pkgs/flutter_http_example/lib/book.dart

// Copyright (c) 2022, 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.

class Book {
  String title;
  String description;
  Uri imageUrl;

  Book(this.title, this.description, this.imageUrl);

  static List<Book> listFromJson(Map<dynamic, dynamic> json) {
    final books = <Book>[];

    if (json['items'] case final List<dynamic> items) {
      for (final item in items) {
        if (item case {'volumeInfo': final Map<dynamic, dynamic> volumeInfo}) {
          if (volumeInfo
              case {
                'title': final String title,
                'description': final String description,
                'imageLinks': {'smallThumbnail': final String thumbnail}
              }) {
            books.add(Book(title, description, Uri.parse(thumbnail)));
          }
        }
      }
    }

    return books;
  }
}