"""Unit tests for the Lambda handler."""

from unittest.mock import patch

import pytest
from src import app


def test_handler_builds_payload_and_saves_results(mock_event: dict) -> None:
    """Handler builds the score_history payload and saves it via logic."""
    with patch(
        "src.app.logic.save_auto_approval_results",
    ) as mock_save:
        result = app.handler(mock_event, None)

    assert result == {"status": "ok"}
    mock_save.assert_called_once_with(
        mock_event["data"]["review_queue_id"],
        {
            "validation_result": "fail",
            "failed_validations": {},
            "auto_approved": True,
            "confidence_score": None,
            "score_reasoning": None,
            "score_version": None,
        },
    )


def test_handler_auto_approved_true_regardless_of_response_contents(
    mock_event: dict,
) -> None:
    """auto_approved is True whenever AutoapproveTaskResponse is present."""
    mock_event["AutoapproveTaskResponse"] = {"some": "payload"}
    with patch("src.app.logic.save_auto_approval_results") as mock_save:
        app.handler(mock_event, None)

    assert mock_save.call_args.args[1]["auto_approved"] is True


def test_handler_auto_approved_false_when_missing(mock_event: dict) -> None:
    """auto_approved is False when AutoapproveTaskResponse is absent."""
    del mock_event["AutoapproveTaskResponse"]
    with patch("src.app.logic.save_auto_approval_results") as mock_save:
        app.handler(mock_event, None)

    assert mock_save.call_args.args[1]["auto_approved"] is False


def test_handler_raises_on_missing_review_queue_id() -> None:
    """Handler raises KeyError when review_queue_id is absent from data."""
    event = {"data": {}}
    with pytest.raises(KeyError):
        app.handler(event, None)


def test_handler_reraises_logic_exceptions(mock_event: dict) -> None:
    """Failures from logic.save_auto_approval_results bubble up to the caller."""
    with patch(
        "src.app.logic.save_auto_approval_results",
        side_effect=RuntimeError("boom"),
    ):
        with pytest.raises(RuntimeError, match="boom"):
            app.handler(mock_event, None)