web feed intermediate

2025-02-28 14:31:07 +01:00
parent 3c4d479bd9
commit 2a2311253b
51 changed files with 5503 additions and 0 deletions
@@ -0,0 +1,57 @@
+import 'package:collection/collection.dart';
+import 'package:lensai/extensions/nullable.dart';
+import 'package:lensai/features/web_feed/data/models/feed_author.dart';
+import 'package:lensai/features/web_feed/data/models/feed_category.dart';
+import 'package:lensai/features/web_feed/data/models/feed_link.dart';
+import 'package:rss_dart/dart_rss.dart';
+
+extension ParseAtomLink on List<AtomLink> {
+  List<FeedLink> toFeedLinks() {
+    return map((link) {
+      final uri = link.href.mapNotNull(Uri.tryParse);
+      if (uri == null) {
+        return null;
+      }
+
+      final relation = link.rel.mapNotNull(
+        (rel) => FeedLinkRelation.values.firstWhereOrNull((e) => e.name == rel),
+      );
+
+      return FeedLink(
+        uri: uri,
+        relation: relation,
+        title: link.title.whenNotEmpty,
+      );
+    }).nonNulls.toList();
+  }
+}
+
+extension ParseAtomCategory on List<AtomCategory> {
+  List<FeedCategory> toFeedCategories() {
+    return where((category) => category.term.isNotEmpty)
+        .map(
+          (category) => FeedCategory(
+            id: category.term!,
+            title: category.label.whenNotEmpty,
+          ),
+        )
+        .toList();
+  }
+}
+
+extension ParseAtomPerson on List<AtomPerson> {
+  List<FeedAuthor> toFeedAuthors() {
+    return where(
+          (author) =>
+              author.name.whenNotEmpty != null ||
+              author.email.whenNotEmpty != null,
+        )
+        .map(
+          (author) => FeedAuthor(
+            name: author.name.whenNotEmpty,
+            email: author.email.whenNotEmpty,
+          ),
+        )
+        .toList();
+  }
+}
@@ -0,0 +1,17 @@
+import 'package:collection/collection.dart';
+import 'package:lensai/extensions/nullable.dart';
+import 'package:lensai/features/web_feed/data/models/feed_article.dart';
+import 'package:lensai/features/web_feed/data/models/feed_link.dart';
+
+extension FeedArticleX on FeedArticle {
+  String get displayTitle =>
+      title ??
+      links
+          ?.firstWhereOrNull(
+            (link) => link.relation == FeedLinkRelation.alternate,
+          )
+          .mapNotNull(
+            (link) => link.title.whenNotEmpty ?? link.uri.toString(),
+          ) ??
+      'Unnamed Article';
+}
@@ -0,0 +1,24 @@
+import 'package:lensai/extensions/nullable.dart';
+import 'package:lensai/features/web_feed/data/models/feed_category.dart';
+import 'package:rss_dart/dart_rss.dart';
+import 'package:rss_dart/domain/dublin_core/dublin_core.dart';
+
+extension ParseDublinCategory on DublinCore {
+  List<FeedCategory> toFeedCategories() {
+    return subjects
+        .where((subject) => subject.isNotEmpty)
+        .map((subject) => FeedCategory(id: subject))
+        .toList();
+  }
+}
+
+extension ParseRssCategory on List<RssCategory> {
+  List<FeedCategory> toFeedCategories() {
+    return where((category) => category.value.isNotEmpty)
+        .map(
+          (category) =>
+              FeedCategory(id: '${category.domain} ${category.value}'.trim()),
+        )
+        .toList();
+  }
+}
@@ -0,0 +1,50 @@
+import 'package:rss_dart/dart_rss.dart';
+
+extension WebFeedJson on WebFeed {
+  Map<String, dynamic> toJson() {
+    return {
+      'title': title,
+      'description': description,
+      'links': links.where((link) => link != null).toList(),
+      'items': items.map((item) => item.toJson()).toList(),
+    };
+  }
+
+  static WebFeed fromJson(Map<String, dynamic> json) {
+    return WebFeed(
+      title: json['title'] as String,
+      description: json['description'] as String,
+      links: (json['links'] as List).cast<String?>(),
+      items:
+          (json['items'] as List)
+              .map(
+                (item) =>
+                    WebFeedItemJson.fromJson(item as Map<String, dynamic>),
+              )
+              .toList(),
+    );
+  }
+}
+
+extension WebFeedItemJson on WebFeedItem {
+  Map<String, dynamic> toJson() {
+    return {
+      'title': title,
+      'body': body,
+      'links': links.where((link) => link != null).toList(),
+      'updated': updated?.toIso8601String(),
+    };
+  }
+
+  static WebFeedItem fromJson(Map<String, dynamic> json) {
+    return WebFeedItem(
+      title: json['title'] as String,
+      body: json['body'] as String,
+      links: (json['links'] as List).cast<String?>(),
+      updated:
+          json['updated'] != null
+              ? DateTime.parse(json['updated'] as String)
+              : null,
+    );
+  }
+}