Create index.js

index.js

@@ -0,0 +1,71 @@
+const express = require('express');
+const http = require('http');
+const socketIo = require('socket.io');
+const fs = require('fs');
+const path = require('path');
+
+const app = express();
+const server = http.createServer(app);
+const io = socketIo(server);
+
+const uploadDir = path.join(__dirname, 'uploads');
+if (!fs.existsSync(uploadDir)) fs.mkdirSync(uploadDir);
+
+app.use(express.static('public'));
+
+let receivers = 0;
+const fileExpiryTime = 5 * 60 * 60 * 1000; 
+const fileMetadata = new Map();
+
+setInterval(() => {
+	const now = Date.now();
+	fs.readdirSync(uploadDir).forEach(file => {
+		const filePath = path.join(uploadDir, file);
+		const stats = fs.statSync(filePath);
+		const fileAge = now - stats.birthtimeMs;
+
+		if (fileAge > fileExpiryTime) {
+			fs.unlinkSync(filePath);
+			fileMetadata.delete(file);
+		}
+	});
+}, 60 * 60 * 1000); 
+
+io.on('connection', (socket) => {
+	socket.on('setMode', (mode) => {
+		socket.mode = mode;
+		if (mode === 'receiver') {
+			receivers++;
+			io.emit('onlineCount', receivers);
+		}
+	});
+
+	socket.on('disconnect', () => {
+		if (socket.mode === 'receiver') {
+			receivers--;
+			io.emit('onlineCount', receivers);
+		}
+	});
+
+	socket.on('upload', ({ fileName, fileData }) => {
+		const filePath = path.join(uploadDir, fileName);
+		const buffer = Buffer.from(fileData, 'base64');
+		fs.writeFileSync(filePath, buffer);
+		fileMetadata.set(fileName, { uploadedAt: Date.now() });
+		socket.emit('uploadComplete');
+		io.emit('fileReady', { fileName });
+	});
+
+	socket.on('requestFile', ({ fileName }) => {
+		const filePath = path.join(uploadDir, fileName);
+		if (fs.existsSync(filePath)) {
+			const fileBuffer = fs.readFileSync(filePath);
+			socket.emit('fileData', { fileName, fileData: fileBuffer.toString('base64') });
+		} else {
+			socket.emit('error', { message: 'File not found' });
+		}
+	});
+});
+
+const PORT = 7860;
+server.listen(PORT, () => console.log(`Server running on http://localhost:${PORT}`));