from pathlib import Path

from fastapi import APIRouter, HTTPException
from fastapi.responses import FileResponse

from app.schemas.common import ApiResponse
from app.services.export_service import create_export_file, list_exports
from app.core.files import exports_root

router = APIRouter(tags=["exports"])


@router.get("/exports", response_model=ApiResponse)
def export_list() -> ApiResponse:
    return ApiResponse(data=list_exports())


@router.post("/exports/run", response_model=ApiResponse)
def export_run(payload: dict) -> ApiResponse:
    record = create_export_file(payload)
    return ApiResponse(message="导出文件已生成", data=record)


@router.get("/exports/download/{filename}")
def export_download(filename: str):
    path = exports_root() / Path(filename).name
    if not path.exists():
        raise HTTPException(status_code=404, detail="文件不存在")
    return FileResponse(path, filename=path.name)