from fastapi import APIRouter, UploadFile, File, Form
import os
from shutil import copyfileobj
from scripts.rag_build_query import build_user_index

router = APIRouter()

@router.post("/upload")
def upload_user_file(user_id: str = Form(...), file: UploadFile = File(...)):
    user_doc_dir = os.path.join("docs", user_id)
    os.makedirs(user_doc_dir, exist_ok=True)

    file_path = os.path.join(user_doc_dir, file.filename)
    with open(file_path, "wb") as f:
        copyfileobj(file.file, f)

    print(f"[UPLOAD] 文件已保存至 {file_path}")

    # 自动重建用户索引
    build_user_index(user_id)
    print(f"[UPLOAD] 用户 {user_id} 的索引已重建")

    return {"status": "ok", "filename": file.filename}