from fastapi import Depends, APIRouter, HTTPException, UploadFile, File, requests, Query
from sqlalchemy.orm import Session

from app.api import Response, get_current_user, ResponseList
from app.config.config import settings
from app.models.agent_model import AgentType, AgentModel
from app.models.base_model import get_db
from app.models.user_model import UserModel
from app.service.bisheng import BishengService
from app.service.ragflow import RagflowService
from app.service.token import get_ragflow_token, get_bisheng_token

router = APIRouter()


@router.post("/upload/{agent_id}", response_model=Response)
async def upload_file(agent_id: str,
                      file: UploadFile = File(...),
                      chat_id: str = Query(..., description="The ID of the chat"),
                      db: Session = Depends(get_db),
                      current_user: UserModel = Depends(get_current_user)
                      ):
    agent = db.query(AgentModel).filter(AgentModel.id == agent_id).first()
    if not agent:
        return Response(code=404, msg="Agent not found")
    # 读取上传的文件内容
    try:
        file_content = await file.read()
    except Exception as e:
        return Response(code=400, msg=str(e))

    if agent.agent_type == AgentType.RAGFLOW:
        token = get_ragflow_token(db, current_user.id)
        ragflow_service = RagflowService(base_url=settings.ragflow_base_url)
        # 查询会话是否存在，不存在先创建会话
        history = await ragflow_service.get_session_history(token, chat_id)
        if len(history) == 0:
            message = {"role": "user", "message": file.filename}
            await ragflow_service.set_session(token, agent_id, message, chat_id, True)

        ragflow_service = RagflowService(base_url=settings.ragflow_base_url)
        token = get_ragflow_token(db, current_user.id)
        doc_ids = await ragflow_service.upload_and_parse(token, chat_id, file.filename, file_content)
        return Response(code=200, msg="", data={"doc_ids": doc_ids, "file_name": file.filename})

    elif agent.agent_type == AgentType.BISHENG:
        bisheng_service = BishengService(base_url=settings.bisheng_base_url)
        try:
            token = get_bisheng_token(db, current_user.id)
            result = await bisheng_service.upload(token, file.filename, file_content)
        except Exception as e:
            raise HTTPException(status_code=500, detail=str(e))
        result["file_name"] = file.filename
        return Response(code=200, msg="", data=result)

    else:
        return Response(code=200, msg="Unsupported agent type")