Extract has_structure_path_a as its own cached property and have
has_structure_path_b delegate to it, removing duplicated isdir checks.
detect_library_structure and get_platforms_directory now read the named
properties instead of re-implementing the roms-path check inline.
Keep the inconclusive/bad-structure fallback defaulting to Structure A so
a malformed library raises FolderStructureNotMatchException rather than
listing the bare library root as a flat list of platforms.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
When a top-level `roms/` folder exists (Structure A), never detect the
library as Structure B, even if individual `<platform>/roms/` directories
also exist. This prevents existing Structure A libraries from being broken
after upgrading to 4.9.0.
- `has_structure_path_b` in `config_manager.py` now returns `False` early
when `{LIBRARY_BASE_PATH}/{ROMS_FOLDER_NAME}` is an existing directory
- `detect_library_structure()` in `platforms_handler.py` now explicitly
checks Structure A (`os.path.exists(roms_path)`) before consulting
`cnfg.has_structure_path_b`
- Updated test to assert Structure A wins when both layouts coexist
Co-authored-by: gantoine <3247106+gantoine@users.noreply.github.com>
Switch the get_platform_fs_structure, get_firmware_fs_structure,
get_platforms_directory and get_roms_fs_structure tests from mocking
os.path.exists to mocking glob.glob, matching the new STRUCTURE_PATH_B
detection logic. Rename the existing high_priority/normal_structure
variants to structure_a/structure_b for clarity, and fix
test_platform_specific_behavior so its monkeypatch wraps the calls
instead of being applied after them.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
