From 8ff11a2380cfd8038384bd4e5028f336ce408aec Mon Sep 17 00:00:00 2001
From: benalleng <benalleng@gmail.com>
Date: Sat, 30 Sep 2023 21:55:53 -0400
Subject: [PATCH] feat: Add payjoin sends

---
 src/i18n/en/translations.ts |  2 ++
 src/logic/waila.ts          |  4 ++++
 src/routes/Send.tsx         | 21 ++++++++++++++++++++-
 src/state/megaStore.tsx     |  1 +
 4 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/src/i18n/en/translations.ts b/src/i18n/en/translations.ts
index e42fa0b5..120f9e8f 100644
--- a/src/i18n/en/translations.ts
+++ b/src/i18n/en/translations.ts
@@ -138,6 +138,8 @@ export default {
         error_keysend: "Keysend failed",
         error_LNURL: "LNURL Pay failed",
         error_expired: "Invoice is expired",
+        payjoin_send:
+            "This is a payjoin! The Mutiny will continue until privacy improves",
         payment_pending: "Payment pending",
         payment_pending_description:
             "It's taking a while, but it's possible this payment may still go through. Please check 'Activity' for the current status.",
diff --git a/src/logic/waila.ts b/src/logic/waila.ts
index 20b1a407..d2a29b72 100644
--- a/src/logic/waila.ts
+++ b/src/logic/waila.ts
@@ -6,7 +6,9 @@ import { Result } from "~/utils";
 await initWaila();
 
 export type ParsedParams = {
+    original: string;
     address?: string;
+    payjoin_enabled?: boolean;
     invoice?: string;
     amount_sats?: bigint;
     network?: string;
@@ -53,7 +55,9 @@ export function toParsedParams(
     return {
         ok: true,
         value: {
+            original: str,
             address: params.address,
+            payjoin_enabled: params.payjoin_supported,
             invoice: params.invoice,
             amount_sats: params.amount_sats,
             network,
diff --git a/src/routes/Send.tsx b/src/routes/Send.tsx
index 76ed6117..cedac967 100644
--- a/src/routes/Send.tsx
+++ b/src/routes/Send.tsx
@@ -261,7 +261,9 @@ export function Send() {
     const [nodePubkey, setNodePubkey] = createSignal<string>();
     const [lnurlp, setLnurlp] = createSignal<string>();
     const [lnAddress, setLnAddress] = createSignal<string>();
+    const [originalScan, setOriginalScan] = createSignal<string>();
     const [address, setAddress] = createSignal<string>();
+    const [payjoinEnabled, setPayjoinEnabled] = createSignal<boolean>();
     const [description, setDescription] = createSignal<string>();
     const [contactId, setContactId] = createSignal<string>();
     const [isHodlInvoice, setIsHodlInvoice] = createSignal<boolean>(false);
@@ -414,9 +416,11 @@ export function Send() {
     function handleDestination(source: ParsedParams | undefined) {
         if (!source) return;
         setParsingDestination(true);
-
+        setOriginalScan(source.original);
         try {
             if (source.address) setAddress(source.address);
+            if (source.payjoin_enabled)
+                setPayjoinEnabled(source.payjoin_enabled);
             if (source.memo) setDescription(source.memo);
             if (source.contact_id) setContactId(source.contact_id);
 
@@ -594,6 +598,16 @@ export function Send() {
                         tags
                     );
 
+                    sentDetails.amount = amountSats();
+                    sentDetails.destination = address();
+                    sentDetails.txid = txid;
+                    sentDetails.fee_estimate = feeEstimate() ?? 0;
+                } else if (payjoinEnabled()) {
+                    const txid = await state.mutiny_wallet?.send_payjoin(
+                        originalScan()!,
+                        amountSats(),
+                        tags
+                    );
                     sentDetails.amount = amountSats();
                     sentDetails.destination = address();
                     sentDetails.txid = txid;
@@ -789,6 +803,11 @@ export function Send() {
                             setChosenMethod={setSourceFromMethod}
                         />
                     </Show>
+                    <Show when={payjoinEnabled()}>
+                        <InfoBox accent="green">
+                            <p>{i18n.t("send.payjoin_send")}</p>
+                        </InfoBox>
+                    </Show>
                     <Show when={!isAmtEditable()}>
                         <AmountEditable
                             initialAmountSats={amountSats()}
diff --git a/src/state/megaStore.tsx b/src/state/megaStore.tsx
index f4f11e7a..68c90417 100644
--- a/src/state/megaStore.tsx
+++ b/src/state/megaStore.tsx
@@ -369,6 +369,7 @@ export const Provider: ParentComponent = (props) => {
             } else {
                 if (
                     result.value?.address ||
+                    result.value?.payjoin_enabled ||
                     result.value?.invoice ||
                     result.value?.node_pubkey ||
                     (result.value?.lnurl && !result.value.is_lnurl_auth)