Update credential selection when presenting (#72)

This skips the credential selection page when only one credential matches the OID4VP request.
spruceid · Dec 20, 2024 · 15815eb · 15815eb
1 parent 1c00769
commit 15815eb
Show file tree

Hide file tree

Showing 2 changed files with 21 additions and 5 deletions.
diff --git a/example/build.gradle.kts b/example/build.gradle.kts
@@ -12,8 +12,8 @@ android {
         applicationId = "com.spruceid.mobilesdkexample"
         minSdk = 26
         targetSdk = 34
-        versionCode = 20
-        versionName = "1.3.0"
+        versionCode = 22
+        versionName = "1.3.2"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {

diff --git a/example/src/main/java/com/spruceid/mobilesdkexample/wallet/HandleOID4VPView.kt b/example/src/main/java/com/spruceid/mobilesdkexample/wallet/HandleOID4VPView.kt
@@ -76,11 +76,16 @@ import kotlinx.coroutines.withContext
 import org.json.JSONObject
 
 class Signer(keyId: String?) : PresentationSigner {
-    private val keyId = if (keyId == null) "reference-app/default-signing" else keyId
+    private val keyId = keyId ?: "reference-app/default-signing"
     private val keyManager = KeyManager()
-    private val jwk = keyManager.getJwk(this.keyId) ?: throw IllegalArgumentException("Invalid kid")
+    private var jwk: String
     private val didJwk = DidMethodUtils(DidMethod.JWK)
 
+    init {
+        keyManager.generateSigningKey(id = this.keyId)
+        this.jwk = keyManager.getJwk(this.keyId) ?: throw IllegalArgumentException("Invalid kid")
+    }
+
     override suspend fun sign(payload: ByteArray): ByteArray {
         val signature =
             keyManager.signPayload(keyId, payload)
@@ -151,7 +156,18 @@ fun HandleOID4VPView(
                         getVCPlaygroundOID4VCIContext(ctx)
                     )
                 val newurl = url.replace("authorize", "")
-                permissionRequest = holder!!.authorizationRequest(newurl)
+                val tempPermissionRequest = holder!!.authorizationRequest(newurl)
+                val permissionRequestCredentials = tempPermissionRequest.credentials()
+
+                if (permissionRequestCredentials.count() == 1) {
+                    selectedCredential = permissionRequestCredentials.first()
+                    permissionResponse =
+                        tempPermissionRequest.createPermissionResponse(
+                            permissionRequestCredentials
+                        )
+                }
+
+                permissionRequest = tempPermissionRequest
             }
         } catch (e: Exception) {
             err = e.localizedMessage