"""备用金撤回：仅申请人且审批中可回草稿。"""
from types import SimpleNamespace
from unittest.mock import MagicMock, patch

from app.services.bx.advance import AdvanceService


def _user(uid="u1"):
    return SimpleNamespace(id=uid, name="张三", dept_id="d1")


def _apply(**kwargs):
    base = {
        "id": "a1",
        "applicant_id": "u1",
        "status": "pending",
        "current_node": "一级审批",
        "update_by": None,
    }
    base.update(kwargs)
    return SimpleNamespace(**base)


@patch.object(AdvanceService, "_tenant_no", return_value="T1")
@patch.object(AdvanceService, "get_by_id")
def test_withdraw_pending_by_applicant(mock_get, _tenant):
    apply_obj = _apply()
    mock_get.return_value = apply_obj
    db = MagicMock()
    out = AdvanceService.withdraw(db, "a1", _user("u1"))
    assert out is apply_obj
    assert apply_obj.status == "draft"
    assert apply_obj.current_node is None
    assert apply_obj.update_by == "u1"
    db.flush.assert_called_once()


@patch.object(AdvanceService, "_tenant_no", return_value="T1")
@patch.object(AdvanceService, "get_by_id")
def test_withdraw_rejects_non_applicant(mock_get, _tenant):
    mock_get.return_value = _apply(applicant_id="u1")
    assert AdvanceService.withdraw(MagicMock(), "a1", _user("u2")) is None


@patch.object(AdvanceService, "_tenant_no", return_value="T1")
@patch.object(AdvanceService, "get_by_id")
def test_withdraw_rejects_non_pending(mock_get, _tenant):
    mock_get.return_value = _apply(status="draft")
    assert AdvanceService.withdraw(MagicMock(), "a1", _user("u1")) is None


@patch.object(AdvanceService, "_tenant_no", return_value="T1")
@patch.object(AdvanceService, "get_by_id")
def test_withdraw_missing_returns_none(mock_get, _tenant):
    mock_get.return_value = None
    assert AdvanceService.withdraw(MagicMock(), "a1", _user("u1")) is None