// 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.

// @dart = 2.8

import 'package:file/memory.dart';
import 'package:flutter_tools/src/android/android_studio.dart';
import 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/platform.dart';
import 'package:flutter_tools/src/base/version.dart';
import 'package:flutter_tools/src/globals_null_migrated.dart' as globals;
import 'package:flutter_tools/src/ios/plist_parser.dart';
import 'package:test/fake.dart';

import '../../src/common.dart';
import '../../src/context.dart';
import '../../src/fake_process_manager.dart';

const String homeLinux = '/home/me';
const String homeMac = '/Users/me';

const Map<String, dynamic> macStudioInfoPlist = <String, dynamic>{
  'CFBundleGetInfoString': 'Android Studio 3.3, build AI-182.5107.16.33.5199772. Copyright JetBrains s.r.o., (c) 2000-2018',
  'CFBundleShortVersionString': '3.3',
  'CFBundleVersion': 'AI-182.5107.16.33.5199772',
  'JVMOptions': <String, dynamic>{
    'Properties': <String, dynamic>{
      'idea.paths.selector': 'AndroidStudio3.3',
      'idea.platform.prefix': 'AndroidStudio',
    },
  },
};

const Map<String, dynamic> macStudioInfoPlist4_1 = <String, dynamic>{
  'CFBundleGetInfoString': 'Android Studio 4.1, build AI-201.8743.12.41.6858069. Copyright JetBrains s.r.o., (c) 2000-2020',
  'CFBundleShortVersionString': '4.1',
  'CFBundleVersion': 'AI-201.8743.12.41.6858069',
  'JVMOptions': <String, dynamic>{
    'Properties': <String, dynamic>{
      'idea.vendor.name' : 'Google',
      'idea.paths.selector': 'AndroidStudio4.1',
      'idea.platform.prefix': 'AndroidStudio',
    },
  },
};

final Platform linuxPlatform = FakePlatform(
  operatingSystem: 'linux',
  environment: <String, String>{'HOME': homeLinux},
);

final Platform windowsPlatform = FakePlatform(
  operatingSystem: 'windows',
  environment: <String, String>{
    'LOCALAPPDATA': r'C:\Users\Dash\AppData\Local',
  }
);

Platform macPlatform() {
  return FakePlatform(
    operatingSystem: 'macos',
    environment: <String, String>{'HOME': homeMac},
  );
}

void main() {
  FileSystem fileSystem;

  setUp(() {
    fileSystem = MemoryFileSystem.test();
  });

  testUsingContext('pluginsPath on Linux extracts custom paths from home dir', () {
    const String installPath = '/opt/android-studio-with-cheese-5.0';
    const String studioHome = '$homeLinux/.AndroidStudioWithCheese5.0';
    const String homeFile = '$studioHome/system/.home';
    globals.fs.directory(installPath).createSync(recursive: true);
    globals.fs.file(homeFile).createSync(recursive: true);
    globals.fs.file(homeFile).writeAsStringSync(installPath);

    final AndroidStudio studio =
      AndroidStudio.fromHomeDot(globals.fs.directory(studioHome));
    expect(studio, isNotNull);
    expect(studio.pluginsPath,
        equals('/home/me/.AndroidStudioWithCheese5.0/config/plugins'));
  }, overrides: <Type, Generator>{
    FileSystem: () => fileSystem,
    ProcessManager: () => FakeProcessManager.any(),
    // Custom home paths are not supported on macOS nor Windows yet,
    // so we force the platform to fake Linux here.
    Platform: () => linuxPlatform,
    FileSystemUtils: () => FileSystemUtils(
      fileSystem: fileSystem,
      platform: linuxPlatform,
    ),
  });

  group('pluginsPath on Mac', () {
    FileSystemUtils fsUtils;
    Platform platform;
    FakePlistUtils plistUtils;
    FakeProcessManager processManager;

    setUp(() {
      plistUtils = FakePlistUtils();
      platform = macPlatform();
      fsUtils = FileSystemUtils(
        fileSystem: fileSystem,
        platform: platform,
      );
      processManager = FakeProcessManager.empty();
    });

    testUsingContext('Can discover Android Studio >=4.1 location on Mac', () {
      final String studioInApplicationPlistFolder = globals.fs.path.join(
        '/',
        'Application',
        'Android Studio.app',
        'Contents',
      );
      globals.fs.directory(studioInApplicationPlistFolder).createSync(recursive: true);

      final String plistFilePath = globals.fs.path.join(studioInApplicationPlistFolder, 'Info.plist');
      plistUtils.fileContents[plistFilePath] = macStudioInfoPlist4_1;
      final AndroidStudio studio = AndroidStudio.fromMacOSBundle(
        globals.fs.directory(studioInApplicationPlistFolder)?.parent?.path,
      );

      expect(studio, isNotNull);
      expect(studio.pluginsPath, equals(globals.fs.path.join(
        homeMac,
        'Library',
        'Application Support',
        'Google',
        'AndroidStudio4.1',
      )));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      FileSystemUtils: () => fsUtils,
      ProcessManager: () => FakeProcessManager.any(),
      // Custom home paths are not supported on macOS nor Windows yet,
      // so we force the platform to fake Linux here.
      Platform: () => platform,
      PlistParser: () => plistUtils,
    });

    testUsingContext('Can discover Android Studio <4.1 location on Mac', () {
      final String studioInApplicationPlistFolder = globals.fs.path.join(
        '/',
        'Application',
        'Android Studio.app',
        'Contents',
      );
      globals.fs.directory(studioInApplicationPlistFolder).createSync(recursive: true);

      final String plistFilePath = globals.fs.path.join(studioInApplicationPlistFolder, 'Info.plist');
      plistUtils.fileContents[plistFilePath] = macStudioInfoPlist;
      final AndroidStudio studio = AndroidStudio.fromMacOSBundle(
        globals.fs.directory(studioInApplicationPlistFolder)?.parent?.path,
      );

      expect(studio, isNotNull);
      expect(studio.pluginsPath, equals(globals.fs.path.join(
        homeMac,
        'Library',
        'Application Support',
        'AndroidStudio3.3',
      )));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      FileSystemUtils: () => fsUtils,
      ProcessManager: () => FakeProcessManager.any(),
      // Custom home paths are not supported on macOS nor Windows yet,
      // so we force the platform to fake Linux here.
      Platform: () => platform,
      PlistParser: () => plistUtils,
    });

    testUsingContext('Can discover installation from Spotlight query', () {
      // One in expected location.
      final String studioInApplication = fileSystem.path.join(
        '/',
        'Application',
        'Android Studio.app',
      );
      final String studioInApplicationPlistFolder = fileSystem.path.join(
        studioInApplication,
        'Contents',
      );
      fileSystem.directory(studioInApplicationPlistFolder).createSync(recursive: true);
      final String plistFilePath = fileSystem.path.join(studioInApplicationPlistFolder, 'Info.plist');
      plistUtils.fileContents[plistFilePath] = macStudioInfoPlist4_1;

      // Two in random location only Spotlight knows about.
      final String randomLocation1 = fileSystem.path.join(
        '/',
        'random',
        'Android Studio Preview.app',
      );
      final String randomLocation1PlistFolder = fileSystem.path.join(
        randomLocation1,
        'Contents',
      );
      fileSystem.directory(randomLocation1PlistFolder).createSync(recursive: true);
      final String randomLocation1PlistPath = fileSystem.path.join(randomLocation1PlistFolder, 'Info.plist');
      plistUtils.fileContents[randomLocation1PlistPath] = macStudioInfoPlist4_1;

      final String randomLocation2 = fileSystem.path.join(
        '/',
        'random',
        'Android Studio with Blaze.app',
      );
      final String randomLocation2PlistFolder = fileSystem.path.join(
        randomLocation2,
        'Contents',
      );
      fileSystem.directory(randomLocation2PlistFolder).createSync(recursive: true);
      final String randomLocation2PlistPath = fileSystem.path.join(randomLocation2PlistFolder, 'Info.plist');
      plistUtils.fileContents[randomLocation2PlistPath] = macStudioInfoPlist4_1;
      final String javaBin = fileSystem.path.join('jre', 'jdk', 'Contents', 'Home', 'bin', 'java');

      // Spotlight finds the one known and two random installations.
      processManager.addCommands(<FakeCommand>[
        FakeCommand(
          command: const <String>[
            'mdfind',
            'kMDItemCFBundleIdentifier="com.google.android.studio*"',
          ],
          stdout: '$randomLocation1\n$randomLocation2\n$studioInApplication',
        ),
        FakeCommand(
          command: <String>[
            fileSystem.path.join(randomLocation1, 'Contents', javaBin),
            '-version',
          ],
        ),
        FakeCommand(
          command: <String>[
            fileSystem.path.join(randomLocation2, 'Contents', javaBin),
            '-version',
          ],
        ),
        FakeCommand(
          command: <String>[
            fileSystem.path.join(studioInApplicationPlistFolder, javaBin),
            '-version',
          ],
        ),
      ]);

      // Results are de-duplicated, only 3 installed.
      expect(AndroidStudio.allInstalled().length, 3);
      expect(processManager, hasNoRemainingExpectations);
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      FileSystemUtils: () => fsUtils,
      ProcessManager: () => processManager,
      // Custom home paths are not supported on macOS nor Windows yet,
      // so we force the platform to fake Linux here.
      Platform: () => platform,
      PlistParser: () => plistUtils,
    });

    testUsingContext('finds latest valid install', () {
      final String applicationPlistFolder = globals.fs.path.join(
        '/',
        'Applications',
        'Android Studio.app',
        'Contents',
      );
      globals.fs.directory(applicationPlistFolder).createSync(recursive: true);

      final String applicationsPlistFilePath = globals.fs.path.join(applicationPlistFolder, 'Info.plist');
      plistUtils.fileContents[applicationsPlistFilePath] = macStudioInfoPlist;

      final String homeDirectoryPlistFolder = globals.fs.path.join(
        globals.fsUtils.homeDirPath,
        'Applications',
        'Android Studio.app',
        'Contents',
      );
      globals.fs.directory(homeDirectoryPlistFolder).createSync(recursive: true);

      final String homeDirectoryPlistFilePath = globals.fs.path.join(homeDirectoryPlistFolder, 'Info.plist');
      plistUtils.fileContents[homeDirectoryPlistFilePath] = macStudioInfoPlist4_1;

      expect(AndroidStudio.allInstalled().length, 2);
      expect(AndroidStudio.latestValid().version, Version(4, 1, 0));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      FileSystemUtils: () => fsUtils,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => platform,
      PlistParser: () => plistUtils,
    });

    testUsingContext('extracts custom paths for directly downloaded Android Studio on Mac', () {
      final String studioInApplicationPlistFolder = globals.fs.path.join(
        '/',
        'Application',
        'Android Studio.app',
        'Contents',
      );
      globals.fs.directory(studioInApplicationPlistFolder).createSync(recursive: true);

      final String plistFilePath = globals.fs.path.join(studioInApplicationPlistFolder, 'Info.plist');
      plistUtils.fileContents[plistFilePath] = macStudioInfoPlist;
      final AndroidStudio studio = AndroidStudio.fromMacOSBundle(
        globals.fs.directory(studioInApplicationPlistFolder)?.parent?.path,
      );
      expect(studio, isNotNull);
      expect(studio.pluginsPath, equals(globals.fs.path.join(
        homeMac,
        'Library',
        'Application Support',
        'AndroidStudio3.3',
      )));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      FileSystemUtils: () => fsUtils,
      ProcessManager: () => FakeProcessManager.any(),
      // Custom home paths are not supported on macOS nor Windows yet,
      // so we force the platform to fake Linux here.
      Platform: () => platform,
      PlistParser: () => plistUtils,
    });

    testUsingContext('extracts custom paths for Android Studio downloaded by JetBrainsToolbox on Mac', () {
      final String jetbrainsStudioInApplicationPlistFolder = globals.fs.path.join(
        homeMac,
        'Application',
        'JetBrains Toolbox',
        'Android Studio.app',
        'Contents',
      );
      globals.fs.directory(jetbrainsStudioInApplicationPlistFolder).createSync(recursive: true);
      const Map<String, dynamic> jetbrainsInfoPlist = <String, dynamic>{
        'CFBundleLongVersionString': '3.3',
        'CFBundleShortVersionString': '3.3',
        'CFBundleVersion': '3.3',
        'JetBrainsToolboxApp': '$homeMac/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/183.5256920/Android Studio 3.3.app',
      };
      final String jetbrainsPlistFilePath = globals.fs.path.join(
        jetbrainsStudioInApplicationPlistFolder,
        'Info.plist',
      );
      plistUtils.fileContents[jetbrainsPlistFilePath] = jetbrainsInfoPlist;

      final String studioInApplicationPlistFolder = globals.fs.path.join(
        globals.fs.path.join(homeMac,'Library','Application Support'),
        'JetBrains',
        'Toolbox',
        'apps',
        'AndroidStudio',
        'ch-0',
        '183.5256920',
        globals.fs.path.join('Android Studio 3.3.app', 'Contents'),
      );
      globals.fs.directory(studioInApplicationPlistFolder).createSync(recursive: true);
      final String studioPlistFilePath = globals.fs.path.join(
        studioInApplicationPlistFolder,
        'Info.plist',
      );
      plistUtils.fileContents[studioPlistFilePath] = macStudioInfoPlist;

      final AndroidStudio studio = AndroidStudio.fromMacOSBundle(
        globals.fs.directory(jetbrainsStudioInApplicationPlistFolder)?.parent?.path,
      );
      expect(studio, isNotNull);
      expect(studio.pluginsPath, equals(globals.fs.path.join(
        homeMac,
        'Library',
        'Application Support',
        'AndroidStudio3.3',
      )));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      FileSystemUtils: () => fsUtils,
      ProcessManager: () => FakeProcessManager.any(),
      // Custom home paths are not supported on macOS nor Windows yet,
      // so we force the platform to fake Linux here.
      Platform: () => platform,
      PlistParser: () => plistUtils,
    });
  });

  FileSystem windowsFileSystem;

  setUp(() {
    windowsFileSystem = MemoryFileSystem.test(style: FileSystemStyle.windows);
  });

  testUsingContext('Can discover Android Studio 4.1 location on Windows', () {
    windowsFileSystem.file(r'C:\Users\Dash\AppData\Local\Google\AndroidStudio4.1\.home')
      ..createSync(recursive: true)
      ..writeAsStringSync(r'C:\Program Files\AndroidStudio');
    windowsFileSystem
      .directory(r'C:\Program Files\AndroidStudio')
      .createSync(recursive: true);

    final AndroidStudio studio = AndroidStudio.allInstalled().single;

    expect(studio.version, Version(4, 1, 0));
    expect(studio.studioAppName, 'Android Studio 4.1');
  }, overrides: <Type, Generator>{
    Platform: () => windowsPlatform,
    FileSystem: () => windowsFileSystem,
    ProcessManager: () => FakeProcessManager.any(),
  });

  testUsingContext('Does not discover Android Studio 4.1 location on Windows if LOCALAPPDATA is null', () {
    windowsFileSystem.file(r'C:\Users\Dash\AppData\Local\Google\AndroidStudio4.1\.home')
      ..createSync(recursive: true)
      ..writeAsStringSync(r'C:\Program Files\AndroidStudio');
    windowsFileSystem
      .directory(r'C:\Program Files\AndroidStudio')
      .createSync(recursive: true);

    expect(AndroidStudio.allInstalled(), isEmpty);
  }, overrides: <Type, Generator>{
    Platform: () => FakePlatform(
      operatingSystem: 'windows',
      environment: <String, String>{}, // Does not include LOCALAPPDATA
    ),
    FileSystem: () => windowsFileSystem,
    ProcessManager: () => FakeProcessManager.any(),
  });

  group('Installation detection on Linux', () {
    FileSystemUtils fsUtils;

    setUp(() {
      fsUtils = FileSystemUtils(
        fileSystem: fileSystem,
        platform: linuxPlatform,
      );
    });

    testUsingContext('Discover Android Studio <4.1', () {
      const String studioHomeFilePath =
          '$homeLinux/.AndroidStudio4.0/system/.home';
      const String studioInstallPath = '$homeLinux/AndroidStudio';

      globals.fs.file(studioHomeFilePath)
        ..createSync(recursive: true)
        ..writeAsStringSync(studioInstallPath);

      globals.fs.directory(studioInstallPath).createSync();

      final AndroidStudio studio = AndroidStudio.allInstalled().single;

      expect(studio.version, Version(4, 0, 0));
      expect(studio.studioAppName, 'AndroidStudio');
      expect(
        studio.pluginsPath,
        '/home/me/.AndroidStudio4.0/config/plugins',
      );
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      FileSystemUtils: () => fsUtils,
      Platform: () => linuxPlatform,
      ProcessManager: () => FakeProcessManager.any(),
    });

    testUsingContext('Discover Android Studio >=4.1', () {
      const String studioHomeFilePath =
          '$homeLinux/.cache/Google/AndroidStudio4.1/.home';
      const String studioInstallPath = '$homeLinux/AndroidStudio';

      globals.fs.file(studioHomeFilePath)
        ..createSync(recursive: true)
        ..writeAsStringSync(studioInstallPath);

      globals.fs.directory(studioInstallPath).createSync();

      final AndroidStudio studio = AndroidStudio.allInstalled().single;

      expect(studio.version, Version(4, 1, 0));
      expect(studio.studioAppName, 'AndroidStudio');
      expect(
        studio.pluginsPath,
        '/home/me/.local/share/Google/AndroidStudio4.1',
      );
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      FileSystemUtils: () => fsUtils,
      Platform: () => linuxPlatform,
      ProcessManager: () => FakeProcessManager.any(),
    });

    testUsingContext('Discover when installed with Toolbox', () {
      const String studioHomeFilePath =
          '$homeLinux/.cache/Google/AndroidStudio4.1/.home';
      const String studioInstallPath =
          '$homeLinux/.local/share/JetBrains/Toolbox/apps/AndroidStudio/ch-0/201.7042882';
      const String pluginsInstallPath = '$studioInstallPath.plugins';

      globals.fs.file(studioHomeFilePath)
        ..createSync(recursive: true)
        ..writeAsStringSync(studioInstallPath);

      globals.fs.directory(studioInstallPath).createSync(recursive: true);
      globals.fs.directory(pluginsInstallPath).createSync();

      final AndroidStudio studio = AndroidStudio.allInstalled().single;

      expect(studio.version, Version(4, 1, 0));
      expect(studio.studioAppName, 'AndroidStudio');
      expect(
        studio.pluginsPath,
        pluginsInstallPath,
      );
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      FileSystemUtils: () => fsUtils,
      Platform: () => linuxPlatform,
      ProcessManager: () => FakeProcessManager.any(),
    });
  });
}

class FakePlistUtils extends Fake implements PlistParser {
  final Map<String, Map<String, dynamic>> fileContents = <String, Map<String, dynamic>>{};

  @override
  Map<String, dynamic> parseFile(String plistFilePath) {
    return fileContents[plistFilePath];
  }
}
