// Copyright 2014 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.

import '../../artifacts.dart';
import '../../base/file_system.dart';
import '../../build_info.dart';
import '../build_system.dart';

/// Copies the Windows desktop embedding files to the copy directory.
class UnpackWindows extends Target {
  const UnpackWindows();

  @override
  String get name => 'unpack_windows';

  @override
  List<Source> get inputs => const <Source>[
    Source.pattern('{FLUTTER_ROOT}/packages/flutter_tools/lib/src/build_system/targets/windows.dart'),
    Source.artifact(Artifact.windowsDesktopPath, mode: BuildMode.debug),
  ];

  @override
  List<Source> get outputs => const <Source>[
    Source.pattern('{PROJECT_DIR}/windows/flutter/flutter_windows.dll'),
    Source.pattern('{PROJECT_DIR}/windows/flutter/flutter_windows.dll.exp'),
    Source.pattern('{PROJECT_DIR}/windows/flutter/flutter_windows.dll.lib'),
    Source.pattern('{PROJECT_DIR}/windows/flutter/flutter_windows.dll.pdb'),
    Source.pattern('{PROJECT_DIR}/windows/flutter/flutter_export.h'),
    Source.pattern('{PROJECT_DIR}/windows/flutter/flutter_messenger.h'),
    Source.pattern('{PROJECT_DIR}/windows/flutter/flutter_plugin_registrar.h'),
    Source.pattern('{PROJECT_DIR}/windows/flutter/flutter_windows.h'),
    Source.pattern('{PROJECT_DIR}/windows/flutter/icudtl.dat'),
  ];

  @override
  List<Target> get dependencies => const <Target>[];

  @override
  Future<void> build(Environment environment) async {
    // This path needs to match the prefix in the rule below.
    final String basePath = environment.artifacts
      .getArtifactPath(Artifact.windowsDesktopPath);
    for (final File input in environment.fileSystem.directory(basePath)
        .listSync(recursive: true)
        .whereType<File>()) {
      final String outputPath = environment.fileSystem.path.join(
        environment.projectDir.path,
        'windows',
        'flutter',
        environment.fileSystem.path
          .relative(input.path, from: basePath),
      );
      final File destinationFile = environment.fileSystem.file(outputPath);
      if (!destinationFile.parent.existsSync()) {
        destinationFile.parent.createSync(recursive: true);
      }
      environment.fileSystem
        .file(input).copySync(destinationFile.path);
    }
  }
}