Add promo code functionality to deposits and enhance wallet routes

src/routes/wallet.js

@@ -19,6 +19,27 @@ function ensureStripeConfigured(res) {
   return true;
 }
 
+async function getPromoCode(code) {
+  const rows = await query(
+    'SELECT id, code, bonus_type, bonus_value, max_uses, expires_at, active FROM promo_codes WHERE code = ? AND active = 1 AND (expires_at IS NULL OR expires_at > NOW())',
+    [code]
+  );
+  return rows[0];
+}
+
+function calcBonusAmount(amount, promo) {
+  if (!promo) {
+    return 0;
+  }
+  if (promo.bonus_type === 'percent') {
+    return Math.max(0, Math.floor(amount * Number(promo.bonus_value) / 100));
+  }
+  if (promo.bonus_type === 'fixed') {
+    return Math.max(0, Number(promo.bonus_value));
+  }
+  return 0;
+}
+
 router.post('/api/wallet/deposit-intent', authMiddleware, async (req, res) => {
   try {
     if (!ensureStripeConfigured(res)) {
@@ -36,6 +57,39 @@ router.post('/api/wallet/deposit-intent', authMiddleware, async (req, res) => {
       return res.status(400).json({ error: `A feltoltes ${MIN_DEPOSIT} es ${MAX_DEPOSIT} Ft kozott lehet.` });
     }
 
+    const promoInput = req.body.promoCode?.toString().trim().toUpperCase();
+    let promo = null;
+    let bonusAmount = 0;
+    let promoCodeId = null;
+
+    if (promoInput) {
+      promo = await getPromoCode(promoInput);
+      if (!promo) {
+        return res.status(400).json({ error: 'Ervenytelen promo kod.' });
+      }
+
+      const redeemed = await query(
+        'SELECT id FROM promo_redemptions WHERE user_id = ? AND promo_code_id = ? LIMIT 1',
+        [req.userId, promo.id]
+      );
+      if (redeemed.length > 0) {
+        return res.status(400).json({ error: 'A promo kod mar felhasznalva.' });
+      }
+
+      if (promo.max_uses) {
+        const usage = await query(
+          'SELECT COUNT(*) AS count FROM promo_redemptions WHERE promo_code_id = ?',
+          [promo.id]
+        );
+        if ((usage[0]?.count ?? 0) >= promo.max_uses) {
+          return res.status(400).json({ error: 'A promo kod mar elfogyott.' });
+        }
+      }
+
+      bonusAmount = calcBonusAmount(amount, promo);
+      promoCodeId = promo.id;
+    }
+
     const paymentIntent = await stripe.paymentIntents.create({
       amount: stripeAmount,
       currency: 'huf',
@@ -46,8 +100,8 @@ router.post('/api/wallet/deposit-intent', authMiddleware, async (req, res) => {
     });
 
     await query(
-      'INSERT INTO deposits (user_id, amount, stripe_payment_intent_id, status) VALUES (?, ?, ?, ?)',
-      [req.userId, amount, paymentIntent.id, 'created']
+      'INSERT INTO deposits (user_id, amount, bonus_amount, promo_code_id, stripe_payment_intent_id, status) VALUES (?, ?, ?, ?, ?, ?)',
+      [req.userId, amount, bonusAmount, promoCodeId, paymentIntent.id, 'created']
     );
 
     return res.json({ clientSecret: paymentIntent.client_secret, paymentIntentId: paymentIntent.id });
@@ -72,7 +126,7 @@ router.post('/api/wallet/confirm', authMiddleware, async (req, res) => {
     }
 
     const rows = await query(
-      'SELECT id, status, amount FROM deposits WHERE user_id = ? AND stripe_payment_intent_id = ?',
+      'SELECT id, status, amount, bonus_amount, promo_code_id FROM deposits WHERE user_id = ? AND stripe_payment_intent_id = ?',
       [req.userId, paymentIntentId]
     );
     const deposit = rows[0];
@@ -90,7 +144,21 @@ router.post('/api/wallet/confirm', authMiddleware, async (req, res) => {
         'UPDATE deposits SET status = ? WHERE id = ?',
         ['succeeded', deposit.id]
       );
-      await query('UPDATE users SET balance = balance + ? WHERE id = ?', [deposit.amount, req.userId]);
+      const totalCredit = Number(deposit.amount) + Number(deposit.bonus_amount || 0);
+      await query('UPDATE users SET balance = balance + ? WHERE id = ?', [totalCredit, req.userId]);
+
+      if (deposit.promo_code_id) {
+        const already = await query(
+          'SELECT id FROM promo_redemptions WHERE user_id = ? AND promo_code_id = ? LIMIT 1',
+          [req.userId, deposit.promo_code_id]
+        );
+        if (already.length === 0) {
+          await query(
+            'INSERT INTO promo_redemptions (user_id, promo_code_id, deposit_id) VALUES (?, ?, ?)',
+            [req.userId, deposit.promo_code_id, deposit.id]
+          );
+        }
+      }
     }
 
     const balanceRows = await query('SELECT balance FROM users WHERE id = ?', [req.userId]);