from pathlib import Path

from app.config import settings
from app.domains.materials.library_paths import (
    asset_library_dir,
    list_asset_library_blends,
    resolve_asset_library_blend_path,
)


def test_asset_library_dir_uses_upload_dir(monkeypatch, tmp_path):
    monkeypatch.setattr(settings, "upload_dir", str(tmp_path / "uploads"))

    assert asset_library_dir() == tmp_path / "uploads" / "asset-libraries"


def test_resolve_asset_library_blend_path_prefers_existing_configured_path(monkeypatch, tmp_path):
    upload_dir = tmp_path / "uploads"
    library_dir = upload_dir / "asset-libraries"
    library_dir.mkdir(parents=True, exist_ok=True)
    configured = tmp_path / "external" / "materials.blend"
    configured.parent.mkdir(parents=True, exist_ok=True)
    configured.write_bytes(b"blend")
    monkeypatch.setattr(settings, "upload_dir", str(upload_dir))

    resolved = resolve_asset_library_blend_path(
        blend_file_path=str(configured),
        asset_library_id="ignored",
    )

    assert resolved == str(configured)


def test_resolve_asset_library_blend_path_falls_back_to_id_named_file(monkeypatch, tmp_path):
    upload_dir = tmp_path / "uploads"
    library_dir = upload_dir / "asset-libraries"
    library_dir.mkdir(parents=True, exist_ok=True)
    expected = library_dir / "1234.blend"
    expected.write_bytes(b"blend")
    monkeypatch.setattr(settings, "upload_dir", str(upload_dir))

    resolved = resolve_asset_library_blend_path(
        blend_file_path=str(library_dir / "missing.blend"),
        asset_library_id="1234",
    )

    assert resolved == str(expected)


def test_resolve_asset_library_blend_path_falls_back_to_newest_available_file(monkeypatch, tmp_path):
    upload_dir = tmp_path / "uploads"
    library_dir = upload_dir / "asset-libraries"
    library_dir.mkdir(parents=True, exist_ok=True)
    older = library_dir / "older.blend"
    newer = library_dir / "newer.blend"
    older.write_bytes(b"older")
    newer.write_bytes(b"newer")
    newer.touch()
    monkeypatch.setattr(settings, "upload_dir", str(upload_dir))

    resolved = resolve_asset_library_blend_path(
        blend_file_path=str(library_dir / "missing.blend"),
        asset_library_id="missing",
    )

    assert resolved == str(newer)
    assert list_asset_library_blends() == [newer, older]