webfeed/lib/domain/atom_item.dart

import 'package:webfeed/domain/atom_category.dart';
import 'package:webfeed/domain/atom_link.dart';
import 'package:webfeed/domain/atom_person.dart';
import 'package:webfeed/domain/atom_source.dart';
import 'package:webfeed/domain/media/media.dart';
import 'package:webfeed/util/helpers.dart';
import 'package:xml/xml.dart';

class AtomItem {
  final String id;
  final String title;
  final String updated;

  final List<AtomPerson> authors;
  final List<AtomLink> links;
  final List<AtomCategory> categories;
  final List<AtomPerson> contributors;
  final AtomSource source;
  final String published;
  final String content;
  final String summary;
  final String rights;
  final Media media;

  AtomItem({
    this.id,
    this.title,
    this.updated,
    this.authors,
    this.links,
    this.categories,
    this.contributors,
    this.source,
    this.published,
    this.content,
    this.summary,
    this.rights,
    this.media,
  });

  factory AtomItem.parse(XmlElement element) {
    var id = xmlGetString(element, "id", strict: false);
    var title = xmlGetString(element, "title", strict: false);
    var updated = xmlGetString(element, "updated", strict: false);

    var authors = element.findElements("author").map((element) {
      return new AtomPerson.parse(element);
    }).toList();

    var links = element.findElements("link").map((element) {
      return new AtomLink.parse(element);
    }).toList();

    var categories = element.findElements("category").map((element) {
      return new AtomCategory.parse(element);
    }).toList();

    var contributors = element.findElements("contributor").map((element) {
      return new AtomPerson.parse(element);
    }).toList();

    AtomSource source;
    try {
      source = new AtomSource.parse(element.findElements("source").first);
    } on StateError {}

    var published = xmlGetString(element, "published", strict: false);
    var content = xmlGetString(element, "content", strict: false);
    var summary = xmlGetString(element, "summary", strict: false);
    var rights = xmlGetString(element, "rights", strict: false);

    return new AtomItem(
      id: id,
      title: title,
      updated: updated,
      authors: authors,
      links: links,
      categories: categories,
      contributors: contributors,
      source: source,
      published: published,
      content: content,
      summary: summary,
      rights: rights,
      media: new Media.parse(element),
    );
  }

  @override
  String toString() {
    return '''
      id: $id
      title: $title
      updated: $updated
      authors: $authors
      links: $links
      categories: $categories
      contributors: $contributors
      source: $source
      published: $published
      content: $content
      summary: $summary
      rights: $rights
    ''';
  }
}