import pytest
from sqlalchemy import select

from backend.app.models import Artist
from backend.app.services.source_service import (
    KNOWN_PLATFORMS,
    ArtistNotFoundError,
    DuplicateSourceError,
    EmptyUrlError,
    InvalidConfigError,
    SourceService,
    UnknownPlatformError,
)

pytestmark = pytest.mark.integration


async def _artist(db, name="Alice"):
    a = Artist(name=name, slug=name.lower())
    db.add(a)
    await db.flush()
    return a


@pytest.mark.asyncio
async def test_known_platforms_contains_starter_set(db):
    assert {"patreon", "fanbox", "subscribestar", "pixiv", "deviantart"} <= KNOWN_PLATFORMS


@pytest.mark.asyncio
async def test_create_flips_is_subscription_on_first_source(db):
    artist = await _artist(db)
    svc = SourceService(db)
    rec = await svc.create(
        artist_id=artist.id, platform="patreon", url="https://patreon.com/alice",
    )
    assert rec.id is not None
    is_sub = (await db.execute(
        select(Artist.is_subscription).where(Artist.id == artist.id)
    )).scalar_one()
    assert is_sub is True


@pytest.mark.asyncio
async def test_delete_last_source_flips_is_subscription_off(db):
    artist = await _artist(db)
    svc = SourceService(db)
    rec = await svc.create(
        artist_id=artist.id, platform="patreon", url="https://patreon.com/alice",
    )
    await svc.delete(rec.id)
    is_sub = (await db.execute(
        select(Artist.is_subscription).where(Artist.id == artist.id)
    )).scalar_one()
    assert is_sub is False


@pytest.mark.asyncio
async def test_create_rejects_unknown_platform(db):
    artist = await _artist(db)
    svc = SourceService(db)
    with pytest.raises(UnknownPlatformError):
        await svc.create(
            artist_id=artist.id, platform="myspace", url="https://m/x",
        )


@pytest.mark.asyncio
async def test_create_rejects_non_dict_config(db):
    artist = await _artist(db)
    svc = SourceService(db)
    with pytest.raises(InvalidConfigError):
        await svc.create(
            artist_id=artist.id, platform="patreon",
            url="https://patreon.com/alice", config_overrides=[1, 2, 3],
        )


@pytest.mark.asyncio
async def test_create_rejects_empty_url(db):
    artist = await _artist(db)
    svc = SourceService(db)
    with pytest.raises(EmptyUrlError):
        await svc.create(artist_id=artist.id, platform="patreon", url="   ")


@pytest.mark.asyncio
async def test_create_rejects_unknown_artist(db):
    svc = SourceService(db)
    with pytest.raises(ArtistNotFoundError):
        await svc.create(artist_id=99999, platform="patreon", url="https://x/y")


@pytest.mark.asyncio
async def test_create_duplicate_raises_with_existing_id(db):
    artist = await _artist(db)
    svc = SourceService(db)
    first = await svc.create(
        artist_id=artist.id, platform="patreon", url="https://patreon.com/alice",
    )
    with pytest.raises(DuplicateSourceError) as exc:
        await svc.create(
            artist_id=artist.id, platform="patreon",
            url="https://patreon.com/alice",
        )
    assert exc.value.existing_id == first.id


@pytest.mark.asyncio
async def test_list_filters_by_artist(db):
    a = await _artist(db, "Alice")
    b = await _artist(db, "Bob")
    svc = SourceService(db)
    await svc.create(artist_id=a.id, platform="patreon", url="https://patreon.com/a")
    await svc.create(artist_id=b.id, platform="patreon", url="https://patreon.com/b")
    only_a = await svc.list(artist_id=a.id)
    assert [s.artist_id for s in only_a] == [a.id]
    all_rows = await svc.list()
    assert len(all_rows) == 2


@pytest.mark.asyncio
async def test_update_changes_fields(db):
    artist = await _artist(db)
    svc = SourceService(db)
    rec = await svc.create(
        artist_id=artist.id, platform="patreon", url="https://patreon.com/a",
    )
    updated = await svc.update(rec.id, enabled=False, config_overrides={"videos": False})
    assert updated.enabled is False
    assert updated.config_overrides == {"videos": False}