"""Unit tests for services/listing_service.py."""

import pytest
from unittest.mock import AsyncMock, MagicMock, patch

from models.listing import QueryParameters, ListingType
from services import listing_service


class TestGetListings:
    async def test_empty_db_returns_zero(self, listing_repository):
        result = await listing_service.get_listings(listing_repository)
        assert result.total_count == 0
        assert result.listings == []

    async def test_with_results_returns_correct_count(self, listing_repository, sample_rent_listings):
        await listing_repository.upsert_listings(sample_rent_listings)
        result = await listing_service.get_listings(listing_repository)
        assert result.total_count == len(sample_rent_listings)
        assert len(result.listings) == len(sample_rent_listings)

    async def test_with_query_parameters_filters(self, listing_repository, sample_rent_listings):
        await listing_repository.upsert_listings(sample_rent_listings)
        params = QueryParameters(listing_type=ListingType.RENT, min_bedrooms=3)
        result = await listing_service.get_listings(listing_repository, query_parameters=params)
        for listing in result.listings:
            assert listing.number_of_bedrooms >= 3

    async def test_limit_works(self, listing_repository, sample_rent_listings):
        await listing_repository.upsert_listings(sample_rent_listings)
        result = await listing_service.get_listings(listing_repository, limit=1)
        assert len(result.listings) <= 1

    async def test_only_ids_works(self, listing_repository, sample_rent_listings):
        await listing_repository.upsert_listings(sample_rent_listings)
        target_ids = [sample_rent_listings[0].id]
        result = await listing_service.get_listings(listing_repository, only_ids=target_ids)
        assert all(l.id in target_ids for l in result.listings)


class TestRefreshListings:
    async def test_async_mode_dispatches_celery_task(self, listing_repository):
        params = QueryParameters(listing_type=ListingType.RENT)
        with patch("tasks.listing_tasks.dump_listings_task") as mock_task:
            mock_task.apply_async.return_value = MagicMock(id="fake-task-id")
            result = await listing_service.refresh_listings(
                listing_repository, params, async_mode=True, user_email="test@example.com"
            )
        mock_task.apply_async.assert_called_once()
        assert result.task_id == "fake-task-id"

    async def test_sync_mode_calls_fetcher(self, listing_repository):
        params = QueryParameters(listing_type=ListingType.RENT)
        with patch("services.listing_fetcher.dump_listings", new_callable=AsyncMock) as mock_dump:
            mock_dump.return_value = []
            result = await listing_service.refresh_listings(
                listing_repository, params, async_mode=False
            )
        mock_dump.assert_called_once()
        assert result.task_id is None

    async def test_full_mode_calls_dump_listings_full(self, listing_repository):
        params = QueryParameters(listing_type=ListingType.RENT)
        with patch("services.listing_fetcher.dump_listings_full", new_callable=AsyncMock) as mock_full:
            mock_full.return_value = []
            result = await listing_service.refresh_listings(
                listing_repository, params, full=True, async_mode=False
            )
        mock_full.assert_called_once()

    async def test_sync_returns_new_listings_count(self, listing_repository):
        params = QueryParameters(listing_type=ListingType.RENT)
        fake_listings = [MagicMock(), MagicMock(), MagicMock()]
        with patch("services.listing_fetcher.dump_listings", new_callable=AsyncMock) as mock_dump:
            mock_dump.return_value = fake_listings
            result = await listing_service.refresh_listings(
                listing_repository, params, async_mode=False
            )
        assert result.new_listings_count == 3

    async def test_async_result_has_message(self, listing_repository):
        params = QueryParameters(listing_type=ListingType.RENT)
        with patch("tasks.listing_tasks.dump_listings_task") as mock_task:
            mock_task.apply_async.return_value = MagicMock(id="fake-task-id")
            result = await listing_service.refresh_listings(
                listing_repository, params, async_mode=True
            )
        assert result.message is not None
        assert len(result.message) > 0


class TestDownloadImages:
    async def test_calls_image_fetcher(self, listing_repository):
        with patch("services.image_fetcher.dump_images", new_callable=AsyncMock) as mock_dump:
            mock_dump.return_value = None
            result = await listing_service.download_images(listing_repository)
        mock_dump.assert_called_once()


class TestDetectFloorplans:
    async def test_calls_floorplan_detector(self, listing_repository):
        with patch("services.floorplan_detector.detect_floorplan", new_callable=AsyncMock) as mock_detect:
            mock_detect.return_value = None
            result = await listing_service.detect_floorplans(listing_repository)
        mock_detect.assert_called_once()


class TestCalculateRoutes:
    async def test_passes_correct_travel_mode(self, listing_repository):
        with patch("services.route_calculator.calculate_route", new_callable=AsyncMock) as mock_calc:
            mock_calc.return_value = None
            result = await listing_service.calculate_routes(
                listing_repository,
                destination_address="London Bridge",
                travel_mode="TRANSIT",
                limit=10,
            )
        mock_calc.assert_called_once()

    async def test_passes_limit(self, listing_repository):
        with patch("services.route_calculator.calculate_route", new_callable=AsyncMock) as mock_calc:
            mock_calc.return_value = None
            result = await listing_service.calculate_routes(
                listing_repository,
                destination_address="Kings Cross",
                travel_mode="TRANSIT",
                limit=5,
            )
        assert result == 5