| // Copyright 2019 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 'dart:async'; |
| import 'dart:io' show ContentType, HttpResponse; |
| import 'dart:typed_data'; |
| |
| import 'package:cocoon_service/cocoon_service.dart'; |
| import 'package:file/file.dart'; |
| import 'package:file/local.dart'; |
| import 'package:meta/meta.dart'; |
| import 'package:mime/mime.dart'; |
| import 'package:path/path.dart' as path; |
| |
| import 'exceptions.dart'; |
| |
| /// A class based on [RequestHandler] for serving static files. |
| @immutable |
| class StaticFileHandler extends RequestHandler<Body> { |
| /// Creates a new [StaticFileHandler]. |
| const StaticFileHandler(this.filePath, |
| {@required Config config, this.fs = const LocalFileSystem()}) |
| : super(config: config); |
| |
| /// The current [FileSystem] to retrieve files from. |
| final FileSystem fs; |
| |
| /// The location of the static file to serve to the client. |
| final String filePath; |
| |
| /// Services an HTTP GET Request for static files. |
| @override |
| Future<Body> get() async { |
| final HttpResponse response = request.response; |
| |
| /// The map of mimeTypes not found in [mime] package. |
| final Map<String, String> mimeTypeMap = <String, String>{ |
| '.map': 'application/json', |
| }; |
| |
| final String resultPath = filePath == '/' ? '/index.html' : filePath; |
| |
| /// The file path in app_dart to the files to serve |
| const String basePath = 'build/web'; |
| final File file = fs.file('$basePath$resultPath'); |
| if (file.existsSync()) { |
| final String mimeType = |
| lookupMimeType(resultPath) ?? mimeTypeMap[path.extension(file.path)]; |
| response.headers.contentType = ContentType.parse(mimeType); |
| return Body.forStream(file.openRead().cast<Uint8List>()); |
| } else { |
| throw NotFoundException(resultPath); |
| } |
| } |
| } |
