Add function to generate artifact for codegen (#53676)

Summary:
Pull Request resolved: #53676

## Context

When configuring an app to build with SwiftPM from source, there is a sequence of operations we need to run in order to prepare the project correctly.

## Changed

Add a function that generates codegen artifacts. Those are required by React Native and by the app to build properly.

## Changelog:
[Internal] -

Reviewed By: cortinico

Differential Revision: D81778439

fbshipit-source-id: 7fe5cc0b612d2d9324d68fe04ec556e986ec14af

Author: cipolleschi

packages/react-native/scripts/swiftpm/__tests__/prepare-app-utils-test.js

@@ -14,6 +14,7 @@ const {
   configureAppForSwift,
   createHardlinks,
   findXcodeProjectDirectory,
+  generateCodegenArtifacts,
   runIosPrebuild,
   runPodDeintegrate,
   setBuildFromSource,
@@ -31,6 +32,9 @@ jest.mock('../headers-utils');
 // Mock prepare-app-dependencies-headers module
 jest.mock('../prepare-app-dependencies-headers');
 
+// Mock codegen executor module
+jest.mock('../../codegen/generate-artifacts-executor');
+
 // Mock path module for absolute paths
 jest.mock('path', () => {
   const actualPath = jest.requireActual('path');
@@ -239,6 +243,127 @@ describe('createHardlinks', () => {
   });
 });
 
+describe('generateCodegenArtifacts', () => {
+  let mockCodegenExecutor;
+  let mockConsoleLog;
+
+  beforeEach(() => {
+    // Setup mocks
+    mockCodegenExecutor = require('../../codegen/generate-artifacts-executor');
+    mockConsoleLog = console.log;
+
+    // Clear and reset all mocks completely
+    jest.clearAllMocks();
+    jest.resetAllMocks();
+
+    // Set up fresh mock implementations
+    mockCodegenExecutor.execute = jest.fn();
+  });
+
+  it('should run codegen successfully', async () => {
+    // Setup
+    const reactNativePath = '/path/to/react-native';
+    const appPath = '/path/to/app';
+    const appIosPath = '/path/to/app/ios';
+
+    mockCodegenExecutor.execute.mockImplementation(() => {});
+
+    // Execute
+    await generateCodegenArtifacts(reactNativePath, appPath, appIosPath);
+
+    // Assert
+    expect(mockCodegenExecutor.execute).toHaveBeenCalledWith(
+      appPath,
+      'ios',
+      appIosPath,
+      'app',
+    );
+    expect(mockCodegenExecutor.execute).toHaveBeenCalledTimes(1);
+
+    // Verify console output
+    expect(mockConsoleLog).toHaveBeenCalledWith(
+      'Generating codegen artifacts...',
+    );
+    expect(mockConsoleLog).toHaveBeenCalledWith(
+      '✓ Codegen artifacts generated',
+    );
+  });
+
+  it('should throw error when codegen execution fails', async () => {
+    // Setup
+    const reactNativePath = '/path/to/react-native';
+    const appPath = '/path/to/app';
+    const appIosPath = '/path/to/app/ios';
+    const originalError = new Error('Codegen failed to generate artifacts');
+
+    mockCodegenExecutor.execute.mockImplementation(() => {
+      throw originalError;
+    });
+
+    // Execute & Assert
+    await expect(
+      generateCodegenArtifacts(reactNativePath, appPath, appIosPath),
+    ).rejects.toThrow(
+      'Codegen generation failed: Codegen failed to generate artifacts',
+    );
+
+    expect(mockCodegenExecutor.execute).toHaveBeenCalledWith(
+      appPath,
+      'ios',
+      appIosPath,
+      'app',
+    );
+    expect(mockCodegenExecutor.execute).toHaveBeenCalledTimes(1);
+
+    expect(mockConsoleLog).toHaveBeenCalledWith(
+      'Generating codegen artifacts...',
+    );
+    expect(mockConsoleLog).not.toHaveBeenCalledWith(
+      '✓ Codegen artifacts generated',
+    );
+  });
+
+  it('should handle different paths correctly', async () => {
+    // Setup
+    const reactNativePath = '/Users/developer/react-native';
+    const appPath = '/Users/developer/MyApp';
+    const appIosPath = '/Users/developer/MyApp/ios';
+
+    mockCodegenExecutor.execute.mockImplementation(() => {});
+
+    // Execute
+    await generateCodegenArtifacts(reactNativePath, appPath, appIosPath);
+
+    // Assert
+    expect(mockCodegenExecutor.execute).toHaveBeenCalledWith(
+      appPath,
+      'ios',
+      appIosPath,
+      'app',
+    );
+  });
+
+  it('should handle paths with spaces correctly', async () => {
+    // Setup
+    const reactNativePath = '/path/to/react native';
+    const appPath = '/path/to/my app';
+    const appIosPath = '/path/to/my app/ios folder';
+
+    mockCodegenExecutor.execute.mockImplementation(() => {});
+
+    // Execute
+    await generateCodegenArtifacts(reactNativePath, appPath, appIosPath);
+
+    // Assert
+    expect(mockCodegenExecutor.execute).toHaveBeenCalledWith(
+      appPath,
+      'ios',
+      appIosPath,
+      'app',
+    );
+  });
+});
+
 // Mock console methods - disable React Native's strict console checking
 const originalConsole = global.console;
 

packages/react-native/scripts/swiftpm/prepare-app-utils.js

@@ -8,6 +8,7 @@
  * @format
  */
 
+const codegenExecutor = require('../codegen/generate-artifacts-executor');
 const {symlinkThirdPartyDependenciesHeaders} = require('./headers-utils');
 const {
   symlinkReactNativeHeaders,
@@ -236,11 +237,32 @@ async function createHardlinks(
   }
 }
 
+/**
+ * Generate codegen artifacts using the executor
+ */
+async function generateCodegenArtifacts(
+  reactNativePath /*: string */,
+  appPath /*: string */,
+  appIosPath /*: string */,
+) /*: Promise<void> */ {
+  try {
+    console.log('Generating codegen artifacts...');
+
+    // Use the codegen executor directly
+    codegenExecutor.execute(appPath, 'ios', appIosPath, 'app');
+
+    console.log('✓ Codegen artifacts generated');
+  } catch (error) {
+    throw new Error(`Codegen generation failed: ${error.message}`);
+  }
+}
+
 module.exports = {
   findXcodeProjectDirectory,
   runPodDeintegrate,
   runIosPrebuild,
   configureAppForSwift,
   setBuildFromSource,
   createHardlinks,
+  generateCodegenArtifacts,
 };