feat(gen2-migration): add storage codegen naming

packages/amplify-cli/src/__tests__/commands/gen2-migration/refactor/generators/setup-jest.ts

@@ -1,7 +1,15 @@
-import { expect } from '@jest/globals';
 import { toBeACloudFormationCommand } from './custom-test-matchers';
 import { DescribeStackResourcesCommand } from '@aws-sdk/client-cloudformation';
 
+// Mock AWS SDK config loading
+jest.mock('@smithy/shared-ini-file-loader', () => ({
+  loadSharedConfigFiles: jest.fn().mockResolvedValue({
+    configFile: { default: {} },
+    credentialsFile: { default: {} },
+  }),
+  getProfileName: jest.fn().mockReturnValue('default'),
+}));
+
 expect.extend({
   toBeACloudFormationCommand,
 });

packages/amplify-cli/src/commands/gen2-migration/codegen-generate/src/generators/storage/index.ts

@@ -55,7 +55,34 @@ export const renderStorage = (storageParams: StorageRenderParameters = {}) => {
 
   const postImportStatements = [];
 
-  // Remove name parameter - let Gen 2 auto-generate storage names
+  const amplifyGen1EnvStatement = createVariableStatement(
+    factory.createVariableDeclaration(
+      gen2BranchNameVariableName,
+      undefined,
+      undefined,
+      factory.createIdentifier('process.env.AWS_BRANCH ?? "sandbox"'),
+    ),
+  );
+  postImportStatements.push(amplifyGen1EnvStatement);
+
+  if (storageParams.storageIdentifier) {
+    const splitStorageIdentifier = storageParams.storageIdentifier.split('-');
+    const storageNameWithoutBackendEnvName = splitStorageIdentifier.slice(0, -1).join('-');
+
+    const storageNameAssignment = createTemplateLiteral(`${storageNameWithoutBackendEnvName}-`, gen2BranchNameVariableName, '');
+    const nameProperty = factory.createPropertyAssignment(factory.createIdentifier('name'), storageNameAssignment);
+
+    // Add comments as leading trivia
+    ts.addSyntheticLeadingComment(nameProperty, ts.SyntaxKind.SingleLineCommentTrivia, ` Use this bucket name post refactor`, true);
+    ts.addSyntheticLeadingComment(
+      nameProperty,
+      ts.SyntaxKind.SingleLineCommentTrivia,
+      ` name: '${storageParams.storageIdentifier}',`,
+      true,
+    );
+
+    propertyAssignments.push(nameProperty);
+  }
   if (storageParams.accessPatterns) {
     propertyAssignments.push(getAccessPatterns(storageParams.accessPatterns));
   }