare the email content
    const processedItems = invoiceItems
      .map(
        (item, index) => `
      <tr>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
          index + 1
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
          item.name
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">
          ${
            item.image && item.image.length > 0
              ? `<img src="${item.image[0]?.url}" alt="${item.name}" style="max-width: 40px; height: auto;">`
              : "No Image"
          }
        </td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
          item.processquantity
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
          item.price
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
          (item.GST * item.price) / 100
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
          (item.price + (item.GST * item.price) / 100) * item.processquantity
        }</td>
      </tr>
    `
      )
      .join("");

    const pendingItems = order.orderItem
      .filter((item) => item.remainingQuantity > 0)
      .map(
        (item, index) => `
      <tr>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
          index + 1
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
          item.name
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">
          ${
            item.image && item.image.length > 0
              ? `<img src="${item.image[0]?.url}" alt="${item.name}" style="max-width: 40px; height: auto;">`
              : "No Image"
          }
        </td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
          item.remainingQuantity
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
          item.price
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
          (item.GST * item.price) / 100
        }</td>
        <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
          (item.price + (item.GST * item.price) / 100) * item.remainingQuantity
        }</td>
      </tr>
    `
      )
      .join("");

    // Dynamic email subject and message based on the order status
    const emailSubject = allItemsProcessed
      ? `Your Order #${order.uniqueId} is in Processing!`
      : `Your Order #${order.uniqueId} is Partially Processed!`;

    const emailMessage = allItemsProcessed
      ? `
          <h3>Exciting news! Your order #${order.uniqueId} has entered the processing phase. We're working hard to ensure everything is perfect for you.</h3>
          <p>Your invoice ID is: <strong>${savedInvoice.invoiceId}</strong></p>
        `
      : `
          <h3>Good news! Some items of your order #${order.uniqueId} have been processed. The remaining items will be processed soon.</h3>
          <p>Your invoice ID is: <strong>${savedInvoice.invoiceId}</strong></p>
        `;

    await sendEmail({
      to: order.addedBy.email,
      from: process.env.SEND_EMAIL_FROM,
      subject: emailSubject,
      html: `
        <div style="font-family: Arial, sans-serif; color: #333;">
          ${emailMessage}
          <strong style="color: #1b03a3; font-size: 16px;">Hi ${
            order.addedBy.name
          },</strong>
          <h4 style="color: #333;">Order Status: ${
            order.status.charAt(0).toUpperCase() + order.status.slice(1)
          }</h4>

          <h4 style="color: #333;">Processed Items:</h4>
          <table style="border-collapse: collapse; width: 100%;">
            <thead>
              <tr>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">S No.</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">Product Name</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">Image</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">Quantity</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">Price</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">GST Amount</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">SubTotal</th>
              </tr>
            </thead>
            <tbody>
              ${processedItems}
              <tr>
                <th colspan="6" style="border: 1px solid #555; padding: 2px; text-align: right;">Total Amount:</th>
                <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${savedInvoice.invoiceAmount.toFixed(
                  2
                )}</td>
              </tr>
            </tbody>
          </table>

          ${
            pendingItems.length > 0
              ? `
            <h4 style="color: #333;">Pending Items:</h4>
            <table style="border-collapse: collapse; width: 100%;">
              <thead>
                <tr>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">S No.</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">Product Name</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">Image</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">Quantity</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">Price</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">GST Amount</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">SubTotal</th>
                </tr>
              </thead>
              <tbody>
                ${pendingItems}
                <tr>
                  <th colspan="6" style="border: 1px solid #555; padding: 2px; text-align: right;">Pending Amount:</th>
                  <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${pendingTotalAmount.toFixed(
                    2
                  )}</td>
                </tr>
              </tbody>
            </table>
          `
              : ""
          }
          <br/>
          <h5 style="color: #333; font-family: Arial, sans-serif;">If you have any concerns or further questions, please feel free to reply to this email.</h5>
          <br/>
          <span style="color: #555; font-size: 13px;">Best regards,</span><br/>
          <span style="color: #555; font-size: 13px;">Team Cheminova</span>
        </div>
      `,
    });

    res.status(200).json({
      message: "Order processed and invoice created successfully",
      invoiceId: savedInvoice.invoiceId,
    });
  } catch (error) {
    res
      .status(500)
      .json({ error: "An error occurred while processing the order" });
  }
};

// cancell order

export const cancelOrderController = async (req, res) => {
  // const { cancellationReason, id: _id } = req.bodyconst
  const pdId = req.user?._id;
  const cancellationReason = req.body.cancellationReason;
  const _id = req.params.id;
  try {
    // Find the order by ID
    const order = await RdOrder.findOne({ _id, pd: pdId })
      .populate("invoices")
      .populate("addedBy");

    if (!order) {
      return res.status(404).json({ message: "Order not found" });
    }

    // Update the order status to 'cancelled'
    order.status = "cancelled";
    order.iscancelled = true;
    order.order_Cancelled_Reason =
      cancellationReason || "No specific reason provided.";
    await order.save();

    if (order.invoices.length === 0) {
      // If no invoices are associated with the order
      await sendEmail({
        to: `${order.addedBy.email}`, // Change to your recipient
        from: `${process.env.SEND_EMAIL_FROM}`, // Change to your verified sender
        subject: `Order #${order.uniqueId} Cancellation Confirmation`,
        html: `
          <strong style="color: #1b03a3; font-size: 16px">Hi ${order.addedBy.name},</strong>
          <h3 style="color: #333; font-family: Arial, sans-serif;">We regret to inform you that your order #${order.uniqueId} has been fully cancelled.</h3>
          <h4 style="color: #333; font-family: Arial, sans-serif;">Cancellation Reason: ${order.order_Cancelled_Reason}</h4>
          <h5 style="color: #333; font-family: Arial, sans-serif;">If you have any concerns or further questions, please feel free to reply to this email.</h5>
          <br/>
          <span style="color: #555; font-size: 13px;">Best regards,</span><br/>
          <span style="color: #555; font-size: 13px;">Team Cheminova</span>
        `,
      });
    } else {
      // If invoices are present
      const invoices = await InvoiceRd.find({ _id: { $in: order.invoices } });

      // Collect all invoice data
      const invoiceDetails = invoices.map((invoice) => {
        let subtotal = 0;
        let gstTotal = 0;
        let totalAmount = 0;

        const processedItems = invoice.items
          .map((item) => {
            const itemSubtotal = item.price * item.processquantity;
            const itemGST =
              ((item.price * item.GST) / 100) * item.processquantity;

            subtotal += itemSubtotal;
            gstTotal += itemGST;
            totalAmount += itemSubtotal + itemGST;

            const itemImage =
              item.image && Array.isArray(item.image) ? item.image[0]?.url : "";

            return `
            <tr>
              <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
                item.SKU
              }</td>
              <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
                item.name
              }</td>
              <td style="border: 1px solid #555; padding: 2px; text-align: center;"><img src="${itemImage}" alt="${
              item.name
            }" style="max-width: 40px; height: auto;"></td>
              <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
                item.processquantity
              }</td>
              <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
                item.price
              }</td>
              <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
                (item.price * item.GST) / 100
              }</td>
              <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
                itemSubtotal + itemGST
              }</td>
            </tr>
          `;
          })
          .join("");

        return {
          invoiceId: invoice.invoiceId,
          processedItems,
          totalAmount,
        };
      });

      // Collect all delivered and remaining items
      let cancelItems = "";
      let totalCancelAmount = 0;

      if (Array.isArray(order.orderItem)) {
        order.orderItem.forEach((item) => {
          if (item.remainingQuantity > 0) {
            const itemSubtotal = item.price * item.remainingQuantity;
            const itemGST =
              ((item.price * item.GST) / 100) * item.remainingQuantity;

            totalCancelAmount += itemSubtotal + itemGST;

            const itemImage =
              item.image && Array.isArray(item.image) ? item.image[0]?.url : "";

            cancelItems += `
              <tr>
                <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
                  item.SKU
                }</td>
                <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
                  item.name
                }</td>
                <td style="border: 1px solid #555; padding: 2px; text-align: center;"><img src="${itemImage}" alt="${
              item.name
            }" style="max-width: 40px; height: auto;"></td>
                <td style="border: 1px solid #555; padding: 2px; text-align: center;">${
                  item.remainingQuantity
                }</td>
                <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
                  item.price
                }</td>
                <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
                  (item.price * item.GST) / 100
                }</td>
                <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${
                  itemSubtotal + itemGST
                }</td>
              </tr>
            `;
          }
        });
      }
      await sendEmail({
        to: `${order.addedBy.email}`, // Change to your recipient
        from: `${process.env.SEND_EMAIL_FROM}`, // Change to your verified sender
        subject: `Order #${order.uniqueId} is Partially Cancelled!`,
        html: `
          <strong style="color: #1b03a3; font-size: 16px">Hi ${
            order.addedBy.name
          },</strong>
          <h3 style="color: #333; font-family: Arial, sans-serif;">We would like to inform you that your order #${
            order.uniqueId
          } has been partially cancelled.</h3>
          <h4 style="color: #333; font-family: Arial, sans-serif;">Cancellation Reason: ${
            order.order_Cancelled_Reason
          }</h4>

          <h4 style="color: #333; font-family: Arial, sans-serif;">Delivered Items:</h4>
          ${invoiceDetails
            .map(
              (details) => `
            <h5 style="color: #333; font-family: Arial, sans-serif;">Invoice ID: ${
              details.invoiceId
            }</h5>
            <table style="border-collapse: collapse; width: 100%;">
              <thead>
                <tr>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">S No.</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">Product Name</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">Image</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">Quantity</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">Price</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">GST Amount</th>
                  <th style="border: 1px solid #555; padding: 2px; text-align: center;">SubTotal</th>
                </tr>
              </thead>
              <tbody>
                ${details.processedItems}
                <tr>
                  <th colspan="6" style="border: 1px solid #555; padding: 2px; text-align: right;">Total Amount:</th>
                  <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${details.totalAmount.toFixed(
                    2
                  )}</td>
                </tr>
              </tbody>
            </table>
          `
            )
            .join("")}

          <h4 style="color: #333; font-family: Arial, sans-serif;">Cancelled Items:</h4>
          <table style="border-collapse: collapse; width: 100%;">
            <thead>
              <tr>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">S No.</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">Product Name</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">Image</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">Quantity</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">Price</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">GST Amount</th>
                <th style="border: 1px solid #555; padding: 2px; text-align: center;">SubTotal</th>
              </tr>
            </thead>
            <tbody>
              ${cancelItems}
              <tr>
                <th colspan="6" style="border: 1px solid #555; padding: 2px; text-align: right;">Total Refund Amount:</th>
                <td style="border: 1px solid #555; padding: 2px; text-align: center;">₹${totalCancelAmount.toFixed(
                  2
                )}</td>
              </tr>
            </tbody>
          </table>
          
          <br/>
          <h5 style="color: #333; font-family: Arial, sans-serif;">If you have any concerns or further questions, please feel free to reply to this email.</h5>
          <br/>
          <span style="color: #555; font-size: 13px;">Best regards,</span><br/>
          <span style="color: #555; font-size: 13px;">Team Cheminova</span>
        `,
      });
    }

    res.status(200).json({ message: "Order cancelled successfully" });
  } catch (error) {
    console.error("Error cancelling order:", error);
    res
      .status(500)
      .json({ message: "An error occurred while cancelling the order" });
  }
};