From 3bbd777fe12abbe6cd3d02396fb6631e76feeb9b Mon Sep 17 00:00:00 2001
From: Alexander Schmidt <alexander@schmidt.eco>
Date: Wed, 11 Feb 2026 17:54:00 +0100
Subject: [PATCH] refactor: simplify listing fee to fixed 1 USD, remove
 multi-currency logic

---
 docs/pow-server/btcpay-invoice.php | 14 ++------------
 docs/pow-server/config.php         |  3 ++-
 js/components/pages/page-create.js |  2 +-
 js/services/btcpay.js              |  5 ++---
 4 files changed, 7 insertions(+), 17 deletions(-)

diff --git a/docs/pow-server/btcpay-invoice.php b/docs/pow-server/btcpay-invoice.php
index f15d43d..c279332 100644
--- a/docs/pow-server/btcpay-invoice.php
+++ b/docs/pow-server/btcpay-invoice.php
@@ -10,7 +10,6 @@ if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
 $input = json_decode(file_get_contents('php://input'), true);
 
 $listingId = $input['listingId'] ?? null;
-$currency = $input['currency'] ?? 'EUR';
 
 if (!$listingId) {
     http_response_code(400);
@@ -18,18 +17,9 @@ if (!$listingId) {
     exit;
 }
 
-$fees = LISTING_FEE;
-if (!isset($fees[$currency])) {
-    http_response_code(400);
-    echo json_encode(['error' => 'Unsupported currency', 'supported' => array_keys($fees)]);
-    exit;
-}
-
-$amount = $fees[$currency];
-
 $payload = json_encode([
-    'amount' => $amount,
-    'currency' => $currency,
+    'amount' => LISTING_FEE,
+    'currency' => LISTING_FEE_CURRENCY,
     'metadata' => [
         'listingId' => $listingId,
         'orderId' => 'listing-' . $listingId,
diff --git a/docs/pow-server/config.php b/docs/pow-server/config.php
index cc036ac..0c1c049 100644
--- a/docs/pow-server/config.php
+++ b/docs/pow-server/config.php
@@ -7,7 +7,8 @@ define('BTCPAY_BASE_URL', getenv('BTCPAY_BASE_URL') ?: 'https://pay.xmr.rocks');
 define('BTCPAY_API_KEY', getenv('BTCPAY_API_KEY') ?: 'CHANGE_ME');
 define('BTCPAY_STORE_ID', getenv('BTCPAY_STORE_ID') ?: 'CHANGE_ME');
 define('BTCPAY_WEBHOOK_SECRET', getenv('BTCPAY_WEBHOOK_SECRET') ?: '');
-define('LISTING_FEE', ['EUR' => 1, 'USD' => 1, 'CHF' => 1, 'GBP' => 1, 'JPY' => 200]);
+define('LISTING_FEE', 1);
+define('LISTING_FEE_CURRENCY', 'USD');
 
 define('DIRECTUS_URL', getenv('DIRECTUS_URL') ?: 'https://api.kashilo.com');
 define('DIRECTUS_TOKEN', getenv('DIRECTUS_TOKEN') ?: 'CHANGE_ME');
diff --git a/js/components/pages/page-create.js b/js/components/pages/page-create.js
index 745f52c..9ae49a2 100644
--- a/js/components/pages/page-create.js
+++ b/js/components/pages/page-create.js
@@ -723,7 +723,7 @@ class PageCreate extends HTMLElement {
 
             if (!invoiceId) {
                 if (submitBtn) submitBtn.textContent = t('payment.paying')
-                const invoice = await createInvoice(listingId, currency)
+                const invoice = await createInvoice(listingId)
                 invoiceId = invoice.invoiceId
                 savePendingInvoice(listingId, invoiceId)
 
diff --git a/js/services/btcpay.js b/js/services/btcpay.js
index 432cb65..52dbfbd 100644
--- a/js/services/btcpay.js
+++ b/js/services/btcpay.js
@@ -29,14 +29,13 @@ async function ensureModalLoaded() {
 /**
  * Create a payment invoice for a listing
  * @param {string} listingId - The listing UUID
- * @param {string} [currency='EUR'] - Payment currency
  * @returns {Promise<Object>} { invoiceId, checkoutLink, status, expirationTime }
  */
-export async function createInvoice(listingId, currency = 'EUR') {
+export async function createInvoice(listingId) {
     const response = await fetch(`${POW_SERVER}/btcpay/invoice`, {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({ listingId, currency })
+        body: JSON.stringify({ listingId })
     })
 
     if (!response.ok) {