// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'dart:io';

import 'package:analyzer/src/lint/io.dart';
import 'package:analyzer/src/lint/linter.dart';
import 'package:linter/src/analyzer.dart';
import 'package:linter/src/cli.dart' as cli;
import 'package:linter/src/rules.dart';
import 'package:test/test.dart';
import 'package:yaml/yaml.dart';

import 'integration/always_require_non_null_named_parameters.dart'
    as always_require_non_null_named_parameters;
import 'integration/avoid_private_typedef_functions.dart'
    as avoid_private_typedef_functions;
import 'integration/avoid_relative_lib_imports.dart'
    as avoid_relative_lib_imports;
import 'integration/avoid_renaming_method_parameters.dart'
    as avoid_renaming_method_parameters;
import 'integration/avoid_web_libraries_in_flutter.dart'
    as avoid_web_libraries_in_flutter;
import 'integration/cancel_subscriptions.dart' as cancel_subscriptions;
import 'integration/close_sinks.dart' as close_sinks;
import 'integration/directives_ordering.dart' as directives_ordering;
import 'integration/exhaustive_cases.dart' as exhaustive_cases;
import 'integration/file_names.dart' as file_names;
import 'integration/flutter_style_todos.dart' as flutter_style_todos;
import 'integration/lines_longer_than_80_chars.dart'
    as lines_longer_than_80_chars;
import 'integration/only_throw_errors.dart' as only_throw_errors;
import 'integration/overridden_fields.dart' as overridden_fields;
import 'integration/packages_file_test.dart' as packages_file_test;
import 'integration/prefer_asserts_in_initializer_lists.dart'
    as prefer_asserts_in_initializer_lists;
import 'integration/prefer_const_constructors_in_immutables.dart'
    as prefer_const_constructors_in_immutables;
import 'integration/prefer_relative_imports.dart' as prefer_relative_imports;
import 'integration/public_member_api_docs.dart' as public_member_api_docs;
import 'integration/sort_pub_dependencies.dart' as sort_pub_dependencies;
import 'integration/unnecessary_lambdas.dart' as unnecessary_lambdas;
import 'integration/unnecessary_string_escapes.dart'
    as unnecessary_string_escapes;
import 'mocks.dart';
import 'rules/experiments/experiments.dart';

void main() {
  group('integration', () {
    ruleTests();
    coreTests();
  });
}

void coreTests() {
  group('core', () {
    group('config', () {
      final currentOut = outSink;
      final collectingOut = CollectingSink();
      setUp(() {
        exitCode = 0;
        outSink = collectingOut;
      });
      tearDown(() {
        collectingOut.buffer.clear();
        outSink = currentOut;
        exitCode = 0;
      });
      test('excludes', () async {
        await cli.run(['test/_data/p2', '-c', 'test/_data/p2/lintconfig.yaml']);
        expect(
            collectingOut.trim(),
            stringContainsInOrder(
                ['4 files analyzed, 1 issue found (2 filtered), in']));
        expect(exitCode, 1);
      });
      test('overrides', () async {
        await cli
            .run(['test/_data/p2', '-c', 'test/_data/p2/lintconfig2.yaml']);
        expect(collectingOut.trim(),
            stringContainsInOrder(['4 files analyzed, 0 issues found, in']));
        expect(exitCode, 0);
      });
      test('default', () async {
        await cli.run(['test/_data/p2']);
        expect(collectingOut.trim(),
            stringContainsInOrder(['4 files analyzed, 3 issues found, in']));
        expect(exitCode, 1);
      });
    });

    group('pubspec', () {
      final currentOut = outSink;
      final collectingOut = CollectingSink();
      setUp(() => outSink = collectingOut);
      tearDown(() {
        collectingOut.buffer.clear();
        outSink = currentOut;
      });
      test('bad pubspec', () async {
        await cli.run(['test/_data/p3', 'test/_data/p3/_pubpspec.yaml']);
        expect(collectingOut.trim(),
            startsWith('1 file analyzed, 0 issues found, in'));
      });
    });

    group('canonicalization', () {
      final currentOut = outSink;
      final collectingOut = CollectingSink();
      setUp(() => outSink = collectingOut);
      tearDown(() {
        collectingOut.buffer.clear();
        outSink = currentOut;
      });
      test('no warnings due to bad canonicalization', () async {
        var packagesFilePath = File('test/_data/p4/_packages').absolute.path;
        await cli.runLinter(['--packages', packagesFilePath, 'test/_data/p4'],
            LinterOptions([]));
        expect(collectingOut.trim(),
            startsWith('3 files analyzed, 0 issues found, in'));
      });
    });

    group('examples', () {
      test('all.yaml', () {
        final src = readFile('example/all.yaml');

        final options = _getOptionsFromString(src);
        var configuredLints =
            (options['linter'] as YamlMap)['rules'] as YamlList;

        // rules are sorted
        expect(
            configuredLints, orderedEquals(configuredLints.toList()..sort()));

        registerLintRules();
        expect(
            configuredLints,
            unorderedEquals(Analyzer.facade.registeredRules
                .where((r) =>
                    r.maturity != Maturity.deprecated &&
                    !experiments.contains(r))
                .map((r) => r.name)));
      });
    });
  });
}

void ruleTests() {
  group('rule', () {
    unnecessary_lambdas.main();
    exhaustive_cases.main();
    avoid_web_libraries_in_flutter.main();
    packages_file_test.main();
    overridden_fields.main();
    close_sinks.main();
    cancel_subscriptions.main();
    directives_ordering.main();
    file_names.main();
    flutter_style_todos.main();
    lines_longer_than_80_chars.main();
    only_throw_errors.main();
    always_require_non_null_named_parameters.main();
    prefer_asserts_in_initializer_lists.main();
    prefer_const_constructors_in_immutables.main();
    avoid_relative_lib_imports.main();
    prefer_relative_imports.main();
    public_member_api_docs.main();
    avoid_renaming_method_parameters.main();
    avoid_private_typedef_functions.main();
    sort_pub_dependencies.main();
    unnecessary_string_escapes.main();
  });
}

/// Provide the options found in [optionsSource].
Map<String, YamlNode> _getOptionsFromString(String optionsSource) {
  final options = <String, YamlNode>{};
  if (optionsSource == null) {
    return options;
  }

  final doc = loadYamlNode(optionsSource);

  // Empty options.
  if (doc is YamlScalar && doc.value == null) {
    return options;
  }
  if ((doc != null) && (doc is! YamlMap)) {
    throw Exception(
        'Bad options file format (expected map, got ${doc.runtimeType})');
  }
  if (doc is YamlMap) {
    doc.nodes.forEach((k, YamlNode v) {
      Object key;
      if (k is YamlScalar) {
        key = k.value;
      }
      if (key is! String) {
        throw Exception('Bad options file format (expected String scope key, '
            'got ${k.runtimeType})');
      }
      if (v != null && v is! YamlNode) {
        throw Exception('Bad options file format (expected Node value, '
            'got ${v.runtimeType}: `${v.toString()}`)');
      }
      options[key as String] = v;
    });
  }
  return options;
}