server.js

// server.js — DocForge Node.js Express Backend

require('dotenv').config();
const express = require('express');
const cors    = require('cors');
const path    = require('path');
const fs      = require('fs');

const uploadRoute  = require('./routes/upload');
const analyzeRoute = require('./routes/analyze');
const resultsRoute = require('./routes/results');

const app  = express();
const PORT = process.env.NODE_PORT || 3000;

// ── Ensure Directories Exist ─────────────────────────────────
const dirs = [
  path.join(__dirname, '../uploads'),
  path.join(__dirname, '../results')
];
dirs.forEach(d => { if (!fs.existsSync(d)) fs.mkdirSync(d, { recursive: true }); });

// ── Middleware ────────────────────────────────────────────────
app.use(cors({ origin: '*' }));
app.use(express.json());
app.use(express.urlencoded({ extended: true }));

// Serve frontend
app.use(express.static(path.join(__dirname, '../frontend')));

// Serve uploaded files for preview
app.use('/preview', express.static(path.join(__dirname, '../uploads')));

// ── Routes ────────────────────────────────────────────────────
app.use('/upload',  uploadRoute);
app.use('/analyze', analyzeRoute);
app.use('/results', resultsRoute);

// Health check
app.get('/health', (req, res) => res.json({ status: 'ok', version: '2.1.0' }));

// ── Start ─────────────────────────────────────────────────────
app.listen(PORT, () => {
  console.log(`\n🔍 DocForge Backend running at http://localhost:${PORT}`);
  console.log(`📄 Frontend available at  http://localhost:${PORT}/index.html`);
  console.log(`🐍 Expects Python service at ${process.env.PYTHON_SERVICE_URL || 'http://localhost:8000'}\n`);
});