from __future__ import annotations

import unittest

from fastapi import HTTPException

from govoplan_idm.backend.api.v1.routes import (
    _validate_function_governance_defaults,
)


class FunctionGovernanceSettingsTests(unittest.TestCase):
    def test_bounded_delegation_and_escalation_defaults_are_accepted(self) -> None:
        _validate_function_governance_defaults(
            {
                "function_assignment_governance_defaults": {
                    "delegation_allowed": True,
                    "maximum_delegation_depth": 2,
                    "maximum_delegated_validity_days": 30,
                    "escalation": {
                        "holder": {
                            "target_function_id": "function-escalation",
                            "timeout_hours": 24,
                        }
                    },
                }
            }
        )

    def test_incomplete_or_unbounded_rules_are_rejected(self) -> None:
        invalid = (
            {"maximum_delegation_depth": 0},
            {"maximum_delegated_validity_days": 3651},
            {"escalation": {"holder": {"timeout_hours": 24}}},
            {
                "escalation": {
                    "authority": {
                        "target_function_id": "function-escalation",
                        "timeout_hours": 0,
                    }
                }
            },
            {
                "escalation": {
                    "unknown": {
                        "target_function_id": "function-escalation",
                        "timeout_hours": 24,
                    }
                }
            },
        )
        for defaults in invalid:
            with self.subTest(defaults=defaults), self.assertRaises(HTTPException):
                _validate_function_governance_defaults(
                    {"function_assignment_governance_defaults": defaults}
                )


if __name__ == "__main__":
    unittest.main()