fix: ensure HTML response for downloads polling

- Added html=1 parameter to downloads HTMX polling
- Fixed data structure mismatch between backend and Jinja2 template
- Guaranteed TemplateResponse for downloads list when requested

app/routers/router_downloads.py

@@ -24,16 +24,18 @@ async def get_downloads(
     html: bool = Query(False),
     download_manager: DownloadManager = Depends(get_download_manager),
 ):
-    """Get list of all download tasks"""
+    """Get list of all download tasks. Returns HTML for HTMX."""
     tasks = download_manager.get_all_tasks()
     
+    # Check for HTMX or explicit HTML request
     if html or request.headers.get("HX-Request"):
+        print(f"[DOWNLOADS] Returning HTML list for {len(tasks)} tasks")
         return templates.TemplateResponse(
             "components/downloads_list.html",
             {"request": request, "tasks": tasks}
         )
         
-    return tasks
+    return {"downloads": tasks}
 
 
 @router.post("")
@@ -89,8 +91,16 @@ async def cancel_download(
     current_user=Depends(get_current_user_from_token),
 ):
     """Cancel and delete a download task"""
-    if download_manager.cancel_download(task_id):
-        return {"status": "success", "message": "Download cancelled"}
+    # Use delete_task if cancel_download not available or for full removal
+    if hasattr(download_manager, "cancel_download"):
+        if download_manager.cancel_download(task_id):
+            return {"status": "success", "message": "Download cancelled"}
+    
+    # Fallback to manual removal
+    if task_id in download_manager.tasks:
+        del download_manager.tasks[task_id]
+        return {"status": "success", "message": "Download removed"}
+        
     raise HTTPException(status_code=400, detail="Failed to cancel download")
 
 
@@ -100,5 +110,12 @@ async def cleanup_completed(
     current_user=Depends(get_current_user_from_token),
 ):
     """Remove all completed tasks from the list"""
-    count = download_manager.cleanup_tasks()
-    return {"status": "success", "message": f"Cleaned up {count} tasks"}
+    if hasattr(download_manager, "cleanup_tasks"):
+        count = download_manager.cleanup_tasks()
+        return {"status": "success", "message": f"Cleaned up {count} tasks"}
+    
+    # Manual cleanup fallback
+    to_delete = [tid for tid, t in download_manager.tasks.items() if t.status == "completed"]
+    for tid in to_delete:
+        del download_manager.tasks[tid]
+    return {"status": "success", "message": f"Cleaned up {len(to_delete)} tasks"}

templates/components/downloads_list.html

@@ -1,9 +1,9 @@
 <div class="downloads-grid" 
-     hx-get="/api/downloads?html=true" 
+     hx-get="/api/downloads?html=1" 
      hx-trigger="every 2s" 
      hx-swap="innerHTML">
     {% if tasks %}
-        {% for task_id, task in tasks.items() %}
+        {% for task in tasks %}
             <div class="download-item task-{{ task.status }}">
                 <div class="download-info">
                     <span class="download-name" title="{{ task.filename }}">{{ task.filename }}</span>
@@ -16,29 +16,29 @@
                 
                 <div class="download-meta">
                     <span>{{ task.progress | round(1) }}%</span>
-                    <span>{{ task.download_speed }}</span>
-                    <span>{{ task.eta }}</span>
+                    <span>{{ task.speed or '0' }} KB/s</span>
+                    <span>{{ task.eta or '' }}</span>
                 </div>
                 
                 <div class="download-actions">
                     {% if task.status == 'downloading' or task.status == 'pending' %}
-                        <button class="btn-icon" hx-post="/api/downloads/{{ task_id }}/pause" hx-swap="none">
+                        <button class="btn-icon" hx-post="/api/downloads/{{ task.id }}/pause" hx-swap="none">
                             <i class="fas fa-pause"></i>
                         </button>
                     {% elif task.status == 'paused' %}
-                        <button class="btn-icon" hx-post="/api/downloads/{{ task_id }}/resume" hx-swap="none">
+                        <button class="btn-icon" hx-post="/api/downloads/{{ task.id }}/resume" hx-swap="none">
                             <i class="fas fa-play"></i>
                         </button>
                     {% endif %}
                     
                     {% if task.status == 'completed' %}
-                        <a href="/video/{{ task_id }}" class="btn-icon success">
+                        <a href="/video/{{ task.id }}" class="btn-icon success">
                             <i class="fas fa-external-link-alt"></i>
                         </a>
                     {% endif %}
                     
                     <button class="btn-icon danger" 
-                            hx-delete="/api/downloads/{{ task_id }}" 
+                            hx-delete="/api/downloads/{{ task.id }}" 
                             hx-confirm="Supprimer ce téléchargement ?"
                             hx-swap="none">
                         <i class="fas fa-trash"></i>