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import { AI_HOST } from '@constants'; |
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|
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// Unlike getVibes this never throws; a caller falls back on an empty list. |
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export const getPalettes = async (query = '') => { |
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const url = new URL(`${AI_HOST}/api/palettes`); |
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if (query) url.searchParams.set('palettes', query); |
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|
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const response = await fetch(url, { |
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method: 'GET', |
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headers: { 'Content-Type': 'application/json' }, |
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}); |
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|
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if (!response.ok) return []; |
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|
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const { palettes } = await response.json(); |
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return Array.isArray(palettes) ? palettes : []; |
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}; |
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|
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// Without the widening, a palette no surface offers drops out of the purge union. |
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export const getServedPalettes = async (surface, slugs) => { |
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const asked = [...new Set([slugs].flat().filter(Boolean))]; |
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|
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try { |
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return await getPalettes([surface, ...asked].join(',')); |
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} catch { |
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return []; |
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} |
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}; |
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|
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export const palettesBySlug = (palettes) => |
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Object.fromEntries( |
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(palettes ?? []).map((palette) => [palette.slug, palette]), |
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); |
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|
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const splitByPreference = (palettes, preferred) => { |
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const bySlug = palettesBySlug(palettes); |
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const ranked = (preferred ?? []) |
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.map((slug) => bySlug[slug]) |
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.filter((palette, index, all) => palette && all.indexOf(palette) === index); |
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const rest = (palettes ?? []).filter((palette) => !ranked.includes(palette)); |
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return [ranked, rest]; |
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}; |
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|
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export const rankPalettes = (palettes, preferred = []) => { |
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const [ranked, rest] = splitByPreference(palettes, preferred); |
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return [...ranked, ...rest]; |
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}; |
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|
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// A fresh draw per call, so a capped picker hides no palette permanently. |
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export const samplePalettes = (palettes, preferred = [], limit = Infinity) => { |
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const [ranked, rest] = splitByPreference(palettes, preferred); |
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return [...ranked, ...shuffle(rest)].slice(0, limit); |
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}; |
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|
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const shuffle = (items) => { |
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const drawn = [...items]; |
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for (let i = drawn.length - 1; i > 0; i--) { |
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const j = Math.floor(Math.random() * (i + 1)); |
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[drawn[i], drawn[j]] = [drawn[j], drawn[i]]; |
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} |
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return drawn; |
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}; |
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|
