// CaMbaw - Durable.co Server Payment Listener const express = require("express"); const cors = require("cors"); const fetch = require("node-fetch"); const app = express(); app.use(cors()); app.use(express.json()); // === CONFIGURATION === const TPW_SECRET_KEY = "c9077bd25ce61c5c5b5e8e730238f162e7b62e6307993f35b96e0b5671ce98e1"; const APPLICATION_ID = "fd675e6b-5ad5-4ba0-8be6-fecb95ec5700"; const TPW_BASE_URL = "https://mobilewallet.trustpayway.com/api"; const INITIATION_WEBHOOK = "https://hook.eu2.make.com/1xobr3t0bs1pdgnlgsnjyc79mab886k7"; const PAYMENT_STATUS_WEBHOOK = "https://hook.eu2.make.com/smwdcmflx1fulgqwwpv18vsjgd8f8dkp"; // === Function: Get TrustPayWay Bearer Token === async function getBearerToken() { const res = await fetch(`${TPW_BASE_URL}/login`, { method: "POST", headers: { "Content-Type": "application/json", Authorization: `Bearer ${TPW_SECRET_KEY}` }, body: JSON.stringify({ applicationId: APPLICATION_ID }) }); const data = await res.json(); if (!res.ok || !data.access_token) { throw new Error(data.message || "Failed to obtain access token"); } return data.access_token; } // === Endpoint: Handle Payment Request === app.post("/initiate-payment", async (req, res) => { const { uuid, method, number } = req.body; if (!uuid || !method || !number) { return res.status(400).json({ error: "Missing uuid, method, or number" }); } const amount = 500; // Fixed amount const orderId = `ORD-${Date.now()}-${Math.floor(Math.random() * 10000)}`; const network = method.toLowerCase().includes("mtn") ? "mtn" : "orange"; try { // Step 1: Notify initiation webhook await fetch(INITIATION_WEBHOOK, { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ uuid, orderId }) }); // Step 2: Get bearer token const token = await getBearerToken(); // Step 3: Process payment const paymentRes = await fetch(`${TPW_BASE_URL}/${network}/process-payment`, { method: "POST", headers: { "Content-Type": "application/json", Authorization: `Bearer ${token}` }, body: JSON.stringify({ amount: amount.toString(), currency: "XAF", subscriberMsisdn: number, description: "CaMbaw activation", orderId, notifUrl: PAYMENT_STATUS_WEBHOOK }) }); const paymentData = await paymentRes.json(); if (!paymentRes.ok || !paymentData?.data?.transaction_id) { return res.status(400).json({ error: "Payment initiation failed", details: paymentData }); } // Step 4: Respond to client res.json({ message: "Payment initiated. Please confirm on your phone.", orderId, transactionId: paymentData.data.transaction_id }); } catch (error) { console.error("Payment error:", error.message); res.status(500).json({ error: "Server error", message: error.message }); } }); // === Start Express Server === const PORT = process.env.PORT || 3000; app.listen(PORT, () => { console.log(`🚀 CaMbaw Payment Server running at http://localhost:${PORT}`); });