"""角色授权并集、即时撤权与独立工资月份锁，不再使用个人覆盖或全局绑定。"""

import pytest
from pydantic import ValidationError
from sqlalchemy import select

from app.core.exceptions import BadRequestError, ForbiddenError
from app.models import Permission, Role, RolePermission, User, UserRole
from app.schemas.authorization import AuthorizationPreviewIn
from app.services import authorization_service as service
from app.services.permission_catalog import CATALOG
from tests.unit.test_tplus_workbench import work_session as work_session


@pytest.fixture
def auth_case(work_session):
    session = work_session
    user = User(username="auth_test", password="test_hash", status=1)
    role = Role(role_code="auth_role", role_name="测试权限", status=1)
    session.add_all([user, role])
    session.flush()
    session.add(UserRole(user_id=user.id, role_id=role.id))
    for code in (
        "base:personnel:view",
        "base:personnel:regions",
        "payroll:view",
        "payroll:calculate",
    ):
        permission = session.scalar(select(Permission).where(Permission.perm_code == code))
        session.add(RolePermission(role_id=role.id, permission_id=permission.id))
    session.commit()
    return session, user, role


def test_用户权限仅继承角色且来源清晰(auth_case):
    session, user, _ = auth_case
    result = service.calculate(session, user)
    assert set(result["permissions"]) == {
        "base:personnel:view",
        "base:personnel:regions",
        "payroll:view",
        "payroll:calculate",
    }
    assert result["sources"]["payroll:calculate"] == {
        "roles": ["auth_role"],
        "override": None,
        "effective": True,
    }


def test_操作缺少模块查看权限时不生效(auth_case):
    session, user, role = auth_case
    permission = session.scalar(
        select(Permission).where(Permission.perm_code == "base:personnel:view")
    )
    link = session.scalar(
        select(RolePermission).where(
            RolePermission.role_id == role.id, RolePermission.permission_id == permission.id
        )
    )
    session.delete(link)
    session.flush()
    assert "base:personnel:regions" not in service.calculate(session, user)["permissions"]


def test_多个角色权限取并集且无需指定制作人(auth_case):
    session, user, role = auth_case
    other = Role(role_code="auth_extra", role_name="额外职责", status=1)
    session.add(other)
    session.flush()
    permission = session.scalar(
        select(Permission).where(Permission.perm_code == "payroll:allocation")
    )
    session.add(RolePermission(role_id=other.id, permission_id=permission.id))
    session.add(UserRole(user_id=user.id, role_id=other.id))
    session.flush()
    assert service.setting(session).maker_user_id is None
    assert "payroll:allocation" in service.calculate(session, user)["permissions"]
    service.require_permission(session, user, "payroll:calculate")
    service.require_permission(session, user, "payroll:allocation")
    role.status = 0
    session.flush()
    assert "payroll:allocation" not in service.calculate(session, user)["permissions"]


def test_角色停用立即撤销旧会话权限(auth_case):
    session, user, role = auth_case
    role.status = 0
    session.flush()
    assert not service.calculate(session, user)["permissions"]
    with pytest.raises(ForbiddenError):
        service.require_permission(session, user, "payroll:calculate")


def test_管理员无需绑定即可使用已配置工资功能(auth_case):
    session, user, _ = auth_case
    role = session.scalar(select(Role).where(Role.role_code == "admin"))
    user.user_roles.append(UserRole(role_id=role.id))
    session.flush()
    assert set(service.calculate(session, user)["permissions"]) == set(CATALOG)
    assert service.setting(session).maker_user_id is None
    service.require_permission(session, user, "payroll:calculate")


def test_多个获授权账号都能核算且旧绑定不影响判定(auth_case):
    session, user, role = auth_case
    other = User(username="another_operator", password="test_hash", status=1)
    session.add(other)
    session.flush()
    session.add(UserRole(user_id=other.id, role_id=role.id))
    service.setting(session).maker_user_id = user.id
    session.flush()
    for actor in (user, other):
        service.require_permission(session, actor, "payroll:calculate")
        assert service.session_info(session, actor)["can_write_payroll"]
        assert service.session_info(session, actor)["maker_required_permissions"] == []
    with pytest.raises(ForbiddenError):
        service.require_permission(session, other, "settlements:generate")


def test_旧个人覆盖不再接受且无法另开授权入口(auth_case):
    session, user, _ = auth_case
    with pytest.raises(ValidationError):
        AuthorizationPreviewIn(
            role_codes=["auth_role"],
            overrides=[{"permission_code": "payroll:calculate", "effect": "DENY"}],
        )
    with pytest.raises(BadRequestError, match="角色授权"):
        service.calculate(session, user, overrides={"payroll:calculate": "DENY"})


def test_普通角色不能获得管理员专用权限(auth_case):
    session, user, role = auth_case
    permission = session.scalar(
        select(Permission).where(Permission.perm_code == "system:roles:update")
    )
    session.add(RolePermission(role_id=role.id, permission_id=permission.id))
    session.flush()
    assert "system:roles:update" not in service.calculate(session, user)["permissions"]


def test_停用账号不保留角色权限(auth_case):
    session, user, _ = auth_case
    user.status = 0
    assert not service.calculate(session, user)["permissions"]


def test_取消全局绑定仍保留月份实际经办人与生成锁(auth_case):
    from datetime import datetime

    from app.models import PayrollMonth
    from app.services import payroll_months

    session, user, role = auth_case
    other = User(username="second_month_operator", password="test_hash", status=1)
    session.add(other)
    session.flush()
    session.add(UserRole(user_id=other.id, role_id=role.id))
    session.add(PayrollMonth(month="2091-11", maker_id=user.id, maker_name=user.username, generated_at=datetime(2091, 11, 30)))
    session.flush()
    assert service.setting(session).maker_user_id is None
    with pytest.raises(ForbiddenError, match="其他制作人"):
        payroll_months.lock_month(session, "2091-11", other)
    with pytest.raises(BadRequestError, match="已锁定"):
        payroll_months.ensure_allocation_editable(session, "2091-11", user)