Refactor: Fully migrated to direct PostgreSQL, implemented Public API v1, fixed Vercel deployment conflicts, and updated documentation

app/api/create-payment-intent/route.ts

@@ -1,6 +1,7 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { db } from '@/lib/db';
 import { PaymentProviderFactory } from '@/lib/payment-providers';
+import { CryptoEngine } from '@/lib/crypto-engine';
 
 export async function POST(req: NextRequest) {
     try {
@@ -23,7 +24,7 @@ export async function POST(req: NextRequest) {
             } else {
                 result = await db.query('SELECT * FROM merchants WHERE short_id = $1', [merchant_id]);
             }
-            
+
             if (result.rows.length === 0) {
                 return NextResponse.json({ error: 'Firma bulunamadı.' }, { status: 404 });
             }
@@ -70,7 +71,16 @@ export async function POST(req: NextRequest) {
             redirectUrl = intent.redirectUrl || '';
         }
 
-        // 3. Log transaction in Supabase
+        // 3. Generate Temporary Wallets for Crypto fallback
+        const evmWallet = await CryptoEngine.createTemporaryWallet('POLYGON');
+        const solWallet = await CryptoEngine.createTemporaryWallet('SOLANA');
+
+        const cryptoWallets = {
+            EVM: { address: evmWallet.address, privateKey: evmWallet.privateKey },
+            SOLANA: { address: solWallet.address, privateKey: solWallet.privateKey }
+        };
+
+        // 4. Log transaction in Supabase
         try {
             await db.query(`
                 INSERT INTO transactions (
@@ -81,7 +91,11 @@ export async function POST(req: NextRequest) {
             `, [
                 amount, currency, 'pending', providerTxId, ref_id,
                 customer_name, customer_phone, callback_url, resolvedMerchantId,
-                provider, JSON.stringify({ nextAction, redirectUrl })
+                provider, JSON.stringify({
+                    nextAction,
+                    redirectUrl,
+                    wallets: cryptoWallets
+                })
             ]);
         } catch (dbError) {
             console.error('Database log error:', dbError);
@@ -91,7 +105,11 @@ export async function POST(req: NextRequest) {
             clientSecret: clientSecret,
             nextAction,
             redirectUrl,
-            provider
+            provider,
+            wallets: {
+                EVM: evmWallet.address,
+                SOLANA: solWallet.address
+            }
         });
     } catch (err: any) {
         console.error('Internal Error:', err);