thumb updates

src/providers/shooshtime.rs

@@ -1141,8 +1141,10 @@ impl ShooshtimeProvider {
                 item = item.preview(preview.clone());
             }
         }
-        if let Some(thumb) = preview_url {
-            item.thumb = thumb;
+        if item.thumb.is_empty() {
+            if let Some(thumb) = preview_url {
+                item.thumb = thumb;
+            }
         }
         if let Some(source) = embed_url {
             item = item.embed(VideoEmbed {
@@ -1308,3 +1310,39 @@ impl Provider for ShooshtimeProvider {
         Some(self.build_channel(clientversion))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::ShooshtimeProvider;
+    use crate::videos::VideoItem;
+
+    #[test]
+    fn preserves_list_thumb_when_detail_has_preview_url() {
+        let provider = ShooshtimeProvider::new();
+        let item = VideoItem::new(
+            "123".to_string(),
+            "Example".to_string(),
+            "https://shooshtime.com/videos/example/123/".to_string(),
+            "shooshtime".to_string(),
+            "https://shooshtime.com/list-thumb.jpg".to_string(),
+            0,
+        );
+        let html = r#"
+            <script>
+                var flashvars = {
+                    preview_url: 'https://shooshtime.com/detail-thumb.jpg'
+                };
+            </script>
+        "#;
+
+        let enriched = provider
+            .apply_detail_video(item, html, "https://shooshtime.com/videos/example/123/")
+            .unwrap();
+
+        assert_eq!(enriched.thumb, "https://shooshtime.com/list-thumb.jpg");
+        assert_eq!(
+            enriched.preview.as_deref(),
+            Some("https://shooshtime.com/detail-thumb.jpg")
+        );
+    }
+}