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

app/api/transactions/[id]/details/route.ts

@@ -0,0 +1,53 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { db } from '@/lib/db';
+
+export async function GET(
+    req: NextRequest,
+    context: { params: Promise<{ id: string }> }
+) {
+    try {
+        const { id } = await context.params;
+
+        if (!id) {
+            return NextResponse.json({ error: 'Missing session ID' }, { status: 400 });
+        }
+
+        const result = await db.query(`
+            SELECT t.*, m.name as merchant_name 
+            FROM transactions t
+            JOIN merchants m ON t.merchant_id = m.id
+            WHERE t.id = $1
+            LIMIT 1
+        `, [id]);
+
+        if (result.rows.length === 0) {
+            return NextResponse.json({ error: 'Transaction not found' }, { status: 404 });
+        }
+
+        const tx = result.rows[0];
+        const metadata = tx.metadata || {};
+
+        return NextResponse.json({
+            id: tx.id,
+            amount: Number(tx.amount),
+            currency: tx.currency,
+            status: tx.status,
+            customer_name: tx.customer_name,
+            ref_id: tx.source_ref_id,
+            merchant_name: tx.merchant_name,
+            callback_url: tx.callback_url,
+            // Only expose public wallet addresses, not private keys
+            wallets: metadata.wallets ? {
+                EVM: metadata.wallets.EVM?.address,
+                SOLANA: metadata.wallets.SOLANA?.address
+            } : null,
+            clientSecret: tx.stripe_pi_id, // For Stripe/Mock
+            nextAction: metadata.nextAction || 'none',
+            redirectUrl: metadata.redirectUrl || '',
+            provider: tx.provider
+        });
+
+    } catch (error: any) {
+        return NextResponse.json({ error: error.message }, { status: 500 });
+    }
+}