added routes to sumbit the answers

package.json

@@ -11,7 +11,8 @@
     "dependencies": {
         "express": "^4.18.2",
         "cors": "^2.8.5",
-        "dotenv": "^16.3.1"
+        "dotenv": "^16.3.1",
+        "multer": "^1.4.5-lts.1"
     },
     "devDependencies": {
         "nodemon": "^3.0.2",

src/routes/answers.js

@@ -0,0 +1,112 @@
+import { Router } from 'express';
+import multer from 'multer';
+import { InvalidJsonFormatError } from '../utils/errors.js';
+
+const router = Router();
+
+// Configure multer for file uploads
+const upload = multer({
+    storage: multer.memoryStorage(),
+    limits: {
+        fileSize: 200 * 1024 * 1024, // 200MB limit, since the comement gen is 147MB (deflated)
+    },
+    fileFilter: (_req, file, cb) => {
+        // Accept only JSON files
+        if (file.mimetype === 'application/json') {
+            cb(null, true);
+        } else {
+            cb(new Error('Only JSON files are allowed'));
+        }
+    }
+});
+
+// Helper function to validate JSON format
+const validateJsonFormat = (data) => {
+    try {
+        const parsed = JSON.parse(data);
+        // Check if it's an object
+        if (typeof parsed !== 'object' || parsed === null || Array.isArray(parsed)) {
+            throw new InvalidJsonFormatError("Submitted json doesn't contain an object");
+        }
+        // Check if all values are strings
+        if (!Object.values(parsed).every(value => typeof value === 'string')) {
+            throw new InvalidJsonFormatError("Submitted json object must only be str -> str. Namely id -> comment");
+        }
+        return parsed;
+    } catch (error) {
+        if (error instanceof InvalidJsonFormatError) {
+            throw error;
+        }
+        throw new InvalidJsonFormatError('Invalid JSON format');
+    }
+};
+
+router.post('/submit/comments', upload.single('file'), async (req, res) => {
+    try {
+        if (!req.file) {
+            return res.status(400).json({ error: 'No file uploaded' });
+        }
+
+        const fileContent = req.file.buffer.toString();
+        let validatedData;
+
+        try {
+            validatedData = validateJsonFormat(fileContent);
+        } catch (error) {
+            if (error instanceof InvalidJsonFormatError) {
+                return res.status(400).json({
+                    error: 'Invalid JSON format',
+                    message: error.message
+                });
+            }
+            throw error;
+        }
+
+        // TODO: Save the file or process it further
+        // For now, just return success
+        res.status(200).json({
+            message: 'Answer submitted successfully',
+            data: validatedData
+        });
+
+    } catch (error) {
+        console.error('Error processing submission:', error);
+        res.status(500).json({ error: 'Error processing submission' });
+    }
+});
+
+router.post('/submit/refinement', upload.single('file'), async (req, res) => {
+    try {
+        if (!req.file) {
+            return res.status(400).json({ error: 'No file uploaded' });
+        }
+
+        const fileContent = req.file.buffer.toString();
+        let validatedData;
+
+        try {
+            validatedData = validateJsonFormat(fileContent);
+        } catch (error) {
+            if (error instanceof InvalidJsonFormatError) {
+                return res.status(400).json({
+                    error: 'Invalid JSON format',
+                    message: error.message
+                });
+            }
+            throw error;
+        }
+
+        // TODO: Save the file or process it further
+        // For now, just return success
+        res.status(200).json({
+            message: 'Answer submitted successfully',
+            data: validatedData
+        });
+
+    } catch (error) {
+        console.error('Error processing submission:', error);
+        res.status(500).json({ error: 'Error processing submission' });
+    }
+});
+
+export default router; 

src/routes/index.js

@@ -1,5 +1,6 @@
 import { Router } from 'express';
 import datasetRoutes from './datasets.js';
+import answerRoutes from './answers.js';
 
 const router = Router();
 
@@ -16,4 +17,7 @@ router.get('/api/hello', (_req, res) => {
 // Dataset routes
 router.use('/datasets', datasetRoutes);
 
+// Answer submission routes
+router.use('/answers', answerRoutes);
+
 export default router; 

src/utils/errors.js

@@ -0,0 +1,6 @@
+export class InvalidJsonFormatError extends Error {
+    constructor(message = 'JSON must be an object mapping strings to strings') {
+        super(message);
+        this.name = 'InvalidJsonFormatError';
+    }
+}