"""Unit tests for API-first catalog hub."""

from unittest.mock import AsyncMock, patch

import pytest

from app.services.catalog_hub import (
    CatalogSnapshot,
    build_catalog_snapshot,
    discover_platform_hit,
    isbn_retailer_urls,
    normalize_source_platform,
)
from app.services.isbn_catalog import classify_retailer_url, sanitize_platform_url


class TestNormalizeSourcePlatform:
    def test_google_play_maps_to_google_books(self):
        assert normalize_source_platform("google_play") == "google_books"

    def test_amazon_unchanged(self):
        assert normalize_source_platform("amazon") == "amazon"


class TestDiscoverPlatformHit:
    def _snap(self, **kwargs) -> CatalogSnapshot:
        return CatalogSnapshot(**kwargs)

    def test_source_amazon_verified(self):
        hit = discover_platform_hit(
            "amazon",
            self._snap(asin="B0DHWS3P6T"),
            source_platform="amazon",
            buy_url="https://www.amazon.com/dp/B0DHWS3P6T",
        )
        assert hit.confidence == 1.0
        assert hit.listing_url == "https://www.amazon.com/dp/B0DHWS3P6T"

    def test_google_books_api_verified(self):
        snap = self._snap(gb_volume_id="abc123", gb_confidence=0.92)
        hit = discover_platform_hit("google_books", snap)
        assert hit.listing_url == "https://books.google.com/books?id=abc123"
        assert hit.confidence >= 0.85

    def test_open_library_verified(self):
        snap = self._snap(isbn13="9780593128251", ol_confidence=0.90, ol_key="/works/OL123W")
        hit = discover_platform_hit("open_library", snap)
        assert hit.listing_url == "https://openlibrary.org/isbn/9780593128251"

    def test_goodreads_product_link(self):
        snap = self._snap(
            retailer_links={
                "thriftbooks": "https://www.thriftbooks.com/w/lethal-lines/123/",
            },
        )
        hit = discover_platform_hit("thriftbooks", snap)
        assert hit.confidence == 0.95
        assert "thriftbooks.com/w/" in hit.listing_url

    def test_isbn_search_url_not_present(self):
        snap = self._snap(isbn13="9780593128251")
        hit = discover_platform_hit("kobo", snap)
        assert hit.listing_url is None
        assert hit.confidence == 0.0

    def test_search_link_not_verified_product(self):
        url = "https://www.barnesandnoble.com/s/Lethal+Lines"
        assert classify_retailer_url(url, "barnes_noble") == "search"


class TestIsbnRetailerUrls:
    def test_builds_isbn_targets(self):
        urls = isbn_retailer_urls("9780593128251")
        assert "abebooks.com" in urls["abebooks"]
        assert "9780593128251" in urls["kobo"]


@pytest.mark.asyncio
async def test_build_catalog_snapshot_parallel():
    """Catalog snapshot merges Google Books + Open Library + Apple."""
    mock_client = AsyncMock()
    with patch(
        "app.services.catalog_hub._resolve_google",
        new=AsyncMock(return_value={
            "confidence": 0.92,
            "volume_id": "vol123",
            "isbn13": "9780593128251",
            "isbn10": "0593128257",
            "title": "Regime Change",
            "author": "Patrick Deneen",
            "isbn_match": True,
        }),
    ), patch(
        "app.services.catalog_hub.lookup_open_library",
        new=AsyncMock(return_value={
            "isbn13": "9780593128251",
            "work_key": "/works/OL27445227W",
            "confidence": 0.90,
            "author": "Patrick Deneen",
        }),
    ), patch(
        "app.services.catalog_hub._resolve_apple",
        new=AsyncMock(return_value={"confidence": 0.88, "url": "https://books.apple.com/us/book/id123"}),
    ):
        snap = await build_catalog_snapshot(
            mock_client,
            title="Regime Change",
            author="Patrick Deneen",
            isbn="9780593128251",
        )
    assert snap.gb_volume_id == "vol123"
    assert snap.isbn13 == "9780593128251"
    assert snap.apple_url is not None


class TestSanitizePlatformUrl:
    def test_amazon_affiliate_to_dp(self):
        url = sanitize_platform_url(
            "http://www.amazon.com/gp/product/B0DHWS3P6T/ref=affiliate",
            "amazon",
        )
        assert url == "https://www.amazon.com/dp/B0DHWS3P6T"