fix: qr base64 > qr uri

apps/pay/src/freedom.ts

@@ -25,8 +25,18 @@ export async function getAddressInfoBulk(addresses: string[]): Promise<Record<st
   return res.json();
 }
 
-export function getQrUrl(text: string): string {
-  return `${API}/invoice/qr/${encodeURIComponent(text)}`;
+export async function fetchQrBase64(text: string): Promise<string> {
+  const url = `${API}/invoice/qr/${encodeURIComponent(text)}`;
+  try {
+    const res = await fetch(url);
+    if (!res.ok) return url;
+    const buf = await res.arrayBuffer();
+    const type = res.headers.get("content-type") || "image/png";
+    const b64 = Buffer.from(buf).toString("base64");
+    return `data:${type};base64,${b64}`;
+  } catch {
+    return url;
+  }
 }
 
 export async function getAvailableCoins(): Promise<string[]> {

apps/pay/src/routes.ts

@@ -1,7 +1,7 @@
 import { Elysia, t } from "elysia";
 import sql from "./db";
 import { derive } from "./address";
-import { getExchangeRates, getAvailableCoins, getQrUrl } from "./freedom";
+import { getExchangeRates, getAvailableCoins, fetchQrBase64 } from "./freedom";
 import { PLANS, COINS } from "./plans";
 import { watchPayment } from "./monitor";
 
@@ -121,7 +121,7 @@ export const routes = new Elysia()
       status: payment.status,
       expires_at: payment.expires_at,
       txs: [],
-      qr_url: getQrUrl(uri),
+      qr_url: await fetchQrBase64(uri),
       coin_label: coinInfo.label,
       coin_ticker: coinInfo.ticker,
     };
@@ -170,7 +170,7 @@ export const routes = new Elysia()
       expires_at: payment.expires_at,
       paid_at: payment.paid_at,
       txs: txs.map((t: any) => ({ txid: t.txid, amount: t.amount, confirmed: t.confirmed, detected_at: t.detected_at })),
-      qr_url: getQrUrl(uri),
+      qr_url: await fetchQrBase64(uri),
       coin_label: coinInfo?.label,
       coin_ticker: coinInfo?.ticker,
     };