fix: gracefully handling patching on a app with no releases (#2247)

Co-authored-by: Bryan Oltman <bryan@shorebird.dev>

packages/shorebird_cli/lib/src/commands/patch/patch_command.dart

@@ -308,6 +308,14 @@ NOTE: this is ${styleBold.wrap('not')} recommended. Asset changes cannot be incl
     final releases = await codePushClientWrapper.getReleases(
       appId: appId,
     );
+
+    if (releases.isEmpty) {
+      logger.warn(
+        '''No releases found for app $appId. You need to make first a release before you can create a patch.''',
+      );
+      throw ProcessExit(ExitCode.usage.code);
+    }
+
     return logger.chooseOne<Release>(
       'Which release would you like to patch?',
       choices: releases.sortedBy((r) => r.createdAt).reversed.toList(),

packages/shorebird_cli/test/src/commands/patch/patch_command_test.dart

@@ -678,6 +678,27 @@ void main() {
         );
       });
 
+      group('when prompting for releases, but there is none', () {
+        setUp(() {
+          when(
+            () => codePushClientWrapper.getReleases(appId: any(named: 'appId')),
+          ).thenAnswer((_) async => []);
+        });
+
+        test('warns and exits', () async {
+          await expectLater(
+            () => runWithOverrides(command.run),
+            exitsWithCode(ExitCode.usage),
+          );
+
+          verify(
+            () => logger.warn(
+              '''No releases found for app $appId. You need to make first a release before you can create a patch.''',
+            ),
+          ).called(1);
+        });
+      });
+
       group('when running on CI', () {
         setUp(() {
           when(() => shorebirdEnv.canAcceptUserInput).thenReturn(false);