"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.createCheckout = createCheckout;
exports.getTransaction = getTransaction;
exports.refundTransaction = refundTransaction;
exports.verifyWebhookSignature = verifyWebhookSignature;
exports.isConfigured = isConfigured;
const crypto_1 = __importDefault(require("crypto"));
const BASE_URL = process.env.AMANPAY_BASE_URL ?? 'https://api.amanpay.net';
const MERCHANT_ID = process.env.AMANPAY_MERCHANT_ID ?? '';
const SECRET_KEY = process.env.AMANPAY_SECRET_KEY ?? '';
const WEBHOOK_SECRET = process.env.AMANPAY_WEBHOOK_SECRET ?? '';
async function getAuthHeaders() {
    return {
        'Content-Type': 'application/json',
        'x-merchant-id': MERCHANT_ID,
        'x-api-key': SECRET_KEY,
    };
}
async function createCheckout(params) {
    const res = await fetch(`${BASE_URL}/v1/payments`, {
        method: 'POST',
        headers: await getAuthHeaders(),
        body: JSON.stringify({
            merchant_id: MERCHANT_ID,
            amount: params.amount,
            currency: params.currency,
            order_id: params.orderId,
            description: params.description,
            customer_email: params.customerEmail,
            customer_name: params.customerName,
            success_url: params.successUrl,
            failure_url: params.failureUrl,
            webhook_url: params.webhookUrl,
        }),
    });
    if (!res.ok) {
        const err = await res.json().catch(() => ({}));
        throw new Error(`AmanPay checkout failed: ${err?.message ?? res.statusText}`);
    }
    const json = await res.json();
    return {
        transactionId: (json.transaction_id ?? json.id),
        checkoutUrl: (json.checkout_url ?? json.payment_url),
        status: (json.status ?? 'PENDING'),
    };
}
async function getTransaction(transactionId) {
    const res = await fetch(`${BASE_URL}/v1/payments/${transactionId}`, {
        headers: await getAuthHeaders(),
    });
    if (!res.ok)
        throw new Error('AmanPay: failed to fetch transaction');
    return res.json();
}
async function refundTransaction(transactionId, amount, reason) {
    const res = await fetch(`${BASE_URL}/v1/payments/${transactionId}/refund`, {
        method: 'POST',
        headers: await getAuthHeaders(),
        body: JSON.stringify({ amount, reason }),
    });
    if (!res.ok) {
        const err = await res.json().catch(() => ({}));
        throw new Error(`AmanPay refund failed: ${err?.message ?? res.statusText}`);
    }
    return res.json();
}
function verifyWebhookSignature(rawBody, signature) {
    if (!WEBHOOK_SECRET)
        return false;
    const expected = crypto_1.default
        .createHmac('sha256', WEBHOOK_SECRET)
        .update(rawBody)
        .digest('hex');
    return crypto_1.default.timingSafeEqual(Buffer.from(signature), Buffer.from(expected));
}
function isConfigured() {
    return !!(MERCHANT_ID && SECRET_KEY && MERCHANT_ID !== 'your-amanpay-merchant-id');
}
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