XCFramework experiment

.buildkite/commands/verify-xcframework-test-fails-with-missing-resources.sh

@@ -0,0 +1,28 @@
+#!/bin/bash -eu
+
+set -o pipefail
+
+echo "--- :pencil2: Breaking bundle resource path to verify test catches failures"
+# Replace "Gutenberg" with "folder_that_does_not_exist" in the HTMLPreviewManager
+sed -i.bak 's/forResource: "Gutenberg", withExtension: nil/forResource: "folder_that_does_not_exist", withExtension: nil/g' ios/Sources/GutenbergKit/Sources/Views/HTMLPreview/HTMLPreviewManager.swift
+
+echo "--- :package: Rebuilding XCFramework with broken resource path"
+make build-xcframework-debug
+
+echo "--- :apple: Running integration tests (expecting failure)"
+set +e  # Don't exit on error
+make test-xcframework-integration MAKECMDGOALS=test-xcframework-integration
+TEST_EXIT_CODE=$?
+set -e  # Re-enable exit on error
+
+echo "--- :mag: Restoring original file"
+mv ios/Sources/GutenbergKit/Sources/Views/HTMLPreview/HTMLPreviewManager.swift.bak ios/Sources/GutenbergKit/Sources/Views/HTMLPreview/HTMLPreviewManager.swift
+
+echo "--- :white_check_mark: Verifying test failed as expected"
+if [ $TEST_EXIT_CODE -eq 0 ]; then
+    echo "ERROR: Tests passed when they should have failed! The test does not properly catch missing bundle resources."
+    exit 1
+else
+    echo "SUCCESS: Tests failed as expected when bundle resources were missing (exit code: $TEST_EXIT_CODE)"
+    exit 0
+fi

.buildkite/pipeline.yml

@@ -37,3 +37,11 @@ steps:
     - label: ':swift: Test Swift Package'
       command: make test-swift-package
       plugins: *plugins
+
+    - label: ':xcode: Test XCFramework'
+      command: make test-xcframework-integration
+      plugins: *plugins
+
+    - label: ':xcode: Verify XCFramework Integration Test Fails With Missing Resources'
+      command: .buildkite/commands/verify-xcframework-test-fails-with-missing-resources.sh
+      plugins: *plugins

.gitignore

@@ -190,8 +190,8 @@ local.properties
 /android/Gutenberg/src/main/assets/index.html
 
 # Disabled removing these files until this is published like Android in CI.
-# /ios/Sources/GutenbergKit/Gutenberg/assets
-# /ios/Sources/GutenbergKit/Gutenberg/index.html
+/ios/Sources/GutenbergKit/Gutenberg/assets
+/ios/Sources/GutenbergKit/Gutenberg/index.html
 
 # Translation files
 src/translations/

.xcode-version

@@ -1 +1 @@
-26.0
+26.1.1

Makefile

@@ -1,6 +1,6 @@
 .DEFAULT_GOAL := help
 
-SIMULATOR_DESTINATION := OS=26.0,name=iPhone 17
+SIMULATOR_DESTINATION := OS=26.1,name=iPhone 17
 
 .PHONY: help
 help: ## Display this help menu
@@ -148,6 +148,27 @@ test-android: ## Run Android tests
 	@echo "--- :android: Running Android Tests"
 	./android/gradlew -p ./android :gutenberg:test
 
+.PHONY: build-xcframework
+build-xcframework: build ## Build XCFramework for iOS
+	@echo "--- :package: Building XCFramework"
+	@SWIFT_OPTIMIZATION_LEVEL="${SWIFT_OPTIMIZATION_LEVEL:--O}" ./build_xcframework.sh GutenbergKit
+
+.PHONY: build-xcframework-debug
+build-xcframework-debug: build ## Build XCFramework for iOS with no optimizations (for testing)
+	@echo "--- :package: Building XCFramework (Debug - No Optimizations)"
+	@SWIFT_OPTIMIZATION_LEVEL=-Onone ./build_xcframework.sh GutenbergKit
+
+.PHONY: test-xcframework-integration
+test-xcframework-integration: build-xcframework-debug ## Run XCFramework integration tests
+	@echo "--- :apple: Running XCFramework Integration Tests"
+	@set -o pipefail && \
+		xcodebuild test \
+		-project ios/Demo-iOS/Gutenberg.xcodeproj \
+		-scheme XCFrameworkIntegrationTests \
+		-sdk iphonesimulator \
+		-destination '${SIMULATOR_DESTINATION}' \
+		| xcbeautify
+
 ################################################################################
 # Release Target
 ################################################################################

Package.swift

@@ -7,7 +7,15 @@ let package = Package(
     name: "GutenbergKit",
     platforms: [.iOS(.v17), .macOS(.v14)],
     products: [
-        .library(name: "GutenbergKit", targets: ["GutenbergKit"])
+        .library(
+            name: "GutenbergKit",
+            // Seems like to build for XCFrameworks, we need dynamic libraries
+            // https://forums.swift.org/t/how-to-build-swift-package-as-xcframework/41414/57
+            //
+            // TODO: Use env var to switch between static by default and dynamic opt-in
+            type: .dynamic,
+            targets: ["GutenbergKit"]
+        )
     ],
     dependencies: [
         .package(url: "https://github.com/scinfu/SwiftSoup.git", from: "2.7.5"),

build_xcframework.sh

@@ -0,0 +1,141 @@
+#!/bin/bash -eu
+
+set -o pipefail
+
+# Originally sourced from:
+# https://github.com/OpenSwiftUIProject/ProtobufKit/blob/937eae5426277bec040c7f99bc8e1498c30ed467/Scripts/build_xcframework.sh
+#
+# Found it via:
+# https://forums.swift.org/t/how-on-earth-can-i-create-a-framework-from-a-swift-package/76797/6
+#
+# Related:
+# https://forums.swift.org/t/how-to-build-swift-package-as-xcframework/41414/57
+
+# Script modified from https://docs.emergetools.com/docs/analyzing-a-spm-framework-ios
+
+PACKAGE_NAME=${1-}
+if [ -z "$PACKAGE_NAME" ]; then
+    echo "No package name provided. Using the first scheme found in the Package.swift."
+    PACKAGE_NAME=$(xcodebuild -list | awk 'schemes && NF>0 { print $1; exit } /Schemes:$/ { schemes = 1 }')
+    echo "Using: $PACKAGE_NAME"
+fi
+
+# Swift optimization level: -Onone (no optimization), -O (optimize for speed), -Osize (optimize for size)
+# Default to -O for release builds, can be overridden with SWIFT_OPTIMIZATION_LEVEL environment variable
+SWIFT_OPTIMIZATION_LEVEL="${SWIFT_OPTIMIZATION_LEVEL:--O}"
+echo "Swift optimization level: $SWIFT_OPTIMIZATION_LEVEL"
+
+# FIXME: Original script was in subfolder, this is in repo root for the time being.
+#
+# SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd -P)"
+# PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
+PROJECT_ROOT=$(pwd)
+
+PROJECT_BUILD_DIR="${PROJECT_BUILD_DIR:-"${PROJECT_ROOT}/build"}"
+XCODEBUILD_BUILD_DIR="$PROJECT_BUILD_DIR/xcodebuild"
+XCODEBUILD_DERIVED_DATA_PATH="$XCODEBUILD_BUILD_DIR/DerivedData"
+
+echo "PROJECT_BUILD_DIR is $PROJECT_BUILD_DIR"
+
+build_framework() {
+    local sdk="$1"
+    local destination="$2"
+    local scheme="$3"
+
+    local XCODEBUILD_ARCHIVE_PATH="./build/$scheme-$sdk.xcarchive"
+
+    rm -rf "$XCODEBUILD_ARCHIVE_PATH"
+
+    # TODO: Consider using this env var to switch between static (default)
+    # and dynamic (required for XCFramework)
+    #
+    # See:
+    # https://github.com/OpenSwiftUIProject/ProtobufKit/blob/937eae5426277bec040c7f99bc8e1498c30ed467/Package.swift#L30
+    # LIBRARY_TYPE=dynamic xcodebuild archive \
+    xcodebuild archive \
+        -scheme "$scheme" \
+        -archivePath "$XCODEBUILD_ARCHIVE_PATH" \
+        -derivedDataPath "$XCODEBUILD_DERIVED_DATA_PATH" \
+        -sdk "$sdk" \
+        -destination "$destination" \
+        BUILD_LIBRARY_FOR_DISTRIBUTION=YES \
+        INSTALL_PATH='Library/Frameworks' \
+        SWIFT_OPTIMIZATION_LEVEL="$SWIFT_OPTIMIZATION_LEVEL" \
+        OTHER_SWIFT_FLAGS=-no-verify-emitted-module-interface \
+        | xcbeautify
+
+    if [ "$sdk" = "macosx" ]; then
+        FRAMEWORK_MODULES_PATH="$XCODEBUILD_ARCHIVE_PATH/Products/Library/Frameworks/$scheme.framework/Versions/Current/Modules"
+        mkdir -p "$FRAMEWORK_MODULES_PATH"
+        cp -r \
+        "$XCODEBUILD_DERIVED_DATA_PATH/Build/Intermediates.noindex/ArchiveIntermediates/$scheme/BuildProductsPath/Release/$scheme.swiftmodule" \
+        "$FRAMEWORK_MODULES_PATH/$scheme.swiftmodule"
+        rm -rf "$XCODEBUILD_ARCHIVE_PATH/Products/Library/Frameworks/$scheme.framework/Modules"
+        ln -s Versions/Current/Modules "$XCODEBUILD_ARCHIVE_PATH/Products/Library/Frameworks/$scheme.framework/Modules"
+    else
+        FRAMEWORK_MODULES_PATH="$XCODEBUILD_ARCHIVE_PATH/Products/Library/Frameworks/$scheme.framework/Modules"
+        mkdir -p "$FRAMEWORK_MODULES_PATH"
+        cp -r \
+        "$XCODEBUILD_DERIVED_DATA_PATH/Build/Intermediates.noindex/ArchiveIntermediates/$scheme/BuildProductsPath/Release-$sdk/$scheme.swiftmodule" \
+        "$FRAMEWORK_MODULES_PATH/$scheme.swiftmodule"
+    fi
+
+    # Delete private and package swiftinterface
+    rm -f "$FRAMEWORK_MODULES_PATH/$scheme.swiftmodule/*.package.swiftinterface"
+    rm -f "$FRAMEWORK_MODULES_PATH/$scheme.swiftmodule/*.private.swiftinterface"
+}
+
+copy_resource_bundles() {
+    local sdk="$1"
+    local scheme="$2"
+
+    local XCODEBUILD_ARCHIVE_PATH="./build/$scheme-$sdk.xcarchive"
+    local FRAMEWORK_PATH="$XCODEBUILD_ARCHIVE_PATH/Products/Library/Frameworks/$scheme.framework"
+
+    # Find all resource bundles in DerivedData
+    local BUNDLE_PATH="$XCODEBUILD_DERIVED_DATA_PATH/Build/Intermediates.noindex/ArchiveIntermediates/$scheme/IntermediateBuildFilesPath/UninstalledProducts/$sdk"
+
+    # Copy all .bundle files found
+    if [ -d "$BUNDLE_PATH" ]; then
+        find "$BUNDLE_PATH" -name "*.bundle" -maxdepth 1 -type d -print0 | while IFS= read -r -d '' bundle; do
+            bundle_name=$(basename "$bundle")
+            echo "Copying resource bundle: $bundle_name to $FRAMEWORK_PATH"
+            # Remove symlink if it exists and copy the actual bundle
+            rm -rf "${FRAMEWORK_PATH:?}/$bundle_name"
+            cp -R "$bundle" "$FRAMEWORK_PATH/"
+        done
+    else
+        echo "Warning: Bundle path not found: $BUNDLE_PATH"
+    fi
+}
+
+build_framework "iphonesimulator" "generic/platform=iOS Simulator" "$PACKAGE_NAME"
+copy_resource_bundles "iphonesimulator" "$PACKAGE_NAME"
+
+build_framework "iphoneos" "generic/platform=iOS" "$PACKAGE_NAME"
+copy_resource_bundles "iphoneos" "$PACKAGE_NAME"
+
+# No macOS support because of UIKit in the dependencies
+#
+# build_framework "macosx" "generic/platform=macOS" "$PACKAGE_NAME"
+# copy_resource_bundles "macosx" "$PACKAGE_NAME"
+
+echo "Builds completed successfully."
+
+pushd "$PROJECT_BUILD_DIR" > /dev/null
+
+rm -rf "$PACKAGE_NAME.xcframework"
+xcodebuild -create-xcframework  \
+    -framework "$PACKAGE_NAME-iphonesimulator.xcarchive/Products/Library/Frameworks/$PACKAGE_NAME.framework" \
+    -framework "$PACKAGE_NAME-iphoneos.xcarchive/Products/Library/Frameworks/$PACKAGE_NAME.framework" \
+    -output "$PACKAGE_NAME.xcframework"
+
+cp -r "$PACKAGE_NAME-iphonesimulator.xcarchive/dSYMs" "$PACKAGE_NAME.xcframework/ios-arm64_x86_64-simulator"
+cp -r "$PACKAGE_NAME-iphoneos.xcarchive/dSYMs" "$PACKAGE_NAME.xcframework/ios-arm64"
+
+zip -r "$PACKAGE_NAME.xcframework.zip" "$PACKAGE_NAME.xcframework" > /dev/null
+
+# TODO: Remove emoji, print all in green
+echo "✅ XCFramework generated at $(pwd)/$PACKAGE_NAME.xcframework"
+
+popd > /dev/null