Support Firebase Auth UIDs and Endpoint

src/api/routes.js

@@ -529,5 +529,59 @@ router.post('/auth/verify-code', async (req, res) => {
     }
 });
 
+res.json({ success: false, message: "Kod noto'g'ri" });
+        }
+    } catch (e) {
+    res.status(500).json({ success: false, message: "Server Error" });
+}
+});
+
+router.post('/auth/firebase', async (req, res) => {
+    try {
+        const { uid, phone, name, email } = req.body;
+        if (!uid) return res.status(400).json({ success: false, message: "UID required" });
+
+        let user = await User.findOne({ firebase_uid: uid });
+        if (!user && phone) {
+            // Try finding by phone if user existed before
+            const cleanPhone = phone.replace('+', '');
+            user = await User.findOne({ phone: cleanPhone });
+        }
+
+        if (!user) {
+            // Create New User
+            user = new User({
+                id: uid, // Use Firebase UID as ID
+                firebase_uid: uid,
+                first_name: name || 'Foydalanuvchi',
+                phone: phone ? phone.replace('+', '') : null,
+                username: email ? email.split('@')[0] : null
+            });
+            await user.save();
+        } else {
+            // Link existing user
+            if (!user.firebase_uid) {
+                user.firebase_uid = uid;
+                await user.save();
+            }
+        }
+
+        res.json({
+            success: true,
+            status: 'approved',
+            user: {
+                id: user.id.toString(),
+                name: user.first_name,
+                username: user.username,
+                phone: user.phone
+            }
+        });
+
+    } catch (e) {
+        console.error("Firebase Auth Error:", e);
+        res.status(500).json({ success: false, message: "Server Error" });
+    }
+});
+
 module.exports = router;
 

src/models/User.js

@@ -1,7 +1,8 @@
 const mongoose = require('mongoose');
 
 const userSchema = new mongoose.Schema({
-    id: { type: Number, required: true, unique: true },
+    id: { type: String, required: true, unique: true }, // Changed to String to support Firebase UID
+    firebase_uid: { type: String, unique: true, sparse: true }, // NEW
     first_name: String,
     username: String,
     language: { type: String, default: null }, // 'uz', 'ru', 'en'