from typing import Optional
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import requests
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from fastapi import Depends, APIRouter, HTTPException, UploadFile, File, Query
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from pydantic import BaseModel
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from sqlalchemy.orm import Session
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from starlette.responses import StreamingResponse
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from app.api import Response, get_current_user, ResponseList
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from app.config.config import settings
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from app.models.agent_model import AgentType, AgentModel
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from app.models.base_model import get_db
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from app.models.user_model import UserModel
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from app.service.bisheng import BishengService
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from app.service.ragflow import RagflowService
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from app.service.token import get_ragflow_token, get_bisheng_token
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import urllib.parse
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router = APIRouter()
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@router.post("/upload/{agent_id}", response_model=Response)
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async def upload_file(agent_id: str,
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file: UploadFile = File(...),
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chat_id: str = Query(None, description="The ID of the chat"),
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db: Session = Depends(get_db),
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current_user: UserModel = Depends(get_current_user)
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):
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agent = db.query(AgentModel).filter(AgentModel.id == agent_id).first()
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if not agent:
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return Response(code=404, msg="Agent not found")
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# 读取上传的文件内容
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try:
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file_content = await file.read()
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except Exception as e:
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return Response(code=400, msg=str(e))
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if agent.agent_type == AgentType.RAGFLOW:
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token = get_ragflow_token(db, current_user.id)
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ragflow_service = RagflowService(base_url=settings.ragflow_base_url)
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# 查询会话是否存在，不存在先创建会话
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history = await ragflow_service.get_session_history(token, chat_id)
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if len(history) == 0:
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message = {"role": "user", "message": file.filename}
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await ragflow_service.set_session(token, agent_id, message, chat_id, True)
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ragflow_service = RagflowService(base_url=settings.ragflow_base_url)
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token = get_ragflow_token(db, current_user.id)
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doc_ids = await ragflow_service.upload_and_parse(token, chat_id, file.filename, file_content)
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return Response(code=200, msg="", data={"doc_ids": doc_ids, "file_name": file.filename})
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elif agent.agent_type == AgentType.BISHENG:
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bisheng_service = BishengService(base_url=settings.bisheng_base_url)
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try:
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token = get_bisheng_token(db, current_user.id)
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result = await bisheng_service.upload(token, file.filename, file_content)
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except Exception as e:
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raise HTTPException(status_code=500, detail=str(e))
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result["file_name"] = file.filename
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return Response(code=200, msg="", data=result)
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else:
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return Response(code=200, msg="Unsupported agent type")
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@router.get("/download/", response_model=Response)
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async def download_file(
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url: Optional[str] = Query(None, description="URL of the file to download for bisheng"),
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agent_id: str = Query(..., description="Agent ID"),
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doc_id: Optional[str] = Query(None, description="Optional doc id for ragflow agents"),
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doc_name: Optional[str] = Query(None, description="Optional doc name for ragflow agents"),
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db: Session = Depends(get_db)
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):
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agent = db.query(AgentModel).filter(AgentModel.id == agent_id).first()
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if not agent:
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return Response(code=404, msg="Agent not found")
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if agent.agent_type == AgentType.BISHENG:
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url = urllib.parse.unquote(url)
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# 从 URL 中提取文件名
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parsed_url = urllib.parse.urlparse(url)
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filename = urllib.parse.unquote(parsed_url.path.split('/')[-1])
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url = url.replace("http://minio:9000", settings.bisheng_base_url)
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elif agent.agent_type == AgentType.RAGFLOW:
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if not doc_id:
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return Response(code=400, msg="doc_id is required")
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url = f"{settings.ragflow_base_url}/v1/document/get/{doc_id}"
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filename = doc_name
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else:
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return Response(code=400, msg="Unsupported agent type")
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try:
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# 发送GET请求获取文件内容
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response = requests.get(url, stream=True)
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response.raise_for_status() # 检查请求是否成功
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# 返回流式响应
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return StreamingResponse(
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response.iter_content(chunk_size=1024),
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media_type="application/octet-stream",
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headers={"Content-Disposition": f"attachment; filename*=utf-8''{urllib.parse.quote(filename)}"}
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)
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except Exception as e:
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raise HTTPException(status_code=400, detail=f"Error downloading file: {e}")
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