63 lines
1.9 KiB
Python
63 lines
1.9 KiB
Python
"""Helpers for workspace-scoped delivery artifacts."""
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from __future__ import annotations
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from pathlib import Path
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from urllib.parse import quote, urljoin
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from loguru import logger
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from nanobot.utils.helpers import detect_image_mime
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def delivery_artifacts_root(workspace: Path) -> Path:
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"""Return the workspace root used for generated delivery artifacts."""
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return workspace.resolve(strict=False) / "out"
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def is_image_file(path: Path) -> bool:
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"""Return True when a local file looks like a supported image."""
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try:
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with path.open("rb") as f:
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header = f.read(16)
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except OSError:
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return False
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return detect_image_mime(header) is not None
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def resolve_delivery_media(
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media_path: str | Path,
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workspace: Path,
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media_base_url: str,
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) -> tuple[Path | None, str | None, str | None]:
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"""Resolve a local delivery artifact to a public URL under media_base_url."""
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if not media_base_url:
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return None, None, "local media publishing is not configured"
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source = Path(media_path).expanduser()
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try:
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resolved = source.resolve(strict=True)
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except FileNotFoundError:
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return None, None, "local file not found"
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except OSError as e:
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logger.warning("Failed to resolve local delivery media path {}: {}", media_path, e)
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return None, None, "local file unavailable"
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if not resolved.is_file():
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return None, None, "local file not found"
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artifacts_root = delivery_artifacts_root(workspace)
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try:
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relative_path = resolved.relative_to(artifacts_root)
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except ValueError:
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return None, None, f"local delivery media must stay under {artifacts_root}"
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if not is_image_file(resolved):
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return None, None, "local delivery media must be an image"
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media_url = urljoin(
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f"{media_base_url.rstrip('/')}/",
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quote(relative_path.as_posix(), safe="/"),
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)
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return resolved, media_url, None
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