// Copyright 2017 Google Inc.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

import 'dart:convert';

import 'package:ngflutter/src/exceptions.dart';
import 'package:ngflutter/src/file_reader.dart';
import 'package:ngflutter/src/package_uri_resolver.dart';
import 'package:path/path.dart' as path;
import 'package:test/test.dart';

void main() {
  group('PackageUriResolver', () {
    FileReader.reader = new FileReaderMock();

    PackageUriResolver resolver;

    setUp(() {
      resolver = new PackageUriResolver('.packages');
    });

    test('should parse dependent package URI', () {
      var filePath = resolver.resolve('package:some_package/some_file.dart');
      expect(
          filePath,
          equals(path.join(
              path.separator,
              path.join(
                  'home',
                  'someone',
                  '.pub-cache',
                  'hosted',
                  'pub.dartlang.org',
                  'some_package-1.0.0',
                  'lib',
                  'some_file.dart'))));
    });

    test('should parse current project URI', () {
      var filePath = resolver.resolve('package:ngflutter/some_file.dart');
      expect(filePath, equals(path.join('lib', 'some_file.dart')));
    });

    test('should throw for unknow package', () {
      expect(() => resolver.resolve('package:unknown/some_file.dart'),
          throwsA(const TypeMatcher<UsageException>()));
    });
  });
}

class FileReaderMock implements FileReader {
  static const List<String> _dotPackages = const [
    '# Generated by pub on 2017-05-01 00:00:00.00001.',
    'some_package:file:///home/someone/.pub-cache/hosted/'
        'pub.dartlang.org/some_package-1.0.0/lib/',
    'ngflutter:lib/'
  ];

  @override
  List<String> readAsLines(Object uri, {Encoding encoding = utf8}) {
    if (uri is String && uri == '.packages') return _dotPackages;
    return null;
  }

  @override
  String readAsString(Object uri, {Encoding encoding = utf8}) => null;
}