fix android webview fallback (#160)

Author: kalinjul

oidc-appsupport/src/androidMain/kotlin/org/publicvalue/multiplatform/oidc/appsupport/AndroidCodeAuthFlowFactory.kt

@@ -94,7 +94,7 @@ class AndroidCodeAuthFlowFactory(
             presentPreferredProviders.firstOrNull()
         } else customTabProviders.firstOrNull()
 
-        val webFlow = if (useWebView) {
+        val webFlow = if (useWebView || preferredBrowserPackage == null) {
             WebViewFlow(
                 context = context,
                 contract = activityResultLauncher,

oidc-appsupport/src/androidMain/kotlin/org/publicvalue/multiplatform/oidc/appsupport/HandleRedirectActivity.kt

@@ -67,6 +67,7 @@ class HandleRedirectActivity : ComponentActivity() {
                             runBlocking {
                                 preferences.setResponseUri(Url(requestedUrl.toString()))
                             }
+                            setResult(RESULT_OK, Intent().setData(intent?.data))
                             finish()
                             true
                         } else {
@@ -173,13 +174,8 @@ class HandleRedirectActivity : ComponentActivity() {
             if (CustomTabsClient.isEphemeralBrowsingSupported(this, preferredBrowserPackage)) {
                 builder.setEphemeralBrowsingEnabled(ephemeralSession ?: false)
             }
-        } else {
-            // If custom tabs are not available, fallback to WebView
-            showWebView(url, redirectUrl, ephemeralSession ?: false)
-            return
         }
 
-
         val intent = builder.build()
 
         preferredBrowserPackage.let { intent.intent.setPackage(it) }

oidc-appsupport/src/androidMain/kotlin/org/publicvalue/multiplatform/oidc/appsupport/customtab/CustomTabFlow.kt

@@ -18,7 +18,7 @@ internal class CustomTabFlow(
     private val context: Context,
     private val contract: ActivityResultLauncherSuspend<Intent, ActivityResult>,
     private val epheremalSession: Boolean,
-    private val preferredBrowserPackage: String?,
+    private val preferredBrowserPackage: String,
 ): WebAuthenticationFlow {
     override suspend fun startWebFlow(requestUrl: Url, redirectUrl: String): WebAuthenticationFlowResult {
         val intent = prepareIntent(requestUrl = requestUrl.toString(), redirectUrl = redirectUrl)