import os
import tempfile

import pytest

from app import db as db_module
from app import card_renderer


@pytest.fixture
def tmp_db_and_dirs(monkeypatch, tmp_path):
    fd, path = tempfile.mkstemp(suffix=".db")
    os.close(fd)
    monkeypatch.setattr(db_module, "DB_PATH", path)
    monkeypatch.setattr(card_renderer, "CARDS_DIR", str(tmp_path / "cards"))
    db_module.init_db()
    yield path
    import gc
    gc.collect()
    for ext in ("", "-wal", "-shm"):
        try:
            os.remove(path + ext)
        except OSError:
            pass


def _seed_slate() -> int:
    return db_module.add_card_slate({
        "keyword": "테스트",
        "category": "economy",
        "status": "draft",
        "cover_copy": {"headline": "커버 헤드라인", "body": "서브카피", "accent_color": "#0F62FE"},
        "body_copies": [{"headline": f"본문 {i+1}", "body": f"내용 {i+1}"} for i in range(8)],
        "cta_copy": {"headline": "마무리", "body": "감사합니다", "cta": "팔로우"},
    })


@pytest.mark.asyncio
async def test_render_slate_produces_ten_pngs(tmp_db_and_dirs):
    sid = _seed_slate()
    paths = await card_renderer.render_slate(sid)
    assert len(paths) == 10
    for p in paths:
        assert os.path.exists(p)
        assert os.path.getsize(p) > 1000  # > 1 KB sanity
    db_module.update_slate_status(sid, "rendered")
    assets = db_module.list_card_assets(sid)
    assert {a["page_index"] for a in assets} == set(range(1, 11))