// 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 'package:file/memory.dart';
import 'package:flutter_tools/src/android/android_sdk.dart';
import 'package:flutter_tools/src/base/config.dart';
import 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/platform.dart';
import 'package:flutter_tools/src/globals.dart' as globals;

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

void main() {
  late MemoryFileSystem fileSystem;
  late FakeProcessManager processManager;
  late Config config;

  setUp(() {
    fileSystem = MemoryFileSystem.test();
    processManager = FakeProcessManager.empty();
    config = Config.test();
  });

  group('AndroidSdk', () {
    testUsingContext('constructing an AndroidSdk handles no matching lines in build.prop', () {
      final Directory sdkDir = createSdkDirectory(
        fileSystem: fileSystem,
        withAndroidN: true,
        // Does not have valid version string
        buildProp: '\n\n\n',
      );
      config.setValue('android-sdk', sdkDir.path);

      try {
        AndroidSdk.locateAndroidSdk()!;
      } on StateError catch (err) {
        fail('sdk.reinitialize() threw a StateError:\n$err');
      }
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Config: () => config,
    });

    testUsingContext('parse sdk', () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      expect(sdk.latestVersion, isNotNull);
      expect(sdk.latestVersion!.sdkLevel, 23);
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Config: () => config,
    });

    testUsingContext('parse sdk N', () {
      final Directory sdkDir = createSdkDirectory(
        withAndroidN: true,
        fileSystem: fileSystem,
      );
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      expect(sdk.latestVersion, isNotNull);
      expect(sdk.latestVersion!.sdkLevel, 24);
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Config: () => config,
    });

    testUsingContext('returns sdkmanager path under cmdline tools on Linux/macOS', () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      fileSystem.file(
        fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'latest', 'bin', 'sdkmanager')
      ).createSync(recursive: true);

      expect(sdk.sdkManagerPath, fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'latest', 'bin', 'sdkmanager'));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(),
      Config: () => config,
    });

    testUsingContext('returns sdkmanager path under cmdline tools (highest version) on Linux/macOS', () {
      final Directory sdkDir = createSdkDirectory(
        fileSystem: fileSystem,
        withSdkManager: false,
      );
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      final List<String> versions = <String>['3.0', '2.1', '1.0'];
      for (final String version in versions) {
        fileSystem.file(
          fileSystem.path.join(sdk.directory.path, 'cmdline-tools', version, 'bin', 'sdkmanager')
        ).createSync(recursive: true);
      }

      expect(sdk.sdkManagerPath, fileSystem.path.join(sdk.directory.path, 'cmdline-tools', '3.0', 'bin', 'sdkmanager'));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(),
      Config: () => config,
    });

    testUsingContext('Does not return sdkmanager under deprecated tools component', () {
      final Directory sdkDir = createSdkDirectory(
        fileSystem: fileSystem,
        withSdkManager: false,
      );
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      fileSystem.file(
        fileSystem.path.join(sdk.directory.path, 'tools/bin/sdkmanager')
      ).createSync(recursive: true);

      expect(sdk.sdkManagerPath, null);
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(),
      Config: () => config,
    });

    testUsingContext('Can look up cmdline tool from deprecated tools path', () {
      final Directory sdkDir = createSdkDirectory(
        fileSystem: fileSystem,
        withSdkManager: false,
      );
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      fileSystem.file(
        fileSystem.path.join(sdk.directory.path, 'tools/bin/foo')
      ).createSync(recursive: true);

      expect(sdk.getCmdlineToolsPath('foo'), '/.tmp_rand0/flutter_mock_android_sdk.rand0/tools/bin/foo');
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(),
      Config: () => config,
    });

    testUsingContext('Caches adb location after first access', () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      final File adbFile = fileSystem.file(
        fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'adb.exe')
      )..createSync(recursive: true);

      expect(sdk.adbPath,  fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'adb.exe'));

      adbFile.deleteSync(recursive: true);

      expect(sdk.adbPath,  fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'adb.exe'));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(operatingSystem: 'windows'),
      Config: () => config,
    });

    testUsingContext('returns sdkmanager.bat path under cmdline tools for windows', () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      fileSystem.file(
        fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'latest', 'bin', 'sdkmanager.bat')
      ).createSync(recursive: true);

      expect(sdk.sdkManagerPath,
        fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'latest', 'bin', 'sdkmanager.bat'));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(operatingSystem: 'windows'),
      Config: () => config,
    });

    testUsingContext('returns sdkmanager version', () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);
      processManager.addCommand(
        const FakeCommand(
            command: <String>[
            '/.tmp_rand0/flutter_mock_android_sdk.rand0/cmdline-tools/latest/bin/sdkmanager',
            '--version',
          ],
          stdout: '26.1.1\n',
        ),
      );
      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;

      expect(sdk.sdkManagerVersion, '26.1.1');
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => processManager,
      Config: () => config,
      Platform: () => FakePlatform(environment: <String, String>{}),
    });

    testUsingContext('returns validate sdk is well formed', () {
      final Directory sdkDir = createBrokenSdkDirectory(fileSystem: fileSystem);
      processManager.addCommand(const FakeCommand(command: <String>[
        '/.tmp_rand0/flutter_mock_android_sdk.rand0/cmdline-tools/latest/bin/sdkmanager',
        '--version',
      ]));
      config.setValue('android-sdk', sdkDir.path);
      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;

      final List<String> validationIssues = sdk.validateSdkWellFormed();
      expect(validationIssues.first, 'No valid Android SDK platforms found in'
        ' /.tmp_rand0/flutter_mock_android_sdk.rand0/platforms. Candidates were:\n'
        '  - android-22\n'
        '  - android-23');
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => processManager,
      Config: () => config,
      Platform: () => FakePlatform(),
    });

    testUsingContext('does not throw on sdkmanager version check failure', () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);
      processManager.addCommand(
        const FakeCommand(
          command: <String>[
            '/.tmp_rand0/flutter_mock_android_sdk.rand0/cmdline-tools/latest/bin/sdkmanager',
            '--version',
          ],
          stdout: '\n',
          stderr: 'Mystery error',
          exitCode: 1,
        ),
      );

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;

      expect(sdk.sdkManagerVersion, isNull);
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => processManager,
      Config: () => config,
      Platform: () => FakePlatform(environment: <String, String>{}),
    });

    testUsingContext('throws on sdkmanager version check if sdkmanager not found', () {
      final Directory sdkDir = createSdkDirectory(withSdkManager: false, fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);
      processManager.excludedExecutables.add('/.tmp_rand0/flutter_mock_android_sdk.rand0/cmdline-tools/latest/bin/sdkmanager');
      final AndroidSdk? sdk = AndroidSdk.locateAndroidSdk();

      expect(() => sdk!.sdkManagerVersion, throwsToolExit());
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => processManager,
      Config: () => config,
      Platform: () => FakePlatform(),
    });

    testUsingContext('returns avdmanager path under cmdline tools', () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      fileSystem.file(
        fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'latest', 'bin', 'avdmanager')
      ).createSync(recursive: true);

      expect(sdk.avdManagerPath, fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'latest', 'bin', 'avdmanager'));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(),
      Config: () => config,
    });

    testUsingContext('returns avdmanager path under cmdline tools on windows', () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      fileSystem.file(
        fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'latest', 'bin', 'avdmanager.bat')
      ).createSync(recursive: true);

      expect(sdk.avdManagerPath, fileSystem.path.join(sdk.directory.path, 'cmdline-tools', 'latest', 'bin', 'avdmanager.bat'));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(operatingSystem: 'windows'),
      Config: () => config,
    });

    testUsingContext("returns avdmanager path under tools if cmdline doesn't exist", () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      fileSystem.file(
        fileSystem.path.join(sdk.directory.path, 'tools', 'bin', 'avdmanager')
      ).createSync(recursive: true);

      expect(sdk.avdManagerPath, fileSystem.path.join(sdk.directory.path, 'tools', 'bin', 'avdmanager'));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(),
      Config: () => config,
    });

    testUsingContext("returns avdmanager path under tools if cmdline doesn't exist on windows", () {
      final Directory sdkDir = createSdkDirectory(fileSystem: fileSystem);
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk.locateAndroidSdk()!;
      fileSystem.file(
        fileSystem.path.join(sdk.directory.path, 'tools', 'bin', 'avdmanager.bat')
      ).createSync(recursive: true);

      expect(sdk.avdManagerPath, fileSystem.path.join(sdk.directory.path, 'tools', 'bin', 'avdmanager.bat'));
    }, overrides: <Type, Generator>{
      FileSystem: () => fileSystem,
      ProcessManager: () => FakeProcessManager.any(),
      Platform: () => FakePlatform(operatingSystem: 'windows'),
      Config: () => config,
    });
  });

  const Map<String, String> llvmHostDirectoryName = <String, String>{
    'macos': 'darwin-x86_64',
    'linux': 'linux-x86_64',
    'windows': 'windows-x86_64',
  };

  for (final String operatingSystem in <String>['windows', 'linux', 'macos']) {
    final FileSystem fileSystem;
    final String extension;
    if (operatingSystem == 'windows') {
      fileSystem = MemoryFileSystem.test(style: FileSystemStyle.windows);
      extension = '.exe';
    } else {
      fileSystem = MemoryFileSystem.test();
      extension = '';
    }
    testWithoutContext('ndk executables $operatingSystem', () {
      final Platform platform = FakePlatform(operatingSystem: operatingSystem);
      final Directory sdkDir = createSdkDirectory(
        fileSystem: fileSystem,
        platform: platform,
      );
      config.setValue('android-sdk', sdkDir.path);

      final AndroidSdk sdk = AndroidSdk(sdkDir, fileSystem: fileSystem);
      late File clang;
      late File ar;
      late File ld;
      const List<String> versions = <String>['22.1.7171670', '24.0.8215888'];
      for (final String version in versions) {
        final Directory binDir = sdk.directory
            .childDirectory('ndk')
            .childDirectory(version)
            .childDirectory('toolchains')
            .childDirectory('llvm')
            .childDirectory('prebuilt')
            .childDirectory(llvmHostDirectoryName[operatingSystem]!)
            .childDirectory('bin')
          ..createSync(recursive: true);
        // Save the last version.
        clang = binDir.childFile('clang$extension')..createSync();
        ar = binDir.childFile('llvm-ar$extension')..createSync();
        ld = binDir.childFile('ld.lld$extension')..createSync();
      }
      // Check the last NDK version is used.
      expect(
        sdk.getNdkClangPath(platform: platform, config: config),
        clang.path,
      );
      expect(
        sdk.getNdkArPath(platform: platform, config: config),
        ar.path,
      );
      expect(
        sdk.getNdkLdPath(platform: platform, config: config),
        ld.path,
      );
    });

    for (final String envVar in <String>[
      kAndroidNdkHome,
      kAndroidNdkPath,
      kAndroidNdkRoot,
    ]) {
      final Directory ndkDir = fileSystem.systemTempDirectory
          .createTempSync('flutter_mock_android_ndk.');
      testWithoutContext('ndk executables with $operatingSystem $envVar', () {
        final Platform platform = FakePlatform(
          operatingSystem: operatingSystem,
          environment: <String, String>{
            envVar: ndkDir.path,
          },
        );
        final Directory sdkDir =
            createSdkDirectory(fileSystem: fileSystem, platform: platform);
        config.setValue('android-sdk', sdkDir.path);

        final Directory binDir = ndkDir
            .childDirectory('toolchains')
            .childDirectory('llvm')
            .childDirectory('prebuilt')
            .childDirectory(llvmHostDirectoryName[operatingSystem]!)
            .childDirectory('bin')
          ..createSync(recursive: true);
        final File clang = binDir.childFile('clang$extension')..createSync();
        final File ar = binDir.childFile('llvm-ar$extension')..createSync();
        final File ld = binDir.childFile('ld.lld$extension')..createSync();

        final AndroidSdk sdk = AndroidSdk(sdkDir, fileSystem: fileSystem);
        expect(
          sdk.getNdkClangPath(platform: platform, config: config),
          clang.path,
        );
        expect(
          sdk.getNdkArPath(platform: platform, config: config),
          ar.path,
        );
        expect(
          sdk.getNdkLdPath(platform: platform, config: config),
          ld.path,
        );
      });
    }

    testWithoutContext('ndk executables with config override $operatingSystem',
        () {
      final Platform platform = FakePlatform(operatingSystem: operatingSystem);
      final Directory sdkDir = createSdkDirectory(
        fileSystem: fileSystem,
        platform: platform,
      );
      final Directory ndkDir = fileSystem.systemTempDirectory
          .createTempSync('flutter_mock_android_ndk.');
      config.setValue('android-sdk', sdkDir.path);
      config.setValue('android-ndk', ndkDir.path);

      final Directory binDir = ndkDir
          .childDirectory('toolchains')
          .childDirectory('llvm')
          .childDirectory('prebuilt')
          .childDirectory(llvmHostDirectoryName[operatingSystem]!)
          .childDirectory('bin')
        ..createSync(recursive: true);
      final File clang = binDir.childFile('clang$extension')..createSync();
      final File ar = binDir.childFile('llvm-ar$extension')..createSync();
      final File ld = binDir.childFile('ld.lld$extension')..createSync();

      final AndroidSdk sdk = AndroidSdk(sdkDir, fileSystem: fileSystem);
      expect(
        sdk.getNdkClangPath(platform: platform, config: config),
        clang.path,
      );
      expect(
        sdk.getNdkArPath(platform: platform, config: config),
        ar.path,
      );
      expect(
        sdk.getNdkLdPath(platform: platform, config: config),
        ld.path,
      );
    });
  }
}

/// A broken SDK installation.
Directory createBrokenSdkDirectory({
  bool withAndroidN = false,
  bool withSdkManager = true,
  required FileSystem fileSystem,
}) {
  final Directory dir = fileSystem.systemTempDirectory.createTempSync('flutter_mock_android_sdk.');
  _createSdkFile(dir, 'licenses/dummy');
  _createSdkFile(dir, 'platform-tools/adb');

  _createSdkFile(dir, 'build-tools/sda/aapt');
  _createSdkFile(dir, 'build-tools/af/aapt');
  _createSdkFile(dir, 'build-tools/ljkasd/aapt');

  _createSdkFile(dir, 'platforms/android-22/android.jar');
  _createSdkFile(dir, 'platforms/android-23/android.jar');

  return dir;
}

void _createSdkFile(Directory dir, String filePath, { String? contents }) {
  final File file = dir.childFile(filePath);
  file.createSync(recursive: true);
  if (contents != null) {
    file.writeAsStringSync(contents, flush: true);
  }
}

Directory createSdkDirectory({
  bool withAndroidN = false,
  bool withSdkManager = true,
  bool withPlatformTools = true,
  bool withBuildTools = true,
  required FileSystem fileSystem,
  String buildProp = _buildProp,
  Platform? platform,
}) {
  platform ??= globals.platform;
  final Directory dir = fileSystem.systemTempDirectory.createTempSync('flutter_mock_android_sdk.');
  final String exe = platform.isWindows ? '.exe' : '';
  final String bat = platform.isWindows ? '.bat' : '';

  void createDir(Directory dir, String path) {
    final Directory directory = dir.fileSystem.directory(dir.fileSystem.path.join(dir.path, path));
    directory.createSync(recursive: true);
  }

  createDir(dir, 'licenses');

  if (withPlatformTools) {
    _createSdkFile(dir, 'platform-tools/adb$exe');
  }

  if (withBuildTools) {
    _createSdkFile(dir, 'build-tools/19.1.0/aapt$exe');
    _createSdkFile(dir, 'build-tools/22.0.1/aapt$exe');
    _createSdkFile(dir, 'build-tools/23.0.2/aapt$exe');
    if (withAndroidN) {
      _createSdkFile(dir, 'build-tools/24.0.0-preview/aapt$exe');
    }
  }

  _createSdkFile(dir, 'platforms/android-22/android.jar');
  _createSdkFile(dir, 'platforms/android-23/android.jar');
  if (withAndroidN) {
    _createSdkFile(dir, 'platforms/android-N/android.jar');
    _createSdkFile(dir, 'platforms/android-N/build.prop', contents: buildProp);
  }

  if (withSdkManager) {
    _createSdkFile(dir, 'cmdline-tools/latest/bin/sdkmanager$bat');
  }
  return dir;
}

const String _buildProp = r'''
ro.build.version.incremental=1624448
ro.build.version.sdk=24
ro.build.version.codename=REL
''';