case 'trx': {
    const nomor = sender.split("@")[0];
    const Data = JSON.parse(fs.readFileSync(pathUser));
    const userProfile = Data.find((user) => user.nomor === nomor);
    if (!userProfile) return m.reply(`Kamu belum terdaftar, silahkan ketik : *Daftar* untuk bisa mengakses`);

    if (global.pendingTransactions && global.pendingTransactions[nomor]) {
        const pendingTrx = global.pendingTransactions[nomor];
        let pendingMsg = `*TRANSAKSI MENUNGGU*\n\n`;
        pendingMsg += `*Produk:* ${pendingTrx.product.nama_layanan}\n`;
        pendingMsg += `*Jenis:* ${pendingTrx.product.kategori}\n`;
        pendingMsg += `*ID Game:* ${pendingTrx.customer_no}`;
        if (pendingTrx.customer_zone) pendingMsg += ` (${pendingTrx.customer_zone})`;
        pendingMsg += `\n`;

        if (pendingTrx.nickInfo && pendingTrx.nickInfo.success) {
            pendingMsg += `*Nickname:* ${pendingTrx.nickInfo.data.nickname}\n`;
            if (pendingTrx.nickInfo.data.region) {
                pendingMsg += `*Region:* ${pendingTrx.nickInfo.data.region}\n`;
            }
        }
        
        pendingMsg += `*Harga:* ${rupiah(pendingTrx.adjustedPrice)}\n\n`;
        pendingMsg += `Ketik *Y* untuk melanjutkan atau *N* untuk membatalkan`;
        return m.reply(pendingMsg);
    }

    if (args.length < 2) {
        const example = `Contoh penggunaan:\n` +
            `• *${command} MLH5 123456789 1234* (Mobile Legends)\n` +
            `• *${command} FF456 987654321* (Free Fire)\n` +
            `• *${command} PUBG789 555666777* (PUBG Mobile)\n` +
            `• *${command} GI999 111222333 os_asia* (Genshin Impact)`;
        return m.reply(`Format salah!\n\n${example}`);
    }

    const buyer_sku_code = args[0];
    const productData = JSON.parse(fs.readFileSync('./db/datagz.json', 'utf8'));
    const product = productData.find(prod => 
        prod.kode && prod.kode.toLowerCase() === buyer_sku_code.toLowerCase()
    );
    
    if (!product) return m.reply(`❌ Produk dengan kode *${buyer_sku_code}* tidak ditemukan`);
    let customer_no, customer_zone;
    const hasServerInfo = args.length >= 3;
    
    if (hasServerInfo) {
        customer_no = args[1];
        customer_zone = args.slice(2).join(' ');
    } else {
        customer_no = args[1];
        customer_zone = '';
    }
    const userData = JSON.parse(fs.readFileSync('./db/users.json'));
    const userSaldo = userData.find(saldo => saldo.nomor === nomor);
    if (!userSaldo) return m.reply(`❌ Kamu belum terdaftar, ketik *Daftar* untuk memulai`);

    try {
        const userRole = userData.find(role => role.nomor === nomor)?.role || 'BRONZE';
        function calculatePrice(product, userRole) {
            const defaultMarkupPercentage = 0.015; 
            let markupConfig;
            try {
                const markupData = fs.readFileSync('./db/markup.json', 'utf8');
                markupConfig = JSON.parse(markupData);
            } catch (error) {
                console.error('Error loading markup configuration:', error);
                markupConfig = {
                    bronze: 0.015,  // 1.5% markup
                    gold: 0.01,     // 1% markup
                    platinum: 0.005, // 0.5% markup
                    owner: 0.001    // 0.1% markup
                };
            }
            const originalPrice = parseFloat(product.harga);
            let markupPercentage = defaultMarkupPercentage;
            
            if (userRole === "GOLD") {
                markupPercentage = markupConfig.gold;
            } else if (userRole === "PLATINUM") {
                markupPercentage = markupConfig.platinum;
            } else if (userRole === "BRONZE") {
                markupPercentage = markupConfig.bronze;
            } else if (userRole === "OWNER") {
                markupPercentage = markupConfig.owner;
            }

            const increasedPrice = originalPrice * (1 + markupPercentage);
            return Math.round(increasedPrice);
        }
        
        const adjustedPrice = calculatePrice(product, userRole);
        let nickInfo = null;

        if (product.kategori.toLowerCase().includes('ml') || product.kategori.toLowerCase().includes('mobile legends')) {
            nickInfo = await checkNickname('mobile legends', customer_no, customer_zone);
        } else if (product.kategori.toLowerCase().includes('ff') || product.kategori.toLowerCase().includes('free fire')) {
            nickInfo = await checkNickname('free fire', customer_no);
        } else if (product.kategori.toLowerCase().includes('pubg')) {
            nickInfo = await checkNickname('pubg', customer_no);
        }

        if (nickInfo && !nickInfo.success && nickInfo.message.includes("404")) {
            return m.reply(`❌ *ID Game tidak ditemukan*\n\nMohon periksa kembali ID Game yang dimasukkan.`);
        }

        const trxPreview = generateTransactionPreview(
            product, 
            customer_no, 
            customer_zone, 
            adjustedPrice,
            nickInfo
        );

        await xstbot.sendMessage(m.chat, { text: trxPreview }, { quoted: m });
        savePendingTransaction(
            nomor,
            buyer_sku_code,
            customer_no,
            customer_zone,
            product,
            adjustedPrice,
            userSaldo,
            userData,
            nickInfo
        );

    } catch (error) {
        console.error('Transaction Error:', error);
        if (error.toString().includes("Request failed with status code 404")) {
            return m.reply(`❌ *ID Game tidak valid*\n\nMohon periksa kembali ID Game yang dimasukkan.`);
        } else {
            m.reply('⚠️ Terjadi kesalahan saat memproses transaksi. Silakan coba lagi.');
        }
    }
}
break;
// =========================================================
case 'y': {
    const nomor = sender.split("@")[0];
    if (!global.pendingTransactions || !global.pendingTransactions[nomor]) {
        return m.reply(`Tidak ada transaksi yang menunggu konfirmasi.`);
    }
    
    const transaction = global.pendingTransactions[nomor];
    delete global.pendingTransactions[nomor];
    const { 
        product, 
        customer_no, 
        customer_zone, 
        adjustedPrice, 
        userSaldo, 
        userData,
        nickInfo
    } = transaction;

    let modalPrice = product.harga || 0;
    if (!userSaldo.saldo || userSaldo.saldo < adjustedPrice) {
        return m.reply(`Total saldo kamu (${rupiah(userSaldo.saldo || 0)}) tidak cukup untuk transaksi senilai ${rupiah(adjustedPrice)}.\n\nSilakan isi saldo terlebih dahulu.`);
    } else {
        userSaldo.saldo -= adjustedPrice;
        fs.writeFileSync('./db/users.json', JSON.stringify(userData, null, 2));
        await processGZStoreTransaction();
    }
    
    async function processGZStoreTransaction() {
        const ref_id = Invoice(); // Menggunakan fungsi Invoice() untuk generate invoice
        const apikey = global.GriezSt;
        
        try {
            let invo = `*── 「 TRANSAKSI PROSES 」 ──*\n\n`;
            invo += `> *Produk :* ${product.nama_layanan}\n`;
            invo += `> *Kategori :* ${product.kategori}\n`;
            invo += `> *Tujuan :* ${customer_no}${customer_zone ? ' ' + customer_zone : ''}\n`;
            
            if (nickInfo && nickInfo.success) {
                invo += `> *Nickname :* ${nickInfo.data.nickname}\n`;
                if (nickInfo.data.region) {
                    invo += `> *Region :* ${nickInfo.data.region}\n`;
                }
            }
            
            invo += `> *Harga :*  ${rupiah(adjustedPrice)}\n`;
            invo += `> *Invoice :* ${ref_id}\n`; 
            await xstbot.sendText(m.chat, invo, m);

            const requestBody = {
                api_key: apikey,
                user_id: customer_no,
                zone: customer_zone || '',
                service: product.kode,
                quantity: "1",
                kontak: "6285380779466" 
            };

            const orderResponse = await axios.post(
                'https://gzstore.id/api/v1/Order',
                requestBody,
                { headers: { 'Content-Type': 'application/json' } }
            );
            
            console.log("GZ Store Order Response:", orderResponse.data);

            if (!orderResponse.data || !orderResponse.data.status || !orderResponse.data.data || !orderResponse.data.data.id) {
                userSaldo.saldo += adjustedPrice;
                fs.writeFileSync('./db/users.json', JSON.stringify(userData, null, 2));
                return m.reply(orderResponse.data?.message || "Gagal memproses pesanan");
            }
            
            const orderId = orderResponse.data.data.id;   
            let transactionCompleted = false;

            // Real-time status checking - tanpa batasan retry
            while (!transactionCompleted) {
                await new Promise(resolve => setTimeout(resolve, 5000)); // Polling setiap 5 detik
                
                try {
                    const statusResponse = await axios.post(
                        'https://gzstore.id/api/v1/status',
                        {
                            api_key: apikey,
                            order_id: orderId
                        },
                        { headers: { 'Content-Type': 'application/json' } }
                    );
                    
                    console.log("GZ Store Status Response:", statusResponse.data);

                    if (!statusResponse.data || !statusResponse.data.status || !statusResponse.data.data) { 
                        continue; // Lanjutkan polling jika respons tidak valid
                    }
                    
                    const statusData = statusResponse.data.data;

                    if (statusData && statusData.status) {
                        // Transaksi sukses
                        if (statusData.status === 'Success') {
                            let responseMsg = `*── 「 TRANSAKSI SUKSES 」 ──*\n\n`;
                            responseMsg += `*» Produk :* ${statusData.layanan || product.nama_layanan}\n`;
                            responseMsg += `*» Kategori :* ${product.kategori}\n`;
                            responseMsg += `*» Tujuan :* ${statusData.user_id || customer_no}${statusData.zone ? ' ' + statusData.zone : (customer_zone ? ' ' + customer_zone : '')}\n`;

                            const displayUsername = (statusData.username && statusData.username !== '-') ? 
                                statusData.username : (nickInfo && nickInfo.success ? nickInfo.data.nickname : "");
                                
                            if (displayUsername) {
                                responseMsg += `*» Nickname :* ${displayUsername}\n`;

                                if (nickInfo && nickInfo.success && nickInfo.data.region) {
                                    responseMsg += `*» Region :* ${nickInfo.data.region}\n`;
                                }
                            }
                            
                            responseMsg += `*» Harga :* ${rupiah(adjustedPrice)}\n`;
                            responseMsg += `*» Invoice :* ${ref_id}\n`;
                            
                            if (statusData.keterangan) {
                                responseMsg += `*» Info :* ${statusData.keterangan}\n`;
                            }
                            
                            await xstbot.sendMessage(m.chat, { text: responseMsg }, { quoted: m });
                            
                            // Simpan transaksi sukses
                            saveTransaction(
                                nomor, 
                                "Berhasil", 
                                ref_id, 
                                statusData.layanan || product.nama_layanan,
                                product.kategori,
                                "00", 
                                statusData.user_id || customer_no, 
                                statusData.zone || customer_zone || "", 
                                displayUsername,
                                adjustedPrice, 
                                product.harga,
                                nickInfo && nickInfo.success ? nickInfo.data.region : null
                            );
                            
                            transactionCompleted = true;
                            break;
                        } 
                        // Status gagal
                        else if (
                            statusData.status === 'Cancelled' || 
                            statusData.status === 'Canceled' || 
                            statusData.status === 'Failed' || 
                            statusData.status === 'Error'
                        ) {
                            const failedInvoice = Invoice();
                            let responseMsg = `*── 「 TRANSAKSI GAGAL 」 ──*\n\n`;
                            responseMsg += `Pesananmu *${statusData.layanan || product.nama_layanan}* Gagal\n`;
                            responseMsg += `Kategori: *${product.kategori}*\n`;
                            responseMsg += `Tujuan: *${statusData.user_id || customer_no}${statusData.zone ? ' ' + statusData.zone : (customer_zone ? ' ' + customer_zone : '')}*\n`;
                            
                            // Tambahkan nickname jika ada, dari status atau pengecekan awal
                            const displayUsername = (statusData.username && statusData.username !== '-') ? 
                                statusData.username : (nickInfo && nickInfo.success ? nickInfo.data.nickname : "");
                                
                            if (displayUsername) {
                                responseMsg += `Nickname: *${displayUsername}*\n`;
                                
                                // Tambahkan region jika tersedia dari pengecekan awal
                                if (nickInfo && nickInfo.success && nickInfo.data.region) {
                                    responseMsg += `Region: *${nickInfo.data.region}*\n`;
                                }
                            }
                            
                            responseMsg += `Invoice: *${failedInvoice}*\n`; 
                            responseMsg += `Pesan: ${statusData.keterangan || "Terjadi kesalahan pada sistem"}\n\n`;
                            responseMsg += `Saldo telah dikembalikan ke akun Anda.`;                      
                            
                            await xstbot.sendMessage(m.chat, { text: responseMsg }, { quoted: m });
                            
                            // Kembalikan saldo
                            userSaldo.saldo += adjustedPrice;
                            fs.writeFileSync('./db/users.json', JSON.stringify(userData, null, 2));
                            
                            // Simpan transaksi gagal
                            saveTransaction(
                                nomor, 
                                "Gagal", 
                                failedInvoice, 
                                statusData.layanan || product.nama_layanan,
                                product.kategori,
                                "99", 
                                statusData.user_id || customer_no, 
                                statusData.zone || customer_zone || "", 
                                displayUsername, 
                                adjustedPrice, 
                                product.harga,
                                nickInfo && nickInfo.success ? nickInfo.data.region : null
                            );
                            
                            transactionCompleted = true;
                            break;
                        }
                        // Status masih pending atau processing - lanjutkan polling tanpa memberikan respon
                        else if (statusData.status === 'Pending' || statusData.status === 'Processing') {
                            console.log(`Order ${orderId} masih ${statusData.status}. Menunggu perubahan status...`);
                            continue;
                        }
                        // Status yang tidak dikenali - tetap lanjutkan polling
                        else {
                            console.log(`Status tidak dikenali: ${statusData.status}. Menunggu perubahan status...`);
                            continue;
                        }
                    }
                } catch (error) {
                    console.log("Error checking order status:", error);
                    // Terus mencoba jika terjadi error pada pengecekan
                    await new Promise(resolve => setTimeout(resolve, 10000)); // Tunggu lebih lama jika terjadi error
                }
            }
        } catch (error) { 
            console.log("Transaction processing error:", error);
            m.reply("Terjadi kesalahan saat memproses transaksi. Silakan coba lagi nanti.");
            
            // Kembalikan saldo jika terjadi error
            userSaldo.saldo += adjustedPrice;
            fs.writeFileSync('./db/users.json', JSON.stringify(userData, null, 2));
        }
    }

    // Fungsi untuk menyimpan transaksi ke file trx.json
    function saveTransaction(nomor, status, invoice, item, category, rc, tujuan, zone, username, harga, harga_modal, region = null) {
        try {
            let transactions = [];
            if (fs.existsSync("./db/trx.json")) {
                const rawData = fs.readFileSync("./db/trx.json", "utf8");
                transactions = JSON.parse(rawData);
            }
            
            const newTransaction = {
                nomor: nomor,
                status: status,
                invoice: invoice, 
                item: item,
                category: category, 
                rc: rc,
                tujuan: `${tujuan}${zone ? ' ' + zone : ''}`,
                username: username,
                region: region,
                harga: harga,
                harga_modal: harga_modal,
                waktu: `${time1} | ${hariini}`
            };
            
            transactions.push(newTransaction);
            fs.writeFileSync("./db/trx.json", JSON.stringify(transactions, null, 2));
            return true;
        } catch (error) {
            console.error("Error saving transaction:", error);
            return false;
        }
    }
}
break
case 'n': {
    const nomor = sender.split("@")[0];
    if (!global.pendingTransactions || !global.pendingTransactions[nomor]) {
        return m.reply(`Tidak ada transaksi yang menunggu konfirmasi.`);
    }
    const transaction = global.pendingTransactions[nomor];
    delete global.pendingTransactions[nomor];
    return m.reply(`Transaksi dibatalkan. Terima kasih.`);
}
break;
// =========================================================