from __future__ import annotations

import unittest
from datetime import datetime, timezone

from govoplan_core.core.poll import PollAnswerRef, PollOptionUpdateCommand, PollResponseRef


class PollContractTests(unittest.TestCase):
    def test_response_ref_remains_backwards_compatible_and_can_carry_answers(self) -> None:
        submitted_at = datetime(2026, 7, 20, tzinfo=timezone.utc)

        legacy = PollResponseRef(None, submitted_at)
        detailed = PollResponseRef(
            invitation_id="invitation-1",
            submitted_at=submitted_at,
            respondent_id="person-1",
            answers=(PollAnswerRef(option_id="option-1", option_key="slot-1", value="available"),),
        )

        self.assertEqual(legacy.answers, ())
        self.assertEqual(detailed.answers[0].value, "available")

    def test_option_update_command_is_a_complete_immutable_snapshot(self) -> None:
        command = PollOptionUpdateCommand(
            label="Tuesday 10:00",
            value={"slot_id": "slot-1"},
            metadata={"source": "scheduling"},
        )

        self.assertEqual(command.label, "Tuesday 10:00")
        self.assertEqual(command.value, {"slot_id": "slot-1"})


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