Cheng Zhou
328 lines
12 KiB
Python
328 lines
12 KiB
Python
import os
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import uuid
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from pathlib import Path
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from urllib.parse import quote
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import aiofiles
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from fastapi import APIRouter, Depends, File, HTTPException, UploadFile, status, Request
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from fastapi.responses import FileResponse
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.core.deps import get_current_user, get_db_session, require_study_member, get_study_member
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from app.crud import attachment as attachment_crud
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from app.crud import audit as audit_crud
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from app.crud import study as study_crud
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from app.crud import user as user_crud
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from app.crud import member as member_crud
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from app.core.security import decode_token
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from app.schemas.attachment import AttachmentRead
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from app.schemas.user import UserDisplay
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router = APIRouter()
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global_router = APIRouter()
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UPLOAD_ROOT = Path(__file__).resolve().parent.parent.parent / "uploads"
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def _content_disposition(filename: str, disposition: str = "inline") -> str:
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fallback = "".join((ch if ord(ch) < 128 else "_") for ch in filename) or "download"
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quoted = quote(filename, safe="")
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return f"{disposition}; filename=\"{fallback}\"; filename*=UTF-8''{quoted}"
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async def _ensure_study_exists(db: AsyncSession, study_id: uuid.UUID):
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study = await study_crud.get(db, study_id)
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if not study:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="项目不存在")
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return study
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@router.post(
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"/",
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response_model=AttachmentRead,
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status_code=status.HTTP_201_CREATED,
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dependencies=[Depends(require_study_member())],
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)
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async def upload_attachment(
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study_id: uuid.UUID,
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entity_type: str,
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entity_id: uuid.UUID,
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file: UploadFile = File(...),
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db: AsyncSession = Depends(get_db_session),
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current_user=Depends(get_current_user),
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) -> AttachmentRead:
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await _ensure_study_exists(db, study_id)
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dest_dir = UPLOAD_ROOT / f"study_{study_id}" / f"{entity_type}_{entity_id}"
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dest_dir.mkdir(parents=True, exist_ok=True)
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unique_name = f"{uuid.uuid4()}{Path(file.filename).suffix}"
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dest_path = dest_dir / unique_name
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content = await file.read()
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async with aiofiles.open(dest_path, "wb") as out_file:
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await out_file.write(content)
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attachment = await attachment_crud.create_attachment(
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db,
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study_id=study_id,
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entity_type=entity_type,
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entity_id=entity_id,
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filename=file.filename,
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file_path=str(dest_path),
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file_size=len(content),
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content_type=file.content_type,
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uploaded_by=current_user.id,
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)
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await audit_crud.log_action(
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db,
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study_id=study_id,
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entity_type=entity_type,
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entity_id=entity_id,
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action="UPLOAD_FILE",
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detail=f"文件已上传：{file.filename}",
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operator_id=current_user.id,
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operator_role=current_user.role,
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)
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return AttachmentRead(
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id=attachment.id,
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filename=attachment.filename,
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file_size=attachment.file_size,
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content_type=attachment.content_type,
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uploaded_by=UserDisplay.model_validate(current_user) if current_user else None,
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uploaded_by_id=attachment.uploaded_by,
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uploaded_at=attachment.uploaded_at,
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)
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@router.get(
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"/",
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response_model=list[AttachmentRead],
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dependencies=[Depends(require_study_member())],
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)
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async def list_attachments(
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study_id: uuid.UUID,
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entity_type: str,
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entity_id: uuid.UUID,
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db: AsyncSession = Depends(get_db_session),
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) -> list[AttachmentRead]:
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await _ensure_study_exists(db, study_id)
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attachments = await attachment_crud.list_attachments(db, study_id, entity_type, entity_id)
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user_ids = {a.uploaded_by for a in attachments if a.uploaded_by}
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users_map = await user_crud.get_users_by_ids(db, user_ids)
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result: list[AttachmentRead] = []
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for a in attachments:
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user = users_map.get(a.uploaded_by)
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result.append(
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AttachmentRead(
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id=a.id,
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filename=a.filename,
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file_size=a.file_size,
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content_type=a.content_type,
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uploaded_by=UserDisplay.model_validate(user) if user else None,
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uploaded_by_id=a.uploaded_by,
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uploaded_at=a.uploaded_at,
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)
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)
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return result
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@router.get(
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"/{attachment_id}/download",
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dependencies=[Depends(require_study_member())],
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)
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async def download_attachment(
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study_id: uuid.UUID,
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entity_type: str,
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entity_id: uuid.UUID,
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attachment_id: uuid.UUID,
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db: AsyncSession = Depends(get_db_session),
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) -> FileResponse:
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await _ensure_study_exists(db, study_id)
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attachment = await attachment_crud.get_attachment(db, attachment_id)
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if not attachment or attachment.study_id != study_id or attachment.entity_id != entity_id or attachment.entity_type != entity_type:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="附件不存在")
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if not os.path.exists(attachment.file_path):
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="服务器未找到文件")
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return FileResponse(
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path=attachment.file_path,
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filename=attachment.filename,
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media_type=attachment.content_type or "application/octet-stream",
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headers={"Content-Disposition": _content_disposition(attachment.filename, disposition="attachment")},
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)
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@router.get(
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"/{attachment_id}/preview",
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dependencies=[Depends(require_study_member())],
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)
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async def preview_attachment(
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study_id: uuid.UUID,
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entity_type: str,
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entity_id: uuid.UUID,
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attachment_id: uuid.UUID,
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db: AsyncSession = Depends(get_db_session),
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) -> FileResponse:
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await _ensure_study_exists(db, study_id)
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attachment = await attachment_crud.get_attachment(db, attachment_id)
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if not attachment or attachment.study_id != study_id or attachment.entity_id != entity_id or attachment.entity_type != entity_type:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="附件不存在")
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if not os.path.exists(attachment.file_path):
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="服务器未找到文件")
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return FileResponse(
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path=attachment.file_path,
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filename=attachment.filename,
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media_type=attachment.content_type or "application/octet-stream",
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headers={"Content-Disposition": _content_disposition(attachment.filename, disposition="inline")},
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)
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async def _authorize_global(request: Request, db: AsyncSession, study_id: uuid.UUID):
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token = None
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auth_header = request.headers.get("Authorization")
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if auth_header and auth_header.lower().startswith("bearer "):
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token = auth_header.split(" ", 1)[1]
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if not token:
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token = request.query_params.get("token")
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if not token:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="未登录")
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payload = decode_token(token)
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user = await user_crud.get_by_id(db, uuid.UUID(str(payload.get("sub"))))
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if not user or not user.is_active:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="账号不存在或已停用")
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if user.role == "ADMIN":
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return user, None
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membership = await member_crud.get_member(db, study_id, user.id)
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if not membership or not membership.is_active:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="不是项目成员")
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return user, membership
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@global_router.get(
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"/{attachment_id}/download",
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response_class=FileResponse,
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)
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async def global_download_attachment(
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attachment_id: uuid.UUID,
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request: Request,
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db: AsyncSession = Depends(get_db_session),
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):
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attachment = await attachment_crud.get_attachment(db, attachment_id)
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if not attachment:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="附件不存在")
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await _ensure_study_exists(db, attachment.study_id)
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user, _ = await _authorize_global(request, db, attachment.study_id)
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if not os.path.exists(attachment.file_path):
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="服务器未找到文件")
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return FileResponse(
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path=attachment.file_path,
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filename=attachment.filename,
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media_type=attachment.content_type or "application/octet-stream",
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headers={"Content-Disposition": _content_disposition(attachment.filename, disposition="attachment")},
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)
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@global_router.get(
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"/{attachment_id}/preview",
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response_class=FileResponse,
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)
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async def global_preview_attachment(
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attachment_id: uuid.UUID,
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request: Request,
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db: AsyncSession = Depends(get_db_session),
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):
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attachment = await attachment_crud.get_attachment(db, attachment_id)
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if not attachment:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="附件不存在")
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await _ensure_study_exists(db, attachment.study_id)
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await _authorize_global(request, db, attachment.study_id)
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if not os.path.exists(attachment.file_path):
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="服务器未找到文件")
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return FileResponse(
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path=attachment.file_path,
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filename=attachment.filename,
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media_type=attachment.content_type or "application/octet-stream",
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headers={"Content-Disposition": _content_disposition(attachment.filename, disposition="inline")},
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)
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@global_router.delete(
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"/{attachment_id}",
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status_code=status.HTTP_204_NO_CONTENT,
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)
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async def global_delete_attachment(
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attachment_id: uuid.UUID,
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request: Request,
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db: AsyncSession = Depends(get_db_session),
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):
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attachment = await attachment_crud.get_attachment(db, attachment_id)
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if not attachment:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="附件不存在")
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await _ensure_study_exists(db, attachment.study_id)
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user, membership = await _authorize_global(request, db, attachment.study_id)
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can_delete = (
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user.role == "ADMIN"
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or attachment.uploaded_by == user.id
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or (membership and getattr(membership, "role_in_study", None) == "PM")
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)
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if not can_delete:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="无权限删除附件")
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await attachment_crud.soft_delete_attachment(db, attachment)
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await audit_crud.log_action(
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db,
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study_id=attachment.study_id,
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entity_type=attachment.entity_type,
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entity_id=attachment.entity_id,
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action="DELETE_ATTACHMENT",
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detail=f"文件已删除：{attachment.filename}",
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operator_id=user.id,
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operator_role=user.role,
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)
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@router.delete(
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"/{attachment_id}",
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status_code=status.HTTP_204_NO_CONTENT,
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dependencies=[Depends(require_study_member())],
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)
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async def delete_attachment(
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study_id: uuid.UUID,
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entity_type: str,
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entity_id: uuid.UUID,
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attachment_id: uuid.UUID,
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db: AsyncSession = Depends(get_db_session),
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current_user=Depends(get_current_user),
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):
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await _ensure_study_exists(db, study_id)
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attachment = await attachment_crud.get_attachment(db, attachment_id)
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if (
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not attachment
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or attachment.study_id != study_id
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or attachment.entity_id != entity_id
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or attachment.entity_type != entity_type
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or attachment.is_deleted
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):
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="附件不存在")
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membership = None
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if current_user.role != "ADMIN":
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membership = await get_study_member(study_id, current_user=current_user, db=db)
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can_delete = (
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current_user.role == "ADMIN"
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or attachment.uploaded_by == current_user.id
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or (membership and getattr(membership, "role_in_study", None) == "PM")
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)
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if not can_delete:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="无权限删除附件")
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await attachment_crud.soft_delete_attachment(db, attachment)
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await audit_crud.log_action(
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db,
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study_id=study_id,
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entity_type=entity_type,
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entity_id=entity_id,
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action="DELETE_ATTACHMENT",
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detail=f"文件已删除：{attachment.filename}",
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operator_id=current_user.id,
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operator_role=current_user.role,
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)
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