"""Tests for the service layer (cache-aware fetching)."""

from unittest.mock import patch

import pytest

from finn_eiendom.models import EiendomUnit, FinnAd, SimilarUnit
from finn_eiendom.service import (
    get_or_fetch_ad,
    get_or_fetch_eiendom_unit,
    get_or_fetch_similar_units,
)


@pytest.mark.asyncio
async def test_get_or_fetch_ad_uses_cache():
    """Test that get_or_fetch_ad returns cached ad without fetching."""
    mock_ad = FinnAd(finnkode="123", url="http://example.com")

    with (
        patch("finn_eiendom.service.init_db"),
        patch("finn_eiendom.service.get_finn_ad", return_value=mock_ad) as mock_get,
        patch("finn_eiendom.service.fetch_ad_details") as mock_fetch,
    ):
        result = await get_or_fetch_ad("123")

        assert result.finnkode == "123"
        mock_get.assert_called_once()
        mock_fetch.assert_not_called()


@pytest.mark.asyncio
async def test_get_or_fetch_ad_fetches_when_cache_miss():
    """Test that get_or_fetch_ad fetches when cache is empty."""
    mock_ad = FinnAd(finnkode="123", url="http://example.com")

    with (
        patch("finn_eiendom.service.init_db"),
        patch("finn_eiendom.service.get_finn_ad", return_value=None),
        patch("finn_eiendom.service.fetch_ad_details", return_value=mock_ad) as mock_fetch,
        patch("finn_eiendom.service.save_finn_ad", return_value=("hash123", True)) as mock_save,
    ):
        result = await get_or_fetch_ad("123")

        assert result.finnkode == "123"
        mock_fetch.assert_called_once_with("123")
        mock_save.assert_called_once()


@pytest.mark.asyncio
async def test_get_or_fetch_ad_force_refresh():
    """Test that force_refresh=True bypasses cache."""
    mock_ad = FinnAd(finnkode="123", url="http://example.com")

    with (
        patch("finn_eiendom.service.init_db"),
        patch("finn_eiendom.service.get_finn_ad", return_value=mock_ad) as mock_get,
        patch("finn_eiendom.service.fetch_ad_details", return_value=mock_ad) as mock_fetch,
        patch("finn_eiendom.service.save_finn_ad", return_value=("hash123", True)) as mock_save,
    ):
        result = await get_or_fetch_ad("123", force_refresh=True)

        assert result.finnkode == "123"
        mock_get.assert_not_called()
        mock_fetch.assert_called_once_with("123")
        mock_save.assert_called_once()


@pytest.mark.asyncio
async def test_get_or_fetch_eiendom_unit_uses_cache():
    """Test that get_or_fetch_eiendom_unit returns cached unit without fetching."""
    mock_unit = EiendomUnit(unit_code="test-code")

    with (
        patch("finn_eiendom.service.init_db"),
        patch("finn_eiendom.service.get_cached_eiendom_unit", return_value=mock_unit) as mock_get,
        patch("finn_eiendom.service.get_unit") as mock_fetch,
    ):
        result = await get_or_fetch_eiendom_unit("test-code")

        assert result.unit_code == "test-code"
        mock_get.assert_called_once()
        mock_fetch.assert_not_called()


@pytest.mark.asyncio
async def test_get_or_fetch_eiendom_unit_fetches_when_cache_miss():
    """Test that get_or_fetch_eiendom_unit fetches when cache is empty."""
    mock_unit = EiendomUnit(unit_code="test-code")

    with (
        patch("finn_eiendom.service.init_db"),
        patch("finn_eiendom.service.get_cached_eiendom_unit", return_value=None),
        patch("finn_eiendom.service.get_unit", return_value=mock_unit) as mock_fetch,
        patch(
            "finn_eiendom.service.save_eiendom_unit", return_value=("hash123", True)
        ) as mock_save,
    ):
        result = await get_or_fetch_eiendom_unit("test-code")

        assert result.unit_code == "test-code"
        mock_fetch.assert_called_once_with("test-code")
        mock_save.assert_called_once()


@pytest.mark.asyncio
async def test_get_or_fetch_similar_units_uses_cache():
    """Test that get_or_fetch_similar_units returns cached units without fetching."""
    mock_unit = EiendomUnit(unit_code="test-code")
    mock_similar = [SimilarUnit(unit_code="comp1"), SimilarUnit(unit_code="comp2")]

    with (
        patch("finn_eiendom.service.init_db"),
        patch("finn_eiendom.service.get_or_fetch_eiendom_unit", return_value=mock_unit),
        patch(
            "finn_eiendom.service.get_cached_similar_units", return_value=mock_similar
        ) as mock_get,
        patch("finn_eiendom.service.get_similar_units") as mock_fetch,
    ):
        result = await get_or_fetch_similar_units("test-code", "RECENTLY_SOLD")

        assert len(result) == 2
        assert result[0].unit_code == "comp1"
        mock_get.assert_called_once()
        mock_fetch.assert_not_called()


@pytest.mark.asyncio
async def test_get_or_fetch_similar_units_fetches_when_cache_miss():
    """Test that get_or_fetch_similar_units fetches when cache is empty."""
    mock_unit = EiendomUnit(unit_code="test-code")
    mock_similar = [SimilarUnit(unit_code="comp1"), SimilarUnit(unit_code="comp2")]

    with (
        patch("finn_eiendom.service.init_db"),
        patch("finn_eiendom.service.get_or_fetch_eiendom_unit", return_value=mock_unit),
        patch("finn_eiendom.service.get_cached_similar_units", return_value=[]),
        patch("finn_eiendom.service.build_unit_vector", return_value="vector_data"),
        patch("finn_eiendom.service.get_similar_units", return_value=mock_similar) as mock_fetch,
        patch(
            "finn_eiendom.service.save_similar_units", return_value=("hash123", True)
        ) as mock_save,
    ):
        result = await get_or_fetch_similar_units("test-code", "RECENTLY_SOLD")

        assert len(result) == 2
        assert result[0].unit_code == "comp1"
        mock_fetch.assert_called_once_with("vector_data", listing_status="RECENTLY_SOLD")
        mock_save.assert_called_once()


@pytest.mark.asyncio
async def test_get_or_fetch_similar_units_force_refresh():
    """Test that force_refresh=True bypasses cache."""
    mock_unit = EiendomUnit(unit_code="test-code")
    mock_similar = [SimilarUnit(unit_code="comp1"), SimilarUnit(unit_code="comp2")]

    with (
        patch("finn_eiendom.service.init_db"),
        patch("finn_eiendom.service.get_or_fetch_eiendom_unit", return_value=mock_unit),
        patch(
            "finn_eiendom.service.get_cached_similar_units", return_value=mock_similar
        ) as mock_get,
        patch("finn_eiendom.service.build_unit_vector", return_value="vector_data"),
        patch("finn_eiendom.service.get_similar_units", return_value=mock_similar) as mock_fetch,
        patch(
            "finn_eiendom.service.save_similar_units", return_value=("hash123", True)
        ) as mock_save,
    ):
        result = await get_or_fetch_similar_units("test-code", "RECENTLY_SOLD", force_refresh=True)

        assert len(result) == 2
        mock_get.assert_not_called()
        mock_fetch.assert_called_once_with("vector_data", listing_status="RECENTLY_SOLD")
        mock_save.assert_called_once()


@pytest.mark.asyncio
async def test_get_or_fetch_similar_units_handles_missing_unit():
    """Test that get_or_fetch_similar_units returns empty list when unit is missing."""
    with (
        patch("finn_eiendom.service.init_db"),
        patch("finn_eiendom.service.get_or_fetch_eiendom_unit", return_value=None),
    ):
        result = await get_or_fetch_similar_units("test-code", "RECENTLY_SOLD")

        assert result == []