From ec3c69de3fc135d0d8cc457d650f85621a7a601b Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam@coinos.io>
Date: Sun, 8 Mar 2026 22:23:19 -0700
Subject: add NFC tap-to-pay button on fund detail page

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 src/routes/(app)/fund/[id]/+page.svelte | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'src')

diff --git a/src/routes/(app)/fund/[id]/+page.svelte b/src/routes/(app)/fund/[id]/+page.svelte
index c19db2ac..254e6d31 100644
--- a/src/routes/(app)/fund/[id]/+page.svelte
+++ b/src/routes/(app)/fund/[id]/+page.svelte
@@ -5,6 +5,7 @@
   import PhShareNetworkBold from "virtual:icons/ph/share-network-bold";
   import PhTrashBold from "virtual:icons/ph/trash-bold";
   import PhCopyBold from "virtual:icons/ph/copy-bold";
+  import PhWifiBold from "virtual:icons/ph/wifi-high-bold";
   import Amount from "$comp/Amount.svelte";
   import Payments from "$comp/Payments.svelte";
   import { invalidate } from "$app/navigation";
@@ -30,10 +31,28 @@
   let isManager = $derived(!managers.length || managers.some((m) => m.id === user?.id));
 
   let amountFiat = $derived(parseFloat(((amount * rate) / sats).toFixed(2)));
+
+  let hceActive = $state(false);
+  const Hce = (window as any).Capacitor?.Plugins?.Hce;
+
   $effect(() => {
     $loginRedirect = $page.url.pathname;
   });
 
+  function enableHce() {
+    if (!Hce) return;
+    const url = `${$page.url.origin}/api/lnurlw/${id}`;
+    Hce.setUrl({ url });
+    hceActive = true;
+    toast.push("NFC armed — ready to tap");
+  }
+
+  function disableHce() {
+    if (!Hce) return;
+    Hce.setUrl({ url: "https://coinos.io" });
+    hceActive = false;
+  }
+
   async function deleteAuth(authId: string) {
     try {
       await post(`/fund/${id}/authorization/${authId}/delete`, {});
@@ -103,6 +122,19 @@
           <div class="my-auto">{$t("payments.shareLink")}</div>
         </a>
       </div>
+      {#if Hce && amount > 0}
+        <div class="flex gap-2">
+          <button
+            class="btn grow"
+            class:!bg-green-600={hceActive}
+            class:!text-white={hceActive}
+            onclick={() => hceActive ? disableHce() : enableHce()}
+          >
+            <PhWifiBold width="32" />
+            <div class="my-auto">{hceActive ? "NFC Active — Ready to Tap" : "Enable NFC Tap to Pay"}</div>
+          </button>
+        </div>
+      {/if}
       {#if isManager && authorizations.length}
         <div class="space-y-2">
           <div class="font-bold text-lg">{$t("funds.authorizations")}</div>
-- 
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