59 lines
2.6 KiB
TypeScript
59 lines
2.6 KiB
TypeScript
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/**
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* The location precision that applies to a single photograph (#469).
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*
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* `location:` was written for the map, and the map was the only surface that
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* honoured it. The lightbox info panel names the city and country of every
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* photo from its own EXIF, gated on the global `exifDisplay` group — so an
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* album set to `location: hidden`, which asks to be absent from the map
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* entirely, still told anyone who clicked "Info" exactly where it was taken.
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* Two settings with almost the same name disagreeing about the same fact.
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*
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* An asset has no album in its own right: the info request carries only an
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* asset token. So the question is turned around — of the albums the operator
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* deliberately restricted, which ones carry this asset?
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*
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* That keeps the common case free. Nobody using `location:` means nothing to
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* check and no album fetched; the cost is bounded by how many albums were
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* restricted, not by how many exist.
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*/
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import { getConfig } from './config';
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import { immich } from './immich';
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import { strictestPrecision, type LocationPrecision } from './mapPrecision';
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/**
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* The strictest `location:` among the albums carrying this asset, or `exact`
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* when none of them restricts anything.
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*
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* An album that cannot be read counts as `hidden`. Membership is then unknown,
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* and guessing that the asset is not in it would publish the position the
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* setting exists to withhold — so this fails closed, at the cost of the info
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* panel dropping its location line site-wide until the album is readable
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* again. A configured album that Immich no longer has is already a warning in
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* the config doctor.
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*/
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export async function assetLocationPrecision(assetId: string): Promise<LocationPrecision> {
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const restricted = Object.entries(getConfig().albumLocationPrecision).filter(
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([, level]) => level !== 'exact',
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);
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if (restricted.length === 0) return 'exact';
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const levels = await Promise.all(
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restricted.map(async ([albumId, level]): Promise<LocationPrecision | null> => {
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try {
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const album = await immich.getAlbum(albumId);
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if (!album) return 'hidden';
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return album.assets.some((asset) => asset.id === assetId) ? level : null;
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} catch {
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return 'hidden';
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}
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}),
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);
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const applicable = levels.filter((level): level is LocationPrecision => level !== null);
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// strictestPrecision() reads an empty list as `hidden` — correct for a map
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// marker nothing contributed to, wrong here, where it means no restricted
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// album carries this photograph.
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return applicable.length === 0 ? 'exact' : strictestPrecision(applicable);
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}
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