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 });
    }
}