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// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'dart:async';

import 'package:file/file.dart';
import 'package:flutter_tools/src/base/file_system.dart';
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import 'package:flutter_tools/src/globals.dart' as globals;
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import '../test_utils.dart';

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const String _kDefaultHtml  = '''
<html>
    <head>
        <title>Hello, World</title>
    </head>
    <body>
        <script src="main.dart.js"></script>
    </body>
</html>
''';

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abstract class Project {
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  Directory dir;

  String get pubspec;
  String get main;
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  String get test => null;
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  Uri get mainDart => Uri.parse('package:test/main.dart');
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  Future<void> setUpIn(Directory dir) async {
    this.dir = dir;
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    writeFile(globals.fs.path.join(dir.path, 'pubspec.yaml'), pubspec);
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    if (main != null) {
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      writeFile(globals.fs.path.join(dir.path, 'lib', 'main.dart'), main);
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    }
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    if (test != null) {
      writeFile(globals.fs.path.join(dir.path, 'test', 'test.dart'), test);
    }
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    writeFile(globals.fs.path.join(dir.path, 'web', 'index.html'), _kDefaultHtml);
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    writePackages(dir.path);
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    await getPackages(dir.path);
  }

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  int lineContaining(String contents, String search) {
    final int index = contents.split('\n').indexWhere((String l) => l.contains(search));
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    if (index == -1) {
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      throw Exception("Did not find '$search' inside the file");
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    }
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    return index + 1; // first line is line 1, not line 0
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  }
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}