// Copyright (c) 2016, 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:path/path.dart' as p;
import 'package:test/test.dart';

import 'package:package_resolver/package_resolver.dart';

void main() {
  var resolver;
  setUp(() {
    resolver = SyncPackageResolver.root('file:///foo/bar');
  });

  group('constructor', () {
    test('with a URI object', () {
      var resolver = SyncPackageResolver.root(Uri.parse('file:///foo/bar/'));
      expect(resolver.packageRoot, equals(Uri.parse('file:///foo/bar/')));
    });

    test('with a URI without a path component', () {
      var resolver =
          SyncPackageResolver.root(Uri.parse('http://localhost:1234'));
      expect(resolver.packageRoot, equals(Uri.parse('http://localhost:1234/')));
    });

    test('with an invalid URI type', () {
      expect(() => SyncPackageResolver.root(12), throwsArgumentError);
    });
  });

  test('exposes a null config map', () {
    expect(resolver.packageConfigMap, isNull);
  });

  test('exposes a null config URI', () {
    expect(resolver.packageConfigUri, isNull);
  });

  test('exposes the root root', () {
    expect(resolver.packageRoot, equals(Uri.parse('file:///foo/bar/')));
  });

  test('processArgument uses --package-root', () {
    expect(resolver.processArgument, equals('--package-root=file:///foo/bar/'));
  });

  group('resolveUri', () {
    test('with a package', () {
      expect(resolver.resolveUri('package:baz/bang/qux.dart'),
          equals(Uri.parse('file:///foo/bar/baz/bang/qux.dart')));
    });

    test('with a package with no path', () {
      expect(resolver.resolveUri('package:baz'), isNull);
    });

    test('with a package with an empty path', () {
      expect(resolver.resolveUri('package:baz/'),
          equals(Uri.parse('file:///foo/bar/baz/')));
    });

    test('with a URI object', () {
      expect(resolver.resolveUri(Uri.parse('package:baz/bang/qux.dart')),
          equals(Uri.parse('file:///foo/bar/baz/bang/qux.dart')));
    });

    test('with an invalid argument type', () {
      expect(() => resolver.resolveUri(12), throwsArgumentError);
    });

    test('with a non-package URI', () {
      expect(
          () => resolver.resolveUri('file:///zip/zap'), throwsFormatException);
    });

    test('with an invalid package URI', () {
      expect(() => resolver.resolveUri('package:'), throwsFormatException);
    });
  });

  group('urlFor', () {
    test('with no path', () {
      expect(resolver.urlFor('baz'), equals(Uri.parse('file:///foo/bar/baz/')));
    });

    test('with a path', () {
      expect(resolver.urlFor('baz', 'bang/qux.dart'),
          equals(Uri.parse('file:///foo/bar/baz/bang/qux.dart')));
    });
  });

  group('packageUriFor', () {
    test('converts a matching URI to a package:', () {
      expect(resolver.packageUriFor('file:///foo/bar/bang/qux.dart'),
          equals(Uri.parse('package:bang/qux.dart')));
    });

    test('converts a matching URI with no path', () {
      expect(resolver.packageUriFor('file:///foo/bar/baz'),
          equals(Uri.parse('package:baz/')));
      expect(resolver.packageUriFor('file:///foo/bar/baz/'),
          equals(Uri.parse('package:baz/')));
    });

    test('with a URI object', () {
      expect(resolver.packageUriFor(Uri.parse('file:///foo/bar/bang/qux.dart')),
          equals(Uri.parse('package:bang/qux.dart')));
    });

    test('with an invalid argument type', () {
      expect(() => resolver.packageUriFor(12), throwsArgumentError);
    });
  });

  group('packagePath', () {
    var sandbox;
    setUp(() async {
      sandbox =
          (await Directory.systemTemp.createTemp('package_resolver_test')).path;
    });

    tearDown(() async {
      await Directory(sandbox).delete(recursive: true);
    });

    test('with a file: scheme', () async {
      var packageLib = p.join(sandbox, 'foo/lib');
      await Directory(packageLib).create(recursive: true);

      var packagesDir = p.join(sandbox, 'packages');
      var fooLink = p.join(packagesDir, 'foo');
      await Link(fooLink).create(packageLib, recursive: true);

      var packagesLink = p.join(sandbox, 'foo/packages');
      await Link(packagesLink).create(packagesDir);

      var resolver = SyncPackageResolver.root(p.toUri(packagesLink));

      expect(resolver.packagePath('foo'),
          equals(Directory(p.join(sandbox, 'foo')).resolveSymbolicLinksSync()));
      expect(resolver.packagePath('bar'), isNull);
    });

    test('without a file: scheme', () {
      var resolver = SyncPackageResolver.root('http://dartlang.org/bar');
      expect(resolver.packagePath('foo'), isNull);
    });
  }, testOn: 'vm');
}