// Copyright 2013 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/file.dart';
import 'package:flutter_plugin_tools/src/common/plugin_utils.dart';
import 'package:platform/platform.dart';

import 'common/core.dart';
import 'common/gradle.dart';
import 'common/package_looping_command.dart';
import 'common/process_runner.dart';
import 'common/repository_package.dart';

/// Run 'gradlew lint'.
///
/// See https://developer.android.com/studio/write/lint.
class LintAndroidCommand extends PackageLoopingCommand {
  /// Creates an instance of the linter command.
  LintAndroidCommand(
    Directory packagesDir, {
    ProcessRunner processRunner = const ProcessRunner(),
    Platform platform = const LocalPlatform(),
  }) : super(packagesDir, processRunner: processRunner, platform: platform);

  @override
  final String name = 'lint-android';

  @override
  final String description = 'Runs "gradlew lint" on Android plugins.\n\n'
      'Requires the example to have been build at least once before running.';

  @override
  Future<PackageResult> runForPackage(RepositoryPackage package) async {
    if (!pluginSupportsPlatform(kPlatformAndroid, package,
        requiredMode: PlatformSupport.inline)) {
      return PackageResult.skip(
          'Plugin does not have an Android implemenatation.');
    }

    final RepositoryPackage example = package.getSingleExampleDeprecated();
    final GradleProject project = GradleProject(example.directory,
        processRunner: processRunner, platform: platform);

    if (!project.isConfigured()) {
      return PackageResult.fail(<String>['Build example before linting']);
    }

    final String packageName = package.directory.basename;

    // Only lint one build mode to avoid extra work.
    // Only lint the plugin project itself, to avoid failing due to errors in
    // dependencies.
    //
    // TODO(stuartmorgan): Consider adding an XML parser to read and summarize
    // all results. Currently, only the first three errors will be shown inline,
    // and the rest have to be checked via the CI-uploaded artifact.
    final int exitCode = await project.runCommand('$packageName:lintDebug');

    return exitCode == 0 ? PackageResult.success() : PackageResult.fail();
  }
}