Improved rss thumbnail coverage

internal/glance/widget-rss.go

@@ -391,12 +391,31 @@ func findThumbnailInItemExtensions(item *gofeed.Item) string {
     media, ok := item.Extensions["media"]
 
     if !ok {
+		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 {