feat(viral-video): 动态积分定价（按tokens×单价×1.3，保留两位小数） (#2152)

Co-authored-by: xiaoxia <dev@xiaoxiajianji.com>
Co-committed-by: xiaoxia <dev@xiaoxiajianji.com>

apps/api/app/api/routes/viral_video.py

@@ -32,6 +32,8 @@ from app.schemas.viral_video import (
     ConfirmCopyRequest,
     ConfirmIntentRequest,
     CreateViralVideoRequest,
+    EstimateCreditsRequest,
+    EstimateCreditsResponse,
     GenerateCopyRequest,
     StyleTemplateListResponse,
     StyleTemplateResponse,
@@ -140,7 +142,9 @@ def _to_response(job) -> ViralVideoJobResponse:
         video_model=getattr(job, "video_model", "") or "",
         intent_result=job.intent_result,
         result_video_url=job.result_video_url,
-        credits_cost=job.credits_cost,
+        video_resolution=getattr(job, "video_resolution", "720p") or "720p",
+        credits_prepaid=float(getattr(job, "credits_prepaid", 0) or 0),
+        credits_cost=float(getattr(job, "credits_cost", 0) or 0),
         error_msg=job.error_msg,
         retry_count=job.retry_count,
         started_at=job.started_at,
@@ -193,6 +197,7 @@ def create_viral_video(
         voice_source=getattr(request, "voice_source", "") or "",
         video_ratio=getattr(request, "video_ratio", "9:16") or "9:16",
         video_model=getattr(request, "video_model", "") or "",
+        video_resolution=getattr(request, "video_resolution", "720p") or "720p",
         copy_result=None,
     )
 
@@ -235,6 +240,7 @@ def analyze_images(
         voice_source=request.voice_source or "",
         video_ratio=request.video_ratio or "9:16",
         video_model=request.video_model or "",
+        video_resolution=getattr(request, "video_resolution", "720p") or "720p",
         duration=request.duration or 15,
     )
     repo.save(job)
@@ -298,6 +304,7 @@ def generate_copy(
     job.voice_source = request.voice_source or job.voice_source
     job.video_ratio = request.video_ratio or job.video_ratio or "9:16"
     job.video_model = request.video_model or job.video_model or ""
+    job.video_resolution = getattr(request, "video_resolution", "") or job.video_resolution or "720p"
 
     job.resume_from_image_analyzed()
     repo.update(job)
@@ -330,6 +337,41 @@ def confirm_copy(
     if job.status != ViralVideoStatus.COPY_GENERATED:
         raise HTTPException(status_code=409, detail=f"任务当前状态 {job.status} 不能确认文案（需 copy_generated）")
 
+    # 积分预扣（已扣过/重试任务跳过）
+    from app.config import settings as _settings
+
+    if _settings.points_enabled:
+        already_paid = (float(getattr(job, "credits_prepaid", 0) or 0) > 0) or (
+            float(getattr(job, "credits_cost", 0) or 0) > 0
+        )
+        if not already_paid:
+            from packages.domain.points_rules import calculate_viral_video_credits, resolve_video_dimensions
+            from packages.domain.points_service import PointsService
+
+            w, h = resolve_video_dimensions(
+                getattr(job, "video_resolution", "720p") or "720p",
+                job.video_ratio or "9:16",
+            )
+            est_credits = calculate_viral_video_credits(
+                int(job.duration or 15), w, h, job.video_model or "seedance-2.5"
+            )
+            svc = PointsService()
+            res = svc.deduct_viral_video(authenticated_user.user.id, est_credits, job.id, session)
+            if not res.get("success"):
+                balance = res.get("balance", 0)
+                raise HTTPException(
+                    status_code=402,
+                    detail={
+                        "code": "INSUFFICIENT_POINTS",
+                        "message": f"积分不足，需要 {est_credits} 积分，当前余额 {balance}",
+                        "required": est_credits,
+                        "balance": balance,
+                    },
+                )
+            job.credits_prepaid = est_credits
+            job.credits_transaction_id = res.get("transaction_id", "") or ""
+            repo.update(job)
+
     job.resume_from_copy_generated(edited_copy=request.edited_copy or None)
     repo.update(job)
 
@@ -344,6 +386,21 @@ def confirm_copy(
     return _to_response(job)
 
 
+@router.post("/estimate-credits", response_model=EstimateCreditsResponse)
+def estimate_credits(
+    request: EstimateCreditsRequest,
+    authenticated_user: AuthenticatedUser = Depends(get_current_user),
+) -> EstimateCreditsResponse:
+    """爆款视频积分预估（纯计算，不扣费、不创建任务）。"""
+    from packages.domain.points_rules import calculate_viral_video_credits, resolve_video_dimensions
+
+    w, h = resolve_video_dimensions(request.resolution, request.ratio)
+    credits = calculate_viral_video_credits(
+        request.duration, w, h, request.model or "seedance-2.5"
+    )
+    return EstimateCreditsResponse(estimated_credits=credits)
+
+
 @router.get("/history", response_model=ViralVideoHistoryResponse)
 def list_viral_video_history(
     limit: int = 50,