Add Deno integration check and system info thread

Introduce check_ytdlp_deno_integration() in ytsage_yt_dlp.py to detect Deno integration by running `yt-dlp --verbose` and scanning debug output for JS runtimes containing "deno" (with timeout and logging/fallback).

Add SystemInfoThread (QThread) in ytsage_dialogs_base.py to collect yt-dlp, ffmpeg and deno presence, versions, paths, cache timestamps and integration status in the background, emitting the gathered info via info_ready. AboutDialog now starts the thread in update_system_info() and populates the UI asynchronously via _populate_system_info(), showing a small "+ yt-dlp" integration indicator next to the Deno status when detected. Refactors usage of version/cache lookups to use the thread-provided info dictionary.

ytsage/core/ytsage_yt_dlp.py

@@ -712,3 +712,43 @@ def setup_ytdlp(parent_widget=None):
     # User cancelled or setup failed, return the fallback command
     logger.debug("Returning fallback command 'yt-dlp'")
     return "yt-dlp"
+
+
+def check_ytdlp_deno_integration() -> bool:
+    """
+    Check if yt-dlp is integrated with Deno by running 'yt-dlp --verbose'.
+    Returns:
+        bool: True if Deno is detected in JS runtimes, False otherwise
+    """
+    try:
+        ytdlp_path = get_yt_dlp_path()
+        if not ytdlp_path or ytdlp_path == "yt-dlp":
+            return False
+
+        # Run yt-dlp --verbose to check JS runtimes
+        # We use a dummy URL or just --verbose with no URL (which might error but should print debug info)
+        # However, yt-dlp might not print debug info if no URL is provided and it errors out immediately with "usage".
+        # But per user example: "yt-dlp.exe: error: You must provide at least one URL." comes AFTER debug info.
+        
+        result = subprocess.run(
+            [str(ytdlp_path), "--verbose"],
+            capture_output=True,
+            text=True,
+            timeout=10,
+            creationflags=SUBPROCESS_CREATIONFLAGS
+        )
+        
+        # Check stderr for "[debug] JS runtimes: deno"
+        output = result.stderr
+        if "[debug] JS runtimes:" in output and "deno" in output:
+             # Find the line
+            for line in output.splitlines():
+                if "[debug] JS runtimes:" in line and "deno" in line:
+                    logger.info(f"Deno integration detected: {line.strip()}")
+                    return True
+        
+        return False
+            
+    except Exception as e:
+        logger.warning(f"Failed to check yt-dlp Deno integration: {e}")
+        return False

ytsage/gui/ytsage_gui_dialogs/ytsage_dialogs_base.py

@@ -24,10 +24,55 @@ from ...utils.ytsage_localization import _
 
 from ...core.ytsage_ffmpeg import get_ffmpeg_path
 from ...core.ytsage_utils import _version_cache, check_ffmpeg, get_ffmpeg_version, get_ytdlp_version, get_deno_version, refresh_version_cache
-from ...core.ytsage_yt_dlp import check_ytdlp_installed, get_yt_dlp_path
+from ...core.ytsage_yt_dlp import check_ytdlp_installed, get_yt_dlp_path, check_ytdlp_deno_integration
 from ...core.ytsage_deno import check_deno_installed, get_deno_path
 
 
+class SystemInfoThread(QThread):
+    """Background thread to gather system information."""
+    info_ready = Signal(dict)
+
+    def run(self):
+        info = {}
+        
+        # yt-dlp Status
+        ytdlp_found = check_ytdlp_installed()
+        info['ytdlp_found'] = ytdlp_found
+        info['ytdlp_version'] = get_ytdlp_version()
+        info['ytdlp_path'] = get_yt_dlp_path() if ytdlp_found else None
+
+        # yt-dlp cache status
+        ytdlp_cache = _version_cache.get("ytdlp", {})
+        info['ytdlp_last_check'] = ytdlp_cache.get("last_check", 0)
+        
+        # FFmpeg Status
+        ffmpeg_found = check_ffmpeg()
+        info['ffmpeg_found'] = ffmpeg_found
+        info['ffmpeg_version'] = get_ffmpeg_version() if ffmpeg_found else _('about.not_available')
+        info['ffmpeg_path'] = get_ffmpeg_path() if ffmpeg_found else None
+
+        # FFmpeg cache status
+        ffmpeg_cache = _version_cache.get("ffmpeg", {})
+        info['ffmpeg_last_check'] = ffmpeg_cache.get("last_check", 0)
+        
+        # Deno Status
+        deno_found = check_deno_installed()
+        info['deno_found'] = deno_found
+        info['deno_version'] = get_deno_version() if deno_found else _('about.not_available')
+        info['deno_path'] = get_deno_path() if deno_found else None
+        
+        # Deno cache status
+        deno_cache = _version_cache.get("deno", {})
+        info['deno_last_check'] = deno_cache.get("last_check", 0)
+
+        # Check integration with yt-dlp if both are present
+        info['integration_status'] = False
+        if deno_found and ytdlp_found:
+             info['integration_status'] = check_ytdlp_deno_integration()
+             
+        self.info_ready.emit(info)
+
+
 class LogWindow(QDialog):
     def __init__(self, parent=None) -> None:
         super().__init__(parent)
@@ -378,7 +423,13 @@ class AboutDialog(QDialog):
         return item_widget
 
     def update_system_info(self) -> None:
-        """Update the system information display with compact layout."""
+        """Start background thread to gather system info."""
+        self.info_thread = SystemInfoThread()
+        self.info_thread.info_ready.connect(self._populate_system_info)
+        self.info_thread.start()
+
+    def _populate_system_info(self, info: dict) -> None:
+        """Populate UI with gathered info."""
         # Clear existing items
         for i in reversed(range(self.status_container.count())):
             child = self.status_container.itemAt(i).widget()
@@ -386,19 +437,18 @@ class AboutDialog(QDialog):
                 child.deleteLater()
 
         # yt-dlp Status - compact version with path
-        ytdlp_found = check_ytdlp_installed()
+        ytdlp_found = info['ytdlp_found']
         ytdlp_status_text = (
             f"<span style='color: #4CAF50;'>{_('about.detected')}</span>" if ytdlp_found else f"<span style='color: #F44336;'>{_('about.missing')}</span>"
         )
-        ytdlp_version = get_ytdlp_version()
+        ytdlp_version = info['ytdlp_version']
 
         # Get yt-dlp path
-        ytdlp_path = get_yt_dlp_path() if ytdlp_found else None
+        ytdlp_path = info['ytdlp_path']
         ytdlp_path_text = ytdlp_path if ytdlp_path and ytdlp_path != "yt-dlp" else None
 
         # Simplified cache status
-        ytdlp_cache = _version_cache.get("ytdlp", {})
+        last_check = info['ytdlp_last_check']
-        last_check = ytdlp_cache.get("last_check", 0)
         cache_status = ""
         if last_check > 0:
             cache_time = datetime.fromtimestamp(last_check).strftime("%H:%M")
@@ -414,23 +464,19 @@ class AboutDialog(QDialog):
         self.status_container.addWidget(ytdlp_item)
 
         # FFmpeg Status - compact version with path
-        ffmpeg_found = check_ffmpeg()
+        ffmpeg_found = info['ffmpeg_found']
         ffmpeg_status_text = (
             f"<span style='color: #4CAF50;'>{_('about.detected')}</span>"
             if ffmpeg_found
             else f"<span style='color: #F44336;'>{_('about.missing')}</span>"
         )
-        ffmpeg_version = get_ffmpeg_version() if ffmpeg_found else _('about.not_available')
+        ffmpeg_version = info['ffmpeg_version']
 
         # Get FFmpeg path
-        ffmpeg_path_text = None
+        ffmpeg_path_text = info['ffmpeg_path']
-        if ffmpeg_found:
-            ffmpeg_path = get_ffmpeg_path()
-            ffmpeg_path_text = ffmpeg_path if ffmpeg_path else None
 
         # Simplified cache status for FFmpeg
-        ffmpeg_cache = _version_cache.get("ffmpeg", {})
+        last_check = info['ffmpeg_last_check']
-        last_check = ffmpeg_cache.get("last_check", 0)
         cache_status = ""
         if last_check > 0 and ffmpeg_found:
             cache_time = datetime.fromtimestamp(last_check).strftime("%H:%M")
@@ -446,16 +492,16 @@ class AboutDialog(QDialog):
         self.status_container.addWidget(ffmpeg_item)
 
         # Deno Status - compact version with path (only show path if in app bin directory)
-        deno_found = check_deno_installed()
+        deno_found = info['deno_found']
         deno_status_text = (
             f"<span style='color: #4CAF50;'>{_('about.detected')}</span>" if deno_found else f"<span style='color: #F44336;'>{_('about.missing')}</span>"
         )
-        deno_version = get_deno_version() if deno_found else _('about.not_available')
+        deno_version = info['deno_version']
 
         # Get Deno path - only show if in app bin directory
         deno_path_text = None
         if deno_found:
-            deno_path = get_deno_path()
+            deno_path = info['deno_path']
             # Only show path if it's not the fallback "deno" and the file exists
             if deno_path and deno_path != "deno":
                 from pathlib import Path
@@ -465,22 +511,27 @@ class AboutDialog(QDialog):
                     deno_path_text = deno_path
 
         # Simplified cache status for Deno
-        deno_cache = _version_cache.get("deno", {})
+        last_check = info['deno_last_check']
-        last_check = deno_cache.get("last_check", 0)
         cache_status = ""
         if last_check > 0 and deno_found:
             cache_time = datetime.fromtimestamp(last_check).strftime("%H:%M")
             cache_status = f" <span style='color: #888; font-size: 10px;'>({cache_time})</span>"
+        
+        # Check integration with yt-dlp if both are present
+        integration_status = ""
+        if info.get('integration_status', False):
+             integration_status = f" <span style='color: #4CAF50; font-size: 10px; font-weight: bold;'> + yt-dlp</span>"
 
         deno_item = self._create_status_item(
             "🦕",
             "Deno",
             deno_status_text,
-            deno_version + cache_status,
+            deno_version + cache_status + integration_status,
             deno_path_text,
         )
         self.status_container.addWidget(deno_item)
 
+
     def refresh_version_info(self) -> None:
         """Refresh version information manually."""
         self.refresh_btn.setText(_('about.refreshing'))