Add codegen step to generate Custom RCTURLRequest Handlers (facebook#…

…42923)

Summary:

This change add the codegen step to generate the list of classes that can be used as custom URLHandlers

## Changelog
[iOS][Added] - Add the codegen step to generate custom URLHandlers

Differential Revision: D53441411

.gitignore

@@ -103,6 +103,7 @@ package-lock.json
 /packages/react-native-codegen/**/*.xcodeproj
 /packages/rn-tester/**/*.xcodeproj
 
+
 # Ruby Gems (Bundler)
 /packages/react-native/vendor
 /packages/react-native/template/vendor
@@ -116,6 +117,7 @@ vendor/
 /packages/react-native/template/ios/Podfile.lock
 /packages/rn-tester/Gemfile.lock
 /packages/**/RCTLegacyInteropComponents.mm
+packages/**/RCTURLRequestHandlerProvider.mm
 
 # Ignore RNTester specific Pods, but keep the __offline_mirrors__ here.
 /packages/rn-tester/Pods/*

packages/react-native/Libraries/AppDelegate/RCTURLRequestHandlerProvider.mm

@@ -15,7 +15,7 @@ @implementation RCTURLRequestHandlerProvider : NSObject
     // The content of this array is codegenerated reading the
     // codegenConfig.ios.customURLRequestHandler array
     // e.g.:
-    @"MyCustomURLRequestHandler",
+
   ];
 }
 

packages/react-native/scripts/codegen/generate-artifacts-executor.js

@@ -59,6 +59,19 @@ const CORE_LIBRARIES_WITH_OUTPUT_FOLDER = {
   },
 };
 const REACT_NATIVE = 'react-native';
+const RCTREQUEST_HANDLER_PROVIDER_PATH = path.join(
+  REACT_NATIVE_PACKAGE_ROOT_FOLDER,
+  'Libraries',
+  'AppDelegate',
+  'RCTURLRequestHandlerProvider.mm',
+);
+const RCTREQUEST_HANDLER_TEMPLATE_PATH = path.join(
+  REACT_NATIVE_PACKAGE_ROOT_FOLDER,
+  'scripts',
+  'codegen',
+  'templates',
+  'RCTURLRequestHandlerProviderMM.template',
+);
 
 // HELPERS
 
@@ -497,6 +510,20 @@ function findCodegenEnabledLibraries(pkgJson, projectRoot) {
   }
 }
 
+function generateCustomURLHandlers(libraries) {
+  const customURLHandlerClasses = libraries
+    .flatMap(library => library?.config?.ios?.protocols?.RCTURLRequestHandler)
+    .filter(Boolean);
+
+  const template = fs.readFileSync(RCTREQUEST_HANDLER_TEMPLATE_PATH, 'utf8');
+  const urlHandlersList = customURLHandlerClasses
+    .map(className => `@"${className}"`)
+    .join(',\n\t\t');
+  const finalFile = template.replace(/{classList}/, urlHandlersList);
+
+  fs.writeFileSync(RCTREQUEST_HANDLER_PROVIDER_PATH, finalFile);
+}
+
 // It removes all the empty files and empty folders
 // it finds, starting from `filepath`, recursively.
 //
@@ -609,6 +636,8 @@ function execute(projectRoot, targetPlatform, baseOutputPath) {
 
         createComponentProvider(schemas, supportedApplePlatforms);
       }
+
+      generateCustomURLHandlers(libraries);
       cleanupEmptyFilesAndFolders(outputPath);
     }
   } catch (err) {

packages/react-native/scripts/codegen/templates/RCTURLRequestHandlerProviderMM.template

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import "RCTURLRequestHandlerProvider.h"
+
+@implementation RCTURLRequestHandlerProvider: NSObject
+
++ (NSArray<NSString *> *)customURLRequestHandlerClassNames
+{
+  return @[
+    {classList}
+  ];
+}
+
+@end