import { NextResponse } from 'next/server';
import { CryptoEngine } from '@/lib/crypto-engine';
import { db } from '@/lib/db';

export async function POST(request: Request) {
    try {
        const body = await request.json();
        const { txId, merchantAddress, amount, currency } = body;

        console.log(`[API] Checking and Sweeping for Transaction: ${txId}`);
        
        // This is a demo integration. In a real application:
        // 1. We would look up the transaction ID from the DB
        // 2. Fetch the temporary wallet private key created for that specific TX
        // 3. We use the platform address defined in our .env or settings

        // For this demo, we'll use the user's devnet wallet as both the source (temp wallet) and platform
        const demoTempWalletPrivKey = "3Ab6AyfDDWquPJ6ySjHmQmiW3USg7CuDxJSNtrNQySsXj5v4KfBKcw9vnK1Rrfwm6RYq43PdKjiNZekgtNzGsNm2"; 
        const platformAddress = "5pLH1tqZhx8p8WpZ18yr28N42KXB3FXVPzZ9ceCtpBVe";
        
        // Ensure we have a merchant address or use a fallback for testing
        const targetMerchant = merchantAddress || "5pLH1tqZhx8p8WpZ18yr28N42KXB3FXVPzZ9ceCtpBVe"; // using same for demo
        
        // Initialize Crypto Engine for Solana
        const cryptoEngine = new CryptoEngine('SOLANA');

        console.log("Starting Sweep Process on SOLANA DEVNET...");
        
        // Attempt the sweep (this will do a real devnet transaction if uncommented in engine)
        const sweepResult = await cryptoEngine.sweepFunds(
            demoTempWalletPrivKey,
            targetMerchant,
            platformAddress,
            'SOL' // Using native SOL for demo
        );

        if (!sweepResult.success) {
            throw new Error("Süpürme işlemi başarısız oldu.");
        }

        // --- UPDATE DATABASE STATUS ---
        // Marks the transaction as succeeded so it updates in the Admin dashboard
        try {
            await db.query(
                `UPDATE transactions 
                 SET status = 'succeeded' 
                 WHERE stripe_pi_id = $1`,
                [txId]
            );
        } catch (dbError) {
            console.error('[API] Failed to update transaction status in DB:', dbError);
        }

        return NextResponse.json({
            success: true,
            message: "Ödeme başarıyla doğrulandı ve dağıtıldı (Solana Devnet).",
            split: {
                platform: "%1",
                merchant: "%99"
            },
            hashes: {
                platform: sweepResult.platformTx,
                merchant: sweepResult.merchantTx
            }
        });

    } catch (error: any) {
        return NextResponse.json({ success: false, error: error.message }, { status: 500 });
    }
}