From a0797f710480c0d092d0e42f7c99db05ff2ee0d5 Mon Sep 17 00:00:00 2001
From: Vitor Pamplona <vitor@vitorpamplona.com>
Date: Sun, 21 May 2023 20:53:57 -0400
Subject: [PATCH] Fixes NWC with Auth

---
 .../vitorpamplona/amethyst/model/Account.kt   |  7 ++++++-
 .../NostrLnZapPaymentResponseDataSource.kt    | 20 ++++++++++++++++---
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt b/app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt
index 38d71ebda..209a97906 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt
@@ -217,7 +217,12 @@ class Account(
         zapPaymentRequest?.let { nip47 ->
             val event = LnZapPaymentRequestEvent.create(bolt11, nip47.pubKeyHex, nip47.secret?.hexToByteArray() ?: loggedIn.privKey!!)
 
-            val wcListener = NostrLnZapPaymentResponseDataSource(nip47.pubKeyHex, event.pubKey, event.id)
+            val wcListener = NostrLnZapPaymentResponseDataSource(
+                fromServiceHex = nip47.pubKeyHex,
+                toUserHex = event.pubKey,
+                replyingToHex = event.id,
+                authSigningKey = nip47.secret?.hexToByteArray() ?: loggedIn.privKey!!
+            )
             wcListener.start()
 
             LocalCache.consume(event, zappedNote) {
diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrLnZapPaymentResponseDataSource.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrLnZapPaymentResponseDataSource.kt
index 57de8be6e..7993306f5 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrLnZapPaymentResponseDataSource.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrLnZapPaymentResponseDataSource.kt
@@ -1,14 +1,18 @@
 package com.vitorpamplona.amethyst.service
 
 import com.vitorpamplona.amethyst.service.model.LnZapPaymentResponseEvent
+import com.vitorpamplona.amethyst.service.model.RelayAuthEvent
+import com.vitorpamplona.amethyst.service.relays.Client
 import com.vitorpamplona.amethyst.service.relays.FeedType
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
+import com.vitorpamplona.amethyst.service.relays.Relay
 import com.vitorpamplona.amethyst.service.relays.TypedFilter
 
 class NostrLnZapPaymentResponseDataSource(
-    private var fromServiceHex: String,
-    private var toUserHex: String,
-    private var replyingToHex: String
+    private val fromServiceHex: String,
+    private val toUserHex: String,
+    private val replyingToHex: String,
+    private val authSigningKey: ByteArray
 ) : NostrDataSource("LnZapPaymentResponseFeed") {
 
     val feedTypes = setOf(FeedType.WALLET_CONNECT)
@@ -36,4 +40,14 @@ class NostrLnZapPaymentResponseDataSource(
 
         channel.typedFilters = listOfNotNull(wc).ifEmpty { null }
     }
+
+    override fun auth(relay: Relay, challenge: String) {
+        super.auth(relay, challenge)
+
+        val event = RelayAuthEvent.create(relay.url, challenge, authSigningKey)
+        Client.send(
+            event,
+            relay.url
+        )
+    }
 }