Ready-Made Source Code
for Game Apps

// ── Wallet Deposit via Razorpay ────────────────────────────────────────── // Called after Razorpay webhook confirms payment. Adds credits to user wallet // and writes a transaction record. Idempotent — safe to retry on failure. export async function processDeposit(req, res) { const { userId, paymentId, amount, packId } = req.body; // Verify signature with Razorpay secret before crediting const isValid = await verifyRazorpaySignature(req.headers, req.body); if (!isValid) return res.status(400).json({ error: 'Invalid signature' }); // Atomically update wallet balance in Firebase RTDB const ref = db.ref(`wallets/${userId}`); await ref.transaction(wallet => ({ ...wallet, balance: (wallet?.balance || 0) + amount, updatedAt: Date.now(), })); // Log transaction for audit trail await logTransaction({ userId, type: 'deposit', amount, paymentId, packId }); res.json({ success: true, newBalance: (wallet?.balance || 0) + amount }); }