// // /routes/email.js
// const express = require("express");
// const nodemailer = require("nodemailer");
// const fs = require("fs");
// const router = express.Router();

// router.post("/", async (req, res) => {
//   const { teacher, csvData, fileName, recipientEmail } = req.body;

//   if (!teacher || !csvData || !fileName || !recipientEmail) {
//     return res.status(400).json({ error: "Missing required fields" });
//   }

//   // Save the CSV data to a temporary file
//   const filePath = `./${fileName}`;
//   fs.writeFileSync(filePath, csvData);

//   // Configure Nodemailer transporter
//   const transporter = nodemailer.createTransport({
//     service: "gmail",
//     auth: {
//       user: "swdc.ate@gmail.com", // Replace with your email
//       pass: "umlc hbkr dpga iywd", // Replace with your app-specific password or token
//     },
//     // tls: {
//     //   rejectUnauthorized: false, // Disable SSL verification
//     // }
//   });

//   // Email options
//   const mailOptions = {
//     from: "swdc.ate@gmail.com", // Replace with your email
//     to: recipientEmail,
//     subject: `Excel File for ${teacher}`,
//     text: `Attached is the Excel file for ${teacher}.`,
//     attachments: [
//       {
//         filename: fileName,
//         path: filePath,
//         contentType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', // MIME type for xlsx
//       },
//     ],
//   };

//   try {
//     // Send email
//     await transporter.sendMail(mailOptions);

//     // Delete the temporary file after sending the email
//     fs.unlinkSync(filePath);

//     res.status(200).json({ message: "Email sent successfully" });
//   } catch (error) {
//     console.error("Error sending email:", error);
//     res.status(500).json({ error: "Failed to send email" });
//   }
// });

// module.exports = router;


const express = require("express");
const nodemailer = require("nodemailer");
const fs = require("fs");
const multer = require("multer");
const router = express.Router();

// Setup multer for handling file uploads
const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, "./"); // Save to the current directory (you can customize this)
  },
  filename: function (req, file, cb) {
    cb(null, file.originalname); // Use the original file name
  },
});

const upload = multer({ storage });

// Route to handle email sending with file attachment
router.post("/", upload.single("file"), async (req, res) => {
  const { teacher, fileName, recipientEmail } = req.body;

  if (!teacher || !fileName || !recipientEmail || !req.file) {
    return res.status(400).json({ error: "Missing required fields or file" });
  }

  // Configure Nodemailer transporter
  const transporter = nodemailer.createTransport({
    service: "gmail",
    auth: {
      user: "swdc.ate@gmail.com", // Replace with your email
      pass: "umlc hbkr dpga iywd", // Replace with your app-specific password or token
    },
  });

  // Email options
  const mailOptions = {
    from: "swdc.ate@gmail.com", // Replace with your email
    to: recipientEmail,
    subject: `Excel File for ${teacher}`,
    text: `Attached is the Excel file for ${teacher}.`,
    attachments: [
      {
        filename: fileName,
        path: req.file.path, // Use the uploaded file's path
      },
    ],
  };

  try {
    // Send email
    await transporter.sendMail(mailOptions);

    // Delete the temporary file after sending the email
    fs.unlinkSync(req.file.path);

    res.status(200).json({ message: "Email sent successfully" });
  } catch (error) {
    console.error("Error sending email:", error);
    res.status(500).json({ error: "Failed to send email" });
  }
});

module.exports = router;