Daniel Bedeleanu
ea49cd6e4a
- Create backend/services/image_storage.py with 4 core functions:
- sanitize_filename(): remove unsafe chars, limit to 255 chars, convert to lowercase
- get_unique_filename(): handle collisions with UUID suffix (format: {name}_{uuid8}_{variant}.jpg)
- ensure_image_directories(): create /images/ root and category subdirs on startup
- save_image(): save bytes to /images/{category}/{filename}, returns relative path
- Create comprehensive test suite (22 tests) covering all functionality
- Integrate ensure_image_directories() into FastAPI startup event
- Directory structure: /images/{category}/{filename}
- Collision handling: auto-suffix with UUID if filename exists
- All tests passing, pathlib.Path for safe operations
44 lines
1.3 KiB
Python
44 lines
1.3 KiB
Python
import types
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from pathlib import Path
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from typing import Any, _Final, _GenericAlias, get_origin # type: ignore [attr-defined]
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_PATH_TYPE_LABELS = {
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Path.is_dir: 'directory',
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Path.is_file: 'file',
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Path.is_mount: 'mount point',
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Path.is_symlink: 'symlink',
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Path.is_block_device: 'block device',
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Path.is_char_device: 'char device',
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Path.is_fifo: 'FIFO',
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Path.is_socket: 'socket',
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}
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def path_type_label(p: Path) -> str:
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"""
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Find out what sort of thing a path is.
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"""
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assert p.exists(), 'path does not exist'
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for method, name in _PATH_TYPE_LABELS.items():
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if method(p):
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return name
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return 'unknown' # pragma: no cover
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# TODO remove and replace usage by `isinstance(cls, type) and issubclass(cls, class_or_tuple)`
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# once we drop support for Python 3.10.
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def _lenient_issubclass(cls: Any, class_or_tuple: Any) -> bool: # pragma: no cover
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try:
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return isinstance(cls, type) and issubclass(cls, class_or_tuple)
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except TypeError:
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if get_origin(cls) is not None:
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# Up until Python 3.10, isinstance(<generic_alias>, type) is True
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# (e.g. list[int])
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return False
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raise
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_WithArgsTypes = (_GenericAlias, types.GenericAlias, types.UnionType)
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_typing_base: Any = _Final # pyright: ignore[reportAttributeAccessIssue]
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