// 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:flutter_tools/src/base/io.dart';
import 'package:flutter_tools/src/base/logger.dart';
import 'package:flutter_tools/src/base/os.dart';
import 'package:flutter_tools/src/doctor_validator.dart';
import 'package:flutter_tools/src/windows/windows_version_validator.dart';
import 'package:test/fake.dart';

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

/// Fake Windows version of [OperatingSystemUtils] to use for testing.
class FakeValidOperatingSystemUtils extends Fake implements OperatingSystemUtils {
  FakeValidOperatingSystemUtils([this.name = 'Microsoft Windows [Version 11.0.22621.963]']);

  @override
  final String name;
}

class FakeProcessLister extends Fake implements ProcessLister {
  FakeProcessLister({required this.result, this.exitCode = 0, this.powershellAvailable = true});
  final String result;
  final int exitCode;
  final bool powershellAvailable;

  @override
  Future<ProcessResult> getProcessesWithPath() async {
    return ProcessResult(0, exitCode, result, null);
  }

  @override
  bool canRunPowershell() => powershellAvailable;
}

FakeProcessLister ofdRunning() {
  return FakeProcessLister(result: r'Path: "C:\Program Files\Topaz OFD\Warsaw\core.exe"');
}

FakeProcessLister ofdNotRunning() {
  return FakeProcessLister(result: r'Path: "C:\Program Files\Google\Chrome\Application\chrome.exe');
}

FakeProcessLister failure() {
  return FakeProcessLister(
    result: r'Path: "C:\Program Files\Google\Chrome\Application\chrome.exe',
    exitCode: 10,
  );
}

FakeProcessLister powershellUnavailable() {
  return FakeProcessLister(result: '', powershellAvailable: false);
}

/// The expected validation result object for
/// a passing windows version test
ValidationResult validWindows11ValidationResult = ValidationResult(
  ValidationType.success,
  const <ValidationMessage>[],
  statusInfo: '11 Pro 64-bit, 23H2, 2009',
);

/// The expected validation result object for
/// a passing windows version test
ValidationResult invalidWindowsValidationResult = ValidationResult(
  ValidationType.missing,
  const <ValidationMessage>[],
  statusInfo: 'Unable to confirm if installed Windows version is 10 or greater',
);

ValidationResult ofdFoundRunning =
    ValidationResult(ValidationType.partial, const <ValidationMessage>[
      ValidationMessage.hint(
        'The Topaz OFD Security Module was detected on your machine. '
        'You may need to disable it to build Flutter applications.',
      ),
    ], statusInfo: 'Problem detected with Windows installation');

ValidationResult powershellUnavailableResult =
    ValidationResult(ValidationType.partial, const <ValidationMessage>[
      ValidationMessage.hint(
        'Failed to find ${ProcessLister.powershell} or ${ProcessLister.pwsh} on PATH',
      ),
    ], statusInfo: 'Problem detected with Windows installation');

ValidationResult getProcessFailed = ValidationResult(
  ValidationType.partial,
  const <ValidationMessage>[ValidationMessage.hint('Get-Process failed to complete')],
  statusInfo: 'Problem detected with Windows installation',
);

class FakeVersionExtractor extends Fake implements WindowsVersionExtractor {
  FakeVersionExtractor({required this.mockData});
  FakeVersionExtractor.win11ProX64()
    : this(
        mockData: WindowsVersionExtractionResult(
          caption: '11 Pro 64-bit',
          releaseId: '2009',
          displayVersion: '23H2',
        ),
      );
  final WindowsVersionExtractionResult mockData;

  @override
  Future<WindowsVersionExtractionResult> getDetails() async {
    return mockData;
  }
}

void main() {
  testWithoutContext('Successfully running windows version check on windows 10', () async {
    final windowsVersionValidator = WindowsVersionValidator(
      operatingSystemUtils: FakeValidOperatingSystemUtils(),
      processLister: ofdNotRunning(),
      versionExtractor: FakeVersionExtractor.win11ProX64(),
    );

    final ValidationResult result = await windowsVersionValidator.validate();

    expect(
      result.type,
      validWindows11ValidationResult.type,
      reason: 'The ValidationResult type should be the same (installed)',
    );
    expect(
      result.statusInfo,
      validWindows11ValidationResult.statusInfo,
      reason: 'The ValidationResult statusInfo messages should be the same',
    );
  });

  testWithoutContext('Successfully running windows version check on windows 10 for BR', () async {
    final windowsVersionValidator = WindowsVersionValidator(
      operatingSystemUtils: FakeValidOperatingSystemUtils(
        'Microsoft Windows [versão 10.0.22621.1105]',
      ),
      processLister: ofdNotRunning(),
      versionExtractor: FakeVersionExtractor.win11ProX64(),
    );

    final ValidationResult result = await windowsVersionValidator.validate();

    expect(
      result.type,
      validWindows11ValidationResult.type,
      reason: 'The ValidationResult type should be the same (installed)',
    );
    expect(
      result.statusInfo,
      validWindows11ValidationResult.statusInfo,
      reason: 'The ValidationResult statusInfo messages should be the same',
    );
  });

  testWithoutContext('Identifying a windows version before 10', () async {
    final windowsVersionValidator = WindowsVersionValidator(
      operatingSystemUtils: FakeValidOperatingSystemUtils(
        'Microsoft Windows [Version 8.0.22621.1105]',
      ),
      processLister: ofdNotRunning(),
      versionExtractor: FakeVersionExtractor.win11ProX64(),
    );

    final ValidationResult result = await windowsVersionValidator.validate();

    expect(
      result.type,
      invalidWindowsValidationResult.type,
      reason: 'The ValidationResult type should be the same (missing)',
    );
  });

  testWithoutContext('Unit testing on a regex pattern validator', () async {
    const testStr = r'''
OS Version:                10.0.19044 N/A Build 19044
OSz Version:                10.0.19044 N/A Build 19044
OxS Version:                10.0.19044 N/A Build 19044
OS Version:                10.19044 N/A Build 19044
OS Version:                10.x.19044 N/A Build 19044
OS Version:                10.0.19044 N/A Build 19044
OS Version:                .0.19044 N/A Build 19044
OS 版本:          10.0.22621 暂缺 Build 22621
''';

    final regex = RegExp(kWindowsOSVersionSemVerPattern, multiLine: true);
    final Iterable<RegExpMatch> matches = regex.allMatches(testStr);

    expect(matches.length, 5, reason: 'There should be only 5 matches for the pattern provided');
  });

  testWithoutContext('Successfully checks for Topaz OFD when it is running', () async {
    final validator = WindowsVersionValidator(
      operatingSystemUtils: FakeValidOperatingSystemUtils(),
      processLister: ofdRunning(),
      versionExtractor: FakeVersionExtractor.win11ProX64(),
    );
    final ValidationResult result = await validator.validate();
    expect(
      result.type,
      ofdFoundRunning.type,
      reason: 'The ValidationResult type should be the same (partial)',
    );
    expect(
      result.statusInfo,
      ofdFoundRunning.statusInfo,
      reason: 'The ValidationResult statusInfo should be the same',
    );
    expect(
      result.messages.length,
      1,
      reason: 'The ValidationResult should have precisely 1 message',
    );
    expect(
      result.messages[0].message,
      ofdFoundRunning.messages[0].message,
      reason: 'The ValidationMessage message should be the same',
    );
  });

  testWithoutContext('Reports missing powershell', () async {
    final validator = WindowsVersionValidator(
      operatingSystemUtils: FakeValidOperatingSystemUtils(),
      processLister: powershellUnavailable(),
      versionExtractor: FakeVersionExtractor.win11ProX64(),
    );
    final ValidationResult result = await validator.validate();
    expect(
      result.type,
      powershellUnavailableResult.type,
      reason: 'The ValidationResult type should be the same (partial)',
    );
    expect(
      result.statusInfo,
      powershellUnavailableResult.statusInfo,
      reason: 'The ValidationResult statusInfo should be the same',
    );
    expect(
      result.messages.length,
      1,
      reason: 'The ValidationResult should have precisely 1 message',
    );
    expect(
      result.messages[0].message,
      powershellUnavailableResult.messages[0].message,
      reason: 'The ValidationMessage message should be the same',
    );
  });

  testWithoutContext('Reports failure of Get-Process', () async {
    final validator = WindowsVersionValidator(
      operatingSystemUtils: FakeValidOperatingSystemUtils(),
      processLister: failure(),
      versionExtractor: FakeVersionExtractor(mockData: WindowsVersionExtractionResult.empty()),
    );
    final ValidationResult result = await validator.validate();
    expect(
      result.type,
      getProcessFailed.type,
      reason: 'The ValidationResult type should be the same (partial)',
    );
    expect(
      result.statusInfo,
      getProcessFailed.statusInfo,
      reason: 'The ValidationResult statusInfo should be the same',
    );
    expect(
      result.messages.length,
      1,
      reason: 'The ValidationResult should have precisely 1 message',
    );
    expect(
      result.messages[0].message,
      getProcessFailed.messages[0].message,
      reason: 'The ValidationMessage message should be the same',
    );
  });

  testWithoutContext('getProcessesWithPath successfully runs with powershell', () async {
    final processLister = ProcessLister(
      FakeProcessManager.list(<FakeCommand>[
        const FakeCommand(
          command: <String>[ProcessLister.powershell, '-command', 'Get-Process | Format-List Path'],
          stdout: ProcessLister.powershell,
        ),
      ])..excludedExecutables.add(ProcessLister.pwsh),
    );

    try {
      final ProcessResult result = await processLister.getProcessesWithPath();
      expect(result.stdout, ProcessLister.powershell);
    } catch (e) {
      fail('Unexpected exception: $e');
    }
  });

  testWithoutContext(
    'getProcessesWithPath falls back to pwsh when powershell is not on the path',
    () async {
      final processLister = ProcessLister(
        FakeProcessManager.list(<FakeCommand>[
          const FakeCommand(
            command: <String>[ProcessLister.pwsh, '-command', 'Get-Process | Format-List Path'],
            stdout: ProcessLister.pwsh,
          ),
        ])..excludedExecutables.add(ProcessLister.powershell),
      );

      try {
        final ProcessResult result = await processLister.getProcessesWithPath();
        expect(result.stdout, ProcessLister.pwsh);
      } catch (e) {
        fail('Unexpected exception: $e');
      }
    },
  );

  testWithoutContext(
    'getProcessesWithPath throws if both powershell and pwsh are not on PATH',
    () async {
      final processLister = ProcessLister(
        FakeProcessManager.empty()
          ..excludedExecutables.addAll(<String>[ProcessLister.powershell, ProcessLister.pwsh]),
      );

      try {
        final ProcessResult result = await processLister.getProcessesWithPath();
        fail('Should have thrown, but successfully ran ${result.stdout}');
      } on StateError {
        // Expected
      } catch (e) {
        fail('Unexpected exception: $e');
      }
    },
  );

  testWithoutContext(
    'Parses Caption, OSArchitecture, releaseId, and CurrentVersion from the OS',
    () async {
      final processManager = FakeProcessManager.list(<FakeCommand>[
        const FakeCommand(
          command: <Pattern>['wmic', 'os', 'get', 'Caption,OSArchitecture'],
          stdout: '''
Caption                          OSArchitecture
Microsoft Windows 10 Enterprise  64-bit
''',
        ),
        const FakeCommand(
          command: <Pattern>[
            'reg',
            'query',
            r'HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion',
            '/t',
            'REG_SZ',
          ],
          stdout: r'''
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion
    SystemRoot    REG_SZ    C:\Windows
    BuildBranch    REG_SZ    vb_release
    BuildGUID    REG_SZ    ffffffff-ffff-ffff-ffff-ffffffffffff
    BuildLab    REG_SZ    19041.vb_release.191206-1406
    BuildLabEx    REG_SZ    19041.1.amd64fre.vb_release.191206-1406
    CompositionEditionID    REG_SZ    Enterprise
    CurrentBuild    REG_SZ    19045
    CurrentBuildNumber    REG_SZ    19045
    CurrentType    REG_SZ    Multiprocessor Free
    CurrentVersion    REG_SZ    6.3
    EditionID    REG_SZ    Enterprise
    EditionSubManufacturer    REG_SZ
    EditionSubstring    REG_SZ
    EditionSubVersion    REG_SZ
    InstallationType    REG_SZ    Client
    ProductName    REG_SZ    Windows 10 Enterprise
    ReleaseId    REG_SZ    2009
    SoftwareType    REG_SZ    System
    PathName    REG_SZ    C:\Windows
    ProductId    REG_SZ    00329-00000-00003-AA153
    DisplayVersion    REG_SZ    22H2
    WinREVersion    REG_SZ    10.0.19041.3920

End of search: 22 match(es) found.

''',
        ),
      ]);
      final validator = WindowsVersionValidator(
        operatingSystemUtils: FakeValidOperatingSystemUtils(),
        processLister: ofdNotRunning(),
        versionExtractor: WindowsVersionExtractor(
          processManager: processManager,
          logger: BufferLogger.test(),
        ),
      );
      final ValidationResult result = await validator.validate();
      expect(result.type, ValidationType.success);
      expect(result.statusInfo, '10 Enterprise 64-bit, 22H2, 2009');
    },
  );

  testWithoutContext('Differentiates Windows 11 from 10 when wmic call fails', () async {
    const windows10RegQueryOutput = r'''
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion
    SystemRoot    REG_SZ    C:\WINDOWS
    BuildBranch    REG_SZ    ni_release
    BuildGUID    REG_SZ    ffffffff-ffff-ffff-ffff-ffffffffffff
    BuildLab    REG_SZ    22621.ni_release.220506-1250
    BuildLabEx    REG_SZ    22621.1.amd64fre.ni_release.220506-1250
    CompositionEditionID    REG_SZ    Enterprise
    CurrentBuild    REG_SZ    22631
    CurrentBuildNumber    REG_SZ    22631
    CurrentType    REG_SZ    Multiprocessor Free
    CurrentVersion    REG_SZ    6.3
    DisplayVersion    REG_SZ    23H2
    EditionID    REG_SZ    Professional
    EditionSubManufacturer    REG_SZ
    EditionSubstring    REG_SZ
    EditionSubVersion    REG_SZ
    InstallationType    REG_SZ    Client
    ProductName    REG_SZ    Windows 10 Pro
    ReleaseId    REG_SZ    2009
    SoftwareType    REG_SZ    System
    PathName    REG_SZ    C:\Windows
    ProductId    REG_SZ    00330-80832-91035-AA540

End of search: 21 match(es) found.

''';
    const wmicCommand = <String>['wmic', 'os', 'get', 'Caption,OSArchitecture'];
    final processManager = FakeProcessManager.list(<FakeCommand>[
      FakeCommand(
        command: wmicCommand,
        exception: ProcessException(wmicCommand[0], wmicCommand.sublist(1)),
      ),
      const FakeCommand(
        command: <Pattern>[
          'reg',
          'query',
          r'HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion',
          '/t',
          'REG_SZ',
        ],
        stdout: windows10RegQueryOutput,
      ),
    ]);

    final validator = WindowsVersionValidator(
      operatingSystemUtils: FakeValidOperatingSystemUtils(),
      processLister: ofdNotRunning(),
      versionExtractor: WindowsVersionExtractor(
        processManager: processManager,
        logger: BufferLogger.test(),
      ),
    );
    final ValidationResult result = await validator.validate();
    expect(result.type, ValidationType.success);
    expect(result.statusInfo, 'Windows 11 or higher, 23H2, 2009');
  });

  testWithoutContext('Handles reg call failing', () async {
    const wmicCommand = <String>['wmic', 'os', 'get', 'Caption,OSArchitecture'];
    const regCommand = <String>[
      'reg',
      'query',
      r'HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion',
      '/t',
      'REG_SZ',
    ];
    final processManager = FakeProcessManager.list(<FakeCommand>[
      const FakeCommand(
        command: wmicCommand,
        stdout: r'''
Caption                   OSArchitecture

Microsoft Windows 11 Pro  64-bit
''',
      ),
      FakeCommand(
        command: regCommand,
        exception: ProcessException(regCommand[0], regCommand.sublist(1)),
      ),
    ]);

    final validator = WindowsVersionValidator(
      operatingSystemUtils: FakeValidOperatingSystemUtils(),
      processLister: ofdNotRunning(),
      versionExtractor: WindowsVersionExtractor(
        processManager: processManager,
        logger: BufferLogger.test(),
      ),
    );
    final ValidationResult result = await validator.validate();
    expect(result.type, ValidationType.success);
    expect(result.statusInfo, 'Windows 11 or higher');
  });
}