From 4767b94f24ad19db7878d0cd6e7b7ec90d4d80ec Mon Sep 17 00:00:00 2001
From: FabioPinheiro <fabiomgpinheiro@gmail.com>
Date: Tue, 19 Dec 2023 15:44:56 +0000
Subject: [PATCH] handle exceptions

---
 .../atala/pollux/anoncreds/AnoncredLib.scala  | 38 +++++++++++--------
 .../atala/pollux/anoncreds/PoCNewLib.scala    |  4 +-
 2 files changed, 24 insertions(+), 18 deletions(-)

diff --git a/pollux/lib/anoncreds/src/main/scala/io/iohk/atala/pollux/anoncreds/AnoncredLib.scala b/pollux/lib/anoncreds/src/main/scala/io/iohk/atala/pollux/anoncreds/AnoncredLib.scala
index aa6e49ebda..9bd681714c 100644
--- a/pollux/lib/anoncreds/src/main/scala/io/iohk/atala/pollux/anoncreds/AnoncredLib.scala
+++ b/pollux/lib/anoncreds/src/main/scala/io/iohk/atala/pollux/anoncreds/AnoncredLib.scala
@@ -146,23 +146,29 @@ object AnoncredLib {
       linkSecret: LinkSecret,
       schemas: Map[SchemaId, SchemaDef],
       credentialDefinitions: Map[CredentialDefinitionId, CredentialDefinition],
-  ): Presentation = {
-    uniffi.anoncreds_wrapper
-      .Prover()
-      .createPresentation(
-        presentationRequest, // uniffi.anoncreds
-        credentialRequests
-          .map(i => i: uniffi.anoncreds_wrapper.CredentialRequests)
-          .asJava, // sequence<Credential> credentials,
-        selfAttested.asJava, // record<string, string>? self_attested,
-        linkSecret, // LinkSecret link_secret,
-        schemas.view
-          .mapValues(i => i: uniffi.anoncreds_wrapper.Schema)
-          .toMap
-          .asJava, // record<SchemaId, Schema> schemas,
-        credentialDefinitions.view.mapValues(i => i: uniffi.anoncreds_wrapper.CredentialDefinition).toMap.asJava
-        // record<CredentialDefinitionId, CredentialDefinition> credential_definitions
+  ): Either[uniffi.anoncreds_wrapper.AnoncredsException.CreatePresentationException, Presentation] = {
+    try {
+      Right(
+        uniffi.anoncreds_wrapper
+          .Prover()
+          .createPresentation(
+            presentationRequest, // uniffi.anoncreds
+            credentialRequests
+              .map(i => i: uniffi.anoncreds_wrapper.CredentialRequests)
+              .asJava, // sequence<Credential> credentials,
+            selfAttested.asJava, // record<string, string>? self_attested,
+            linkSecret, // LinkSecret link_secret,
+            schemas.view
+              .mapValues(i => i: uniffi.anoncreds_wrapper.Schema)
+              .toMap
+              .asJava, // record<SchemaId, Schema> schemas,
+            credentialDefinitions.view.mapValues(i => i: uniffi.anoncreds_wrapper.CredentialDefinition).toMap.asJava
+            // record<CredentialDefinitionId, CredentialDefinition> credential_definitions
+          )
       )
+    } catch {
+      case ex: uniffi.anoncreds_wrapper.AnoncredsException.CreatePresentationException => Left(ex)
+    }
   }
 
   // TODO FIX
diff --git a/pollux/lib/anoncredsTest/src/test/scala/io/iohk/atala/pollux/anoncreds/PoCNewLib.scala b/pollux/lib/anoncredsTest/src/test/scala/io/iohk/atala/pollux/anoncreds/PoCNewLib.scala
index ed5401aed4..7172e28ea7 100644
--- a/pollux/lib/anoncredsTest/src/test/scala/io/iohk/atala/pollux/anoncreds/PoCNewLib.scala
+++ b/pollux/lib/anoncredsTest/src/test/scala/io/iohk/atala/pollux/anoncreds/PoCNewLib.scala
@@ -98,7 +98,7 @@ class PoCNewLib extends AnyFlatSpec {
             "sex":{"name":"sex", "restrictions":{"attr::sex::value":"M","cred_def_id":"$CRED_DEF_ID"}}
         },
         "requested_predicates":{
-          "age":{"name":"age", "p_type":">=", "p_value":32}
+          "age":{"name":"age", "p_type":">=", "p_value":18}
         }
        }""".stripMargin
 
@@ -122,7 +122,7 @@ class PoCNewLib extends AnyFlatSpec {
 
     println("*** PROVER " + ("*" * 100) + " verifyPresentation")
     val verifyPresentation = AnoncredLib.verifyPresentation(
-      presentation, // : Presentation,
+      presentation.getOrElse(???), // : Presentation,
       presentationRequest, // : PresentationRequest,
       Map(credentialOffer.schemaId -> schema), // schemas: Map[SchemaId, SchemaDef],
       Map(