# Copyright 2013 The Flutter Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

assert(is_ios)

import("//build/config/ios/ios_sdk.gni")
import("//build/toolchain/clang.gni")
import("//flutter/common/config.gni")
import("//flutter/shell/gpu/gpu.gni")
import("//flutter/shell/platform/darwin/common/framework_shared.gni")
import("//flutter/testing/testing.gni")

_flutter_framework_dir = "$root_out_dir/Flutter.framework"

shell_gpu_configuration("ios_gpu_configuration") {
  enable_software = true
  enable_gl = true
  enable_vulkan = false
  enable_metal = shell_enable_metal
}

# The headers that will be copied to the Flutter.framework and be accessed
# from outside the Flutter engine source root.
_flutter_framework_headers = [
  "framework/Headers/Flutter.h",
  "framework/Headers/FlutterAppDelegate.h",
  "framework/Headers/FlutterCallbackCache.h",
  "framework/Headers/FlutterDartProject.h",
  "framework/Headers/FlutterEngine.h",
  "framework/Headers/FlutterHeadlessDartRunner.h",
  "framework/Headers/FlutterPlatformViews.h",
  "framework/Headers/FlutterPlugin.h",
  "framework/Headers/FlutterPluginAppLifeCycleDelegate.h",
  "framework/Headers/FlutterViewController.h",
]

_flutter_framework_headers_copy_dir = "$_flutter_framework_dir/Headers"

source_set("flutter_framework_source") {
  visibility = [ ":*" ]
  cflags_objc = flutter_cflags_objc
  cflags_objcc = flutter_cflags_objcc

  sources = [
    "framework/Source/FlutterAppDelegate.mm",
    "framework/Source/FlutterBinaryMessengerRelay.mm",
    "framework/Source/FlutterCallbackCache.mm",
    "framework/Source/FlutterCallbackCache_Internal.h",
    "framework/Source/FlutterDartProject.mm",
    "framework/Source/FlutterDartProject_Internal.h",
    "framework/Source/FlutterEngine.mm",
    "framework/Source/FlutterEngine_Internal.h",
    "framework/Source/FlutterHeadlessDartRunner.mm",
    "framework/Source/FlutterObservatoryPublisher.h",
    "framework/Source/FlutterObservatoryPublisher.mm",
    "framework/Source/FlutterOverlayView.h",
    "framework/Source/FlutterOverlayView.mm",
    "framework/Source/FlutterPlatformPlugin.h",
    "framework/Source/FlutterPlatformPlugin.mm",
    "framework/Source/FlutterPlatformViews.mm",
    "framework/Source/FlutterPlatformViews_Internal.h",
    "framework/Source/FlutterPlatformViews_Internal.mm",
    "framework/Source/FlutterPluginAppLifeCycleDelegate.mm",
    "framework/Source/FlutterTextInputDelegate.h",
    "framework/Source/FlutterTextInputPlugin.h",
    "framework/Source/FlutterTextInputPlugin.mm",
    "framework/Source/FlutterView.h",
    "framework/Source/FlutterView.mm",
    "framework/Source/FlutterViewController.mm",
    "framework/Source/FlutterViewController_Internal.h",
    "framework/Source/SemanticsObject.h",
    "framework/Source/SemanticsObject.mm",
    "framework/Source/accessibility_bridge.h",
    "framework/Source/accessibility_bridge.mm",
    "framework/Source/accessibility_text_entry.h",
    "framework/Source/accessibility_text_entry.mm",
    "framework/Source/connection_collection.cc",
    "framework/Source/connection_collection.h",
    "framework/Source/platform_message_response_darwin.h",
    "framework/Source/platform_message_response_darwin.mm",
    "framework/Source/platform_message_router.h",
    "framework/Source/platform_message_router.mm",
    "framework/Source/profiler_metrics_ios.h",
    "framework/Source/profiler_metrics_ios.mm",
    "framework/Source/vsync_waiter_ios.h",
    "framework/Source/vsync_waiter_ios.mm",
    "ios_context.h",
    "ios_context.mm",
    "ios_context_gl.h",
    "ios_context_gl.mm",
    "ios_context_software.h",
    "ios_context_software.mm",
    "ios_external_texture_gl.h",
    "ios_external_texture_gl.mm",
    "ios_render_target_gl.h",
    "ios_render_target_gl.mm",
    "ios_surface.h",
    "ios_surface.mm",
    "ios_surface_gl.h",
    "ios_surface_gl.mm",
    "ios_surface_software.h",
    "ios_surface_software.mm",
    "ios_switchable_gl_context.h",
    "ios_switchable_gl_context.mm",
    "platform_view_ios.h",
    "platform_view_ios.mm",
    "rendering_api_selection.h",
    "rendering_api_selection.mm",
  ]

  sources += _flutter_framework_headers

  defines = [ "FLUTTER_FRAMEWORK=1" ]

  if (shell_enable_metal) {
    defines += [ "FLUTTER_SHELL_ENABLE_METAL=1" ]

    sources += [
      "ios_context_metal.h",
      "ios_context_metal.mm",
      "ios_external_texture_metal.h",
      "ios_external_texture_metal.mm",
      "ios_surface_metal.h",
      "ios_surface_metal.mm",
    ]
  }

  deps = [
    ":ios_gpu_configuration",
    "//flutter/common",
    "//flutter/flow",
    "//flutter/fml",
    "//flutter/lib/ui",
    "//flutter/runtime",
    "//flutter/runtime:libdart",
    "//flutter/shell/common",
    "//flutter/shell/platform/darwin/common",
    "//flutter/shell/platform/darwin/common:framework_shared",
    "//flutter/shell/profiling:profiling",
    "//third_party/skia",
  ]

  public_configs = [ "//flutter:config" ]

  libs = [
    "AudioToolbox.framework",
    "CoreMedia.framework",
    "CoreVideo.framework",
    "OpenGLES.framework",
    "QuartzCore.framework",
    "UIKit.framework",
  ]
  if (flutter_runtime_mode == "profile" || flutter_runtime_mode == "debug") {
    # This is required by the profiler_metrics_ios.mm to get GPU statistics.
    # Usage in release builds will cause rejection from the App Store.
    libs += [ "IOKit.framework" ]
  }
}

ios_test_flutter_path = rebase_path("$root_out_dir/libios_test_flutter.dylib")
platform_frameworks_path = "$ios_sdk_path/../../Library/Frameworks/"

# For tests that rely on manual reference counting.
source_set("ios_test_flutter_mrc") {
  visibility = [ ":*" ]
  cflags = [
    "-fvisibility=default",
    "-F$platform_frameworks_path",
    "-mios-simulator-version-min=$ios_testing_deployment_target",
  ]
  sources = [
    "framework/Source/FlutterEnginePlatformViewTest.mm",
    "framework/Source/FlutterPlatformViewsTest.mm",
    "framework/Source/accessibility_bridge_test.mm",
  ]
  deps = [
    ":flutter_framework_source",
    "//flutter/shell/platform/darwin/common:framework_shared",
    "//flutter/third_party/tonic",
    "//flutter/third_party/txt",
    "//third_party/ocmock:ocmock",
    "//third_party/rapidjson",
    "//third_party/skia",
  ]
}

# NOTE: This currently only supports simulator targets because of the install_name.
# TODO(54504): Switch the install_name and make the test runner copy the dynamic
#              library into the testing bundle.
shared_library("ios_test_flutter") {
  visibility = [ ":*" ]
  cflags = [
    "-fvisibility=default",
    "-F$platform_frameworks_path",
    "-fobjc-arc",
    "-mios-simulator-version-min=$ios_testing_deployment_target",
  ]
  ldflags = [
    "-F$platform_frameworks_path",
    "-Wl,-framework,XCTest",
    "-Wl,-install_name,$ios_test_flutter_path",
  ]
  configs -= [
    "//build/config/gcc:symbol_visibility_hidden",
    "//build/config:symbol_visibility_hidden",
  ]
  sources = [
    "framework/Source/FlutterBinaryMessengerRelayTest.mm",
    "framework/Source/FlutterEngineTest.mm",
    "framework/Source/FlutterPluginAppLifeCycleDelegateTest.m",
    "framework/Source/FlutterTextInputPluginTest.m",
    "framework/Source/FlutterViewControllerTest.mm",
    "framework/Source/SemanticsObjectTest.mm",
    "framework/Source/connection_collection_test.mm",
  ]
  deps = [
    ":flutter_framework_source",
    ":ios_test_flutter_mrc",
    "//flutter/shell/platform/darwin/common:framework_shared",
    "//flutter/third_party/tonic",
    "//flutter/third_party/txt",
    "//third_party/ocmock:ocmock",
    "//third_party/rapidjson",
    "//third_party/skia",
  ]
  public_configs = [ "//flutter:config" ]
}

shared_library("create_flutter_framework_dylib") {
  visibility = [ ":*" ]

  output_name = "Flutter"

  ldflags = [ "-Wl,-install_name,@rpath/Flutter.framework/Flutter" ]

  public = _flutter_framework_headers

  deps = [
    ":flutter_framework_source",
  ]

  public_configs = [ "//flutter:config" ]
}

copy("copy_dylib") {
  visibility = [ ":*" ]

  sources = [
    "$root_out_dir/libFlutter.dylib",
  ]
  outputs = [
    "$_flutter_framework_dir/Flutter",
  ]

  deps = [
    ":create_flutter_framework_dylib",
  ]
}

action("copy_framework_info_plist") {
  script = "//flutter/build/copy_info_plist.py"
  visibility = [ ":*" ]
  sources = [
    "framework/Info.plist",
  ]
  outputs = [
    "$_flutter_framework_dir/Info.plist",
  ]
  args = [
    rebase_path(sources[0]),
    rebase_path(outputs[0]),
    "--bitcode=$enable_bitcode",
  ]
}

copy("copy_framework_module_map") {
  visibility = [ ":*" ]
  sources = [
    "framework/module.modulemap",
  ]
  outputs = [
    "$_flutter_framework_dir/Modules/module.modulemap",
  ]
}

action("copy_framework_headers") {
  script = "//flutter/sky/tools/install_framework_headers.py"
  visibility = [ ":*" ]
  sources = get_path_info(_flutter_framework_headers, "abspath") +
            framework_shared_headers
  outputs = []
  foreach(header, sources) {
    header_basename = get_path_info(header, "file")
    outputs += [ "$_flutter_framework_headers_copy_dir/$header_basename" ]
  }
  args = [
           "--location",
           rebase_path("$_flutter_framework_headers_copy_dir"),
           "--headers",
         ] + rebase_path(sources, "", "//")
}

copy("copy_framework_icu") {
  visibility = [ ":*" ]
  sources = [
    "//third_party/icu/flutter/icudtl.dat",
  ]
  outputs = [
    "$_flutter_framework_dir/{{source_file_part}}",
  ]
}

copy("copy_framework_podspec") {
  visibility = [ ":*" ]
  sources = [
    "framework/Flutter.podspec",
  ]
  outputs = [
    "$root_out_dir/Flutter.podspec",
  ]
}

copy("copy_license") {
  visibility = [ ":*" ]
  sources = [
    "//LICENSE",
  ]
  outputs = [
    "$root_out_dir/LICENSE",
  ]
}

shared_library("copy_and_verify_framework_headers") {
  visibility = [ ":*" ]
  include_dirs = [ "$_flutter_framework_headers_copy_dir" ]

  sources = [
    "framework/Source/FlutterUmbrellaImport.m",
  ]
  deps = [
    ":copy_framework_headers",
  ]
}

group("flutter_framework") {
  deps = [
    ":copy_and_verify_framework_headers",
    ":copy_dylib",
    ":copy_framework_icu",
    ":copy_framework_info_plist",
    ":copy_framework_module_map",
    ":copy_framework_podspec",
    ":copy_license",
  ]
}