// 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 examples to have been build at least once before running.';

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

    bool failed = false;
    for (final RepositoryPackage example in package.getExamples()) {
      final GradleProject project = GradleProject(example,
          processRunner: processRunner, platform: platform);

      if (!project.isConfigured()) {
        return PackageResult.fail(<String>['Build examples 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');
      if (exitCode != 0) {
        failed = true;
      }
    }

    return failed ? PackageResult.fail() : PackageResult.success();
  }
}