"""Integration tests for collection/franchise ingestion (section 15): a fake
provider stands in for TMDb so these run without network access, while
still exercising the real normalize -> match -> upsert -> provenance path
against PostgreSQL."""

from __future__ import annotations

from typing import Any

import pytest
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from app.core.ids import aurora_id
from app.models.artwork import Artwork
from app.models.collection import Collection, CollectionMovie
from app.providers.base import MetadataProvider
from app.services import collection_service
from app.services.ingestion.collection_ingestion import ingest_collection
from app.services.ingestion.movie_ingestion import ingest_movie
from tests.unit.test_normalizer import FAKE_COLLECTION, FAKE_MOVIE


class FakeTMDbCollectionProvider(MetadataProvider):
    slug = "tmdb"
    name = "The Movie Database (TMDb)"

    def __init__(
        self, movie_payloads: dict[str, dict[str, Any]], collection_payload: dict[str, Any]
    ) -> None:
        self._movie_payloads = movie_payloads
        self._collection_payload = collection_payload

    async def get_movie(self, external_id: str) -> dict[str, Any]:
        return self._movie_payloads[external_id]

    async def get_series(self, external_id: str) -> dict[str, Any]:
        raise NotImplementedError

    async def get_season(self, series_external_id: str, season_number: int) -> dict[str, Any]:
        raise NotImplementedError

    async def get_person(self, external_id: str) -> dict[str, Any]:
        raise NotImplementedError

    async def get_collection(self, external_id: str) -> dict[str, Any]:
        return self._collection_payload

    async def search_movie(self, query: str) -> list[dict[str, Any]]:
        raise NotImplementedError


@pytest.mark.asyncio
async def test_ingest_collection_only_links_already_ingested_movies(db_session: AsyncSession):
    """Two of FAKE_COLLECTION's four parts (603, 604) are ingested first;
    605 and 999 are not -- CollectionMovie must link only the two Aurora
    already knows about, in release-date order, never fabricate a stub for
    the other two (section 15)."""

    provider = FakeTMDbCollectionProvider(
        movie_payloads={
            "603": {**FAKE_MOVIE, "id": 603, "title": "The Matrix"},
            "604": {**FAKE_MOVIE, "id": 604, "title": "The Matrix Reloaded"},
        },
        collection_payload=FAKE_COLLECTION,
    )

    await ingest_movie(db_session, provider, "603")
    await ingest_movie(db_session, provider, "604")
    await db_session.flush()

    collection_id = await ingest_collection(db_session, provider, "2344")
    await db_session.commit()

    collection = await db_session.get(Collection, collection_id)
    assert collection is not None
    assert collection.name == "The Matrix Collection"
    assert collection.overview == "A group of films..."

    links = (
        (
            await db_session.execute(
                select(CollectionMovie)
                .where(CollectionMovie.collection_id == collection_id)
                .order_by(CollectionMovie.sort_order.asc())
            )
        )
        .scalars()
        .all()
    )
    assert len(links) == 2

    detail = await collection_service.get_collection_detail(
        db_session, aurora_id("collection", str(collection_id))
    )
    assert [m.title for m in detail.movies] == ["The Matrix", "The Matrix Reloaded"]
    assert detail.poster_path is not None
    assert detail.poster_path.endswith("/collection-poster.jpg")


@pytest.mark.asyncio
async def test_ingest_collection_is_idempotent_and_does_not_duplicate_links(
    db_session: AsyncSession,
):
    provider = FakeTMDbCollectionProvider(
        movie_payloads={"603": {**FAKE_MOVIE, "id": 603, "title": "The Matrix"}},
        collection_payload=FAKE_COLLECTION,
    )

    await ingest_movie(db_session, provider, "603")
    await db_session.flush()

    first_id = await ingest_collection(db_session, provider, "2344")
    await db_session.flush()
    second_id = await ingest_collection(db_session, provider, "2344")
    await db_session.commit()

    assert first_id == second_id

    all_collections = (await db_session.execute(select(Collection))).scalars().all()
    assert len(all_collections) == 1

    links = (
        (
            await db_session.execute(
                select(CollectionMovie).where(CollectionMovie.collection_id == first_id)
            )
        )
        .scalars()
        .all()
    )
    assert len(links) == 1


@pytest.mark.asyncio
async def test_ingest_collection_does_not_clobber_overview_from_movie_stub(
    db_session: AsyncSession,
):
    """A movie referencing this collection via belongs_to_collection creates
    a bare stub (name only, overview=None) *after* the real ingest_collection
    already ran -- get_or_create_collection must not blank the real overview
    back to None just because the stub call has none to offer."""

    provider = FakeTMDbCollectionProvider(
        movie_payloads={
            "603": {**FAKE_MOVIE, "id": 603, "title": "The Matrix"},
            "604": {**FAKE_MOVIE, "id": 604, "title": "The Matrix Reloaded"},
        },
        collection_payload=FAKE_COLLECTION,
    )

    collection_id = await ingest_collection(db_session, provider, "2344")
    await db_session.flush()

    await ingest_movie(db_session, provider, "604")
    await db_session.commit()

    collection = await db_session.get(Collection, collection_id)
    assert collection.overview == "A group of films..."


@pytest.mark.asyncio
async def test_ingest_collection_ingests_poster_and_backdrop_artwork(db_session: AsyncSession):
    provider = FakeTMDbCollectionProvider(movie_payloads={}, collection_payload=FAKE_COLLECTION)

    collection_id = await ingest_collection(db_session, provider, "2344")
    await db_session.commit()

    artwork = (
        (
            await db_session.execute(
                select(Artwork).where(
                    Artwork.entity_type == "collection", Artwork.entity_id == collection_id
                )
            )
        )
        .scalars()
        .all()
    )
    types = {a.artwork_type.value for a in artwork}
    assert types == {"poster", "backdrop"}
    assert all(a.is_primary for a in artwork)