feat: implement video job management with retry and delete functionality, enhance video generation status tracking

Co-authored-by: Copilot <copilot@github.com>

backend/app/routers/admin.py

@@ -185,3 +185,43 @@ async def admin_mark_timed_out(_: dict = Depends(require_admin)) -> dict[str, in
     conn = get_conn()
     count = mark_timed_out_video_jobs(conn, timeout_minutes=120)
     return {"timed_out": count}
+
+
+@router.post("/videos/{job_id}/retry", status_code=200)
+async def admin_retry_video_job(job_id: str, _: dict = Depends(require_admin)) -> dict[str, str]:
+    """Reset a failed or cancelled video job back to 'queued' for reprocessing."""
+    conn = get_conn()
+    lock = get_write_lock()
+    now = datetime.now(timezone.utc)
+    async with lock:
+        row = conn.execute(
+            "SELECT status FROM generated_videos WHERE id = ?", [job_id]
+        ).fetchone()
+        if row is None:
+            from fastapi import HTTPException
+            raise HTTPException(status_code=404, detail="Job not found")
+        if row[0] not in ("failed", "cancelled"):
+            from fastapi import HTTPException
+            raise HTTPException(
+                status_code=400, detail=f"Cannot retry job with status '{row[0]}'")
+        conn.execute(
+            "UPDATE generated_videos SET status = 'queued', updated_at = ? WHERE id = ?",
+            [now, job_id],
+        )
+    return {"status": "ok", "job_id": job_id}
+
+
+@router.delete("/videos/{job_id}", status_code=200)
+async def admin_delete_video_job(job_id: str, _: dict = Depends(require_admin)) -> dict[str, str]:
+    """Permanently delete a video job record."""
+    conn = get_conn()
+    lock = get_write_lock()
+    async with lock:
+        row = conn.execute(
+            "SELECT id FROM generated_videos WHERE id = ?", [job_id]
+        ).fetchone()
+        if row is None:
+            from fastapi import HTTPException
+            raise HTTPException(status_code=404, detail="Job not found")
+        conn.execute("DELETE FROM generated_videos WHERE id = ?", [job_id])
+    return {"status": "ok", "job_id": job_id}

backend/app/routers/generate.py

@@ -1,4 +1,5 @@
 """Generate router: text, image, video, and image-to-video generation."""
+import json
 from datetime import datetime, timezone
 
 import httpx
@@ -209,54 +210,32 @@ async def generate_video(
     body: VideoRequest,
     current_user: dict = Depends(get_current_user),
 ) -> VideoResponse:
-    """Generate a video from a text prompt."""
-    try:
-        result = await openrouter.generate_video(
-            model=body.model,
-            prompt=body.prompt,
-            duration_seconds=body.duration_seconds,
-            aspect_ratio=body.aspect_ratio,
-            resolution=body.resolution,
-        )
-    except httpx.HTTPStatusError as exc:
-        detail = (
-            f"OpenRouter API error: {exc.response.status_code} - {exc.response.text}"
-        )
-        raise HTTPException(
-            status_code=status.HTTP_502_BAD_GATEWAY, detail=detail)
-    except Exception as exc:
-        raise HTTPException(
-            status_code=status.HTTP_502_BAD_GATEWAY, detail=f"OpenRouter error: {exc}"
-        )
-
+    """Queue a text-to-video generation job for background processing."""
     user_id = current_user.get("id") or current_user.get("sub")
-    job_id = result.get("id", "")
-    polling_url = result.get("polling_url")
-    job_status = result.get("status", "pending")
     now = datetime.now(timezone.utc).replace(tzinfo=None)
+    request_params = json.dumps({
+        "model": body.model,
+        "prompt": body.prompt,
+        "duration_seconds": body.duration_seconds,
+        "aspect_ratio": body.aspect_ratio,
+        "resolution": body.resolution,
+    })
     db_id = None
     async with get_write_lock():
         conn = get_conn()
         row = conn.execute(
-            """INSERT INTO generated_videos (user_id, job_id, model_id, prompt, polling_url, status, created_at, updated_at)
-                VALUES (?, ?, ?, ?, ?, ?, ?, ?) RETURNING id""",
-            [user_id, job_id, body.model, body.prompt,
-             polling_url, job_status, now, now],
+            """INSERT INTO generated_videos
+               (user_id, job_id, model_id, prompt, status, request_params, generation_type, created_at, updated_at)
+               VALUES (?, ?, ?, ?, 'queued', ?, 'text_to_video', ?, ?) RETURNING id""",
+            [user_id, "", body.model, body.prompt, request_params, now, now],
         ).fetchone()
         if row:
             db_id = str(row[0])
-
-    urls = result.get("unsigned_urls") or result.get("video_urls")
     return VideoResponse(
-        id=job_id,
+        id="",
         db_id=db_id,
         model=body.model,
-        status=job_status,
-        polling_url=polling_url,
-        video_urls=urls,
-        video_url=(urls or [None])[0],
-        error=result.get("error"),
-        metadata=result.get("metadata"),
+        status="queued",
     )
 
 
@@ -265,55 +244,33 @@ async def generate_video_from_image(
     body: VideoFromImageRequest,
     current_user: dict = Depends(get_current_user),
 ) -> VideoResponse:
-    """Generate a video from an image and a text prompt."""
-    try:
-        result = await openrouter.generate_video_from_image(
-            model=body.model,
-            image_url=body.image_url,
-            prompt=body.prompt,
-            duration_seconds=body.duration_seconds,
-            aspect_ratio=body.aspect_ratio,
-            resolution=body.resolution,
-        )
-    except httpx.HTTPStatusError as exc:
-        detail = (
-            f"OpenRouter API error: {exc.response.status_code} - {exc.response.text}"
-        )
-        raise HTTPException(
-            status_code=status.HTTP_502_BAD_GATEWAY, detail=detail)
-    except Exception as exc:
-        raise HTTPException(
-            status_code=status.HTTP_502_BAD_GATEWAY, detail=f"OpenRouter error: {exc}"
-        )
-
+    """Queue an image-to-video generation job for background processing."""
     user_id = current_user.get("id") or current_user.get("sub")
-    job_id = result.get("id", "")
-    polling_url = result.get("polling_url")
-    job_status = result.get("status", "pending")
     now = datetime.now(timezone.utc).replace(tzinfo=None)
+    request_params = json.dumps({
+        "model": body.model,
+        "image_url": body.image_url,
+        "prompt": body.prompt,
+        "duration_seconds": body.duration_seconds,
+        "aspect_ratio": body.aspect_ratio,
+        "resolution": body.resolution,
+    })
     db_id = None
     async with get_write_lock():
         conn = get_conn()
         row = conn.execute(
-            """INSERT INTO generated_videos (user_id, job_id, model_id, prompt, polling_url, status, created_at, updated_at)
-            VALUES (?, ?, ?, ?, ?, ?, ?, ?) RETURNING id""",
-            [user_id, job_id, body.model, body.prompt,
-                polling_url, job_status, now, now],
+            """INSERT INTO generated_videos
+               (user_id, job_id, model_id, prompt, status, request_params, generation_type, created_at, updated_at)
+               VALUES (?, ?, ?, ?, 'queued', ?, 'image_to_video', ?, ?) RETURNING id""",
+            [user_id, "", body.model, body.prompt, request_params, now, now],
         ).fetchone()
         if row:
             db_id = str(row[0])
-
-    urls = result.get("unsigned_urls") or result.get("video_urls")
     return VideoResponse(
-        id=job_id,
+        id="",
         db_id=db_id,
         model=body.model,
-        status=job_status,
-        polling_url=polling_url,
-        video_urls=urls,
-        video_url=(urls or [None])[0],
-        error=result.get("error"),
-        metadata=result.get("metadata"),
+        status="queued",
     )