feat: 字幕管理 - 增删改查 + 批量导入（基于片段config） (#394)

feat: 字幕管理 - 增删改查 + 批量导入（基于片段config） (#394)

apps/api/app/api/routes/edit_plans.py

@@ -522,6 +522,245 @@ def copy_plan(
     return _to_response(new_plan)
 
 
+# ── 字幕管理 ────────────────────────────────────────────────────────────────
+
+
+class SubtitleCreateRequest(BaseModel):
+    """添加字幕请求体"""
+
+    start: float = Field(..., ge=0, description="开始时间（秒）")
+    end: float = Field(..., gt=0, description="结束时间（秒）")
+    text: str = Field(..., min_length=1, max_length=500, description="字幕文本")
+    style: Optional[dict[str, Any]] = Field(default=None, description="字幕样式")
+
+
+class SubtitleUpdateRequest(BaseModel):
+    """更新字幕请求体"""
+
+    start: Optional[float] = Field(default=None, ge=0, description="开始时间（秒）")
+    end: Optional[float] = Field(default=None, gt=0, description="结束时间（秒）")
+    text: Optional[str] = Field(default=None, min_length=1, max_length=500, description="字幕文本")
+    style: Optional[dict[str, Any]] = Field(default=None, description="字幕样式")
+
+
+class SubtitleBatchUpdateRequest(BaseModel):
+    """批量更新字幕请求体"""
+
+    subtitles: list[dict[str, Any]] = Field(
+        default_factory=list,
+        description="字幕列表（全量替换），每条包含 start/end/text，可选 id/style",
+    )
+
+
+@router.get(
+    "/clips/{clip_id}/subtitles",
+    response_model=list[dict[str, Any]],
+    summary="获取片段的所有字幕",
+)
+def list_subtitles(
+    clip_id: str,
+    current_user: AuthenticatedUser = Depends(get_current_user),
+    db: Session = Depends(get_db_session),
+    project_repo=Depends(get_project_repository),
+) -> list[dict[str, Any]]:
+    """获取指定片段的所有字幕，按时间排序。"""
+    service = EditPlanService(db)
+
+    clip = service.get_clip(clip_id)
+    if clip is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"片段不存在: {clip_id}",
+        )
+    plan = service.get_plan(clip.plan_id)
+    if plan and plan.project_id:
+        check_project_access(project_repo, current_user, plan.project_id)
+
+    return service.list_subtitles(clip_id)
+
+
+@router.post(
+    "/clips/{clip_id}/subtitles",
+    response_model=dict[str, Any],
+    summary="添加一条字幕",
+    status_code=status.HTTP_201_CREATED,
+)
+def add_subtitle(
+    clip_id: str,
+    body: SubtitleCreateRequest,
+    current_user: AuthenticatedUser = Depends(get_current_user),
+    db: Session = Depends(get_db_session),
+    project_repo=Depends(get_project_repository),
+) -> dict[str, Any]:
+    """给片段添加一条字幕。"""
+    service = EditPlanService(db)
+
+    clip = service.get_clip(clip_id)
+    if clip is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"片段不存在: {clip_id}",
+        )
+    plan = service.get_plan(clip.plan_id)
+    if plan and plan.project_id:
+        check_project_access(project_repo, current_user, plan.project_id)
+
+    try:
+        subtitle = service.add_subtitle(
+            clip_id,
+            start=body.start,
+            end=body.end,
+            text=body.text,
+            style=body.style,
+        )
+    except ValueError as e:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=str(e),
+        ) from e
+
+    logger.info("添加字幕: clip_id=%s by user=%s", clip_id, current_user.user.id)
+    return subtitle
+
+
+@router.put(
+    "/clips/{clip_id}/subtitles/{subtitle_id}",
+    response_model=dict[str, Any],
+    summary="更新一条字幕",
+)
+def update_subtitle(
+    clip_id: str,
+    subtitle_id: str,
+    body: SubtitleUpdateRequest,
+    current_user: AuthenticatedUser = Depends(get_current_user),
+    db: Session = Depends(get_db_session),
+    project_repo=Depends(get_project_repository),
+) -> dict[str, Any]:
+    """更新一条字幕的时间、文本或样式。"""
+    service = EditPlanService(db)
+
+    clip = service.get_clip(clip_id)
+    if clip is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"片段不存在: {clip_id}",
+        )
+    plan = service.get_plan(clip.plan_id)
+    if plan and plan.project_id:
+        check_project_access(project_repo, current_user, plan.project_id)
+
+    try:
+        subtitle = service.update_subtitle(
+            clip_id,
+            subtitle_id,
+            start=body.start,
+            end=body.end,
+            text=body.text,
+            style=body.style,
+        )
+    except ValueError as e:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=str(e),
+        ) from e
+
+    logger.info(
+        "更新字幕: clip_id=%s subtitle_id=%s by user=%s",
+        clip_id,
+        subtitle_id,
+        current_user.user.id,
+    )
+    return subtitle
+
+
+@router.delete(
+    "/clips/{clip_id}/subtitles/{subtitle_id}",
+    summary="删除一条字幕",
+    status_code=status.HTTP_204_NO_CONTENT,
+    response_model=None,
+    response_class=Response,
+)
+def delete_subtitle(
+    clip_id: str,
+    subtitle_id: str,
+    current_user: AuthenticatedUser = Depends(get_current_user),
+    db: Session = Depends(get_db_session),
+    project_repo=Depends(get_project_repository),
+) -> None:
+    """删除一条字幕。"""
+    service = EditPlanService(db)
+
+    clip = service.get_clip(clip_id)
+    if clip is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"片段不存在: {clip_id}",
+        )
+    plan = service.get_plan(clip.plan_id)
+    if plan and plan.project_id:
+        check_project_access(project_repo, current_user, plan.project_id)
+
+    deleted = service.delete_subtitle(clip_id, subtitle_id)
+    if not deleted:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"字幕不存在: {subtitle_id}",
+        )
+
+    logger.info(
+        "删除字幕: clip_id=%s subtitle_id=%s by user=%s",
+        clip_id,
+        subtitle_id,
+        current_user.user.id,
+    )
+
+
+@router.put(
+    "/clips/{clip_id}/subtitles",
+    response_model=list[dict[str, Any]],
+    summary="批量更新字幕（全量替换）",
+)
+def batch_update_subtitles(
+    clip_id: str,
+    body: SubtitleBatchUpdateRequest,
+    current_user: AuthenticatedUser = Depends(get_current_user),
+    db: Session = Depends(get_db_session),
+    project_repo=Depends(get_project_repository),
+) -> list[dict[str, Any]]:
+    """批量更新片段的所有字幕（全量替换）。
+
+    用于批量编辑、SRT导入、ASR结果导入等场景。
+    每条字幕包含 start/end/text，已有 id 则保留，否则生成新 id。
+    """
+    service = EditPlanService(db)
+
+    clip = service.get_clip(clip_id)
+    if clip is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"片段不存在: {clip_id}",
+        )
+    plan = service.get_plan(clip.plan_id)
+    if plan and plan.project_id:
+        check_project_access(project_repo, current_user, plan.project_id)
+
+    try:
+        subtitles = service.batch_update_subtitles(clip_id, body.subtitles)
+    except ValueError as e:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=str(e),
+        ) from e
+
+    logger.info(
+        "批量更新字幕: clip_id=%s count=%d by user=%s",
+        clip_id,
+        len(subtitles),
+        current_user.user.id,
+    )
+    return subtitles
+
+
 # ── BGM 背景音乐 ───────────────────────────────────────────────────────────