Added Proposal Submission Forms

backend/.gitignore

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+node_modules
+.env

backend/app.js

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+const express = require('express');
+const nodemailer = require('nodemailer');
+const multer = require('multer');
+const cors = require('cors');
+const path = require('path');
+require('dotenv').config();
+
+const app = express();
+
+app.use(cors());
+app.use(express.json());
+app.use(express.urlencoded({ extended: true }));
+
+const storage = multer.diskStorage({
+  destination: (req, file, cb) => {
+    cb(null, 'uploads/');
+  },
+  filename: (req, file, cb) => {
+    cb(null, Date.now() + path.extname(file.originalname));
+  }
+});
+const upload = multer({ storage: storage });
+
+const transporter = nodemailer.createTransport({
+  service: 'gmail',
+  auth: {
+    user: process.env.EMAIL_USER,
+    pass: process.env.EMAIL_PASS
+  }
+});
+
+// Endpoint for proposal submission
+app.post('/submit-proposal', upload.array('pdfs'), async (req, res) => {
+  const { 
+    name, 
+    email, 
+    proposalTitle, 
+    description, 
+    difficulty, 
+    mentors,
+    references
+  } = req.body;
+
+  const mentorList = mentors.split(',').map(mentor => {
+    const [mentorName, mentorEmail] = mentor.trim().split(':');
+    return { name: mentorName.trim(), email: mentorEmail.trim() };
+  });
+
+  try {
+    // Sender Confirmation Email
+    await transporter.sendMail({
+      from: '[email protected]',
+      to: email,
+      subject: 'Proposal Submission Confirmation',
+      html: `
+        <h2>Proposal Submission Confirmation</h2>
+        <p>Hi ${name},</p>
+        <p>Your proposal "${proposalTitle}" has been submitted successfully.</p>
+        <h3>Proposal Details:</h3>
+        <ul>
+          <li><strong>Title:</strong> ${proposalTitle}</li>
+          <li><strong>Difficulty:</strong> ${difficulty}</li>
+          <li><strong>Description:</strong> ${description}</li>
+        </ul>
+      `,
+      attachments: req.files.map(file => ({
+        filename: file.originalname,
+        path: file.path
+      }))
+    });
+
+    // Mentor Notification Emails
+    for (const mentor of mentorList) {
+      await transporter.sendMail({
+        from: '[email protected]',
+        to: mentor.email,
+        subject: `New Proposal: ${proposalTitle}`,
+        html: `
+          <h2>Proposal Notification</h2>
+          <p>A new proposal has been submitted:</p>
+          <h3>Proposal Details:</h3>
+          <ul>
+            <li><strong>Submitter:</strong> ${name}</li>
+            <li><strong>Title:</strong> ${proposalTitle}</li>
+            <li><strong>Difficulty:</strong> ${difficulty}</li>
+            <li><strong>Description:</strong> ${description}</li>
+          </ul>
+        `,
+        attachments: req.files.map(file => ({
+          filename: file.originalname,
+          path: file.path
+        }))
+      });
+    }
+
+    res.status(200).json({ message: 'Emails sent successfully' });
+  } catch (error) {
+    console.error('Email sending error:', error);
+    res.status(500).json({ message: 'Failed to send emails', error: error.message });
+  }
+});
+
+const PORT = process.env.PORT || 3001;
+app.listen(PORT, () => console.log(`Server running on port ${PORT}`));