Improved rss thumbnail coverage

internal/glance/widget-rss.go

@@ -388,15 +388,34 @@ func (widget *rssWidget) fetchItemsFromFeedTask(request rssFeedRequest) ([]rssFe
 }
 
 func findThumbnailInItemExtensions(item *gofeed.Item) string {
-	media, ok := item.Extensions["media"]
+    media, ok := item.Extensions["media"]
 
-	if !ok {
+    if !ok {
-		return ""
+		enclosures := item.Enclosures
-	}
+        if len(enclosures) == 0 {
+            return ""
+        }
+		return recursiveFindThumbnailInEnclosures(enclosures)
+    }
 
 	return recursiveFindThumbnailInExtensions(media)
 }
 
+func recursiveFindThumbnailInEnclosures(enclosures []*gofeed.Enclosure) string {
+	url := ""
+	
+	for _, enclosure := range enclosures {
+		switch enclosure.Type {
+			case "image/generic":
+				url = enclosure.URL
+			case "image/jpeg", "image/png", "image/gif":
+				return enclosure.URL
+		}
+	}
+
+	return url
+}
+
 func recursiveFindThumbnailInExtensions(extensions map[string][]gofeedext.Extension) string {
 	for _, exts := range extensions {
 		for _, ext := range exts {