trying parse different url, but failed

src-tauri/src/downloader.rs

@@ -46,18 +46,22 @@ pub struct ProgressEvent {
     pub status: String, // "downloading", "processing", "finished", "error"
 }
 
-pub async fn fetch_metadata(app: &AppHandle, url: &str) -> Result<MetadataResult> {
+pub async fn fetch_metadata(app: &AppHandle, url: &str, parse_mix_playlist: bool) -> Result<MetadataResult> {
     let ytdlp_path = ytdlp::get_ytdlp_path(app)?;
     
-    // Use std::process for simple output capture if it's short, but tokio is safer for async.
-    let output = Command::new(ytdlp_path)
-        .arg("--dump-single-json")
-        .arg("--flat-playlist")
-        .arg(url)
-        // Stop errors from cluttering
-        .stderr(Stdio::piped())
-        .output()
-        .await?;
+    let mut cmd = Command::new(ytdlp_path);
+    cmd.arg("--dump-single-json")
+       .arg("--flat-playlist")
+       .arg("--no-warnings");
+
+    if parse_mix_playlist {
+        cmd.arg("--playlist-end").arg("20");
+    }
+
+    cmd.arg(url);
+    cmd.stderr(Stdio::piped());
+    
+    let output = cmd.output().await?;
 
     if !output.status.success() {
         let stderr = String::from_utf8_lossy(&output.stderr);
@@ -90,10 +94,18 @@ pub async fn fetch_metadata(app: &AppHandle, url: &str) -> Result<MetadataResult
 }
 
 fn parse_video_metadata(json: &serde_json::Value) -> VideoMetadata {
+    let id = json["id"].as_str().unwrap_or("").to_string();
+    
+    // Thumbnail fallback logic
+    let thumbnail = match json.get("thumbnail").and_then(|t| t.as_str()) {
+        Some(t) if !t.is_empty() => t.to_string(),
+        _ => format!("https://i.ytimg.com/vi/{}/mqdefault.jpg", id),
+    };
+
     VideoMetadata {
-        id: json["id"].as_str().unwrap_or("").to_string(),
+        id,
         title: json["title"].as_str().unwrap_or("Unknown Title").to_string(),
-        thumbnail: json["thumbnail"].as_str().unwrap_or("").to_string(), // Note: thumbnails might be an array sometimes, usually string in flat-playlist
+        thumbnail,
         duration: json["duration"].as_f64(),
         uploader: json["uploader"].as_str().map(|s| s.to_string()),
     }
@@ -182,4 +194,4 @@ pub async fn download_video(
         }).ok();
         Err(anyhow!("Download process failed"))
     }
-}
+}