"""FC-2d-iv: post.description + post.attachment_count round-trip."""

from datetime import UTC, datetime

import pytest

from backend.app.models import Artist, Post, Source

pytestmark = pytest.mark.integration


async def _post(db, **post_kwargs):
    artist = Artist(name="Nadia", slug="nadia")
    db.add(artist)
    await db.flush()
    src = Source(artist_id=artist.id, platform="web", url="http://x")
    db.add(src)
    await db.flush()
    post = Post(
        source_id=src.id, artist_id=artist.id, external_post_id="p1",
        post_date=datetime(2026, 3, 1, tzinfo=UTC),
        **post_kwargs,
    )
    db.add(post)
    await db.flush()
    return post.id


def test_post_has_new_columns():
    cols = {c.name for c in Post.__table__.columns}
    assert "description" in cols
    assert "attachment_count" in cols


@pytest.mark.asyncio
async def test_description_and_attachment_count_round_trip(db):
    pid = await _post(db, description="<p>hi</p>", attachment_count=3)
    row = await db.get(Post, pid)
    assert row.description == "<p>hi</p>"
    assert row.attachment_count == 3


@pytest.mark.asyncio
async def test_new_fields_default_null(db):
    pid = await _post(db)
    row = await db.get(Post, pid)
    assert row.description is None
    assert row.attachment_count is None
