Upload 5 files

server/firebase.js

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+// server/firebase.js
+const admin = require('firebase-admin');
+const serviceAccount = require('./serviceAccountKey.json'); // download from Firebase Console
+
+admin.initializeApp({
+  credential: admin.credential.cert(serviceAccount)
+});
+
+const db = admin.firestore();
+
+module.exports = { db };

server/server.js

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+const express = require("express");
+const cors = require("cors");
+const axios = require("axios");
+const helmet = require("helmet");
+const path = require("path");
+
+const app = express();
+const PORT = process.env.PORT || 3001;
+
+// Security headers
+app.use(helmet());
+
+// CORS (restrict in production)
+app.use(
+  cors({
+    origin: process.env.CLIENT_URL || "*",
+    methods: ["GET", "POST", "PUT", "DELETE", "OPTIONS"],
+    allowedHeaders: ["Content-Type", "Authorization"],
+  })
+);
+
+app.use(express.json({ limit: "50mb" }));
+app.use(express.urlencoded({ extended: true, limit: "50mb" }));
+
+// =============================
+// Serve Frontend (React/Vite)
+// =============================
+app.use(
+  express.static(path.join(__dirname, "dist"), {
+    setHeaders: (res, filePath) => {
+      if (filePath.endsWith(".js") || filePath.endsWith(".css")) {
+        // Cache hashed assets for 1 year
+        res.setHeader("Cache-Control", "public, max-age=31536000, immutable");
+      } else {
+        // Cache other assets (images, etc.) for 1 hour
+        res.setHeader("Cache-Control", "public, max-age=3600");
+      }
+    },
+  })
+);
+
+// SPA fallback → always return index.html
+app.get("*", (req, res, next) => {
+  if (req.path.startsWith("/api")) return next(); // skip API routes
+  res.sendFile(path.join(__dirname, "dist", "index.html"));
+});
+
+// =============================
+// Proxy /api requests
+// =============================
+app.use("/api", async (req, res, next) => {
+  try {
+    const url = `https://humanizerx.pro/api/routes.php${req.originalUrl.replace(
+      "/api",
+      ""
+    )}`;
+    const method = req.method.toLowerCase();
+
+    const { data, status } = await axios({
+      url,
+      method,
+      headers: {
+        "Content-Type": req.headers["content-type"],
+        Authorization: req.headers["authorization"],
+      },
+      data: req.body,
+    });
+
+    res.status(status).json(data);
+  } catch (error) {
+    console.error("API Proxy Error:", error.message);
+    res.status(error.response?.status || 500).json({
+      success: false,
+      error: error.message,
+    });
+  }
+});
+
+// Test route
+app.get("/test", (req, res) => {
+  res.json({ msg: "Hello from Humanizer X backend 🚀" });
+});
+
+app.listen(PORT, () => {
+  console.log(`✅ Humanizer X Backend running on http://localhost:${PORT}`);
+});

server/serviceAccountKey.json

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+{
+  "type": "service_account",
+  "project_id": "humanizer-x-16baa",
+  "private_key_id": "21350178209a3ac2f49055fb1fad3dc739826af1",
+  "private_key": "-----BEGIN PRIVATE KEY-----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\ngYb6NAwZ6QpbbBfQYv92FjS5\n-----END PRIVATE KEY-----\n",
+  "client_email": "firebase-adminsdk-fbsvc@humanizer-x-16baa.iam.gserviceaccount.com",
+  "client_id": "114780934799698707217",
+  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
+  "token_uri": "https://oauth2.googleapis.com/token",
+  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
+  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/firebase-adminsdk-fbsvc%40humanizer-x-16baa.iam.gserviceaccount.com",
+  "universe_domain": "googleapis.com"
+}

server/upload.js

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+// backend/upload.js
+const path = require('path');
+const multer = require('multer');
+const fs = require('fs');
+
+// Ensure uploads folder exists
+const uploadsDir = path.join(__dirname, 'uploads');
+if (!fs.existsSync(uploadsDir)) {
+  fs.mkdirSync(uploadsDir, { recursive: true });
+}
+
+const upload = multer({
+  dest: uploadsDir, // Absolute path to uploads folder
+  limits: { fileSize: 15 * 1024 * 1024 }, // 15MB max
+  fileFilter: (req, file, cb) => {
+    const allowedTypes = [
+      'application/pdf',
+      'application/msword',
+      'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+      'text/plain'
+    ];
+    if (allowedTypes.includes(file.mimetype)) {
+      cb(null, true);
+    } else {
+      cb(new Error('Invalid file type. Only PDF, Word, and TXT files are allowed.'));
+    }
+  }
+});
+
+module.exports = upload;