"""
Tests for the Prowlarr source module.

Tests the utility functions for parsing release metadata.
"""

# Import the functions to test
import pytest

from shelfmark.metadata_providers import BookMetadata
from shelfmark.release_sources.prowlarr.api import ProwlarrClient
from shelfmark.release_sources.prowlarr.source import (
    ProwlarrSource,
    _detect_content_type_from_categories,
    _extract_format,
    _parse_size,
)
from shelfmark.release_sources.prowlarr.utils import get_protocol_display, sanitize_download_url


class _AvailableSource:
    display_name = "Prowlarr"

    def is_available(self):
        return True


@pytest.fixture(autouse=True)
def source_available_by_default(monkeypatch):
    import shelfmark.download.orchestrator as orchestrator

    monkeypatch.setattr(orchestrator, "get_source", lambda _source: _AvailableSource())


class TestParseSize:
    """Tests for the _parse_size function."""

    def test_parse_size_bytes(self):
        """Test parsing small byte sizes."""
        assert _parse_size(100) == "100 B"
        assert _parse_size(512) == "512 B"

    def test_parse_size_kilobytes(self):
        """Test parsing kilobyte sizes."""
        assert _parse_size(1024) == "1.0 KB"
        assert _parse_size(2048) == "2.0 KB"
        assert _parse_size(1536) == "1.5 KB"

    def test_parse_size_megabytes(self):
        """Test parsing megabyte sizes."""
        assert _parse_size(1048576) == "1.0 MB"
        assert _parse_size(5242880) == "5.0 MB"
        assert _parse_size(1572864) == "1.5 MB"

    def test_parse_size_gigabytes(self):
        """Test parsing gigabyte sizes."""
        assert _parse_size(1073741824) == "1.0 GB"
        assert _parse_size(2147483648) == "2.0 GB"

    def test_parse_size_terabytes(self):
        """Test parsing terabyte sizes."""
        assert _parse_size(1099511627776) == "1.0 TB"

    def test_parse_size_none(self):
        """Test that None returns None."""
        assert _parse_size(None) is None

    def test_parse_size_zero(self):
        """Test that zero returns None."""
        assert _parse_size(0) is None

    def test_parse_size_negative(self):
        """Test that negative values return None."""
        assert _parse_size(-100) is None


class TestExtractFormat:
    """Tests for the _extract_format function."""

    def test_extract_format_from_extension(self):
        """Test extracting format from file extension."""
        assert _extract_format("The Book.epub") == "epub"
        assert _extract_format("The Book.mobi") == "mobi"
        assert _extract_format("The Book.pdf") == "pdf"
        assert _extract_format("The Book.azw3") == "azw3"

    def test_extract_format_from_brackets(self):
        """Test extracting format from brackets."""
        assert _extract_format("The Book [EPUB]") == "epub"
        assert _extract_format("The Book (PDF)") == "pdf"
        assert _extract_format("The Book {MOBI}") == "mobi"

    def test_extract_format_from_word(self):
        """Test extracting format as standalone word."""
        assert _extract_format("The Book epub version") == "epub"
        assert _extract_format("mobi edition of the book") == "mobi"

    def test_extract_format_priority_extension_over_bracket(self):
        """Test that file extension takes priority over brackets."""
        # Extension is more reliable
        assert _extract_format("The Book [PDF].epub") == "epub"

    def test_extract_format_case_insensitive(self):
        """Test that format extraction is case insensitive."""
        assert _extract_format("The Book.EPUB") == "epub"
        assert _extract_format("The Book [PDF]") == "pdf"
        assert _extract_format("The Book.Mobi") == "mobi"

    def test_extract_format_none_when_no_format(self):
        """Test that None is returned when no format found."""
        assert _extract_format("The Book by Author") is None
        assert _extract_format("") is None

    def test_extract_format_cbz_cbr(self):
        """Test comic book formats."""
        assert _extract_format("Comic Issue 1.cbz") == "cbz"
        assert _extract_format("Comic Issue 2.cbr") == "cbr"

    def test_extract_format_fb2(self):
        """Test FB2 format (common in Russian ebooks)."""
        assert _extract_format("Russian Book.fb2") == "fb2"
        assert _extract_format("Book [FB2]") == "fb2"

    def test_extract_format_djvu(self):
        """Test DjVu format."""
        assert _extract_format("Scanned Book.djvu") == "djvu"

    def test_extract_format_avoids_false_positives(self):
        """Test that format extraction doesn't match partial words."""
        # "republic" should not match "pdf" or other formats
        assert _extract_format("The Republic by Plato") is None
        # "literal" should not match "lit"
        assert _extract_format("Literal Translation") is None


class TestGetProtocolDisplay:
    """Tests for the get_protocol_display function."""

    def test_get_protocol_from_protocol_field_torrent(self):
        """Test extracting torrent protocol from protocol field."""
        result = {"protocol": "torrent", "downloadUrl": "https://example.com"}
        assert get_protocol_display(result) == "torrent"

    def test_get_protocol_from_protocol_field_usenet(self):
        """Test extracting usenet protocol from protocol field."""
        result = {"protocol": "usenet", "downloadUrl": "https://example.com"}
        assert get_protocol_display(result) == "nzb"

    def test_get_protocol_from_magnet_url(self):
        """Test inferring torrent from magnet URL."""
        result = {"downloadUrl": "magnet:?xt=urn:btih:abc123"}
        assert get_protocol_display(result) == "torrent"

    def test_get_protocol_from_torrent_url(self):
        """Test inferring torrent from .torrent URL."""
        result = {"downloadUrl": "https://example.com/file.torrent"}
        assert get_protocol_display(result) == "torrent"

    def test_get_protocol_from_nzb_url(self):
        """Test inferring NZB from .nzb URL."""
        result = {"downloadUrl": "https://example.com/file.nzb"}
        assert get_protocol_display(result) == "nzb"

    def test_get_protocol_fallback_to_magnet_url(self):
        """Test fallback to magnetUrl field."""
        result = {"magnetUrl": "magnet:?xt=urn:btih:abc123"}
        assert get_protocol_display(result) == "torrent"

    def test_get_protocol_unknown(self):
        """Test unknown protocol for unclear URLs."""
        result = {"downloadUrl": "https://example.com/download"}
        assert get_protocol_display(result) == "unknown"

    def test_get_protocol_case_insensitive(self):
        """Test protocol detection is case insensitive."""
        result = {"protocol": "TORRENT"}
        assert get_protocol_display(result) == "torrent"

        result = {"protocol": "Usenet"}
        assert get_protocol_display(result) == "nzb"


class TestSanitizeDownloadUrl:
    """Tests for the sanitize_download_url helper."""

    def test_sanitizes_apikey_whitespace(self):
        """Strip whitespace around apikey separators."""
        url = "http://prowlarr:9696/5/download?apikey = 12345"
        assert sanitize_download_url(url) == "http://prowlarr:9696/5/download?apikey=12345"

    def test_sanitizes_multiple_query_params(self):
        """Sanitize all query pairs while keeping params."""
        url = "http://prowlarr:9696/5/download?apikey = 12345&indexer = 7"
        assert (
            sanitize_download_url(url) == "http://prowlarr:9696/5/download?apikey=12345&indexer=7"
        )

    def test_leaves_non_http_urls_untouched(self):
        """Do not modify magnet or other non-http URLs."""
        url = "magnet:?xt=urn:btih:abc123"
        assert sanitize_download_url(url) == url

    def test_leaves_clean_urls_untouched(self):
        """Return clean URLs as-is."""
        url = "https://prowlarr:9696/5/download?apikey=12345"
        assert sanitize_download_url(url) == url


class TestDetectContentType:
    """Tests for the _detect_content_type_from_categories function."""

    def test_fallback_without_categories(self):
        assert _detect_content_type_from_categories([], "ebook") == "book"
        assert _detect_content_type_from_categories([], "audiobook") == "audiobook"

    def test_audiobook_categories(self):
        assert _detect_content_type_from_categories([{"id": 3030}], "ebook") == "audiobook"
        assert _detect_content_type_from_categories([3000], "ebook") == "audiobook"

    def test_book_category_range(self):
        assert _detect_content_type_from_categories([{"id": 7000}], "ebook") == "book"
        assert _detect_content_type_from_categories([7020], "audiobook") == "book"
        assert _detect_content_type_from_categories([7030], "ebook") == "book"

    def test_non_book_categories_return_other(self):
        assert _detect_content_type_from_categories([{"id": 2000}], "ebook") == "other"


class FakeTorznabClient:
    def __init__(self, search_results=None, seed_settings=None):
        self.calls: list[tuple[str, object]] = []
        self.queries: list[str] = []
        self.seed_settings_calls: list[object] = []
        self.search_results = search_results or []
        self.seed_settings = seed_settings or {}

    def get_enabled_indexers_detailed(self):
        return [
            {
                "id": 1,
                "enable": True,
                "capabilities": {
                    "categories": [
                        {"id": 7000, "subCategories": []},
                        {"id": 3030, "subCategories": []},
                    ]
                },
            }
        ]

    def torznab_search(
        self,
        *,
        indexer_id: int,
        query: str,
        categories=None,
        search_type="book",
        limit=100,
        offset=0,
    ):
        del indexer_id, search_type, limit, offset
        self.calls.append((query, categories))
        self.queries.append(query)
        return self.search_results

    def get_enriched_indexer_ids(self, restrict_to=None):
        del restrict_to
        return []

    def get_indexer_seed_settings(self, restrict_to=None):
        self.seed_settings_calls.append(restrict_to)
        return self.seed_settings


class TestProwlarrIndexerSeedSettings:
    def test_get_indexer_seed_settings_reads_prowlarr_minutes_field(self, monkeypatch):
        client = ProwlarrClient("http://prowlarr:9696", "apikey")
        monkeypatch.setattr(
            client,
            "get_enabled_indexers_detailed",
            lambda: [
                {
                    "id": 13,
                    "protocol": "torrent",
                    "fields": [
                        {"name": "torrentBaseSettings.seedRatio", "value": "2.5"},
                        {"name": "torrentBaseSettings.seedTime", "value": "7200"},
                    ],
                },
                {
                    "id": 14,
                    "protocol": "usenet",
                    "fields": [
                        {"name": "torrentBaseSettings.seedRatio", "value": "3"},
                        {"name": "torrentBaseSettings.seedTime", "value": "9999"},
                    ],
                },
            ],
        )

        assert client.get_indexer_seed_settings() == {
            13: {"ratio_limit": 2.5, "seeding_time_limit_minutes": 7200}
        }


class TestProwlarrLocalizedQueries:
    def test_manual_query_still_applies_content_type_categories(self, monkeypatch):
        import shelfmark.release_sources.prowlarr.source as prowlarr_source

        def fake_get(key: str, default=None):
            values = {
                "PROWLARR_INDEXERS": "",
                "PROWLARR_AUTO_EXPAND": False,
            }
            return values.get(key, default)

        monkeypatch.setattr(prowlarr_source.config, "get", fake_get)

        fake_client = FakeTorznabClient()
        source = ProwlarrSource()
        monkeypatch.setattr(source, "_get_client", lambda: fake_client)

        book = BookMetadata(
            provider="hardcover",
            provider_id="123",
            title="Anything",
            authors=["Someone"],
        )

        from shelfmark.core.search_plan import build_release_search_plan

        plan = build_release_search_plan(book, languages=["en"], manual_query="my custom")
        source.search(book, plan, content_type="audiobook")

        assert fake_client.calls == [("my custom", [3030])]

    def test_manual_query_expand_removes_categories(self, monkeypatch):
        import shelfmark.release_sources.prowlarr.source as prowlarr_source

        def fake_get(key: str, default=None):
            values = {
                "PROWLARR_INDEXERS": "",
                "PROWLARR_AUTO_EXPAND": False,
            }
            return values.get(key, default)

        monkeypatch.setattr(prowlarr_source.config, "get", fake_get)

        fake_client = FakeTorznabClient()
        source = ProwlarrSource()
        monkeypatch.setattr(source, "_get_client", lambda: fake_client)

        book = BookMetadata(
            provider="hardcover",
            provider_id="123",
            title="Anything",
            authors=["Someone"],
        )

        from shelfmark.core.search_plan import build_release_search_plan

        plan = build_release_search_plan(book, languages=["en"], manual_query="my custom")
        source.search(book, plan, expand_search=True, content_type="audiobook")

        assert fake_client.calls == [("my custom", None)]

    def test_search_attaches_configured_seed_time_minutes_to_release(self, monkeypatch):
        import shelfmark.release_sources.prowlarr.source as prowlarr_source

        def fake_get(key: str, default=None):
            values = {
                "PROWLARR_INDEXERS": "",
                "PROWLARR_AUTO_EXPAND": False,
                "PROWLARR_USE_SEED_PREFERENCES": True,
            }
            return values.get(key, default)

        monkeypatch.setattr(prowlarr_source.config, "get", fake_get)

        fake_client = FakeTorznabClient(
            search_results=[
                {
                    "guid": "mam-result-1",
                    "protocol": "torrent",
                    "title": "Test Release",
                    "magnetUrl": "magnet:?xt=urn:btih:abc123",
                    "indexerId": 1,
                    "indexer": "MyAnonamouse",
                    "minimumSeedTime": 259200,
                    "minimumRatio": 1,
                }
            ],
            seed_settings={1: {"ratio_limit": 2.0, "seeding_time_limit_minutes": 7200}},
        )
        source = ProwlarrSource()
        monkeypatch.setattr(source, "_get_client", lambda: fake_client)

        book = BookMetadata(
            provider="hardcover",
            provider_id="123",
            title="Anything",
            authors=["Someone"],
        )

        from shelfmark.core.search_plan import build_release_search_plan

        plan = build_release_search_plan(book, languages=["en"])
        releases = source.search(book, plan, content_type="ebook")

        assert len(releases) == 1
        assert fake_client.seed_settings_calls == [None]
        assert releases[0].extra["configured_ratio_limit"] == 2.0
        assert releases[0].extra["configured_seed_time_minutes"] == 7200
        assert "minimum_seed_time" not in releases[0].extra
        assert "minimum_ratio" not in releases[0].extra

    def test_search_ignores_configured_seed_time_when_disabled(self, monkeypatch):
        import shelfmark.release_sources.prowlarr.source as prowlarr_source

        def fake_get(key: str, default=None):
            values = {
                "PROWLARR_INDEXERS": "",
                "PROWLARR_AUTO_EXPAND": False,
                "PROWLARR_USE_SEED_PREFERENCES": False,
            }
            return values.get(key, default)

        monkeypatch.setattr(prowlarr_source.config, "get", fake_get)

        fake_client = FakeTorznabClient(
            search_results=[
                {
                    "guid": "mam-result-1",
                    "protocol": "torrent",
                    "title": "Test Release",
                    "magnetUrl": "magnet:?xt=urn:btih:abc123",
                    "indexerId": 1,
                    "indexer": "MyAnonamouse",
                }
            ],
            seed_settings={1: {"ratio_limit": 2.0, "seeding_time_limit_minutes": 7200}},
        )
        source = ProwlarrSource()
        monkeypatch.setattr(source, "_get_client", lambda: fake_client)

        book = BookMetadata(
            provider="hardcover",
            provider_id="123",
            title="Anything",
            authors=["Someone"],
        )

        from shelfmark.core.search_plan import build_release_search_plan

        plan = build_release_search_plan(book, languages=["en"])
        releases = source.search(book, plan, content_type="ebook")

        assert len(releases) == 1
        assert fake_client.seed_settings_calls == []
        assert releases[0].extra["configured_ratio_limit"] is None
        assert releases[0].extra["configured_seed_time_minutes"] is None

    def test_redacted_search_result_still_builds_private_retry_payload(self, monkeypatch):
        import shelfmark.download.orchestrator as orchestrator
        import shelfmark.release_sources.prowlarr.source as prowlarr_source

        secret_download_url = "https://prowlarr.example.com/1/download?apikey=secret"

        def fake_get(key: str, default=None, user_id=None):
            values = {
                "PROWLARR_INDEXERS": "",
                "PROWLARR_AUTO_EXPAND": False,
                "PROWLARR_USE_SEED_PREFERENCES": False,
            }
            return values.get(key, default)

        monkeypatch.setattr(prowlarr_source.config, "get", fake_get)
        monkeypatch.setattr(orchestrator.config, "get", fake_get)

        fake_client = FakeTorznabClient(
            search_results=[
                {
                    "guid": "secret-prowlarr-release",
                    "protocol": "usenet",
                    "title": "Secret Bearing Release",
                    "downloadUrl": secret_download_url,
                }
            ]
        )
        source = ProwlarrSource()
        monkeypatch.setattr(source, "_get_client", lambda: fake_client)

        book = BookMetadata(
            provider="hardcover",
            provider_id="123",
            title="Anything",
            authors=["Someone"],
        )

        from shelfmark.core.search_plan import build_release_search_plan

        plan = build_release_search_plan(book, languages=["en"])
        releases = source.search(book, plan, content_type="ebook")

        assert len(releases) == 1
        assert releases[0].download_url is None

        captured_tasks = []

        def fake_add(task):
            captured_tasks.append(task)
            return True

        monkeypatch.setattr(orchestrator.book_queue, "add", fake_add)

        success, error = orchestrator.queue_release(releases[0].__dict__)

        assert success is True
        assert error is None
        assert captured_tasks[0].retry_download_url == secret_download_url
        assert captured_tasks[0].retry_download_protocol == "usenet"
        assert "retry_download_url" not in orchestrator._task_to_dict(captured_tasks[0])

    def test_search_uses_localized_titles_when_available(self, monkeypatch):
        import shelfmark.release_sources.prowlarr.source as prowlarr_source

        def fake_get(key: str, default=None):
            values = {
                "PROWLARR_INDEXERS": "",
                "PROWLARR_AUTO_EXPAND": False,
            }
            return values.get(key, default)

        monkeypatch.setattr(prowlarr_source.config, "get", fake_get)

        fake_client = FakeTorznabClient()
        source = ProwlarrSource()
        monkeypatch.setattr(source, "_get_client", lambda: fake_client)

        book = BookMetadata(
            provider="hardcover",
            provider_id="219252",
            title="The Lightning Thief",
            authors=["Rick Riordan"],
            titles_by_language={"hu": "A villámtolvaj"},
        )

        from shelfmark.core.search_plan import build_release_search_plan

        plan = build_release_search_plan(book, languages=["en", "hu"])
        source.search(book, plan, content_type="ebook")

        assert "The Lightning Thief" in fake_client.queries
        assert "A villámtolvaj" in fake_client.queries
        assert len(fake_client.queries) == 2

    def test_search_does_not_override_search_title_for_english(self, monkeypatch):
        import shelfmark.release_sources.prowlarr.source as prowlarr_source

        def fake_get(key: str, default=None):
            values = {
                "PROWLARR_INDEXERS": "",
                "PROWLARR_AUTO_EXPAND": False,
            }
            return values.get(key, default)

        monkeypatch.setattr(prowlarr_source.config, "get", fake_get)

        fake_client = FakeTorznabClient()
        source = ProwlarrSource()
        monkeypatch.setattr(source, "_get_client", lambda: fake_client)

        book = BookMetadata(
            provider="hardcover",
            provider_id="123",
            title="Mistborn: The Final Empire",
            search_title="The Final Empire",
            search_author="Brandon Sanderson",
            authors=["Brandon Sanderson"],
            titles_by_language={
                "en": "Mistborn: The Final Empire",
                "hu": "A végső birodalom",
            },
        )

        from shelfmark.core.search_plan import build_release_search_plan

        plan = build_release_search_plan(book, languages=["en", "hu"])
        source.search(book, plan, content_type="ebook")

        assert "The Final Empire" in fake_client.queries
        assert "A végső birodalom" in fake_client.queries
        assert "Mistborn: The Final Empire" not in fake_client.queries

    def test_auto_expand_logs_query_argument(self, monkeypatch):
        import shelfmark.release_sources.prowlarr.source as prowlarr_source

        def fake_get(key: str, default=None):
            values = {
                "PROWLARR_INDEXERS": "",
                "PROWLARR_AUTO_EXPAND": True,
            }
            return values.get(key, default)

        info_calls: list[tuple[str, tuple[object, ...]]] = []

        monkeypatch.setattr(prowlarr_source.config, "get", fake_get)
        monkeypatch.setattr(
            prowlarr_source.logger,
            "info",
            lambda message, *args: info_calls.append((str(message), args)),
        )

        fake_client = FakeTorznabClient()
        source = ProwlarrSource()
        monkeypatch.setattr(source, "_get_client", lambda: fake_client)

        book = BookMetadata(
            provider="hardcover",
            provider_id="123",
            title="Anything",
            authors=["Someone"],
        )

        from shelfmark.core.search_plan import build_release_search_plan

        plan = build_release_search_plan(book, languages=["en"])
        source.search(book, plan, content_type="ebook")

        query = fake_client.calls[0][0]
        assert fake_client.calls == [(query, [7000]), (query, None)]
        assert info_calls == [
            (
                "Prowlarr: no results for query '%s' with category filter, auto-expanding search",
                (query,),
            )
        ]

    def test_get_column_config_ignores_indexer_lookup_failure(self, monkeypatch):
        source = ProwlarrSource()

        class FailingClient:
            def get_enabled_indexers_detailed(self):
                raise RuntimeError("indexers unavailable")

        monkeypatch.setattr(source, "_get_client", lambda: FailingClient())
        monkeypatch.setattr(source, "_get_selected_indexer_ids", lambda: None)

        config = source.get_column_config()

        assert config.available_indexers is None
        assert config.default_indexers is None

    def test_resolve_indexer_ids_from_names_returns_none_on_lookup_failure(self):
        source = ProwlarrSource()

        class FailingClient:
            def get_enabled_indexers_detailed(self):
                raise RuntimeError("indexers unavailable")

        assert source._resolve_indexer_ids_from_names(FailingClient(), ["Alpha"]) is None

    def test_get_search_indexer_ids_returns_empty_on_lookup_failure(self):
        source = ProwlarrSource()

        class FailingClient:
            def get_enabled_indexers_detailed(self):
                raise RuntimeError("indexers unavailable")

        assert source._get_search_indexer_ids(FailingClient(), None, [7000]) == []