majro update

app/lib/utils/feed_finder.dart

@@ -1,96 +0,0 @@
-import 'package:html/dom.dart';
-import 'package:http/http.dart' as http;
-
-class FeedFinder {
-  final Uri url;
-  final Document document;
-
-  late final String _base;
-
-  FeedFinder({required this.url, required this.document}) {
-    final uri = url.removeFragment();
-    _base = '${uri.scheme}://${uri.authority}';
-  }
-
-  Future<Set<String>> _verifyCandidates(Set<String> candidates) async {
-    final results = <String>{};
-
-    final client = http.Client();
-    try {
-      for (final candidate in candidates) {
-        try {
-          await client.get(Uri.parse(candidate));
-        } catch (e) {
-          continue;
-        }
-
-        results.add(candidate);
-      }
-    } finally {
-      client.close();
-    }
-
-    return results;
-  }
-
-  void _parseBody(Set<String> candidates) {
-    for (final a in document.querySelectorAll('a')) {
-      var href = a.attributes['href'];
-      if (href != null) {
-        if (href.contains('rss') ||
-            href.contains('xml') ||
-            href.contains('feed')) {
-          // Fix relative URLs
-          href = href.startsWith('/') ? _base + href : href;
-          href = href.endsWith('/') ? href.substring(0, href.length - 2) : href;
-
-          // Fix naked URLs
-          href = !href.startsWith('http') ? '$_base/$href' : href;
-
-          candidates.add(href);
-        }
-      }
-    }
-  }
-
-  void _parseHead(Set<String> candidates) {
-    for (final link in document.querySelectorAll("link[rel='alternate']")) {
-      final type = link.attributes['type'];
-      if (type != null) {
-        if (type.contains('rss') || type.contains('xml')) {
-          var href = link.attributes['href'];
-          if (href != null) {
-            // Fix relative URLs
-            href = href.startsWith('/') ? _base + href : href;
-            candidates.add(href);
-          }
-        }
-      }
-    }
-  }
-
-  Future<Set<String>> parse({
-    bool parseHead = true,
-    bool parseBody = true,
-    bool verifyCandidates = true,
-  }) async {
-    final candidates = <String>{};
-
-    // Look for feed candidates in head
-    if (parseHead) {
-      _parseHead(candidates);
-    }
-
-    // Look for feed candidates in body
-    if (parseBody) {
-      _parseBody(candidates);
-    }
-
-    // Verify candidates
-    if (verifyCandidates) {
-      return _verifyCandidates(candidates);
-    }
-
-    return candidates;
-  }
-}

app/lib/utils/markdown/image_extractor.dart

@@ -0,0 +1,32 @@
+import 'package:lensai/extensions/nullable.dart';
+import 'package:markdown/markdown.dart';
+import 'package:path/path.dart' as p;
+
+List<Uri> extractImagesFromMarkdown(String markdownText) {
+  final imageUrls = <Uri>[];
+
+  final nodes = Document().parse(markdownText);
+
+  void findImages(List<Node> nodes) {
+    for (final node in nodes) {
+      if (node is Element && node.tag == 'img') {
+        final url = node.attributes['src'];
+
+        if (url.mapNotNull((url) => Uri.tryParse(url)) case final Uri url) {
+          if (p.extension(url.path)
+              case '.png' || '.jpg' || '.jpeg' || '.webp') {
+            imageUrls.add(url);
+          }
+        }
+      }
+
+      if (node is Element && node.children != null) {
+        findImages(node.children!);
+      }
+    }
+  }
+
+  findImages(nodes);
+
+  return imageUrls;
+}

app/lib/utils/ui_helper.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:lensai/extensions/nullable.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 void showErrorMessage(BuildContext context, String message) {
@@ -9,6 +10,60 @@ void showErrorMessage(BuildContext context, String message) {
     ),
     backgroundColor: Theme.of(context).colorScheme.onError,
   );
+
+  ScaffoldMessenger.of(context).showSnackBar(snackBar);
+}
+
+void showTabBackButtonMessage(BuildContext context, int tabCount) {
+  final snackbar = SnackBar(
+    content:
+        (tabCount > 1)
+            ? const Text('Please click BACK again to close current tab')
+            : const Text('Please click BACK again to exit app'),
+  );
+
+  ScaffoldMessenger.of(context)
+    ..clearSnackBars()
+    ..showSnackBar(snackbar);
+}
+
+void showTabOpenedMessage(
+  BuildContext context, {
+  String? tabName,
+  void Function()? onShow,
+}) {
+  final message = switch (tabName.whenNotEmpty) {
+    String() => "New tab '$tabName' opened in background",
+    null => 'New tab opened in background',
+  };
+
+  final snackBar = SnackBar(
+    content: Text(message),
+    action: onShow.mapNotNull(
+      (onPressed) => SnackBarAction(label: 'Show', onPressed: onPressed),
+    ),
+  );
+
+  ScaffoldMessenger.of(context).showSnackBar(snackBar);
+}
+
+void showTabSwitchMessage(
+  BuildContext context, {
+  String? tabName,
+  void Function()? onSwitch,
+}) {
+  final message = switch (tabName.whenNotEmpty) {
+    String() => "New tab '$tabName' opened",
+    null => 'New tab opened',
+  };
+
+  final snackBar = SnackBar(
+    content: Text(message),
+    action: onSwitch.mapNotNull(
+      (onPressed) => SnackBarAction(label: 'Switch', onPressed: onPressed),
+    ),
+  );
+
   ScaffoldMessenger.of(context).showSnackBar(snackBar);
 }
 
@@ -29,16 +84,3 @@ Future<void> launchUrlFeedback(
     }
   }
 }
-
-void showTabBackButtonMessage(BuildContext context, int tabCount) {
-  ScaffoldMessenger.of(context)
-    ..clearSnackBars()
-    ..showSnackBar(
-      SnackBar(
-        content:
-            (tabCount > 1)
-                ? const Text('Please click BACK again to close current tab')
-                : const Text('Please click BACK again to exit app'),
-      ),
-    );
-}