fix(onramp/deeplinks): show "No Internet" alert instead of generic error for network failures

Preserve the original throwable as `cause` in FailedToCreateTransaction and
FailedToSimulateTransaction so the handler can detect network errors
(UnknownHostException, ConnectException, TimeoutException) and show
the standard "No Internet Connection" alert instead of a confusing
"Something Went Wrong" error. Network-caused failures are also excluded
from Bugsnag via the existing isAlert guard.

Signed-off-by: Brandon McAnsh <git@bmcreations.dev>

Author: bmc08gt

apps/flipcash/shared/onramp/deeplinks/src/main/kotlin/com/flipcash/app/onramp/DeeplinkOnRampErrors.kt

@@ -9,11 +9,15 @@ sealed class DeeplinkOnRampError(
     class FailedToGenerateDeeplink(
         override val message: String? = null
     ) : DeeplinkOnRampError(message = message)
-    class FailedToCreateTransaction(override val message: String?) :
-        DeeplinkOnRampError(message = message)
+    class FailedToCreateTransaction(
+        override val message: String?,
+        override val cause: Throwable? = null
+    ) : DeeplinkOnRampError(message = message, cause = cause)
 
-    class FailedToSimulateTransaction(override val message: String?) :
-        DeeplinkOnRampError(message = message)
+    class FailedToSimulateTransaction(
+        override val message: String?,
+        override val cause: Throwable? = null
+    ) : DeeplinkOnRampError(message = message, cause = cause)
 
     class FailedToSendTransaction(
         override val code: Long = -99,

apps/flipcash/shared/onramp/deeplinks/src/main/kotlin/com/flipcash/app/onramp/ExternalWalletOnRampController.kt

@@ -157,7 +157,7 @@ class ExternalWalletOnRampController @Inject constructor(
         val fee = _feeAmount.value ?: LocalFiat.Zero
 
         createUsdcToUsdfSwapTransaction(state, amount)
-            .onFailure { fail(DeeplinkOnRampError.FailedToCreateTransaction(message = it.message), state) }
+            .onFailure { fail(DeeplinkOnRampError.FailedToCreateTransaction(message = it.message, cause = it), state) }
             .fold(
                 onSuccess = { (transaction, swapId) ->
                     withContext(Dispatchers.IO) {
@@ -170,7 +170,7 @@ class ExternalWalletOnRampController @Inject constructor(
                 },
                 onFailure = { Result.failure(it) }
             )
-            .onFailure { fail(DeeplinkOnRampError.FailedToSimulateTransaction(message = it.message), state) }
+            .onFailure { fail(DeeplinkOnRampError.FailedToSimulateTransaction(message = it.message, cause = it), state) }
             .onSuccess { (transaction, swapId) ->
                 transitionTo(
                     ExternalWalletOnRampState.Signing(
@@ -195,7 +195,7 @@ class ExternalWalletOnRampController @Inject constructor(
         val fee = _feeAmount.value ?: LocalFiat.Zero
 
         createDepositTransaction(state, amount)
-            .onFailure { fail(DeeplinkOnRampError.FailedToCreateTransaction(message = it.message), state) }
+            .onFailure { fail(DeeplinkOnRampError.FailedToCreateTransaction(message = it.message, cause = it), state) }
             .fold(
                 onSuccess = { transaction ->
                     withContext(Dispatchers.IO) {
@@ -208,7 +208,7 @@ class ExternalWalletOnRampController @Inject constructor(
                 },
                 onFailure = { Result.failure(it) }
             )
-            .onFailure { fail(DeeplinkOnRampError.FailedToSimulateTransaction(message = it.message), state) }
+            .onFailure { fail(DeeplinkOnRampError.FailedToSimulateTransaction(message = it.message, cause = it), state) }
             .onSuccess { transaction ->
                 transitionTo(
                     ExternalWalletOnRampState.Signing(

apps/flipcash/shared/onramp/deeplinks/src/main/kotlin/com/flipcash/app/onramp/ExternalWalletOnRampHandler.kt

@@ -25,6 +25,7 @@ import com.getcode.manager.BottomBarManager
 import com.getcode.navigation.core.CodeNavigator
 import com.getcode.util.permissions.rememberNotificationPermission
 import com.getcode.utils.TraceType
+import com.getcode.utils.isNetworkError
 import com.getcode.utils.trace
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
@@ -296,18 +297,28 @@ fun ExternalWalletOnRampHandler(
                     controller.reset()
                 }
 
-                if (error.isAlert) {
-                    BottomBarManager.showAlert(
-                        title = title,
-                        message = message,
-                        onDismiss = { onDismiss()  },
-                    )
-                } else {
-                    BottomBarManager.showError(
-                        title = title,
-                        message = message,
-                        onDismiss = { onDismiss()  },
-                    )
+                when {
+                    error.isNetworkCause -> {
+                        BottomBarManager.showAlert(
+                            title = resources.getString(R.string.error_title_noInternet),
+                            message = resources.getString(R.string.error_description_noInternet),
+                            onDismiss = { onDismiss() },
+                        )
+                    }
+                    error.isAlert -> {
+                        BottomBarManager.showAlert(
+                            title = title,
+                            message = message,
+                            onDismiss = { onDismiss() },
+                        )
+                    }
+                    else -> {
+                        BottomBarManager.showError(
+                            title = title,
+                            message = message,
+                            onDismiss = { onDismiss() },
+                        )
+                    }
                 }
             }
         }
@@ -325,6 +336,12 @@ private val DeeplinkOnRampError.isAlert: Boolean
         DeeplinkError.Disconnected,
         DeeplinkError.TransactionRejected,
     ) || this is DeeplinkOnRampError.FailedToSendTransaction
+        || (this is DeeplinkOnRampError.FailedToSimulateTransaction && cause?.isNetworkError() == true)
+        || (this is DeeplinkOnRampError.FailedToCreateTransaction && cause?.isNetworkError() == true)
+
+private val DeeplinkOnRampError.isNetworkCause: Boolean
+    get() = (this is DeeplinkOnRampError.FailedToSimulateTransaction || this is DeeplinkOnRampError.FailedToCreateTransaction)
+        && cause?.isNetworkError() == true
 
 private typealias Title = String
 private typealias Message = String

libs/logging/src/main/kotlin/com/getcode/utils/ErrorUtils.kt

@@ -112,6 +112,11 @@ object ErrorUtils {
         throwable is SQLException || throwable is SuppressibleException || throwable is TimeoutCancellationException
 }
 
+fun Throwable.isNetworkError(): Boolean =
+    this is UnknownHostException || cause is UnknownHostException ||
+    this is ConnectException || cause is ConnectException ||
+    this is TimeoutException || cause is TimeoutException
+
 data class SuppressibleException(override val message: String, override val cause: Throwable? = null) : Throwable(message, cause) {
     constructor(cause: Throwable) : this(cause.message.orEmpty(), cause)
 }