Finishes the payment database

app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt

@@ -20,6 +20,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 import nostr.postr.Persona
+import nostr.postr.Utils
 import java.math.BigDecimal
 import java.util.Locale
 
@@ -171,6 +172,12 @@ class Account(
         return zapPaymentRequest != null
     }
 
+    fun isNIP47Author(pubkeyHex: String?): Boolean {
+        val privKey = zapPaymentRequest?.secret?.toByteArray() ?: loggedIn.privKey!!
+        val pubKey = Utils.pubkeyCreate(privKey).toHexKey()
+        return (pubKey == pubkeyHex)
+    }
+
     fun decryptZapPaymentResponseEvent(zapResponseEvent: LnZapPaymentResponseEvent): Response? {
         val myNip47 = zapPaymentRequest ?: return null
         return zapResponseEvent.response(
@@ -203,7 +210,7 @@ class Account(
                 // After the response is received.
                 val privKey = nip47.secret?.toByteArray()
                 if (privKey != null) {
-                    onResponse(it.response(privKey, event.pubKey.toByteArray()))
+                    onResponse(it.response(privKey, nip47.pubKeyHex.toByteArray()))
                 }
             }
 

app/src/main/java/com/vitorpamplona/amethyst/model/Note.kt

@@ -236,7 +236,7 @@ open class Note(val idHex: String) {
             } else {
                 null
             }
-            response is PayInvoiceSuccessResponse && zapResponseEvent?.requestAuthor() == user.pubkeyHex
+            response is PayInvoiceSuccessResponse && account.isNIP47Author(zapResponseEvent?.requestAuthor())
         }
     }
 

app/src/main/java/com/vitorpamplona/amethyst/service/model/Event.kt

@@ -207,6 +207,7 @@ open class Event(
             .registerTypeAdapter(Event::class.java, EventDeserializer())
             .registerTypeAdapter(ByteArray::class.java, ByteArraySerializer())
             .registerTypeAdapter(ByteArray::class.java, ByteArrayDeserializer())
+            .registerTypeAdapter(Response::class.java, ResponseDeserializer())
             .create()
 
         fun fromJson(json: String, lenient: Boolean = false): Event = gson.fromJson(json, Event::class.java).getRefinedEvent(lenient)

app/src/main/java/com/vitorpamplona/amethyst/service/model/LnZapPaymentResponseEvent.kt

@@ -1,9 +1,14 @@
 package com.vitorpamplona.amethyst.service.model
 
 import android.util.Log
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.JsonParseException
 import com.google.gson.annotations.SerializedName
 import com.vitorpamplona.amethyst.model.HexKey
 import nostr.postr.Utils
+import java.lang.reflect.Type
 
 class LnZapPaymentResponseEvent(
     id: HexKey,
@@ -35,8 +40,13 @@ class LnZapPaymentResponseEvent(
     }
 
     fun response(privKey: ByteArray, pubKey: ByteArray): Response? = try {
+        println("Response Arrived: Decrypting")
         if (content.isNotEmpty()) {
-            gson.fromJson(decrypt(privKey, pubKey), Response::class.java)
+            val decrypted = decrypt(privKey, pubKey)
+            println("Response Arrived: Parsing $decrypted")
+            val response = gson.fromJson(decrypted, Response::class.java)
+            println("Response Arrived: Decrypted ${response?.resultType}")
+            response
         } else {
             null
         }
@@ -58,7 +68,7 @@ abstract class Response(
 
 // PayInvoice Call
 
-class PayInvoiceSuccessResponse(val result: PayInvoiceResultParams) :
+class PayInvoiceSuccessResponse(val result: PayInvoiceResultParams? = null) :
     Response("pay_invoice") {
     class PayInvoiceResultParams(val preimage: String)
 }
@@ -86,3 +96,39 @@ class PayInvoiceErrorResponse(val error: PayInvoiceErrorParams? = null) :
         OTHER // Other error.
     }
 }
+
+class ResponseDeserializer :
+    JsonDeserializer<Response?> {
+    @Throws(JsonParseException::class)
+    override fun deserialize(
+        json: JsonElement,
+        typeOfT: Type,
+        context: JsonDeserializationContext
+    ): Response? {
+        val jsonObject = json.asJsonObject
+        val resultType = jsonObject.get("result_type")?.asString
+
+        if (resultType == "pay_invoice") {
+            val result = jsonObject.get("result")?.asJsonObject
+            val error = jsonObject.get("error")?.asJsonObject
+            if (result != null) {
+                return context.deserialize<PayInvoiceSuccessResponse>(jsonObject, PayInvoiceSuccessResponse::class.java)
+            }
+            if (error != null) {
+                return context.deserialize<PayInvoiceErrorResponse>(jsonObject, PayInvoiceErrorResponse::class.java)
+            }
+        } else {
+            // tries to guess
+            if (jsonObject.get("result")?.asJsonObject?.get("preimage") != null) {
+                return context.deserialize<PayInvoiceSuccessResponse>(jsonObject, PayInvoiceSuccessResponse::class.java)
+            }
+            if (jsonObject.get("error")?.asJsonObject?.get("code") != null) {
+                return context.deserialize<PayInvoiceErrorResponse>(jsonObject, PayInvoiceErrorResponse::class.java)
+            }
+        }
+        return null
+    }
+
+    companion object {
+    }
+}