28 lines
925 B
Python
28 lines
925 B
Python
"""sha-addressed store for preserved non-art post files.
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Arbitrary binaries — never opened or validated as images. Parallels the
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thumbnail store layout (/images/attachments/<sha[:3]>/<sha><ext>).
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"""
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import shutil
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from pathlib import Path
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class AttachmentStore:
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def __init__(self, images_root: Path):
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self.root = Path(images_root) / "attachments"
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def store(self, src: Path, sha256: str) -> str:
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"""Copy src into the sha-addressed store; idempotent on sha.
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Returns the stored absolute path as a string."""
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ext = Path(src).suffix.lower()
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dest_dir = self.root / sha256[:3]
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dest_dir.mkdir(parents=True, exist_ok=True)
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dest = dest_dir / f"{sha256}{ext}"
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if dest.exists():
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return str(dest)
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partial = dest.with_suffix(dest.suffix + ".partial")
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shutil.copy2(src, partial)
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partial.rename(dest)
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return str(dest)
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