from fastapi import APIRouter, File, UploadFile, Form, BackgroundTasks, Depends
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from fastapi.responses import JSONResponse, FileResponse
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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
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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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@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 = user_file_path(user_id, 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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clear_directory(user_excel)
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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, current_user: UserModel = Depends(get_current_user_websocket)):
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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 = user_file_path(user_id, 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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run_excel = run_conformity(user_source, user_excel)
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files = os.listdir(user_excel)
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if run_excel:
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first_file = files[0]
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file_name = os.path.basename(first_file)
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download_url = f"./api/document/download/{first_file}"
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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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"files": [{
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"file_name": file_name,
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"file_url": download_url
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}]
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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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else:
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await websocket.send_json({"error": "合并失败", "type": "stream", "files": []})
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elif data == "\"查询合并进度\"":
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files = os.listdir(user_excel)
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if not files:
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await websocket.send_json({"step_message": "正在合并中", "type": "stream", "files": []})
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else:
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await websocket.send_json({"step_message": "文档合并成功！", "type": "stream", "files": []})
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elif data == "\"获取文件\"":
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files = os.listdir(user_excel)
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if not files:
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await websocket.send_json({"error": "目录下没有生成的文件", "type": "stream", "files": []})
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else:
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first_file = files[0]
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file_name = os.path.basename(first_file)
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file_url = f"./api/document/download/{first_file}"
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await websocket.send_json({
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"step_message": "文档合并成功！",
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"type": "stream",
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"files": [{
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"file_name": file_name,
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"file_url": file_url
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}]
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})
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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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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/excel")
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async def download_file(background_tasks: BackgroundTasks, current_user: UserModel = Depends(get_current_user)):
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user_id = str(current_user.id)
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user_excel = user_file_path(user_id, EXCEL_FILES_PATH)
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user_source = user_file_path(user_id, SOURCE_FILES_PATH)
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if not os.path.exists(user_excel):
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return JSONResponse(status_code=404, content={"error": "用户目录不存在"})
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excel_files = [f for f in os.listdir(user_excel) if os.path.isfile(os.path.join(user_excel, f))]
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excel_files.sort(key=lambda x: os.path.getmtime(os.path.join(user_excel, x)), reverse=True)
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if not excel_files:
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return JSONResponse(status_code=404, content={"error": "用户目录内没有文件"})
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filename = excel_files[0]
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file_path = os.path.join(user_excel, filename)
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def delete_files_in_directory(directory):
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for root, dirs, files in os.walk(directory, topdown=False):
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for name in files:
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os.remove(os.path.join(root, name))
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for name in dirs:
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os.rmdir(os.path.join(root, name))
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def delete_file():
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try:
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delete_files_in_directory(user_excel)
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delete_files_in_directory(user_source)
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except OSError as e:
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print(f"Error deleting file {file_path}: {e}")
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background_tasks.add_task(delete_file)
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return FileResponse(file_path, filename=filename,
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media_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
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