from __future__ import annotations

from pathlib import Path
import sys

ROOT = Path(__file__).resolve().parents[1]
SRC = ROOT / "src"
if str(SRC) not in sys.path:
    sys.path.insert(0, str(SRC))

from apps.p5_memory_quilt.demo_pack_loader import load_default_demo_pack, sample_memories


def test_demo_pack_loads_and_has_expected_assets() -> None:
    pack = load_default_demo_pack()
    assert pack.pack_id == "p5_memory_quilt"
    assert len(pack.memories) >= 6
    assert len(pack.photos) >= 4
    assert pack.style == "Fabric Quilt"

    sampled = sample_memories(pack, count=6)
    assert len(sampled) == 6
    assert all(memory.text for memory in sampled)
    assert len({memory.text for memory in sampled}) == len(sampled)

    for photo in pack.photos:
        assert photo.exists(), photo
        assert photo.suffix.lower() == ".png"
        assert photo.read_bytes()[:8] == b"\x89PNG\r\n\x1a\n"