// Copyright 2019 The Chromium 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 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/io.dart';
import 'package:flutter_tools/src/base/platform.dart';
import 'package:flutter_tools/src/base/process_manager.dart';
import 'package:flutter_tools/src/build_system/build_system.dart';
import 'package:flutter_tools/src/build_system/targets/macos.dart';
import 'package:mockito/mockito.dart';
import 'package:process/process.dart';

import '../../src/common.dart';
import '../../src/testbed.dart';

void main() {
  group('unpack_macos', () {
    Testbed testbed;
    BuildSystem buildSystem;
    Environment environment;
    MockPlatform mockPlatform;

    setUp(() {
      mockPlatform = MockPlatform();
      when(mockPlatform.isWindows).thenReturn(false);
      when(mockPlatform.isMacOS).thenReturn(true);
      when(mockPlatform.isLinux).thenReturn(false);
      testbed = Testbed(setup: () {
        environment = Environment(
          projectDir: fs.currentDirectory,
        );
        buildSystem = BuildSystem(<String, Target>{
          unpackMacos.name: unpackMacos,
        });
        final List<File> inputs = <File>[
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/FlutterMacOS'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FLEOpenGLContextHandling.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FLEReshapeListener.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FLEView.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FLEViewController.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FlutterBinaryMessenger.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FlutterChannels.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FlutterCodecs.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FlutterMacOS.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FlutterPluginMacOS.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Headers/FlutterPluginRegisrarMacOS.h'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Modules/module.modulemap'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Resources/icudtl.dat'),
          fs.file('bin/cache/artifacts/engine/darwin-x64/FlutterMacOS.framework/Resources/info.plist'),
        ];
        for (File input in inputs) {
          input.createSync(recursive: true);
        }
        when(processManager.runSync(any)).thenAnswer((Invocation invocation) {
          final List<String> arguments = invocation.positionalArguments.first;
          final Directory source = fs.directory(arguments[arguments.length - 2]);
          final Directory target = fs.directory(arguments.last)
            ..createSync(recursive: true);
          for (FileSystemEntity entity in source.listSync(recursive: true)) {
            if (entity is File) {
              final String relative = fs.path.relative(entity.path, from: source.path);
              final String destination = fs.path.join(target.path, relative);
              if (!fs.file(destination).parent.existsSync()) {
                fs.file(destination).parent.createSync();
              }
              entity.copySync(destination);
            }
          }
          return FakeProcessResult()..exitCode = 0;
        });
      }, overrides: <Type, Generator>{
        ProcessManager: () => MockProcessManager(),
        Platform: () => mockPlatform,
      });
    });

    test('Copies files to correct cache directory', () => testbed.run(() async {
      await buildSystem.build('unpack_macos', environment, const BuildSystemConfig());

      expect(fs.directory('macos/Flutter/FlutterMacOS.framework').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/FlutterMacOS').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FLEOpenGLContextHandling.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FLEReshapeListener.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FLEView.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FLEViewController.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FlutterBinaryMessenger.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FlutterChannels.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FlutterCodecs.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FlutterMacOS.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FlutterPluginMacOS.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Headers/FlutterPluginRegisrarMacOS.h').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Modules/module.modulemap').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Resources/icudtl.dat').existsSync(), true);
      expect(fs.file('macos/Flutter/FlutterMacOS.framework/Resources/info.plist').existsSync(), true);
    }));
  });
}

class MockPlatform extends Mock implements Platform {}

class MockProcessManager extends Mock implements ProcessManager {}
class FakeProcessResult implements ProcessResult {
  @override
  int exitCode;

  @override
  int pid = 0;

  @override
  String stderr = '';

  @override
  String stdout = '';
}