"""角色请求模型单元测试。

守的是**角色编码的格式红线**：编码会进入授权判断（`ROLE_ADMIN` 按编码
比对）与操作日志，必须限定为小写字母开头的小写/数字/下划线组合 ——
放开大写或中文会让对照与检索困难，超长则与列宽（32）不符。
"""

import pytest
from pydantic import ValidationError

from app.schemas.role import RoleCreateIn, RoleQuery, RoleStatusIn, RoleUpdateIn


def _create(**overrides: object) -> RoleCreateIn:
    base: dict[str, object] = {"role_code": "finance", "role_name": "财务"}
    base.update(overrides)
    return RoleCreateIn(**base)


class TestRoleCodePattern:
    """编码规则：^[a-z][a-z0-9_]{1,31}$"""

    def test_合法编码通过(self) -> None:
        assert _create().role_code == "finance"

    def test_下划线与数字通过(self) -> None:
        assert _create(role_code="sales_01").role_code == "sales_01"

    def test_大写字母被拒(self) -> None:
        with pytest.raises(ValidationError):
            _create(role_code="Finance")

    def test_中文被拒(self) -> None:
        with pytest.raises(ValidationError):
            _create(role_code="财务")

    def test_数字开头被拒(self) -> None:
        with pytest.raises(ValidationError):
            _create(role_code="1abc")

    def test_下划线开头被拒(self) -> None:
        with pytest.raises(ValidationError):
            _create(role_code="_abc")

    def test_单字符被拒(self) -> None:
        with pytest.raises(ValidationError):
            _create(role_code="a")

    def test_超长被拒(self) -> None:
        with pytest.raises(ValidationError):
            _create(role_code="a" * 33)

    def test_首尾空白被自动去除(self) -> None:
        assert _create(role_code=" finance ").role_code == "finance"


class TestInitialPermissions:
    def test_旧创建请求兼容且默认不授权(self):
        assert _create().permission_codes is None

    def test_初始授权无需手动填写修改原因(self):
        payload = _create(permission_codes=["base:personnel:view"])
        assert payload.reason is None

    @pytest.mark.parametrize("reason", ["", "   "])
    def test_显式提供的原因不能是空白(self, reason):
        with pytest.raises(ValidationError):
            _create(permission_codes=["base:personnel:view"], reason=reason)

    def test_初始权限和原因保留(self):
        payload = _create(permission_codes=["base:personnel:view"], reason="  增加资料查看职责  ")
        assert payload.permission_codes == ["base:personnel:view"]
        assert payload.reason == "增加资料查看职责"


class TestRoleUpdate:
    """编辑模型：不含 role_code。"""

    def test_编辑不接受role_code(self) -> None:
        """编码是授权判定锚点，编辑接口有意不接收；多余字段被忽略而非报错
        （前端表单可能整份回填提交）。"""
        payload = RoleUpdateIn(role_name="财务二组", role_code="hacked")
        assert not hasattr(payload, "role_code")

    def test_名称为空被拒(self) -> None:
        with pytest.raises(ValidationError):
            RoleUpdateIn(role_name="")

    def test_排序负数被拒(self) -> None:
        with pytest.raises(ValidationError):
            RoleUpdateIn(role_name="财务", sort_order=-1)


class TestRoleStatusAndQuery:
    """状态与查询模型。"""

    def test_状态只能为0或1(self) -> None:
        assert RoleStatusIn(status=0).status == 0
        assert RoleStatusIn(status=1).status == 1
        with pytest.raises(ValidationError):
            RoleStatusIn(status=2)

    def test_查询默认分页(self) -> None:
        query = RoleQuery()
        assert query.page_num == 1
        assert query.page_size == 10
        assert query.keyword is None
        assert query.status is None

    def test_分页别名照常工作(self) -> None:
        """pageNum/pageSize 是前端契约（PageQuery 的 alias）。"""
        query = RoleQuery(pageNum=3, pageSize=5)
        assert query.offset == 10

    def test_关键词超长被拒(self) -> None:
        with pytest.raises(ValidationError):
            RoleQuery(keyword="a" * 65)