refactor(cart): add global mongodb cart sync and remove legacy logic

bot/bot.js

@@ -915,36 +915,7 @@ if (process.env.BOT_TOKEN && process.env.BOT_TOKEN !== 'YOUR_TELEGRAM_BOT_TOKEN'
         }
     });
 
-    // Eski ai_regenerate va ai_save_last (backward compat)
-    bot.action('ai_regenerate', async (ctx) => {
-        if (!isAdmin(ctx)) return;
-        const state = appState[ctx.from.id];
-        if (state && state.lastPrompt) {
-            const finalPrompt = state.templateBase 
-                ? state.templateBase + ', ' + translatePrompt(state.lastPrompt)
-                : translatePrompt(state.lastPrompt);
-            ctx.answerCbQuery('🔄 Qayta yaratilmoqda...');
-            try { ctx.deleteMessage(); } catch(e) {}
-            await generateAIBannerVariants(ctx, finalPrompt, state.lastPrompt);
-        } else {
-            ctx.answerCbQuery('Avval tavsif yozing');
-        }
-    });
-
-    bot.action('ai_save_last', async (ctx) => {
-        if (!isAdmin(ctx)) return;
-        const state = appState[ctx.from.id];
-        if (state && state.lastImageUrl) {
-            try {
-                const bannerCount = await Banner.countDocuments({ isActive: true });
-                await new Banner({ imageUrl: state.lastImageUrl, title: state.lastPrompt || '', order: bannerCount }).save();
-                ctx.answerCbQuery('✅ Saqlandi!');
-                try { await ctx.deleteMessage(); } catch(e) {}
-                ctx.reply('✅ AI banner saqlandi va ilovada ko\'rinadi!', getMainMenu());
-            } catch(e) { ctx.answerCbQuery('Xato'); }
-        }
-        delete appState[ctx.from.id];
-    });
+    // Eski ai_regenerate va ai_save_last funksiyalari xavfsizlik va optimizatsiya maqsadida o'chirildi (V3.6)
 
     // ==========================================
     // MATN XABARLARI
@@ -1252,12 +1223,6 @@ if (process.env.BOT_TOKEN && process.env.BOT_TOKEN !== 'YOUR_TELEGRAM_BOT_TOKEN'
             state.pushImage = imgUrl;
             appState[userId] = { ...state, step: 'push_confirm' };
             ctx.reply(`📢 Siz quyidagi xabarni BARCHA mijoz telefonlariga (Push) yubormoqchisiz:\n\n*Sarlavha:* ${state.pushTitle}\n*Matn:* ${state.pushMessage}\n*Rasm:* Ulangan\n\n✅ Xabarni tasdiqlaysizmi? (ha / yo'q)`, { parse_mode: 'Markdown' });
-        } else if(state.step === 'adding_banner') {
-            // Eski usul (backward compat)
-            const bannerCount = await Banner.countDocuments({ isActive: true });
-            await new Banner({ imageUrl: imgUrl, order: bannerCount }).save();
-            ctx.reply('✅ Yangi banner saqlandi va dasturga chiqdi!', getMainMenu());
-            delete appState[userId];
         }
     });
 

index.js

@@ -251,6 +251,45 @@ app.get('/api/image/:fileId', async (req, res) => {
     }
 });
 
+// ==========================================
+// USER & CART SYNC (GLOBAL CART API) A-Variant
+// ==========================================
+const User = require('./models/User');
+
+app.post('/api/users/login', async (req, res) => {
+    try {
+        const { uid, email, name } = req.body;
+        if (!uid) return res.status(400).json({ message: "UID majburiy" });
+        let user = await User.findOne({ uid });
+        if (!user) {
+            user = new User({ uid, email, name, cart: [] });
+            await user.save();
+        }
+        res.json({ message: "Muvaffaqiyatli", user });
+    } catch (e) { res.status(500).json({ error: e.message }); }
+});
+
+app.post('/api/users/sync-cart', async (req, res) => {
+    try {
+        const { uid, cart } = req.body;
+        if (!uid) return res.status(400).json({ message: "UID majburiy" });
+        const user = await User.findOneAndUpdate(
+            { uid },
+            { cart: cart || [], lastSyncedAt: Date.now() },
+            { new: true, upsert: true } // agar avval topilmasa o'zi yaratadi
+        );
+        res.json({ message: "Sinxronlandi", cart: user.cart });
+    } catch (e) { res.status(500).json({ error: e.message }); }
+});
+
+app.get('/api/users/cart/:uid', async (req, res) => {
+    try {
+        const user = await User.findOne({ uid: req.params.uid });
+        if (!user) return res.json({ cart: [] });
+        res.json({ cart: user.cart });
+    } catch (e) { res.status(500).json({ error: e.message }); }
+});
+
 const PORT = process.env.PORT || 7860;
 app.listen(PORT, '0.0.0.0', () => {
     console.log(`Server is running on port ${PORT}`);

models/User.js

@@ -0,0 +1,20 @@
+const mongoose = require('mongoose');
+
+const cartItemSchema = new mongoose.Schema({
+    productId: { type: String, required: true },
+    name: { type: String, required: true },
+    imageUrl: { type: String },
+    price: { type: Number, required: true },
+    size: { type: String },
+    quantity: { type: Number, default: 1 }
+}, { _id: false });
+
+const userSchema = new mongoose.Schema({
+    uid: { type: String, required: true, unique: true }, // Firebase dan kelgan takrorlanmas ID
+    email: { type: String },
+    name: { type: String },
+    cart: [cartItemSchema], // Snapshot usulida saqlanadigan savatcha
+    lastSyncedAt: { type: Date, default: Date.now }
+});
+
+module.exports = mongoose.model('User', userSchema);