import random
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import string
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from fastapi import APIRouter, File, UploadFile, Form, BackgroundTasks, Depends
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from fastapi.responses import JSONResponse, FileResponse
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from sqlalchemy.orm import Session
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from starlette.websockets import WebSocket
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from app.api import get_current_user, get_current_user_websocket
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from app.models import UserModel, AgentType
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from app.models.base_model import get_db
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from app.service.session import SessionService
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from app.utils.excelmerge.conformity import run_conformity
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import shutil
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import os
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router = APIRouter()
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ALLOWED_EXTENSIONS = {'xlsx'}
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EXCEL_FILES_PATH = 'data/output'
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SOURCE_FILES_PATH = 'data/source'
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def allowed_file(filename: str) -> bool:
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return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS
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def create_dir_if_not_exists(path: str):
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if not os.path.exists(path):
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os.makedirs(path)
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def clear_directory(path: str) -> dict:
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for filename in os.listdir(path):
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file_path = os.path.join(path, filename)
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try:
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if os.path.isfile(file_path) or os.path.islink(file_path):
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os.unlink(file_path)
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elif os.path.isdir(file_path):
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shutil.rmtree(file_path)
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except Exception as e:
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return {"error": "清空出错"}
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return {"message": "目录已清空"}
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def user_file_path(userid: str, path: str) -> str:
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return os.path.join(path, userid)
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def generate_db_id(prefix: str = "me") -> str:
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random_part = ''.join(random.choices(string.ascii_letters + string.digits, k=13))
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return prefix + random_part
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def db_create_session(db: Session, user_id: str):
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db_id = generate_db_id()
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session = SessionService(db).create_session(
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db_id,
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"合并Excel",
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"basic_excel_merge",
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AgentType.BASIC,
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int(user_id)
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)
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return session
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@router.post('/excel/upload')
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async def upload_file(files: list[UploadFile] = File(...), current_user: UserModel = Depends(get_current_user)):
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user_id = str(current_user.id)
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if not any(file.filename for file in files):
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return JSONResponse(content={"error": "没有文件部分"}, status_code=400)
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if not user_id:
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return JSONResponse(content={"error": "缺少参数user_id"}, status_code=400)
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user_source = user_file_path(user_id, SOURCE_FILES_PATH)
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user_excel = EXCEL_FILES_PATH
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create_dir_if_not_exists(user_source)
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create_dir_if_not_exists(user_excel)
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clear_directory(user_source)
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save_path_list = []
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for file in files:
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if file.filename == '':
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return JSONResponse(content={"error": "没有选择文件"}, status_code=400)
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if file and allowed_file(file.filename):
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save_path = os.path.join(user_source, file.filename)
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with open(save_path, 'wb') as buffer:
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shutil.copyfileobj(file.file, buffer)
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save_path_list.append(save_path)
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else:
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return JSONResponse(content={"error": "不允许的文件类型"}, status_code=400)
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return JSONResponse(content={"code": 200, "msg": "", "data": {}}, status_code=200)
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# ws://localhost:9201/api/document/ws/excel
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@router.websocket("/ws/excel")
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async def ws_excel(websocket: WebSocket,
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current_user: UserModel = Depends(get_current_user_websocket),
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db: Session = Depends(get_db)):
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await websocket.accept()
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user_id = str(current_user.id)
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user_source = user_file_path(user_id, SOURCE_FILES_PATH)
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user_excel = EXCEL_FILES_PATH
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create_dir_if_not_exists(user_source)
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create_dir_if_not_exists(user_excel)
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while True:
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data = await websocket.receive_text()
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try:
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if data == "\"合并Excel\"":
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merge_file = run_conformity(user_source, user_excel)
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if merge_file is not None:
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await websocket.send_json({
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"message": "文档合并成功！",
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"type": "stream",
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"file_name": f"{merge_file}.xlsx",
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"download_url": f"./api/document/download/{merge_file}.xlsx"
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})
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await websocket.send_json({
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"message": "文档合并成功！",
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"type": "close",
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})
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# 创建会话记录
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session = db_create_session(db, user_id)
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# 更新会话记录
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if session:
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session_id = session.id
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new_message = {
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"role": "user",
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"download_url": f"./api/document/download/{merge_file}.xlsx"
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}
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session_service = SessionService(db)
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session_service.update_session(session_id, message=new_message)
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else:
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await websocket.send_json({"error": "合并失败", "type": "stream", "files": []})
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await websocket.close()
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else:
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print(f"Received data: {data}")
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await websocket.send_json({"error": "未知指令", "data": str(data)})
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await websocket.close()
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except Exception as e:
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await websocket.send_json({"error": str(e)})
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await websocket.close()
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@router.get("/download/{file_full_name}")
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async def download_file(file_full_name: str):
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file_name = os.path.basename(file_full_name)
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user_excel = EXCEL_FILES_PATH
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file_path = os.path.join(user_excel, file_full_name)
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if not os.path.exists(file_path):
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return JSONResponse(content={"error": "文件不存在"}, status_code=404)
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return FileResponse(
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path=file_path,
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filename="Excel.xlsx",
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media_type='application/octet-stream',
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)
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# def delete_file():
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# try:
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# os.unlink(file_path)
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# except OSError as e:
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# print(f"Deleting file error")
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# 待下载完成后删除生成的文件
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# background_tasks.add_task(delete_file)
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# return FileResponse(path=file_path, filename=file_name,
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# media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
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