// 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:flutter_tools/src/base/logger.dart';
import 'package:flutter_tools/src/base/platform.dart';
import 'package:flutter_tools/src/cache.dart';
import 'package:flutter_tools/src/commands/precache.dart';
import 'package:test/fake.dart';

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

void main() {
  FakeCache cache;

  setUp(() {
    cache = FakeCache();
    cache.isUpToDateValue = false;
  });

  testUsingContext('precache should acquire lock', () async {
    final Platform platform = FakePlatform(environment: <String, String>{});
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      platform: platform,
      featureFlags: TestFeatureFlags(),
    );
    await createTestCommandRunner(command).run(const <String>['precache']);

    expect(cache.locked, true);
  });

  testUsingContext('precache should not re-entrantly acquire lock', () async {
    final Platform platform = FakePlatform(
      operatingSystem: 'windows',
      environment: <String, String>{
        'FLUTTER_ROOT': 'flutter',
        'FLUTTER_ALREADY_LOCKED': 'true',
      },
    );
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: platform,
    );
    await createTestCommandRunner(command).run(const <String>['precache']);

    expect(cache.locked, false);
  });

  testUsingContext('precache downloads web artifacts on dev branch when feature is enabled.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(isWebEnabled: true),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache', '--web', '--no-android', '--no-ios']);

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.web,
    }));
  });

  testUsingContext('precache does not download web artifacts on dev branch when feature is enabled.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache', '--web', '--no-android', '--no-ios']);

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
    }));
  });

  testUsingContext('precache downloads macOS artifacts on dev branch when macOS is enabled.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(isMacOSEnabled: true),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache', '--macos', '--no-android', '--no-ios']);

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.macOS,
    }));
  });

  testUsingContext('precache does not download macOS artifacts on dev branch when feature is enabled.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache', '--macos', '--no-android', '--no-ios']);

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
    }));
  });

  testUsingContext('precache downloads Windows artifacts on dev branch when feature is enabled.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(isWindowsEnabled: true),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache', '--windows', '--no-android', '--no-ios']);

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.windows,
    }));
  });

  testUsingContext('precache does not download Windows artifacts on dev branch when feature is enabled.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache', '--windows', '--no-android', '--no-ios']);

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
    }));
  });

  testUsingContext('precache downloads Linux artifacts on dev branch when feature is enabled.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(isLinuxEnabled: true),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache', '--linux', '--no-android', '--no-ios']);

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.linux,
    }));
  });

  testUsingContext('precache does not download Linux artifacts on dev branch when feature is enabled.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache', '--linux', '--no-android', '--no-ios']);

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
    }));
  });

  testUsingContext('precache exits if requesting mismatched artifacts.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: FakePlatform(environment: <String, String>{}),
    );

    expect(createTestCommandRunner(command).run(const <String>['precache',
      '--no-android',
      '--android_gen_snapshot',
    ]), throwsToolExit(message: '--android_gen_snapshot requires --android'));
  });

  testUsingContext('precache adds artifact flags to requested artifacts', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(
        isWebEnabled: true,
        isLinuxEnabled: true,
        isMacOSEnabled: true,
        isWindowsEnabled: true,
        isFuchsiaEnabled: true,
      ),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(
      const <String>[
        'precache',
        '--ios',
        '--android',
        '--web',
        '--macos',
        '--linux',
        '--windows',
        '--fuchsia',
        '--flutter_runner',
      ],
    );
    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.iOS,
      DevelopmentArtifact.androidGenSnapshot,
      DevelopmentArtifact.androidMaven,
      DevelopmentArtifact.androidInternalBuild,
      DevelopmentArtifact.web,
      DevelopmentArtifact.macOS,
      DevelopmentArtifact.linux,
      DevelopmentArtifact.windows,
      DevelopmentArtifact.fuchsia,
      DevelopmentArtifact.flutterRunner,
    }));
  });

  testUsingContext('precache expands android artifacts when the android flag is used', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(
      const <String>[
        'precache',
        '--no-ios',
        '--android',
      ],
    );
    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.androidGenSnapshot,
      DevelopmentArtifact.androidMaven,
      DevelopmentArtifact.androidInternalBuild,
    }));
  });

  testUsingContext('precache adds artifact flags to requested android artifacts', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(
      const <String>[
        'precache',
        '--no-ios',
        '--android',
        '--android_gen_snapshot',
        '--android_maven',
        '--android_internal_build',
      ],
    );
    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.androidGenSnapshot,
      DevelopmentArtifact.androidMaven,
      DevelopmentArtifact.androidInternalBuild,
    }));
  });

  testUsingContext('precache downloads iOS and Android artifacts by default', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: FakePlatform(environment: <String, String>{}),
    );

    await createTestCommandRunner(command).run(
      const <String>[
        'precache',
      ],
    );

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.iOS,
      DevelopmentArtifact.androidGenSnapshot,
      DevelopmentArtifact.androidMaven,
      DevelopmentArtifact.androidInternalBuild,
    }));
  });

  testUsingContext('precache --all-platforms gets all artifacts', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(
        isWebEnabled: true,
        isLinuxEnabled: true,
        isMacOSEnabled: true,
        isWindowsEnabled: true,
        isFuchsiaEnabled: true,
      ),
      platform: FakePlatform(environment: <String, String>{}),
    );

    await createTestCommandRunner(command).run(
      const <String>[
        'precache',
        '--all-platforms',
      ],
    );

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.iOS,
      DevelopmentArtifact.androidGenSnapshot,
      DevelopmentArtifact.androidMaven,
      DevelopmentArtifact.androidInternalBuild,
      DevelopmentArtifact.web,
      DevelopmentArtifact.macOS,
      DevelopmentArtifact.linux,
      DevelopmentArtifact.windows,
      DevelopmentArtifact.fuchsia,
      DevelopmentArtifact.flutterRunner,
    }));
  });

  testUsingContext('precache with default artifacts does not override platform filtering', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(),
      platform: FakePlatform(environment: <String, String>{}),
    );

    await createTestCommandRunner(command).run(
      const <String>[
        'precache',
      ],
    );

    expect(cache.platformOverrideArtifacts, <String>{});
  });

  testUsingContext('precache with explicit artifact options overrides platform filtering', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
        featureFlags: TestFeatureFlags(
        isMacOSEnabled: true,
      ),
      platform: FakePlatform(
        operatingSystem: 'windows',
        environment: <String, String>{
          'FLUTTER_ROOT': 'flutter',
          'FLUTTER_ALREADY_LOCKED': 'true',
        },
      ),
    );

    await createTestCommandRunner(command).run(
      const <String>[
        'precache',
        '--no-ios',
        '--no-android',
        '--macos',
      ],
    );

    expect(cache.artifacts, unorderedEquals(<DevelopmentArtifact>{
      DevelopmentArtifact.universal,
      DevelopmentArtifact.macOS,
    }));
    expect(cache.platformOverrideArtifacts, <String>{'macos'});
  });

  testUsingContext('precache deletes artifact stampfiles when --force is provided', () async {
    cache.isUpToDateValue = true;
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(
        isMacOSEnabled: true,
      ),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache', '--force']);

    expect(cache.clearedStampFiles, true);
  });

  testUsingContext('precache downloads all enabled platforms if no flags are provided.', () async {
    final PrecacheCommand command = PrecacheCommand(
      cache: cache,
      logger: BufferLogger.test(),
      featureFlags: TestFeatureFlags(
        isWebEnabled: true,
        isLinuxEnabled: true,
        isWindowsEnabled: true,
        isMacOSEnabled: true,
        isIOSEnabled: false,
        isAndroidEnabled: false,
      ),
      platform: FakePlatform(environment: <String, String>{}),
    );
    await createTestCommandRunner(command).run(const <String>['precache']);

    expect(
      cache.artifacts,
      unorderedEquals(<DevelopmentArtifact>{
        DevelopmentArtifact.web,
        DevelopmentArtifact.macOS,
        DevelopmentArtifact.windows,
        DevelopmentArtifact.linux,
        DevelopmentArtifact.universal,
        // iOS and android specifically excluded
      }));
  });
}

class FakeCache extends Fake implements Cache {
  bool isUpToDateValue = false;
  bool clearedStampFiles = false;
  bool locked = false;
  Set<DevelopmentArtifact> artifacts;

  @override
  Future<void> lock() async {
    locked = true;
  }

  @override
  void releaseLock() {
    locked = false;
  }

  @override
  Future<bool> isUpToDate() async => isUpToDateValue;

  @override
  Future<void> updateAll(Set<DevelopmentArtifact> requiredArtifacts) async {
    artifacts = requiredArtifacts;
  }

  @override
  void clearStampFiles() {
    clearedStampFiles = true;
  }

  @override
  Set<String> platformOverrideArtifacts;

  @override
  bool includeAllPlatforms = false;
}